[NOT COMPILING] Replace sqlcipher with upstream 4.4.2

Change-Id: I6afb8cb44fb932ff01d1a29877717f909e178948

1 files changed, 13962 insertions, 8078 deletions

diff --git a/src/manager/sqlcipher/sqlcipher.c b/src/manager/sqlcipher/sqlcipher.c
index 5f345df2..3e994bd2 100644
--- a/src/manager/sqlcipher/sqlcipher.c
+++ b/src/manager/sqlcipher/sqlcipher.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2008-2019 Zetetic LLC
+ * Copyright (c) 2008-2020 Zetetic LLC
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -26,7 +26,7 @@
  */
 /******************************************************************************
 ** This file is an amalgamation of many separate C source files from SQLite
-** version 3.30.1.  By combining all the individual C code files into this
+** version 3.33.0.  By combining all the individual C code files into this
 ** single large file, the entire code can be compiled as a single translation
 ** unit.  This allows many compilers to do optimizations that would not be
 ** possible if the files were compiled separately.  Performance improvements
@@ -43,12 +43,6 @@
 ** language. The code for the "sqlite3" command-line shell is also in a
 ** separate file. This file contains only code for the core SQLite library.
 */
-
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wcast-function-type"
-#pragma GCC diagnostic ignored "-Wimplicit-fallthrough"
-#pragma GCC diagnostic ignored "-Wunused-parameter"
-
 #define SQLITE_CORE 1
 #define SQLITE_AMALGAMATION 1
 #ifndef SQLITE_PRIVATE
@@ -250,6 +244,9 @@ static const char * const sqlite3azCompileOpt[] = {
 #if SQLITE_ENABLE_BATCH_ATOMIC_WRITE
   "ENABLE_BATCH_ATOMIC_WRITE",
 #endif
+#if SQLITE_ENABLE_BYTECODE_VTAB
+  "ENABLE_BYTECODE_VTAB",
+#endif
 #if SQLITE_ENABLE_CEROD
   "ENABLE_CEROD=" CTIMEOPT_VAL(SQLITE_ENABLE_CEROD),
 #endif
@@ -412,9 +409,11 @@ static const char * const sqlite3azCompileOpt[] = {
 #if SQLITE_FTS5_NO_WITHOUT_ROWID
   "FTS5_NO_WITHOUT_ROWID",
 #endif
+/* BEGIN SQLCIPHER */
 #if SQLITE_HAS_CODEC
   "HAS_CODEC",
 #endif
+/* END SQLCIPHER */
 #if HAVE_ISNAN || SQLITE_HAVE_ISNAN
   "HAVE_ISNAN",
 #endif
@@ -571,9 +570,6 @@ static const char * const sqlite3azCompileOpt[] = {
 #if SQLITE_OMIT_BLOB_LITERAL
   "OMIT_BLOB_LITERAL",
 #endif
-#if SQLITE_OMIT_BTREECOUNT
-  "OMIT_BTREECOUNT",
-#endif
 #if SQLITE_OMIT_CAST
   "OMIT_CAST",
 #endif
@@ -1035,6 +1031,15 @@ SQLITE_PRIVATE const char **sqlite3CompileOptions(int *pnOpt){
 #endif
 
 /*
+** Macro to disable warnings about missing "break" at the end of a "case".
+*/
+#if GCC_VERSION>=7000000
+# define deliberate_fall_through __attribute__((fallthrough));
+#else
+# define deliberate_fall_through
+#endif
+
+/*
 ** For MinGW, check to see if we can include the header file containing its
 ** version information, among other things.  Normally, this internal MinGW
 ** header file would [only] be included automatically by other MinGW header
@@ -1197,9 +1202,9 @@ extern "C" {
 ** [sqlite3_libversion_number()], [sqlite3_sourceid()],
 ** [sqlite_version()] and [sqlite_source_id()].
 */
-#define SQLITE_VERSION        "3.30.1"
-#define SQLITE_VERSION_NUMBER 3030001
-#define SQLITE_SOURCE_ID      "2019-10-10 20:19:45 18db032d058f1436ce3dea84081f4ee5a0f2259ad97301d43c426bc7f3dfalt1"
+#define SQLITE_VERSION        "3.33.0"
+#define SQLITE_VERSION_NUMBER 3033000
+#define SQLITE_SOURCE_ID      "2020-08-14 13:23:32 fca8dc8b578f215a969cd899336378966156154710873e68b3d9ac5881b0alt1"
 
 /*
 ** CAPI3REF: Run-Time Library Version Numbers
@@ -1373,26 +1378,22 @@ typedef sqlite_uint64 sqlite3_uint64;
 ** the [sqlite3] object is successfully destroyed and all associated
 ** resources are deallocated.
 **
-** ^If the database connection is associated with unfinalized prepared
-** statements or unfinished sqlite3_backup objects then sqlite3_close()
-** will leave the database connection open and return [SQLITE_BUSY].
-** ^If sqlite3_close_v2() is called with unfinalized prepared statements
-** and/or unfinished sqlite3_backups, then the database connection becomes
-** an unusable "zombie" which will automatically be deallocated when the
-** last prepared statement is finalized or the last sqlite3_backup is
-** finished.  The sqlite3_close_v2() interface is intended for use with
-** host languages that are garbage collected, and where the order in which
-** destructors are called is arbitrary.
-**
-** Applications should [sqlite3_finalize | finalize] all [prepared statements],
-** [sqlite3_blob_close | close] all [BLOB handles], and
+** Ideally, applications should [sqlite3_finalize | finalize] all
+** [prepared statements], [sqlite3_blob_close | close] all [BLOB handles], and
 ** [sqlite3_backup_finish | finish] all [sqlite3_backup] objects associated
-** with the [sqlite3] object prior to attempting to close the object.  ^If
-** sqlite3_close_v2() is called on a [database connection] that still has
-** outstanding [prepared statements], [BLOB handles], and/or
-** [sqlite3_backup] objects then it returns [SQLITE_OK] and the deallocation
-** of resources is deferred until all [prepared statements], [BLOB handles],
-** and [sqlite3_backup] objects are also destroyed.
+** with the [sqlite3] object prior to attempting to close the object.
+** ^If the database connection is associated with unfinalized prepared
+** statements, BLOB handlers, and/or unfinished sqlite3_backup objects then
+** sqlite3_close() will leave the database connection open and return
+** [SQLITE_BUSY]. ^If sqlite3_close_v2() is called with unfinalized prepared
+** statements, unclosed BLOB handlers, and/or unfinished sqlite3_backups,
+** it returns [SQLITE_OK] regardless, but instead of deallocating the database
+** connection immediately, it marks the database connection as an unusable
+** "zombie" and makes arrangements to automatically deallocate the database
+** connection after all prepared statements are finalized, all BLOB handles
+** are closed, and all backups have finished. The sqlite3_close_v2() interface
+** is intended for use with host languages that are garbage collected, and
+** where the order in which destructors are called is arbitrary.
 **
 ** ^If an [sqlite3] object is destroyed while a transaction is open,
 ** the transaction is automatically rolled back.
@@ -1581,17 +1582,21 @@ SQLITE_API int sqlite3_exec(
 #define SQLITE_IOERR_BEGIN_ATOMIC      (SQLITE_IOERR | (29<<8))
 #define SQLITE_IOERR_COMMIT_ATOMIC     (SQLITE_IOERR | (30<<8))
 #define SQLITE_IOERR_ROLLBACK_ATOMIC   (SQLITE_IOERR | (31<<8))
+#define SQLITE_IOERR_DATA              (SQLITE_IOERR | (32<<8))
 #define SQLITE_LOCKED_SHAREDCACHE      (SQLITE_LOCKED |  (1<<8))
 #define SQLITE_LOCKED_VTAB             (SQLITE_LOCKED |  (2<<8))
 #define SQLITE_BUSY_RECOVERY           (SQLITE_BUSY   |  (1<<8))
 #define SQLITE_BUSY_SNAPSHOT           (SQLITE_BUSY   |  (2<<8))
+#define SQLITE_BUSY_TIMEOUT            (SQLITE_BUSY   |  (3<<8))
 #define SQLITE_CANTOPEN_NOTEMPDIR      (SQLITE_CANTOPEN | (1<<8))
 #define SQLITE_CANTOPEN_ISDIR          (SQLITE_CANTOPEN | (2<<8))
 #define SQLITE_CANTOPEN_FULLPATH       (SQLITE_CANTOPEN | (3<<8))
 #define SQLITE_CANTOPEN_CONVPATH       (SQLITE_CANTOPEN | (4<<8))
 #define SQLITE_CANTOPEN_DIRTYWAL       (SQLITE_CANTOPEN | (5<<8)) /* Not Used */
+#define SQLITE_CANTOPEN_SYMLINK        (SQLITE_CANTOPEN | (6<<8))
 #define SQLITE_CORRUPT_VTAB            (SQLITE_CORRUPT | (1<<8))
 #define SQLITE_CORRUPT_SEQUENCE        (SQLITE_CORRUPT | (2<<8))
+#define SQLITE_CORRUPT_INDEX           (SQLITE_CORRUPT | (3<<8))
 #define SQLITE_READONLY_RECOVERY       (SQLITE_READONLY | (1<<8))
 #define SQLITE_READONLY_CANTLOCK       (SQLITE_READONLY | (2<<8))
 #define SQLITE_READONLY_ROLLBACK       (SQLITE_READONLY | (3<<8))
@@ -1609,11 +1614,13 @@ SQLITE_API int sqlite3_exec(
 #define SQLITE_CONSTRAINT_UNIQUE       (SQLITE_CONSTRAINT | (8<<8))
 #define SQLITE_CONSTRAINT_VTAB         (SQLITE_CONSTRAINT | (9<<8))
 #define SQLITE_CONSTRAINT_ROWID        (SQLITE_CONSTRAINT |(10<<8))
+#define SQLITE_CONSTRAINT_PINNED       (SQLITE_CONSTRAINT |(11<<8))
 #define SQLITE_NOTICE_RECOVER_WAL      (SQLITE_NOTICE | (1<<8))
 #define SQLITE_NOTICE_RECOVER_ROLLBACK (SQLITE_NOTICE | (2<<8))
 #define SQLITE_WARNING_AUTOINDEX       (SQLITE_WARNING | (1<<8))
 #define SQLITE_AUTH_USER               (SQLITE_AUTH | (1<<8))
 #define SQLITE_OK_LOAD_PERMANENTLY     (SQLITE_OK | (1<<8))
+#define SQLITE_OK_SYMLINK              (SQLITE_OK | (2<<8))
 
 /*
 ** CAPI3REF: Flags For File Open Operations
@@ -1636,14 +1643,18 @@ SQLITE_API int sqlite3_exec(
 #define SQLITE_OPEN_MAIN_JOURNAL     0x00000800  /* VFS only */
 #define SQLITE_OPEN_TEMP_JOURNAL     0x00001000  /* VFS only */
 #define SQLITE_OPEN_SUBJOURNAL       0x00002000  /* VFS only */
-#define SQLITE_OPEN_MASTER_JOURNAL   0x00004000  /* VFS only */
+#define SQLITE_OPEN_SUPER_JOURNAL    0x00004000  /* VFS only */
 #define SQLITE_OPEN_NOMUTEX          0x00008000  /* Ok for sqlite3_open_v2() */
 #define SQLITE_OPEN_FULLMUTEX        0x00010000  /* Ok for sqlite3_open_v2() */
 #define SQLITE_OPEN_SHAREDCACHE      0x00020000  /* Ok for sqlite3_open_v2() */
 #define SQLITE_OPEN_PRIVATECACHE     0x00040000  /* Ok for sqlite3_open_v2() */
 #define SQLITE_OPEN_WAL              0x00080000  /* VFS only */
+#define SQLITE_OPEN_NOFOLLOW         0x01000000  /* Ok for sqlite3_open_v2() */
 
 /* Reserved:                         0x00F00000 */
+/* Legacy compatibility: */
+#define SQLITE_OPEN_MASTER_JOURNAL   0x00004000  /* VFS only */
+
 
 /*
 ** CAPI3REF: Device Characteristics
@@ -1941,7 +1952,7 @@ struct sqlite3_io_methods {
 ** of the xSync method. In most cases, the pointer argument passed with
 ** this file-control is NULL. However, if the database file is being synced
 ** as part of a multi-database commit, the argument points to a nul-terminated
-** string containing the transactions master-journal file name. VFSes that
+** string containing the transactions super-journal file name. VFSes that
 ** do not need this signal should silently ignore this opcode. Applications
 ** should not call [sqlite3_file_control()] with this opcode as doing so may
 ** disrupt the operation of the specialized VFSes that do require it.
@@ -2053,16 +2064,16 @@ struct sqlite3_io_methods {
 ** ^The [SQLITE_FCNTL_BUSYHANDLER]
 ** file-control may be invoked by SQLite on the database file handle
 ** shortly after it is opened in order to provide a custom VFS with access
-** to the connections busy-handler callback. The argument is of type (void **)
+** to the connection's busy-handler callback. The argument is of type (void**)
 ** - an array of two (void *) values. The first (void *) actually points
-** to a function of type (int (*)(void *)). In order to invoke the connections
+** to a function of type (int (*)(void *)). In order to invoke the connection's
 ** busy-handler, this function should be invoked with the second (void *) in
 ** the array as the only argument. If it returns non-zero, then the operation
 ** should be retried. If it returns zero, the custom VFS should abandon the
 ** current operation.
 **
 ** <li>[[SQLITE_FCNTL_TEMPFILENAME]]
-** ^Application can invoke the [SQLITE_FCNTL_TEMPFILENAME] file-control
+** ^Applications can invoke the [SQLITE_FCNTL_TEMPFILENAME] file-control
 ** to have SQLite generate a
 ** temporary filename using the same algorithm that is followed to generate
 ** temporary filenames for TEMP tables and other internal uses.  The
@@ -2157,10 +2168,12 @@ struct sqlite3_io_methods {
 ** a prior successful call to [SQLITE_FCNTL_BEGIN_ATOMIC_WRITE].
 **
 ** <li>[[SQLITE_FCNTL_LOCK_TIMEOUT]]
-** The [SQLITE_FCNTL_LOCK_TIMEOUT] opcode causes attempts to obtain
-** a file lock using the xLock or xShmLock methods of the VFS to wait
-** for up to M milliseconds before failing, where M is the single
-** unsigned integer parameter.
+** The [SQLITE_FCNTL_LOCK_TIMEOUT] opcode is used to configure a VFS
+** to block for up to M milliseconds before failing when attempting to
+** obtain a file lock using the xLock or xShmLock methods of the VFS.
+** The parameter is a pointer to a 32-bit signed integer that contains
+** the value that M is to be set to. Before returning, the 32-bit signed
+** integer is overwritten with the previous value of M.
 **
 ** <li>[[SQLITE_FCNTL_DATA_VERSION]]
 ** The [SQLITE_FCNTL_DATA_VERSION] opcode is used to detect changes to
@@ -2175,12 +2188,23 @@ struct sqlite3_io_methods {
 ** not provide a mechanism to detect changes to MAIN only.  Also, the
 ** [sqlite3_total_changes()] interface responds to internal changes only and
 ** omits changes made by other database connections.  The
-** [PRAGMA data_version] command provide a mechanism to detect changes to
+** [PRAGMA data_version] command provides a mechanism to detect changes to
 ** a single attached database that occur due to other database connections,
 ** but omits changes implemented by the database connection on which it is
 ** called.  This file control is the only mechanism to detect changes that
 ** happen either internally or externally and that are associated with
 ** a particular attached database.
+**
+** <li>[[SQLITE_FCNTL_CKPT_START]]
+** The [SQLITE_FCNTL_CKPT_START] opcode is invoked from within a checkpoint
+** in wal mode before the client starts to copy pages from the wal
+** file to the database file.
+**
+** <li>[[SQLITE_FCNTL_CKPT_DONE]]
+** The [SQLITE_FCNTL_CKPT_DONE] opcode is invoked from within a checkpoint
+** in wal mode after the client has finished copying pages from the wal
+** file to the database file, but before the *-shm file is updated to
+** record the fact that the pages have been checkpointed.
 ** </ul>
 */
 #define SQLITE_FCNTL_LOCKSTATE               1
@@ -2218,6 +2242,9 @@ struct sqlite3_io_methods {
 #define SQLITE_FCNTL_LOCK_TIMEOUT           34
 #define SQLITE_FCNTL_DATA_VERSION           35
 #define SQLITE_FCNTL_SIZE_LIMIT             36
+#define SQLITE_FCNTL_CKPT_DONE              37
+#define SQLITE_FCNTL_RESERVE_BYTES          38
+#define SQLITE_FCNTL_CKPT_START             39
 
 /* deprecated names */
 #define SQLITE_GET_LOCKPROXYFILE      SQLITE_FCNTL_GET_LOCKPROXYFILE
@@ -2263,10 +2290,10 @@ typedef struct sqlite3_api_routines sqlite3_api_routines;
 ** to 3 with SQLite [version 3.7.6] on [dateof:3.7.6].  Additional fields
 ** may be appended to the sqlite3_vfs object and the iVersion value
 ** may increase again in future versions of SQLite.
-** Note that the structure
-** of the sqlite3_vfs object changes in the transition from
+** Note that due to an oversight, the structure
+** of the sqlite3_vfs object changed in the transition from
 ** SQLite [version 3.5.9] to [version 3.6.0] on [dateof:3.6.0]
-** and yet the iVersion field was not modified.
+** and yet the iVersion field was not increased.
 **
 ** The szOsFile field is the size of the subclassed [sqlite3_file]
 ** structure used by this VFS.  mxPathname is the maximum length of
@@ -2322,7 +2349,7 @@ typedef struct sqlite3_api_routines sqlite3_api_routines;
 ** <li>  [SQLITE_OPEN_TEMP_JOURNAL]
 ** <li>  [SQLITE_OPEN_TRANSIENT_DB]
 ** <li>  [SQLITE_OPEN_SUBJOURNAL]
-** <li>  [SQLITE_OPEN_MASTER_JOURNAL]
+** <li>  [SQLITE_OPEN_SUPER_JOURNAL]
 ** <li>  [SQLITE_OPEN_WAL]
 ** </ul>)^
 **
@@ -2357,7 +2384,7 @@ typedef struct sqlite3_api_routines sqlite3_api_routines;
 ** for exclusive access.
 **
 ** ^At least szOsFile bytes of memory are allocated by SQLite
-** to hold the  [sqlite3_file] structure passed as the third
+** to hold the [sqlite3_file] structure passed as the third
 ** argument to xOpen.  The xOpen method does not have to
 ** allocate the structure; it should just fill it in.  Note that
 ** the xOpen method must set the sqlite3_file.pMethods to either
@@ -2694,13 +2721,13 @@ SQLITE_API int sqlite3_db_config(sqlite3*, int op, ...);
 ** that causes the corresponding memory allocation to fail.
 **
 ** The xInit method initializes the memory allocator.  For example,
-** it might allocate any require mutexes or initialize internal data
+** it might allocate any required mutexes or initialize internal data
 ** structures.  The xShutdown method is invoked (indirectly) by
 ** [sqlite3_shutdown()] and should deallocate any resources acquired
 ** by xInit.  The pAppData pointer is used as the only parameter to
 ** xInit and xShutdown.
 **
-** SQLite holds the [SQLITE_MUTEX_STATIC_MASTER] mutex when it invokes
+** SQLite holds the [SQLITE_MUTEX_STATIC_MAIN] mutex when it invokes
 ** the xInit method, so the xInit method need not be threadsafe.  The
 ** xShutdown method is only called from [sqlite3_shutdown()] so it does
 ** not need to be threadsafe either.  For all other methods, SQLite
@@ -2816,6 +2843,7 @@ struct sqlite3_mem_methods {
 ** memory allocation statistics. ^(When memory allocation statistics are
 ** disabled, the following SQLite interfaces become non-operational:
 **   <ul>
+**   <li> [sqlite3_hard_heap_limit64()]
 **   <li> [sqlite3_memory_used()]
 **   <li> [sqlite3_memory_highwater()]
 **   <li> [sqlite3_soft_heap_limit64()]
@@ -2834,7 +2862,7 @@ struct sqlite3_mem_methods {
 ** <dd> ^The SQLITE_CONFIG_PAGECACHE option specifies a memory pool
 ** that SQLite can use for the database page cache with the default page
 ** cache implementation.
-** This configuration option is a no-op if an application-define page
+** This configuration option is a no-op if an application-defined page
 ** cache implementation is loaded using the [SQLITE_CONFIG_PCACHE2].
 ** ^There are three arguments to SQLITE_CONFIG_PAGECACHE: A pointer to
 ** 8-byte aligned memory (pMem), the size of each page cache line (sz),
@@ -3319,7 +3347,7 @@ struct sqlite3_mem_methods {
 ** [[SQLITE_DBCONFIG_DQS_DML]]
 ** <dt>SQLITE_DBCONFIG_DQS_DML</td>
 ** <dd>The SQLITE_DBCONFIG_DQS_DML option activates or deactivates
-** the legacy [double-quoted string literal] misfeature for DML statement
+** the legacy [double-quoted string literal] misfeature for DML statements
 ** only, that is DELETE, INSERT, SELECT, and UPDATE statements. The
 ** default value of this setting is determined by the [-DSQLITE_DQS]
 ** compile-time option.
@@ -3333,6 +3361,48 @@ struct sqlite3_mem_methods {
 ** default value of this setting is determined by the [-DSQLITE_DQS]
 ** compile-time option.
 ** </dd>
+**
+** [[SQLITE_DBCONFIG_TRUSTED_SCHEMA]]
+** <dt>SQLITE_DBCONFIG_TRUSTED_SCHEMA</td>
+** <dd>The SQLITE_DBCONFIG_TRUSTED_SCHEMA option tells SQLite to
+** assume that database schemas are untainted by malicious content.
+** When the SQLITE_DBCONFIG_TRUSTED_SCHEMA option is disabled, SQLite
+** takes additional defensive steps to protect the application from harm
+** including:
+** <ul>
+** <li> Prohibit the use of SQL functions inside triggers, views,
+** CHECK constraints, DEFAULT clauses, expression indexes,
+** partial indexes, or generated columns
+** unless those functions are tagged with [SQLITE_INNOCUOUS].
+** <li> Prohibit the use of virtual tables inside of triggers or views
+** unless those virtual tables are tagged with [SQLITE_VTAB_INNOCUOUS].
+** </ul>
+** This setting defaults to "on" for legacy compatibility, however
+** all applications are advised to turn it off if possible. This setting
+** can also be controlled using the [PRAGMA trusted_schema] statement.
+** </dd>
+**
+** [[SQLITE_DBCONFIG_LEGACY_FILE_FORMAT]]
+** <dt>SQLITE_DBCONFIG_LEGACY_FILE_FORMAT</td>
+** <dd>The SQLITE_DBCONFIG_LEGACY_FILE_FORMAT option activates or deactivates
+** the legacy file format flag.  When activated, this flag causes all newly
+** created database file to have a schema format version number (the 4-byte
+** integer found at offset 44 into the database header) of 1.  This in turn
+** means that the resulting database file will be readable and writable by
+** any SQLite version back to 3.0.0 ([dateof:3.0.0]).  Without this setting,
+** newly created databases are generally not understandable by SQLite versions
+** prior to 3.3.0 ([dateof:3.3.0]).  As these words are written, there
+** is now scarcely any need to generated database files that are compatible
+** all the way back to version 3.0.0, and so this setting is of little
+** practical use, but is provided so that SQLite can continue to claim the
+** ability to generate new database files that are compatible with  version
+** 3.0.0.
+** <p>Note that when the SQLITE_DBCONFIG_LEGACY_FILE_FORMAT setting is on,
+** the [VACUUM] command will fail with an obscure error when attempting to
+** process a table with generated columns and a descending index.  This is
+** not considered a bug since SQLite versions 3.3.0 and earlier do not support
+** either generated columns or decending indexes.
+** </dd>
 ** </dl>
 */
 #define SQLITE_DBCONFIG_MAINDBNAME            1000 /* const char* */
@@ -3351,7 +3421,9 @@ struct sqlite3_mem_methods {
 #define SQLITE_DBCONFIG_DQS_DML               1013 /* int int* */
 #define SQLITE_DBCONFIG_DQS_DDL               1014 /* int int* */
 #define SQLITE_DBCONFIG_ENABLE_VIEW           1015 /* int int* */
-#define SQLITE_DBCONFIG_MAX                   1015 /* Largest DBCONFIG */
+#define SQLITE_DBCONFIG_LEGACY_FILE_FORMAT    1016 /* int int* */
+#define SQLITE_DBCONFIG_TRUSTED_SCHEMA        1017 /* int int* */
+#define SQLITE_DBCONFIG_MAX                   1017 /* Largest DBCONFIG */
 
 /*
 ** CAPI3REF: Enable Or Disable Extended Result Codes
@@ -3557,7 +3629,7 @@ SQLITE_API int sqlite3_total_changes(sqlite3*);
 ** ^The sqlite3_interrupt(D) call is in effect until all currently running
 ** SQL statements on [database connection] D complete.  ^Any new SQL statements
 ** that are started after the sqlite3_interrupt() call and before the
-** running statements reaches zero are interrupted as if they had been
+** running statement count reaches zero are interrupted as if they had been
 ** running prior to the sqlite3_interrupt() call.  ^New SQL statements
 ** that are started after the running statement count reaches zero are
 ** not effected by the sqlite3_interrupt().
@@ -3725,9 +3797,9 @@ SQLITE_API int sqlite3_busy_timeout(sqlite3*, int ms);
 **        Cindy       | 21
 ** </pre></blockquote>
 **
-** There are two column (M==2) and three rows (N==3).  Thus the
+** There are two columns (M==2) and three rows (N==3).  Thus the
 ** result table has 8 entries.  Suppose the result table is stored
-** in an array names azResult.  Then azResult holds this content:
+** in an array named azResult.  Then azResult holds this content:
 **
 ** <blockquote><pre>
 **        azResult&#91;0] = "Name";
@@ -3820,7 +3892,7 @@ SQLITE_API char *sqlite3_vsnprintf(int,char*,const char*, va_list);
 **
 ** The SQLite core uses these three routines for all of its own
 ** internal memory allocation needs. "Core" in the previous sentence
-** does not include operating-system specific VFS implementation.  The
+** does not include operating-system specific [VFS] implementation.  The
 ** Windows VFS uses native malloc() and free() for some operations.
 **
 ** ^The sqlite3_malloc() routine returns a pointer to a block
@@ -3881,19 +3953,6 @@ SQLITE_API char *sqlite3_vsnprintf(int,char*,const char*, va_list);
 ** 4 byte boundary if the [SQLITE_4_BYTE_ALIGNED_MALLOC] compile-time
 ** option is used.
 **
-** In SQLite version 3.5.0 and 3.5.1, it was possible to define
-** the SQLITE_OMIT_MEMORY_ALLOCATION which would cause the built-in
-** implementation of these routines to be omitted.  That capability
-** is no longer provided.  Only built-in memory allocators can be used.
-**
-** Prior to SQLite version 3.7.10, the Windows OS interface layer called
-** the system malloc() and free() directly when converting
-** filenames between the UTF-8 encoding used by SQLite
-** and whatever filename encoding is used by the particular Windows
-** installation.  Memory allocation errors were detected, but
-** they were reported back as [SQLITE_CANTOPEN] or
-** [SQLITE_IOERR] rather than [SQLITE_NOMEM].
-**
 ** The pointer arguments to [sqlite3_free()] and [sqlite3_realloc()]
 ** must be either NULL or else pointers obtained from a prior
 ** invocation of [sqlite3_malloc()] or [sqlite3_realloc()] that have
@@ -3942,7 +4001,7 @@ SQLITE_API sqlite3_int64 sqlite3_memory_highwater(int resetFlag);
 ** SQLite contains a high-quality pseudo-random number generator (PRNG) used to
 ** select random [ROWID | ROWIDs] when inserting new records into a table that
 ** already uses the largest possible [ROWID].  The PRNG is also used for
-** the build-in random() and randomblob() SQL functions.  This interface allows
+** the built-in random() and randomblob() SQL functions.  This interface allows
 ** applications to access the same PRNG for other purposes.
 **
 ** ^A call to this routine stores N bytes of randomness into buffer P.
@@ -4316,10 +4375,8 @@ SQLITE_API void sqlite3_progress_handler(sqlite3*, int, int(*)(void*), void*);
 ** The sqlite3_open_v2() interface works like sqlite3_open()
 ** except that it accepts two additional parameters for additional control
 ** over the new database connection.  ^(The flags parameter to
-** sqlite3_open_v2() can take one of
-** the following three values, optionally combined with the
-** [SQLITE_OPEN_NOMUTEX], [SQLITE_OPEN_FULLMUTEX], [SQLITE_OPEN_SHAREDCACHE],
-** [SQLITE_OPEN_PRIVATECACHE], and/or [SQLITE_OPEN_URI] flags:)^
+** sqlite3_open_v2() must include, at a minimum, one of the following
+** three flag combinations:)^
 **
 ** <dl>
 ** ^(<dt>[SQLITE_OPEN_READONLY]</dt>
@@ -4337,23 +4394,51 @@ SQLITE_API void sqlite3_progress_handler(sqlite3*, int, int(*)(void*), void*);
 ** sqlite3_open() and sqlite3_open16().</dd>)^
 ** </dl>
 **
+** In addition to the required flags, the following optional flags are
+** also supported:
+**
+** <dl>
+** ^(<dt>[SQLITE_OPEN_URI]</dt>
+** <dd>The filename can be interpreted as a URI if this flag is set.</dd>)^
+**
+** ^(<dt>[SQLITE_OPEN_MEMORY]</dt>
+** <dd>The database will be opened as an in-memory database.  The database
+** is named by the "filename" argument for the purposes of cache-sharing,
+** if shared cache mode is enabled, but the "filename" is otherwise ignored.
+** </dd>)^
+**
+** ^(<dt>[SQLITE_OPEN_NOMUTEX]</dt>
+** <dd>The new database connection will use the "multi-thread"
+** [threading mode].)^  This means that separate threads are allowed
+** to use SQLite at the same time, as long as each thread is using
+** a different [database connection].
+**
+** ^(<dt>[SQLITE_OPEN_FULLMUTEX]</dt>
+** <dd>The new database connection will use the "serialized"
+** [threading mode].)^  This means the multiple threads can safely
+** attempt to use the same database connection at the same time.
+** (Mutexes will block any actual concurrency, but in this mode
+** there is no harm in trying.)
+**
+** ^(<dt>[SQLITE_OPEN_SHAREDCACHE]</dt>
+** <dd>The database is opened [shared cache] enabled, overriding
+** the default shared cache setting provided by
+** [sqlite3_enable_shared_cache()].)^
+**
+** ^(<dt>[SQLITE_OPEN_PRIVATECACHE]</dt>
+** <dd>The database is opened [shared cache] disabled, overriding
+** the default shared cache setting provided by
+** [sqlite3_enable_shared_cache()].)^
+**
+** [[OPEN_NOFOLLOW]] ^(<dt>[SQLITE_OPEN_NOFOLLOW]</dt>
+** <dd>The database filename is not allowed to be a symbolic link</dd>
+** </dl>)^
+**
 ** If the 3rd parameter to sqlite3_open_v2() is not one of the
-** combinations shown above optionally combined with other
+** required combinations shown above optionally combined with other
 ** [SQLITE_OPEN_READONLY | SQLITE_OPEN_* bits]
 ** then the behavior is undefined.
 **
-** ^If the [SQLITE_OPEN_NOMUTEX] flag is set, then the database connection
-** opens in the multi-thread [threading mode] as long as the single-thread
-** mode has not been set at compile-time or start-time.  ^If the
-** [SQLITE_OPEN_FULLMUTEX] flag is set then the database connection opens
-** in the serialized [threading mode] unless single-thread was
-** previously selected at compile-time or start-time.
-** ^The [SQLITE_OPEN_SHAREDCACHE] flag causes the database connection to be
-** eligible to use [shared cache mode], regardless of whether or not shared
-** cache is enabled using [sqlite3_enable_shared_cache()].  ^The
-** [SQLITE_OPEN_PRIVATECACHE] flag causes the database connection to not
-** participate in [shared cache mode] even if it is enabled.
-**
 ** ^The fourth parameter to sqlite3_open_v2() is the name of the
 ** [sqlite3_vfs] object that defines the operating system interface that
 ** the new database connection should use.  ^If the fourth parameter is
@@ -4533,17 +4618,27 @@ SQLITE_API int sqlite3_open_v2(
 /*
 ** CAPI3REF: Obtain Values For URI Parameters
 **
-** These are utility routines, useful to VFS implementations, that check
-** to see if a database file was a URI that contained a specific query
+** These are utility routines, useful to [VFS|custom VFS implementations],
+** that check if a database file was a URI that contained a specific query
 ** parameter, and if so obtains the value of that query parameter.
 **
-** If F is the database filename pointer passed into the xOpen() method of
-** a VFS implementation when the flags parameter to xOpen() has one or
-** more of the [SQLITE_OPEN_URI] or [SQLITE_OPEN_MAIN_DB] bits set and
-** P is the name of the query parameter, then
+** The first parameter to these interfaces (hereafter referred to
+** as F) must be one of:
+** <ul>
+** <li> A database filename pointer created by the SQLite core and
+** passed into the xOpen() method of a VFS implemention, or
+** <li> A filename obtained from [sqlite3_db_filename()], or
+** <li> A new filename constructed using [sqlite3_create_filename()].
+** </ul>
+** If the F parameter is not one of the above, then the behavior is
+** undefined and probably undesirable.  Older versions of SQLite were
+** more tolerant of invalid F parameters than newer versions.
+**
+** If F is a suitable filename (as described in the previous paragraph)
+** and if P is the name of the query parameter, then
 ** sqlite3_uri_parameter(F,P) returns the value of the P
 ** parameter if it exists or a NULL pointer if P does not appear as a
-** query parameter on F.  If P is a query parameter of F
+** query parameter on F.  If P is a query parameter of F and it
 ** has no explicit value, then sqlite3_uri_parameter(F,P) returns
 ** a pointer to an empty string.
 **
@@ -4555,7 +4650,7 @@ SQLITE_API int sqlite3_open_v2(
 ** sqlite3_uri_boolean(F,P,B) routines returns false (0) if the value of
 ** query parameter P is one of "no", "false", or "off" in any case or
 ** if the value begins with a numeric zero.  If P is not a query
-** parameter on F or if the value of P is does not match any of the
+** parameter on F or if the value of P does not match any of the
 ** above, then sqlite3_uri_boolean(F,P,B) returns (B!=0).
 **
 ** The sqlite3_uri_int64(F,P,D) routine converts the value of P into a
@@ -4563,18 +4658,137 @@ SQLITE_API int sqlite3_open_v2(
 ** exist.  If the value of P is something other than an integer, then
 ** zero is returned.
 **
+** The sqlite3_uri_key(F,N) returns a pointer to the name (not
+** the value) of the N-th query parameter for filename F, or a NULL
+** pointer if N is less than zero or greater than the number of query
+** parameters minus 1.  The N value is zero-based so N should be 0 to obtain
+** the name of the first query parameter, 1 for the second parameter, and
+** so forth.
+**
 ** If F is a NULL pointer, then sqlite3_uri_parameter(F,P) returns NULL and
 ** sqlite3_uri_boolean(F,P,B) returns B.  If F is not a NULL pointer and
-** is not a database file pathname pointer that SQLite passed into the xOpen
-** VFS method, then the behavior of this routine is undefined and probably
-** undesirable.
+** is not a database file pathname pointer that the SQLite core passed
+** into the xOpen VFS method, then the behavior of this routine is undefined
+** and probably undesirable.
+**
+** Beginning with SQLite [version 3.31.0] ([dateof:3.31.0]) the input F
+** parameter can also be the name of a rollback journal file or WAL file
+** in addition to the main database file.  Prior to version 3.31.0, these
+** routines would only work if F was the name of the main database file.
+** When the F parameter is the name of the rollback journal or WAL file,
+** it has access to all the same query parameters as were found on the
+** main database file.
 **
 ** See the [URI filename] documentation for additional information.
 */
 SQLITE_API const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam);
 SQLITE_API int sqlite3_uri_boolean(const char *zFile, const char *zParam, int bDefault);
 SQLITE_API sqlite3_int64 sqlite3_uri_int64(const char*, const char*, sqlite3_int64);
+SQLITE_API const char *sqlite3_uri_key(const char *zFilename, int N);
+
+/*
+** CAPI3REF:  Translate filenames
+**
+** These routines are available to [VFS|custom VFS implementations] for
+** translating filenames between the main database file, the journal file,
+** and the WAL file.
+**
+** If F is the name of an sqlite database file, journal file, or WAL file
+** passed by the SQLite core into the VFS, then sqlite3_filename_database(F)
+** returns the name of the corresponding database file.
+**
+** If F is the name of an sqlite database file, journal file, or WAL file
+** passed by the SQLite core into the VFS, or if F is a database filename
+** obtained from [sqlite3_db_filename()], then sqlite3_filename_journal(F)
+** returns the name of the corresponding rollback journal file.
+**
+** If F is the name of an sqlite database file, journal file, or WAL file
+** that was passed by the SQLite core into the VFS, or if F is a database
+** filename obtained from [sqlite3_db_filename()], then
+** sqlite3_filename_wal(F) returns the name of the corresponding
+** WAL file.
+**
+** In all of the above, if F is not the name of a database, journal or WAL
+** filename passed into the VFS from the SQLite core and F is not the
+** return value from [sqlite3_db_filename()], then the result is
+** undefined and is likely a memory access violation.
+*/
+SQLITE_API const char *sqlite3_filename_database(const char*);
+SQLITE_API const char *sqlite3_filename_journal(const char*);
+SQLITE_API const char *sqlite3_filename_wal(const char*);
 
+/*
+** CAPI3REF:  Database File Corresponding To A Journal
+**
+** ^If X is the name of a rollback or WAL-mode journal file that is
+** passed into the xOpen method of [sqlite3_vfs], then
+** sqlite3_database_file_object(X) returns a pointer to the [sqlite3_file]
+** object that represents the main database file.
+**
+** This routine is intended for use in custom [VFS] implementations
+** only.  It is not a general-purpose interface.
+** The argument sqlite3_file_object(X) must be a filename pointer that
+** has been passed into [sqlite3_vfs].xOpen method where the
+** flags parameter to xOpen contains one of the bits
+** [SQLITE_OPEN_MAIN_JOURNAL] or [SQLITE_OPEN_WAL].  Any other use
+** of this routine results in undefined and probably undesirable
+** behavior.
+*/
+SQLITE_API sqlite3_file *sqlite3_database_file_object(const char*);
+
+/*
+** CAPI3REF: Create and Destroy VFS Filenames
+**
+** These interfces are provided for use by [VFS shim] implementations and
+** are not useful outside of that context.
+**
+** The sqlite3_create_filename(D,J,W,N,P) allocates memory to hold a version of
+** database filename D with corresponding journal file J and WAL file W and
+** with N URI parameters key/values pairs in the array P.  The result from
+** sqlite3_create_filename(D,J,W,N,P) is a pointer to a database filename that
+** is safe to pass to routines like:
+** <ul>
+** <li> [sqlite3_uri_parameter()],
+** <li> [sqlite3_uri_boolean()],
+** <li> [sqlite3_uri_int64()],
+** <li> [sqlite3_uri_key()],
+** <li> [sqlite3_filename_database()],
+** <li> [sqlite3_filename_journal()], or
+** <li> [sqlite3_filename_wal()].
+** </ul>
+** If a memory allocation error occurs, sqlite3_create_filename() might
+** return a NULL pointer.  The memory obtained from sqlite3_create_filename(X)
+** must be released by a corresponding call to sqlite3_free_filename(Y).
+**
+** The P parameter in sqlite3_create_filename(D,J,W,N,P) should be an array
+** of 2*N pointers to strings.  Each pair of pointers in this array corresponds
+** to a key and value for a query parameter.  The P parameter may be a NULL
+** pointer if N is zero.  None of the 2*N pointers in the P array may be
+** NULL pointers and key pointers should not be empty strings.
+** None of the D, J, or W parameters to sqlite3_create_filename(D,J,W,N,P) may
+** be NULL pointers, though they can be empty strings.
+**
+** The sqlite3_free_filename(Y) routine releases a memory allocation
+** previously obtained from sqlite3_create_filename().  Invoking
+** sqlite3_free_filename(Y) where Y is a NULL pointer is a harmless no-op.
+**
+** If the Y parameter to sqlite3_free_filename(Y) is anything other
+** than a NULL pointer or a pointer previously acquired from
+** sqlite3_create_filename(), then bad things such as heap
+** corruption or segfaults may occur. The value Y should be
+** used again after sqlite3_free_filename(Y) has been called.  This means
+** that if the [sqlite3_vfs.xOpen()] method of a VFS has been called using Y,
+** then the corresponding [sqlite3_module.xClose() method should also be
+** invoked prior to calling sqlite3_free_filename(Y).
+*/
+SQLITE_API char *sqlite3_create_filename(
+  const char *zDatabase,
+  const char *zJournal,
+  const char *zWal,
+  int nParam,
+  const char **azParam
+);
+SQLITE_API void sqlite3_free_filename(char*);
 
 /*
 ** CAPI3REF: Error Codes And Messages
@@ -4892,12 +5106,12 @@ SQLITE_API int sqlite3_limit(sqlite3*, int id, int newVal);
 ** </li>
 **
 ** <li>
-** ^If the specific value bound to [parameter | host parameter] in the
+** ^If the specific value bound to a [parameter | host parameter] in the
 ** WHERE clause might influence the choice of query plan for a statement,
 ** then the statement will be automatically recompiled, as if there had been
-** a schema change, on the first  [sqlite3_step()] call following any change
+** a schema change, on the first [sqlite3_step()] call following any change
 ** to the [sqlite3_bind_text | bindings] of that [parameter].
-** ^The specific value of WHERE-clause [parameter] might influence the
+** ^The specific value of a WHERE-clause [parameter] might influence the
 ** choice of query plan if the parameter is the left-hand side of a [LIKE]
 ** or [GLOB] operator or if the parameter is compared to an indexed column
 ** and the [SQLITE_ENABLE_STAT4] compile-time option is enabled.
@@ -5157,12 +5371,30 @@ typedef struct sqlite3_context sqlite3_context;
 ** [sqlite3_bind_parameter_index()] API if desired.  ^The index
 ** for "?NNN" parameters is the value of NNN.
 ** ^The NNN value must be between 1 and the [sqlite3_limit()]
-** parameter [SQLITE_LIMIT_VARIABLE_NUMBER] (default value: 999).
+** parameter [SQLITE_LIMIT_VARIABLE_NUMBER] (default value: 32766).
 **
 ** ^The third argument is the value to bind to the parameter.
 ** ^If the third parameter to sqlite3_bind_text() or sqlite3_bind_text16()
 ** or sqlite3_bind_blob() is a NULL pointer then the fourth parameter
 ** is ignored and the end result is the same as sqlite3_bind_null().
+** ^If the third parameter to sqlite3_bind_text() is not NULL, then
+** it should be a pointer to well-formed UTF8 text.
+** ^If the third parameter to sqlite3_bind_text16() is not NULL, then
+** it should be a pointer to well-formed UTF16 text.
+** ^If the third parameter to sqlite3_bind_text64() is not NULL, then
+** it should be a pointer to a well-formed unicode string that is
+** either UTF8 if the sixth parameter is SQLITE_UTF8, or UTF16
+** otherwise.
+**
+** [[byte-order determination rules]] ^The byte-order of
+** UTF16 input text is determined by the byte-order mark (BOM, U+FEFF)
+** found in first character, which is removed, or in the absence of a BOM
+** the byte order is the native byte order of the host
+** machine for sqlite3_bind_text16() or the byte order specified in
+** the 6th parameter for sqlite3_bind_text64().)^
+** ^If UTF16 input text contains invalid unicode
+** characters, then SQLite might change those invalid characters
+** into the unicode replacement character: U+FFFD.
 **
 ** ^(In those routines that have a fourth argument, its value is the
 ** number of bytes in the parameter.  To be clear: the value is the
@@ -5176,7 +5408,7 @@ typedef struct sqlite3_context sqlite3_context;
 ** or sqlite3_bind_text16() or sqlite3_bind_text64() then
 ** that parameter must be the byte offset
 ** where the NUL terminator would occur assuming the string were NUL
-** terminated.  If any NUL characters occur at byte offsets less than
+** terminated.  If any NUL characters occurs at byte offsets less than
 ** the value of the fourth parameter then the resulting string value will
 ** contain embedded NULs.  The result of expressions involving strings
 ** with embedded NULs is undefined.
@@ -5406,7 +5638,7 @@ SQLITE_API const void *sqlite3_column_name16(sqlite3_stmt*, int N);
 **
 ** ^If the Nth column returned by the statement is an expression or
 ** subquery and is not a column value, then all of these functions return
-** NULL.  ^These routine might also return NULL if a memory allocation error
+** NULL.  ^These routines might also return NULL if a memory allocation error
 ** occurs.  ^Otherwise, they return the name of the attached database, table,
 ** or column that query result column was extracted from.
 **
@@ -5416,10 +5648,6 @@ SQLITE_API const void *sqlite3_column_name16(sqlite3_stmt*, int N);
 ** ^These APIs are only available if the library was compiled with the
 ** [SQLITE_ENABLE_COLUMN_METADATA] C-preprocessor symbol.
 **
-** If two or more threads call one or more of these routines against the same
-** prepared statement and column at the same time then the results are
-** undefined.
-**
 ** If two or more threads call one or more
 ** [sqlite3_column_database_name | column metadata interfaces]
 ** for the same [prepared statement] and result column
@@ -5556,7 +5784,7 @@ SQLITE_API int sqlite3_step(sqlite3_stmt*);
 ** ^The sqlite3_data_count(P) interface returns the number of columns in the
 ** current row of the result set of [prepared statement] P.
 ** ^If prepared statement P does not have results ready to return
-** (via calls to the [sqlite3_column_int | sqlite3_column_*()] of
+** (via calls to the [sqlite3_column_int | sqlite3_column()] family of
 ** interfaces) then sqlite3_data_count(P) returns 0.
 ** ^The sqlite3_data_count(P) routine also returns 0 if P is a NULL pointer.
 ** ^The sqlite3_data_count(P) routine returns 0 if the previous call to
@@ -5880,8 +6108,6 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt);
 /*
 ** CAPI3REF: Create Or Redefine SQL Functions
 ** KEYWORDS: {function creation routines}
-** KEYWORDS: {application-defined SQL function}
-** KEYWORDS: {application-defined SQL functions}
 ** METHOD: sqlite3
 **
 ** ^These functions (collectively known as "function creation routines")
@@ -5937,9 +6163,20 @@ SQLITE_API int sqlite3_reset(sqlite3_stmt *pStmt);
 **
 ** ^The fourth parameter may also optionally include the [SQLITE_DIRECTONLY]
 ** flag, which if present prevents the function from being invoked from
-** within VIEWs or TRIGGERs.  For security reasons, the [SQLITE_DIRECTONLY]
-** flag is recommended for any application-defined SQL function that has
-** side-effects.
+** within VIEWs, TRIGGERs, CHECK constraints, generated column expressions,
+** index expressions, or the WHERE clause of partial indexes.
+**
+** <span style="background-color:#ffff90;">
+** For best security, the [SQLITE_DIRECTONLY] flag is recommended for
+** all application-defined SQL functions that do not need to be
+** used inside of triggers, view, CHECK constraints, or other elements of
+** the database schema.  This flags is especially recommended for SQL
+** functions that have side effects or reveal internal application state.
+** Without this flag, an attacker might be able to modify the schema of
+** a database file to include invocations of the function with parameters
+** chosen by the attacker, which the application will then execute when
+** the database file is opened and read.
+** </span>
 **
 ** ^(The fifth parameter is an arbitrary pointer.  The implementation of the
 ** function can gain access to this pointer using [sqlite3_user_data()].)^
@@ -6058,18 +6295,53 @@ SQLITE_API int sqlite3_create_window_function(
 ** to [sqlite3_create_function()], [sqlite3_create_function16()], or
 ** [sqlite3_create_function_v2()].
 **
-** The SQLITE_DETERMINISTIC flag means that the new function will always
-** maps the same inputs into the same output.  The abs() function is
-** deterministic, for example, but randomblob() is not.
+** <dl>
+** [[SQLITE_DETERMINISTIC]] <dt>SQLITE_DETERMINISTIC</dt><dd>
+** The SQLITE_DETERMINISTIC flag means that the new function always gives
+** the same output when the input parameters are the same.
+** The [abs|abs() function] is deterministic, for example, but
+** [randomblob|randomblob()] is not.  Functions must
+** be deterministic in order to be used in certain contexts such as
+** with the WHERE clause of [partial indexes] or in [generated columns].
+** SQLite might also optimize deterministic functions by factoring them
+** out of inner loops.
+** </dd>
 **
+** [[SQLITE_DIRECTONLY]] <dt>SQLITE_DIRECTONLY</dt><dd>
 ** The SQLITE_DIRECTONLY flag means that the function may only be invoked
-** from top-level SQL, and cannot be used in VIEWs or TRIGGERs.  This is
-** a security feature which is recommended for all
-** [application-defined SQL functions] that have side-effects.  This flag
-** prevents an attacker from adding triggers and views to a schema then
-** tricking a high-privilege application into causing unintended side-effects
-** while performing ordinary queries.
+** from top-level SQL, and cannot be used in VIEWs or TRIGGERs nor in
+** schema structures such as [CHECK constraints], [DEFAULT clauses],
+** [expression indexes], [partial indexes], or [generated columns].
+** The SQLITE_DIRECTONLY flags is a security feature which is recommended
+** for all [application-defined SQL functions], and especially for functions
+** that have side-effects or that could potentially leak sensitive
+** information.
+** </dd>
 **
+** [[SQLITE_INNOCUOUS]] <dt>SQLITE_INNOCUOUS</dt><dd>
+** The SQLITE_INNOCUOUS flag means that the function is unlikely
+** to cause problems even if misused.  An innocuous function should have
+** no side effects and should not depend on any values other than its
+** input parameters. The [abs|abs() function] is an example of an
+** innocuous function.
+** The [load_extension() SQL function] is not innocuous because of its
+** side effects.
+** <p> SQLITE_INNOCUOUS is similar to SQLITE_DETERMINISTIC, but is not
+** exactly the same.  The [random|random() function] is an example of a
+** function that is innocuous but not deterministic.
+** <p>Some heightened security settings
+** ([SQLITE_DBCONFIG_TRUSTED_SCHEMA] and [PRAGMA trusted_schema=OFF])
+** disable the use of SQL functions inside views and triggers and in
+** schema structures such as [CHECK constraints], [DEFAULT clauses],
+** [expression indexes], [partial indexes], and [generated columns] unless
+** the function is tagged with SQLITE_INNOCUOUS.  Most built-in functions
+** are innocuous.  Developers are advised to avoid using the
+** SQLITE_INNOCUOUS flag for application-defined functions unless the
+** function has been carefully audited and found to be free of potentially
+** security-adverse side-effects and information-leaks.
+** </dd>
+**
+** [[SQLITE_SUBTYPE]] <dt>SQLITE_SUBTYPE</dt><dd>
 ** The SQLITE_SUBTYPE flag indicates to SQLite that a function may call
 ** [sqlite3_value_subtype()] to inspect the sub-types of its arguments.
 ** Specifying this flag makes no difference for scalar or aggregate user
@@ -6077,10 +6349,13 @@ SQLITE_API int sqlite3_create_window_function(
 ** function, then any sub-types belonging to arguments passed to the window
 ** function may be discarded before the window function is called (i.e.
 ** sqlite3_value_subtype() will always return 0).
+** </dd>
+** </dl>
 */
 #define SQLITE_DETERMINISTIC    0x000000800
 #define SQLITE_DIRECTONLY       0x000080000
 #define SQLITE_SUBTYPE          0x000100000
+#define SQLITE_INNOCUOUS        0x000200000
 
 /*
 ** CAPI3REF: Deprecated Functions
@@ -6139,8 +6414,8 @@ SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int6
 **
 ** These routines extract type, size, and content information from
 ** [protected sqlite3_value] objects.  Protected sqlite3_value objects
-** are used to pass parameter information into implementation of
-** [application-defined SQL functions] and [virtual tables].
+** are used to pass parameter information into the functions that
+** implement [application-defined SQL functions] and [virtual tables].
 **
 ** These routines work only with [protected sqlite3_value] objects.
 ** Any attempt to use these routines on an [unprotected sqlite3_value]
@@ -6197,7 +6472,7 @@ SQLITE_API SQLITE_DEPRECATED int sqlite3_memory_alarm(void(*)(void*,sqlite3_int6
 ** ^The sqlite3_value_frombind(X) interface returns non-zero if the
 ** value X originated from one of the [sqlite3_bind_int|sqlite3_bind()]
 ** interfaces.  ^If X comes from an SQL literal value, or a table column,
-** and expression, then sqlite3_value_frombind(X) returns zero.
+** or an expression, then sqlite3_value_frombind(X) returns zero.
 **
 ** Please pay particular attention to the fact that the pointer returned
 ** from [sqlite3_value_blob()], [sqlite3_value_text()], or
@@ -6283,8 +6558,8 @@ SQLITE_API void sqlite3_value_free(sqlite3_value*);
 ** routine to allocate memory for storing their state.
 **
 ** ^The first time the sqlite3_aggregate_context(C,N) routine is called
-** for a particular aggregate function, SQLite
-** allocates N of memory, zeroes out that memory, and returns a pointer
+** for a particular aggregate function, SQLite allocates
+** N bytes of memory, zeroes out that memory, and returns a pointer
 ** to the new memory. ^On second and subsequent calls to
 ** sqlite3_aggregate_context() for the same aggregate function instance,
 ** the same buffer is returned.  Sqlite3_aggregate_context() is normally
@@ -6301,7 +6576,7 @@ SQLITE_API void sqlite3_value_free(sqlite3_value*);
 **
 ** ^(The amount of space allocated by sqlite3_aggregate_context(C,N) is
 ** determined by the N parameter on first successful call.  Changing the
-** value of N in subsequent call to sqlite3_aggregate_context() within
+** value of N in any subsequent call to sqlite3_aggregate_context() within
 ** the same aggregate function instance will not resize the memory
 ** allocation.)^  Within the xFinal callback, it is customary to set
 ** N=0 in calls to sqlite3_aggregate_context(C,N) so that no
@@ -6458,8 +6733,9 @@ typedef void (*sqlite3_destructor_type)(void*);
 ** 2nd parameter of sqlite3_result_error() or sqlite3_result_error16()
 ** as the text of an error message.  ^SQLite interprets the error
 ** message string from sqlite3_result_error() as UTF-8. ^SQLite
-** interprets the string from sqlite3_result_error16() as UTF-16 in native
-** byte order.  ^If the third parameter to sqlite3_result_error()
+** interprets the string from sqlite3_result_error16() as UTF-16 using
+** the same [byte-order determination rules] as [sqlite3_bind_text16()].
+** ^If the third parameter to sqlite3_result_error()
 ** or sqlite3_result_error16() is negative then SQLite takes as the error
 ** message all text up through the first zero character.
 ** ^If the third parameter to sqlite3_result_error() or
@@ -6527,6 +6803,25 @@ typedef void (*sqlite3_destructor_type)(void*);
 ** then SQLite makes a copy of the result into space obtained
 ** from [sqlite3_malloc()] before it returns.
 **
+** ^For the sqlite3_result_text16(), sqlite3_result_text16le(), and
+** sqlite3_result_text16be() routines, and for sqlite3_result_text64()
+** when the encoding is not UTF8, if the input UTF16 begins with a
+** byte-order mark (BOM, U+FEFF) then the BOM is removed from the
+** string and the rest of the string is interpreted according to the
+** byte-order specified by the BOM.  ^The byte-order specified by
+** the BOM at the beginning of the text overrides the byte-order
+** specified by the interface procedure.  ^So, for example, if
+** sqlite3_result_text16le() is invoked with text that begins
+** with bytes 0xfe, 0xff (a big-endian byte-order mark) then the
+** first two bytes of input are skipped and the remaining input
+** is interpreted as UTF16BE text.
+**
+** ^For UTF16 input text to the sqlite3_result_text16(),
+** sqlite3_result_text16be(), sqlite3_result_text16le(), and
+** sqlite3_result_text64() routines, if the text contains invalid
+** UTF16 characters, the invalid characters might be converted
+** into the unicode replacement character, U+FFFD.
+**
 ** ^The sqlite3_result_value() interface sets the result of
 ** the application-defined function to be a copy of the
 ** [unprotected sqlite3_value] object specified by the 2nd parameter.  ^The
@@ -6612,7 +6907,7 @@ SQLITE_API void sqlite3_result_subtype(sqlite3_context*,unsigned int);
 ** <li> [SQLITE_UTF16_ALIGNED].
 ** </ul>)^
 ** ^The eTextRep argument determines the encoding of strings passed
-** to the collating function callback, xCallback.
+** to the collating function callback, xCompare.
 ** ^The [SQLITE_UTF16] and [SQLITE_UTF16_ALIGNED] values for eTextRep
 ** force strings to be UTF16 with native byte order.
 ** ^The [SQLITE_UTF16_ALIGNED] value for eTextRep forces strings to begin
@@ -6621,18 +6916,19 @@ SQLITE_API void sqlite3_result_subtype(sqlite3_context*,unsigned int);
 ** ^The fourth argument, pArg, is an application data pointer that is passed
 ** through as the first argument to the collating function callback.
 **
-** ^The fifth argument, xCallback, is a pointer to the collating function.
+** ^The fifth argument, xCompare, is a pointer to the collating function.
 ** ^Multiple collating functions can be registered using the same name but
 ** with different eTextRep parameters and SQLite will use whichever
 ** function requires the least amount of data transformation.
-** ^If the xCallback argument is NULL then the collating function is
+** ^If the xCompare argument is NULL then the collating function is
 ** deleted.  ^When all collating functions having the same name are deleted,
 ** that collation is no longer usable.
 **
 ** ^The collating function callback is invoked with a copy of the pArg
 ** application data pointer and with two strings in the encoding specified
-** by the eTextRep argument.  The collating function must return an
-** integer that is negative, zero, or positive
+** by the eTextRep argument.  The two integer parameters to the collating
+** function callback are the length of the two strings, in bytes. The collating
+** function must return an integer that is negative, zero, or positive
 ** if the first string is less than, equal to, or greater than the second,
 ** respectively.  A collating function must always return the same answer
 ** given the same inputs.  If two or more collating functions are registered
@@ -6649,7 +6945,7 @@ SQLITE_API void sqlite3_result_subtype(sqlite3_context*,unsigned int);
 ** </ol>
 **
 ** If a collating function fails any of the above constraints and that
-** collating function is  registered and used, then the behavior of SQLite
+** collating function is registered and used, then the behavior of SQLite
 ** is undefined.
 **
 ** ^The sqlite3_create_collation_v2() works like sqlite3_create_collation()
@@ -6731,6 +7027,7 @@ SQLITE_API int sqlite3_collation_needed16(
   void(*)(void*,sqlite3*,int eTextRep,const void*)
 );
 
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
 /*
 ** Specify the key for an encrypted database.  This routine should be
@@ -6757,22 +7054,6 @@ SQLITE_API int sqlite3_key_v2(
 ** The code to implement this API is not available in the public release
 ** of SQLite.
 */
-/* BEGIN SQLCIPHER
-   SQLCipher usage note:
-
-   If the current database is plaintext SQLCipher will NOT encrypt it.
-   If the current database is encrypted and pNew==0 or nNew==0, SQLCipher
-   will NOT decrypt it.
-
-   This routine will ONLY work on an already encrypted database in order
-   to change the key.
-
-   Conversion from plaintext-to-encrypted or encrypted-to-plaintext should
-   use an ATTACHed database and the sqlcipher_export() convenience function
-   as per the SQLCipher Documentation.
-
-   END SQLCIPHER
-*/
 SQLITE_API int sqlite3_rekey(
   sqlite3 *db,                   /* Database to be rekeyed */
   const void *pKey, int nKey     /* The new key */
@@ -6791,6 +7072,7 @@ SQLITE_API void sqlite3_activate_see(
   const char *zPassPhrase        /* Activation phrase */
 );
 #endif
+/* END SQLCIPHER */
 
 #ifdef SQLITE_ENABLE_CEROD
 /*
@@ -6992,16 +7274,31 @@ SQLITE_API sqlite3 *sqlite3_db_handle(sqlite3_stmt*);
 ** CAPI3REF: Return The Filename For A Database Connection
 ** METHOD: sqlite3
 **
-** ^The sqlite3_db_filename(D,N) interface returns a pointer to a filename
-** associated with database N of connection D.  ^The main database file
-** has the name "main".  If there is no attached database N on the database
+** ^The sqlite3_db_filename(D,N) interface returns a pointer to the filename
+** associated with database N of connection D.
+** ^If there is no attached database N on the database
 ** connection D, or if database N is a temporary or in-memory database, then
 ** this function will return either a NULL pointer or an empty string.
 **
+** ^The string value returned by this routine is owned and managed by
+** the database connection.  ^The value will be valid until the database N
+** is [DETACH]-ed or until the database connection closes.
+**
 ** ^The filename returned by this function is the output of the
 ** xFullPathname method of the [VFS].  ^In other words, the filename
 ** will be an absolute pathname, even if the filename used
 ** to open the database originally was a URI or relative pathname.
+**
+** If the filename pointer returned by this routine is not NULL, then it
+** can be used as the filename input parameter to these routines:
+** <ul>
+** <li> [sqlite3_uri_parameter()]
+** <li> [sqlite3_uri_boolean()]
+** <li> [sqlite3_uri_int64()]
+** <li> [sqlite3_filename_database()]
+** <li> [sqlite3_filename_journal()]
+** <li> [sqlite3_filename_wal()]
+** </ul>
 */
 SQLITE_API const char *sqlite3_db_filename(sqlite3 *db, const char *zDbName);
 
@@ -7105,7 +7402,7 @@ SQLITE_API void *sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*);
 ** ^In the case of an update, this is the [rowid] after the update takes place.
 **
 ** ^(The update hook is not invoked when internal system tables are
-** modified (i.e. sqlite_master and sqlite_sequence).)^
+** modified (i.e. sqlite_sequence).)^
 ** ^The update hook is not invoked when [WITHOUT ROWID] tables are modified.
 **
 ** ^In the current implementation, the update hook
@@ -7151,15 +7448,19 @@ SQLITE_API void *sqlite3_update_hook(
 **
 ** ^(The cache sharing mode set by this interface effects all subsequent
 ** calls to [sqlite3_open()], [sqlite3_open_v2()], and [sqlite3_open16()].
-** Existing database connections continue use the sharing mode
+** Existing database connections continue to use the sharing mode
 ** that was in effect at the time they were opened.)^
 **
 ** ^(This routine returns [SQLITE_OK] if shared cache was enabled or disabled
 ** successfully.  An [error code] is returned otherwise.)^
 **
-** ^Shared cache is disabled by default. But this might change in
-** future releases of SQLite.  Applications that care about shared
-** cache setting should set it explicitly.
+** ^Shared cache is disabled by default. It is recommended that it stay
+** that way.  In other words, do not use this routine.  This interface
+** continues to be provided for historical compatibility, but its use is
+** discouraged.  Any use of shared cache is discouraged.  If shared cache
+** must be used, it is recommended that shared cache only be enabled for
+** individual database connections using the [sqlite3_open_v2()] interface
+** with the [SQLITE_OPEN_SHAREDCACHE] flag.
 **
 ** Note: This method is disabled on MacOS X 10.7 and iOS version 5.0
 ** and will always return SQLITE_MISUSE. On those systems,
@@ -7206,6 +7507,9 @@ SQLITE_API int sqlite3_db_release_memory(sqlite3*);
 /*
 ** CAPI3REF: Impose A Limit On Heap Size
 **
+** These interfaces impose limits on the amount of heap memory that will be
+** by all database connections within a single process.
+**
 ** ^The sqlite3_soft_heap_limit64() interface sets and/or queries the
 ** soft limit on the amount of heap memory that may be allocated by SQLite.
 ** ^SQLite strives to keep heap memory utilization below the soft heap
@@ -7216,20 +7520,41 @@ SQLITE_API int sqlite3_db_release_memory(sqlite3*);
 ** an [SQLITE_NOMEM] error.  In other words, the soft heap limit
 ** is advisory only.
 **
-** ^The return value from sqlite3_soft_heap_limit64() is the size of
-** the soft heap limit prior to the call, or negative in the case of an
-** error.  ^If the argument N is negative
-** then no change is made to the soft heap limit.  Hence, the current
-** size of the soft heap limit can be determined by invoking
-** sqlite3_soft_heap_limit64() with a negative argument.
-**
-** ^If the argument N is zero then the soft heap limit is disabled.
+** ^The sqlite3_hard_heap_limit64(N) interface sets a hard upper bound of
+** N bytes on the amount of memory that will be allocated.  ^The
+** sqlite3_hard_heap_limit64(N) interface is similar to
+** sqlite3_soft_heap_limit64(N) except that memory allocations will fail
+** when the hard heap limit is reached.
 **
-** ^(The soft heap limit is not enforced in the current implementation
+** ^The return value from both sqlite3_soft_heap_limit64() and
+** sqlite3_hard_heap_limit64() is the size of
+** the heap limit prior to the call, or negative in the case of an
+** error.  ^If the argument N is negative
+** then no change is made to the heap limit.  Hence, the current
+** size of heap limits can be determined by invoking
+** sqlite3_soft_heap_limit64(-1) or sqlite3_hard_heap_limit(-1).
+**
+** ^Setting the heap limits to zero disables the heap limiter mechanism.
+**
+** ^The soft heap limit may not be greater than the hard heap limit.
+** ^If the hard heap limit is enabled and if sqlite3_soft_heap_limit(N)
+** is invoked with a value of N that is greater than the hard heap limit,
+** the the soft heap limit is set to the value of the hard heap limit.
+** ^The soft heap limit is automatically enabled whenever the hard heap
+** limit is enabled. ^When sqlite3_hard_heap_limit64(N) is invoked and
+** the soft heap limit is outside the range of 1..N, then the soft heap
+** limit is set to N.  ^Invoking sqlite3_soft_heap_limit64(0) when the
+** hard heap limit is enabled makes the soft heap limit equal to the
+** hard heap limit.
+**
+** The memory allocation limits can also be adjusted using
+** [PRAGMA soft_heap_limit] and [PRAGMA hard_heap_limit].
+**
+** ^(The heap limits are not enforced in the current implementation
 ** if one or more of following conditions are true:
 **
 ** <ul>
-** <li> The soft heap limit is set to zero.
+** <li> The limit value is set to zero.
 ** <li> Memory accounting is disabled using a combination of the
 **      [sqlite3_config]([SQLITE_CONFIG_MEMSTATUS],...) start-time option and
 **      the [SQLITE_DEFAULT_MEMSTATUS] compile-time option.
@@ -7240,21 +7565,11 @@ SQLITE_API int sqlite3_db_release_memory(sqlite3*);
 **      from the heap.
 ** </ul>)^
 **
-** Beginning with SQLite [version 3.7.3] ([dateof:3.7.3]),
-** the soft heap limit is enforced
-** regardless of whether or not the [SQLITE_ENABLE_MEMORY_MANAGEMENT]
-** compile-time option is invoked.  With [SQLITE_ENABLE_MEMORY_MANAGEMENT],
-** the soft heap limit is enforced on every memory allocation.  Without
-** [SQLITE_ENABLE_MEMORY_MANAGEMENT], the soft heap limit is only enforced
-** when memory is allocated by the page cache.  Testing suggests that because
-** the page cache is the predominate memory user in SQLite, most
-** applications will achieve adequate soft heap limit enforcement without
-** the use of [SQLITE_ENABLE_MEMORY_MANAGEMENT].
-**
-** The circumstances under which SQLite will enforce the soft heap limit may
+** The circumstances under which SQLite will enforce the heap limits may
 ** changes in future releases of SQLite.
 */
 SQLITE_API sqlite3_int64 sqlite3_soft_heap_limit64(sqlite3_int64 N);
+SQLITE_API sqlite3_int64 sqlite3_hard_heap_limit64(sqlite3_int64 N);
 
 /*
 ** CAPI3REF: Deprecated Soft Heap Limit Interface
@@ -7278,7 +7593,7 @@ SQLITE_API SQLITE_DEPRECATED void sqlite3_soft_heap_limit(int N);
 ** interface returns SQLITE_OK and fills in the non-NULL pointers in
 ** the final five arguments with appropriate values if the specified
 ** column exists.  ^The sqlite3_table_column_metadata() interface returns
-** SQLITE_ERROR and if the specified column does not exist.
+** SQLITE_ERROR if the specified column does not exist.
 ** ^If the column-name parameter to sqlite3_table_column_metadata() is a
 ** NULL pointer, then this routine simply checks for the existence of the
 ** table and returns SQLITE_OK if the table exists and SQLITE_ERROR if it
@@ -7420,7 +7735,7 @@ SQLITE_API int sqlite3_load_extension(
 ** to enable or disable only the C-API.)^
 **
 ** <b>Security warning:</b> It is recommended that extension loading
-** be disabled using the [SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION] method
+** be enabled using the [SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION] method
 ** rather than this interface, so the [load_extension()] SQL function
 ** remains disabled. This will prevent SQL injections from giving attackers
 ** access to extension loading capabilities.
@@ -7507,7 +7822,7 @@ typedef struct sqlite3_module sqlite3_module;
 ** KEYWORDS: sqlite3_module {virtual table module}
 **
 ** This structure, sometimes called a "virtual table module",
-** defines the implementation of a [virtual tables].
+** defines the implementation of a [virtual table].
 ** This structure consists mostly of methods for the module.
 **
 ** ^A virtual table module is created by filling in a persistent
@@ -7604,7 +7919,13 @@ struct sqlite3_module {
 ** the right-hand side of the corresponding aConstraint[] is evaluated
 ** and becomes the argvIndex-th entry in argv.  ^(If aConstraintUsage[].omit
 ** is true, then the constraint is assumed to be fully handled by the
-** virtual table and is not checked again by SQLite.)^
+** virtual table and might not be checked again by the byte code.)^ ^(The
+** aConstraintUsage[].omit flag is an optimization hint. When the omit flag
+** is left in its default setting of false, the constraint will always be
+** checked separately in byte code.  If the omit flag is change to true, then
+** the constraint may or may not be checked in byte code.  In other words,
+** when the omit flag is true there is no guarantee that the constraint will
+** not be checked again using byte code.)^
 **
 ** ^The idxNum and idxPtr values are recorded and passed into the
 ** [xFilter] method.
@@ -7644,7 +7965,7 @@ struct sqlite3_module {
 ** If a virtual table extension is
 ** used with an SQLite version earlier than 3.8.2, the results of attempting
 ** to read or write the estimatedRows field are undefined (but are likely
-** to included crashing the application). The estimatedRows field should
+** to include crashing the application). The estimatedRows field should
 ** therefore only be used if [sqlite3_libversion_number()] returns a
 ** value greater than or equal to 3008002. Similarly, the idxFlags field
 ** was added for [version 3.9.0] ([dateof:3.9.0]).
@@ -7696,7 +8017,7 @@ struct sqlite3_index_info {
 /*
 ** CAPI3REF: Virtual Table Constraint Operator Codes
 **
-** These macros defined the allowed values for the
+** These macros define the allowed values for the
 ** [sqlite3_index_info].aConstraint[].op field.  Each value represents
 ** an operator that is part of a constraint term in the wHERE clause of
 ** a query that uses a [virtual table].
@@ -8183,7 +8504,7 @@ SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs*);
 ** <ul>
 ** <li>  SQLITE_MUTEX_FAST
 ** <li>  SQLITE_MUTEX_RECURSIVE
-** <li>  SQLITE_MUTEX_STATIC_MASTER
+** <li>  SQLITE_MUTEX_STATIC_MAIN
 ** <li>  SQLITE_MUTEX_STATIC_MEM
 ** <li>  SQLITE_MUTEX_STATIC_OPEN
 ** <li>  SQLITE_MUTEX_STATIC_PRNG
@@ -8306,7 +8627,7 @@ SQLITE_API void sqlite3_mutex_leave(sqlite3_mutex*);
 ** The only difference is that the public sqlite3_XXX functions enumerated
 ** above silently ignore any invocations that pass a NULL pointer instead
 ** of a valid mutex handle. The implementations of the methods defined
-** by this structure are not required to handle this case, the results
+** by this structure are not required to handle this case. The results
 ** of passing a NULL pointer instead of a valid mutex handle are undefined
 ** (i.e. it is acceptable to provide an implementation that segfaults if
 ** it is passed a NULL pointer).
@@ -8385,7 +8706,7 @@ SQLITE_API int sqlite3_mutex_notheld(sqlite3_mutex*);
 */
 #define SQLITE_MUTEX_FAST             0
 #define SQLITE_MUTEX_RECURSIVE        1
-#define SQLITE_MUTEX_STATIC_MASTER    2
+#define SQLITE_MUTEX_STATIC_MAIN      2
 #define SQLITE_MUTEX_STATIC_MEM       3  /* sqlite3_malloc() */
 #define SQLITE_MUTEX_STATIC_MEM2      4  /* NOT USED */
 #define SQLITE_MUTEX_STATIC_OPEN      4  /* sqlite3BtreeOpen() */
@@ -8400,6 +8721,10 @@ SQLITE_API int sqlite3_mutex_notheld(sqlite3_mutex*);
 #define SQLITE_MUTEX_STATIC_VFS2     12  /* For use by extension VFS */
 #define SQLITE_MUTEX_STATIC_VFS3     13  /* For use by application VFS */
 
+/* Legacy compatibility: */
+#define SQLITE_MUTEX_STATIC_MASTER    2
+
+
 /*
 ** CAPI3REF: Retrieve the mutex for a database connection
 ** METHOD: sqlite3
@@ -8495,7 +8820,7 @@ SQLITE_API int sqlite3_test_control(int op, ...);
 #define SQLITE_TESTCTRL_PENDING_BYTE            11
 #define SQLITE_TESTCTRL_ASSERT                  12
 #define SQLITE_TESTCTRL_ALWAYS                  13
-#define SQLITE_TESTCTRL_RESERVE                 14
+#define SQLITE_TESTCTRL_RESERVE                 14  /* NOT USED */
 #define SQLITE_TESTCTRL_OPTIMIZATIONS           15
 #define SQLITE_TESTCTRL_ISKEYWORD               16  /* NOT USED */
 #define SQLITE_TESTCTRL_SCRATCHMALLOC           17  /* NOT USED */
@@ -8779,7 +9104,7 @@ SQLITE_API int sqlite3_status64(
 **
 ** [[SQLITE_STATUS_PAGECACHE_SIZE]] ^(<dt>SQLITE_STATUS_PAGECACHE_SIZE</dt>
 ** <dd>This parameter records the largest memory allocation request
-** handed to [pagecache memory allocator].  Only the value returned in the
+** handed to the [pagecache memory allocator].  Only the value returned in the
 ** *pHighwater parameter to [sqlite3_status()] is of interest.
 ** The value written into the *pCurrent parameter is undefined.</dd>)^
 **
@@ -8855,7 +9180,7 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r
 ** checked out.</dd>)^
 **
 ** [[SQLITE_DBSTATUS_LOOKASIDE_HIT]] ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_HIT</dt>
-** <dd>This parameter returns the number malloc attempts that were
+** <dd>This parameter returns the number of malloc attempts that were
 ** satisfied using lookaside memory. Only the high-water value is meaningful;
 ** the current value is always zero.)^
 **
@@ -8937,7 +9262,7 @@ SQLITE_API int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int r
 ** cache overflowing. Transactions are more efficient if they are written
 ** to disk all at once. When pages spill mid-transaction, that introduces
 ** additional overhead. This parameter can be used help identify
-** inefficiencies that can be resolve by increasing the cache size.
+** inefficiencies that can be resolved by increasing the cache size.
 ** </dd>
 **
 ** [[SQLITE_DBSTATUS_DEFERRED_FKS]] ^(<dt>SQLITE_DBSTATUS_DEFERRED_FKS</dt>
@@ -9026,7 +9351,7 @@ SQLITE_API int sqlite3_stmt_status(sqlite3_stmt*, int op,int resetFlg);
 **
 ** [[SQLITE_STMTSTATUS_REPREPARE]] <dt>SQLITE_STMTSTATUS_REPREPARE</dt>
 ** <dd>^This is the number of times that the prepare statement has been
-** automatically regenerated due to schema changes or change to
+** automatically regenerated due to schema changes or changes to
 ** [bound parameters] that might affect the query plan.
 **
 ** [[SQLITE_STMTSTATUS_RUN]] <dt>SQLITE_STMTSTATUS_RUN</dt>
@@ -9197,7 +9522,7 @@ struct sqlite3_pcache_page {
 **
 ** ^(SQLite will normally invoke xFetch() with a createFlag of 0 or 1.  SQLite
 ** will only use a createFlag of 2 after a prior call with a createFlag of 1
-** failed.)^  In between the to xFetch() calls, SQLite may
+** failed.)^  In between the xFetch() calls, SQLite may
 ** attempt to unpin one or more cache pages by spilling the content of
 ** pinned pages to disk and synching the operating system disk cache.
 **
@@ -9515,7 +9840,7 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p);
 ** the first argument to register for a callback that will be invoked
 ** when the blocking connections current transaction is concluded. ^The
 ** callback is invoked from within the [sqlite3_step] or [sqlite3_close]
-** call that concludes the blocking connections transaction.
+** call that concludes the blocking connection's transaction.
 **
 ** ^(If sqlite3_unlock_notify() is called in a multi-threaded application,
 ** there is a chance that the blocking connection will have already
@@ -9553,7 +9878,7 @@ SQLITE_API int sqlite3_backup_pagecount(sqlite3_backup *p);
 ** an unlock-notify callback is a pointer to an array of void* pointers,
 ** and the second is the number of entries in the array.
 **
-** When a blocking connections transaction is concluded, there may be
+** When a blocking connection's transaction is concluded, there may be
 ** more than one blocked connection that has registered for an unlock-notify
 ** callback. ^If two or more such blocked connections have specified the
 ** same callback function, then instead of invoking the callback function
@@ -9901,14 +10226,20 @@ SQLITE_API int sqlite3_wal_checkpoint_v2(
 ** If this interface is invoked outside the context of an xConnect or
 ** xCreate virtual table method then the behavior is undefined.
 **
-** At present, there is only one option that may be configured using
-** this function. (See [SQLITE_VTAB_CONSTRAINT_SUPPORT].)  Further options
-** may be added in the future.
+** In the call sqlite3_vtab_config(D,C,...) the D parameter is the
+** [database connection] in which the virtual table is being created and
+** which is passed in as the first argument to the [xConnect] or [xCreate]
+** method that is invoking sqlite3_vtab_config().  The C parameter is one
+** of the [virtual table configuration options].  The presence and meaning
+** of parameters after C depend on which [virtual table configuration option]
+** is used.
 */
 SQLITE_API int sqlite3_vtab_config(sqlite3*, int op, ...);
 
 /*
 ** CAPI3REF: Virtual Table Configuration Options
+** KEYWORDS: {virtual table configuration options}
+** KEYWORDS: {virtual table configuration option}
 **
 ** These macros define the various options to the
 ** [sqlite3_vtab_config()] interface that [virtual table] implementations
@@ -9916,7 +10247,7 @@ SQLITE_API int sqlite3_vtab_config(sqlite3*, int op, ...);
 **
 ** <dl>
 ** [[SQLITE_VTAB_CONSTRAINT_SUPPORT]]
-** <dt>SQLITE_VTAB_CONSTRAINT_SUPPORT
+** <dt>SQLITE_VTAB_CONSTRAINT_SUPPORT</dt>
 ** <dd>Calls of the form
 ** [sqlite3_vtab_config](db,SQLITE_VTAB_CONSTRAINT_SUPPORT,X) are supported,
 ** where X is an integer.  If X is zero, then the [virtual table] whose
@@ -9945,9 +10276,31 @@ SQLITE_API int sqlite3_vtab_config(sqlite3*, int op, ...);
 ** return SQLITE_OK. Or, if this is not possible, it may return
 ** SQLITE_CONSTRAINT, in which case SQLite falls back to OR ABORT
 ** constraint handling.
+** </dd>
+**
+** [[SQLITE_VTAB_DIRECTONLY]]<dt>SQLITE_VTAB_DIRECTONLY</dt>
+** <dd>Calls of the form
+** [sqlite3_vtab_config](db,SQLITE_VTAB_DIRECTONLY) from within the
+** the [xConnect] or [xCreate] methods of a [virtual table] implmentation
+** prohibits that virtual table from being used from within triggers and
+** views.
+** </dd>
+**
+** [[SQLITE_VTAB_INNOCUOUS]]<dt>SQLITE_VTAB_INNOCUOUS</dt>
+** <dd>Calls of the form
+** [sqlite3_vtab_config](db,SQLITE_VTAB_INNOCUOUS) from within the
+** the [xConnect] or [xCreate] methods of a [virtual table] implmentation
+** identify that virtual table as being safe to use from within triggers
+** and views.  Conceptually, the SQLITE_VTAB_INNOCUOUS tag means that the
+** virtual table can do no serious harm even if it is controlled by a
+** malicious hacker.  Developers should avoid setting the SQLITE_VTAB_INNOCUOUS
+** flag unless absolutely necessary.
+** </dd>
 ** </dl>
 */
 #define SQLITE_VTAB_CONSTRAINT_SUPPORT 1
+#define SQLITE_VTAB_INNOCUOUS          2
+#define SQLITE_VTAB_DIRECTONLY         3
 
 /*
 ** CAPI3REF: Determine The Virtual Table Conflict Policy
@@ -10027,15 +10380,15 @@ SQLITE_API SQLITE_EXPERIMENTAL const char *sqlite3_vtab_collation(sqlite3_index_
 **
 ** <dl>
 ** [[SQLITE_SCANSTAT_NLOOP]] <dt>SQLITE_SCANSTAT_NLOOP</dt>
-** <dd>^The [sqlite3_int64] variable pointed to by the T parameter will be
+** <dd>^The [sqlite3_int64] variable pointed to by the V parameter will be
 ** set to the total number of times that the X-th loop has run.</dd>
 **
 ** [[SQLITE_SCANSTAT_NVISIT]] <dt>SQLITE_SCANSTAT_NVISIT</dt>
-** <dd>^The [sqlite3_int64] variable pointed to by the T parameter will be set
+** <dd>^The [sqlite3_int64] variable pointed to by the V parameter will be set
 ** to the total number of rows examined by all iterations of the X-th loop.</dd>
 **
 ** [[SQLITE_SCANSTAT_EST]] <dt>SQLITE_SCANSTAT_EST</dt>
-** <dd>^The "double" variable pointed to by the T parameter will be set to the
+** <dd>^The "double" variable pointed to by the V parameter will be set to the
 ** query planner's estimate for the average number of rows output from each
 ** iteration of the X-th loop.  If the query planner's estimates was accurate,
 ** then this value will approximate the quotient NVISIT/NLOOP and the
@@ -10043,17 +10396,17 @@ SQLITE_API SQLITE_EXPERIMENTAL const char *sqlite3_vtab_collation(sqlite3_index_
 ** be the NLOOP value for the current loop.
 **
 ** [[SQLITE_SCANSTAT_NAME]] <dt>SQLITE_SCANSTAT_NAME</dt>
-** <dd>^The "const char *" variable pointed to by the T parameter will be set
+** <dd>^The "const char *" variable pointed to by the V parameter will be set
 ** to a zero-terminated UTF-8 string containing the name of the index or table
 ** used for the X-th loop.
 **
 ** [[SQLITE_SCANSTAT_EXPLAIN]] <dt>SQLITE_SCANSTAT_EXPLAIN</dt>
-** <dd>^The "const char *" variable pointed to by the T parameter will be set
+** <dd>^The "const char *" variable pointed to by the V parameter will be set
 ** to a zero-terminated UTF-8 string containing the [EXPLAIN QUERY PLAN]
 ** description for the X-th loop.
 **
 ** [[SQLITE_SCANSTAT_SELECTID]] <dt>SQLITE_SCANSTAT_SELECT</dt>
-** <dd>^The "int" variable pointed to by the T parameter will be set to the
+** <dd>^The "int" variable pointed to by the V parameter will be set to the
 ** "select-id" for the X-th loop.  The select-id identifies which query or
 ** subquery the loop is part of.  The main query has a select-id of zero.
 ** The select-id is the same value as is output in the first column
@@ -10167,7 +10520,7 @@ SQLITE_API int sqlite3_db_cacheflush(sqlite3*);
 **
 ** ^The preupdate hook only fires for changes to real database tables; the
 ** preupdate hook is not invoked for changes to [virtual tables] or to
-** system tables like sqlite_master or sqlite_stat1.
+** system tables like sqlite_sequence or sqlite_stat1.
 **
 ** ^The second parameter to the preupdate callback is a pointer to
 ** the [database connection] that registered the preupdate hook.
@@ -10908,7 +11261,7 @@ SQLITE_API int sqlite3session_attach(
 ** The second argument (xFilter) is the "filter callback". For changes to rows
 ** in tables that are not attached to the Session object, the filter is called
 ** to determine whether changes to the table's rows should be tracked or not.
-** If xFilter returns 0, changes is not tracked. Note that once a table is
+** If xFilter returns 0, changes are not tracked. Note that once a table is
 ** attached, xFilter will not be called again.
 */
 SQLITE_API void sqlite3session_table_filter(
@@ -11082,7 +11435,7 @@ SQLITE_API int sqlite3session_changeset(
 ** It an error if database zFrom does not exist or does not contain the
 ** required compatible table.
 **
-** If the operation successful, SQLITE_OK is returned. Otherwise, an SQLite
+** If the operation is successful, SQLITE_OK is returned. Otherwise, an SQLite
 ** error code. In this case, if argument pzErrMsg is not NULL, *pzErrMsg
 ** may be set to point to a buffer containing an English language error
 ** message. It is the responsibility of the caller to free this buffer using
@@ -11219,7 +11572,7 @@ SQLITE_API int sqlite3changeset_start_v2(
 ** CAPI3REF: Advance A Changeset Iterator
 ** METHOD: sqlite3_changeset_iter
 **
-** This function may only be used with iterators created by function
+** This function may only be used with iterators created by the function
 ** [sqlite3changeset_start()]. If it is called on an iterator passed to
 ** a conflict-handler callback by [sqlite3changeset_apply()], SQLITE_MISUSE
 ** is returned and the call has no effect.
@@ -11635,8 +11988,8 @@ SQLITE_API int sqlite3changegroup_new(sqlite3_changegroup **pp);
 ** case, this function fails with SQLITE_SCHEMA. If the input changeset
 ** appears to be corrupt and the corruption is detected, SQLITE_CORRUPT is
 ** returned. Or, if an out-of-memory condition occurs during processing, this
-** function returns SQLITE_NOMEM. In all cases, if an error occurs the
-** final contents of the changegroup is undefined.
+** function returns SQLITE_NOMEM. In all cases, if an error occurs the state
+** of the final contents of the changegroup is undefined.
 **
 ** If no error occurs, SQLITE_OK is returned.
 */
@@ -11811,7 +12164,7 @@ SQLITE_API void sqlite3changegroup_delete(sqlite3_changegroup*);
 **
 ** It is safe to execute SQL statements, including those that write to the
 ** table that the callback related to, from within the xConflict callback.
-** This can be used to further customize the applications conflict
+** This can be used to further customize the application's conflict
 ** resolution strategy.
 **
 ** All changes made by these functions are enclosed in a savepoint transaction.
@@ -12121,7 +12474,7 @@ SQLITE_API int sqlite3rebaser_configure(
 **
 ** Argument pIn must point to a buffer containing a changeset nIn bytes
 ** in size. This function allocates and populates a buffer with a copy
-** of the changeset rebased rebased according to the configuration of the
+** of the changeset rebased according to the configuration of the
 ** rebaser object passed as the first argument. If successful, (*ppOut)
 ** is set to point to the new buffer containing the rebased changeset and
 ** (*pnOut) to its size in bytes and SQLITE_OK returned. It is the
@@ -12529,7 +12882,7 @@ struct Fts5PhraseIter {
 **
 ** xSetAuxdata(pFts5, pAux, xDelete)
 **
-**   Save the pointer passed as the second argument as the extension functions
+**   Save the pointer passed as the second argument as the extension function's
 **   "auxiliary data". The pointer may then be retrieved by the current or any
 **   future invocation of the same fts5 extension function made as part of
 **   the same MATCH query using the xGetAuxdata() API.
@@ -12771,8 +13124,8 @@ struct Fts5ExtensionApi {
 **
 **   There are several ways to approach this in FTS5:
 **
-**   <ol><li> By mapping all synonyms to a single token. In this case, the
-**            In the above example, this means that the tokenizer returns the
+**   <ol><li> By mapping all synonyms to a single token. In this case, using
+**            the above example, this means that the tokenizer returns the
 **            same token for inputs "first" and "1st". Say that token is in
 **            fact "first", so that when the user inserts the document "I won
 **            1st place" entries are added to the index for tokens "i", "won",
@@ -13093,9 +13446,12 @@ struct fts5_api {
 
 /*
 ** The maximum value of a ?nnn wildcard that the parser will accept.
+** If the value exceeds 32767 then extra space is required for the Expr
+** structure.  But otherwise, we believe that the number can be as large
+** as a signed 32-bit integer can hold.
 */
 #ifndef SQLITE_MAX_VARIABLE_NUMBER
-# define SQLITE_MAX_VARIABLE_NUMBER 999
+# define SQLITE_MAX_VARIABLE_NUMBER 32766
 #endif
 
 /* Maximum page size.  The upper bound on this value is 65536.  This a limit
@@ -13185,6 +13541,21 @@ struct fts5_api {
 #endif
 
 /*
+** WAL mode depends on atomic aligned 32-bit loads and stores in a few
+** places.  The following macros try to make this explicit.
+*/
+#ifndef __has_extension
+# define __has_extension(x) 0     /* compatibility with non-clang compilers */
+#endif
+#if GCC_VERSION>=4007000 || __has_extension(c_atomic)
+# define AtomicLoad(PTR)       __atomic_load_n((PTR),__ATOMIC_RELAXED)
+# define AtomicStore(PTR,VAL)  __atomic_store_n((PTR),(VAL),__ATOMIC_RELAXED)
+#else
+# define AtomicLoad(PTR)       (*(PTR))
+# define AtomicStore(PTR,VAL)  (*(PTR) = (VAL))
+#endif
+
+/*
 ** Include standard header files as necessary
 */
 #ifdef HAVE_STDINT_H
@@ -13445,6 +13816,26 @@ SQLITE_PRIVATE   void sqlite3Coverage(int);
 #endif
 
 /*
+** The harmless(X) macro indicates that expression X is usually false
+** but can be true without causing any problems, but we don't know of
+** any way to cause X to be true.
+**
+** In debugging and testing builds, this macro will abort if X is ever
+** true.  In this way, developers are alerted to a possible test case
+** that causes X to be true.  If a harmless macro ever fails, that is
+** an opportunity to change the macro into a testcase() and add a new
+** test case to the test suite.
+**
+** For normal production builds, harmless(X) is a no-op, since it does
+** not matter whether expression X is true or false.
+*/
+#ifdef SQLITE_DEBUG
+# define harmless(X)  assert(!(X));
+#else
+# define harmless(X)
+#endif
+
+/*
 ** Some conditionals are optimizations only.  In other words, if the
 ** conditionals are replaced with a constant 1 (true) or 0 (false) then
 ** the correct answer is still obtained, though perhaps not as quickly.
@@ -13721,90 +14112,92 @@ SQLITE_PRIVATE void sqlite3HashClear(Hash*);
 #define TK_GROUPS                          92
 #define TK_OTHERS                          93
 #define TK_TIES                            94
-#define TK_REINDEX                         95
-#define TK_RENAME                          96
-#define TK_CTIME_KW                        97
-#define TK_ANY                             98
-#define TK_BITAND                          99
-#define TK_BITOR                          100
-#define TK_LSHIFT                         101
-#define TK_RSHIFT                         102
-#define TK_PLUS                           103
-#define TK_MINUS                          104
-#define TK_STAR                           105
-#define TK_SLASH                          106
-#define TK_REM                            107
-#define TK_CONCAT                         108
-#define TK_COLLATE                        109
-#define TK_BITNOT                         110
-#define TK_ON                             111
-#define TK_INDEXED                        112
-#define TK_STRING                         113
-#define TK_JOIN_KW                        114
-#define TK_CONSTRAINT                     115
-#define TK_DEFAULT                        116
-#define TK_NULL                           117
-#define TK_PRIMARY                        118
-#define TK_UNIQUE                         119
-#define TK_CHECK                          120
-#define TK_REFERENCES                     121
-#define TK_AUTOINCR                       122
-#define TK_INSERT                         123
-#define TK_DELETE                         124
-#define TK_UPDATE                         125
-#define TK_SET                            126
-#define TK_DEFERRABLE                     127
-#define TK_FOREIGN                        128
-#define TK_DROP                           129
-#define TK_UNION                          130
-#define TK_ALL                            131
-#define TK_EXCEPT                         132
-#define TK_INTERSECT                      133
-#define TK_SELECT                         134
-#define TK_VALUES                         135
-#define TK_DISTINCT                       136
-#define TK_DOT                            137
-#define TK_FROM                           138
-#define TK_JOIN                           139
-#define TK_USING                          140
-#define TK_ORDER                          141
-#define TK_GROUP                          142
-#define TK_HAVING                         143
-#define TK_LIMIT                          144
-#define TK_WHERE                          145
-#define TK_INTO                           146
-#define TK_NOTHING                        147
-#define TK_FLOAT                          148
-#define TK_BLOB                           149
-#define TK_INTEGER                        150
-#define TK_VARIABLE                       151
-#define TK_CASE                           152
-#define TK_WHEN                           153
-#define TK_THEN                           154
-#define TK_ELSE                           155
-#define TK_INDEX                          156
-#define TK_ALTER                          157
-#define TK_ADD                            158
-#define TK_WINDOW                         159
-#define TK_OVER                           160
-#define TK_FILTER                         161
-#define TK_COLUMN                         162
-#define TK_AGG_FUNCTION                   163
-#define TK_AGG_COLUMN                     164
-#define TK_TRUEFALSE                      165
-#define TK_ISNOT                          166
-#define TK_FUNCTION                       167
-#define TK_UMINUS                         168
-#define TK_UPLUS                          169
-#define TK_TRUTH                          170
-#define TK_REGISTER                       171
-#define TK_VECTOR                         172
-#define TK_SELECT_COLUMN                  173
-#define TK_IF_NULL_ROW                    174
-#define TK_ASTERISK                       175
-#define TK_SPAN                           176
-#define TK_SPACE                          177
-#define TK_ILLEGAL                        178
+#define TK_GENERATED                       95
+#define TK_ALWAYS                          96
+#define TK_REINDEX                         97
+#define TK_RENAME                          98
+#define TK_CTIME_KW                        99
+#define TK_ANY                            100
+#define TK_BITAND                         101
+#define TK_BITOR                          102
+#define TK_LSHIFT                         103
+#define TK_RSHIFT                         104
+#define TK_PLUS                           105
+#define TK_MINUS                          106
+#define TK_STAR                           107
+#define TK_SLASH                          108
+#define TK_REM                            109
+#define TK_CONCAT                         110
+#define TK_COLLATE                        111
+#define TK_BITNOT                         112
+#define TK_ON                             113
+#define TK_INDEXED                        114
+#define TK_STRING                         115
+#define TK_JOIN_KW                        116
+#define TK_CONSTRAINT                     117
+#define TK_DEFAULT                        118
+#define TK_NULL                           119
+#define TK_PRIMARY                        120
+#define TK_UNIQUE                         121
+#define TK_CHECK                          122
+#define TK_REFERENCES                     123
+#define TK_AUTOINCR                       124
+#define TK_INSERT                         125
+#define TK_DELETE                         126
+#define TK_UPDATE                         127
+#define TK_SET                            128
+#define TK_DEFERRABLE                     129
+#define TK_FOREIGN                        130
+#define TK_DROP                           131
+#define TK_UNION                          132
+#define TK_ALL                            133
+#define TK_EXCEPT                         134
+#define TK_INTERSECT                      135
+#define TK_SELECT                         136
+#define TK_VALUES                         137
+#define TK_DISTINCT                       138
+#define TK_DOT                            139
+#define TK_FROM                           140
+#define TK_JOIN                           141
+#define TK_USING                          142
+#define TK_ORDER                          143
+#define TK_GROUP                          144
+#define TK_HAVING                         145
+#define TK_LIMIT                          146
+#define TK_WHERE                          147
+#define TK_INTO                           148
+#define TK_NOTHING                        149
+#define TK_FLOAT                          150
+#define TK_BLOB                           151
+#define TK_INTEGER                        152
+#define TK_VARIABLE                       153
+#define TK_CASE                           154
+#define TK_WHEN                           155
+#define TK_THEN                           156
+#define TK_ELSE                           157
+#define TK_INDEX                          158
+#define TK_ALTER                          159
+#define TK_ADD                            160
+#define TK_WINDOW                         161
+#define TK_OVER                           162
+#define TK_FILTER                         163
+#define TK_COLUMN                         164
+#define TK_AGG_FUNCTION                   165
+#define TK_AGG_COLUMN                     166
+#define TK_TRUEFALSE                      167
+#define TK_ISNOT                          168
+#define TK_FUNCTION                       169
+#define TK_UMINUS                         170
+#define TK_UPLUS                          171
+#define TK_TRUTH                          172
+#define TK_REGISTER                       173
+#define TK_VECTOR                         174
+#define TK_SELECT_COLUMN                  175
+#define TK_IF_NULL_ROW                    176
+#define TK_ASTERISK                       177
+#define TK_SPAN                           178
+#define TK_SPACE                          179
+#define TK_ILLEGAL                        180
 
 /************** End of parse.h ***********************************************/
 /************** Continuing where we left off in sqliteInt.h ******************/
@@ -14147,6 +14540,7 @@ typedef INT16_TYPE LogEst;
 ** compilers.
 */
 #define LARGEST_INT64  (0xffffffff|(((i64)0x7fffffff)<<32))
+#define LARGEST_UINT64 (0xffffffff|(((u64)0xffffffff)<<32))
 #define SMALLEST_INT64 (((i64)-1) - LARGEST_INT64)
 
 /*
@@ -14224,6 +14618,16 @@ typedef INT16_TYPE LogEst;
 #else
 # define SELECTTRACE_ENABLED 0
 #endif
+#if defined(SQLITE_ENABLE_SELECTTRACE)
+# define SELECTTRACE_ENABLED 1
+# define SELECTTRACE(K,P,S,X)  \
+  if(sqlite3_unsupported_selecttrace&(K))   \
+    sqlite3DebugPrintf("%u/%d/%p: ",(S)->selId,(P)->addrExplain,(S)),\
+    sqlite3DebugPrintf X
+#else
+# define SELECTTRACE(K,P,S,X)
+# define SELECTTRACE_ENABLED 0
+#endif
 
 /*
 ** An instance of the following structure is used to store the busy-handler
@@ -14239,26 +14643,27 @@ struct BusyHandler {
   int (*xBusyHandler)(void *,int);  /* The busy callback */
   void *pBusyArg;                   /* First arg to busy callback */
   int nBusy;                        /* Incremented with each busy call */
-  u8 bExtraFileArg;                 /* Include sqlite3_file as callback arg */
 };
 
 /*
-** Name of the master database table.  The master database table
-** is a special table that holds the names and attributes of all
-** user tables and indices.
+** Name of table that holds the database schema.
 */
-#define MASTER_NAME       "sqlcipher_master"
-#define TEMP_MASTER_NAME  "sqlcipher_temp_master"
+#define DFLT_SCHEMA_TABLE          "sqlite_master"
+#define DFLT_TEMP_SCHEMA_TABLE     "sqlite_temp_master"
+#define ALT_SCHEMA_TABLE           "sqlite_schema"
+#define ALT_TEMP_SCHEMA_TABLE      "sqlite_temp_schema"
+
 
 /*
-** The root-page of the master database table.
+** The root-page of the schema table.
 */
-#define MASTER_ROOT       1
+#define SCHEMA_ROOT    1
 
 /*
-** The name of the schema table.
+** The name of the schema table.  The name is different for TEMP.
 */
-#define SCHEMA_TABLE(x)  ((!OMIT_TEMPDB)&&(x==1)?TEMP_MASTER_NAME:MASTER_NAME)
+#define SCHEMA_TABLE(x) \
+    ((!OMIT_TEMPDB)&&(x==1)?DFLT_TEMP_SCHEMA_TABLE:DFLT_SCHEMA_TABLE)
 
 /*
 ** A convenience macro that returns the number of elements in
@@ -14279,7 +14684,7 @@ struct BusyHandler {
 ** pointer will work here as long as it is distinct from SQLITE_STATIC
 ** and SQLITE_TRANSIENT.
 */
-#define SQLITE_DYNAMIC   ((sqlite3_destructor_type)sqlite3MallocSize)
+#define SQLITE_DYNAMIC   ((sqlite3_destructor_type)sqlite3OomFault)
 
 /*
 ** When SQLITE_OMIT_WSD is defined, it means that the target platform does
@@ -14402,6 +14807,7 @@ typedef struct With With;
 ** A bit in a Bitmask
 */
 #define MASKBIT(n)   (((Bitmask)1)<<(n))
+#define MASKBIT64(n) (((u64)1)<<(n))
 #define MASKBIT32(n) (((unsigned int)1)<<(n))
 #define ALLBITS      ((Bitmask)-1)
 
@@ -14418,6 +14824,264 @@ typedef int VList;
 ** "BusyHandler" typedefs. vdbe.h also requires a few of the opaque
 ** pointer types (i.e. FuncDef) defined above.
 */
+/************** Include pager.h in the middle of sqliteInt.h *****************/
+/************** Begin file pager.h *******************************************/
+/*
+** 2001 September 15
+**
+** The author disclaims copyright to this source code.  In place of
+** a legal notice, here is a blessing:
+**
+**    May you do good and not evil.
+**    May you find forgiveness for yourself and forgive others.
+**    May you share freely, never taking more than you give.
+**
+*************************************************************************
+** This header file defines the interface that the sqlite page cache
+** subsystem.  The page cache subsystem reads and writes a file a page
+** at a time and provides a journal for rollback.
+*/
+
+#ifndef SQLITE_PAGER_H
+#define SQLITE_PAGER_H
+
+/*
+** Default maximum size for persistent journal files. A negative
+** value means no limit. This value may be overridden using the
+** sqlite3PagerJournalSizeLimit() API. See also "PRAGMA journal_size_limit".
+*/
+#ifndef SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT
+  #define SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT -1
+#endif
+
+/*
+** The type used to represent a page number.  The first page in a file
+** is called page 1.  0 is used to represent "not a page".
+*/
+typedef u32 Pgno;
+
+/*
+** Each open file is managed by a separate instance of the "Pager" structure.
+*/
+typedef struct Pager Pager;
+
+/*
+** Handle type for pages.
+*/
+typedef struct PgHdr DbPage;
+
+/*
+** Page number PAGER_MJ_PGNO is never used in an SQLite database (it is
+** reserved for working around a windows/posix incompatibility). It is
+** used in the journal to signify that the remainder of the journal file
+** is devoted to storing a super-journal name - there are no more pages to
+** roll back. See comments for function writeSuperJournal() in pager.c
+** for details.
+*/
+#define PAGER_MJ_PGNO(x) ((Pgno)((PENDING_BYTE/((x)->pageSize))+1))
+
+/*
+** Allowed values for the flags parameter to sqlite3PagerOpen().
+**
+** NOTE: These values must match the corresponding BTREE_ values in btree.h.
+*/
+#define PAGER_OMIT_JOURNAL  0x0001    /* Do not use a rollback journal */
+#define PAGER_MEMORY        0x0002    /* In-memory database */
+
+/*
+** Valid values for the second argument to sqlite3PagerLockingMode().
+*/
+#define PAGER_LOCKINGMODE_QUERY      -1
+#define PAGER_LOCKINGMODE_NORMAL      0
+#define PAGER_LOCKINGMODE_EXCLUSIVE   1
+
+/*
+** Numeric constants that encode the journalmode.
+**
+** The numeric values encoded here (other than PAGER_JOURNALMODE_QUERY)
+** are exposed in the API via the "PRAGMA journal_mode" command and
+** therefore cannot be changed without a compatibility break.
+*/
+#define PAGER_JOURNALMODE_QUERY     (-1)  /* Query the value of journalmode */
+#define PAGER_JOURNALMODE_DELETE      0   /* Commit by deleting journal file */
+#define PAGER_JOURNALMODE_PERSIST     1   /* Commit by zeroing journal header */
+#define PAGER_JOURNALMODE_OFF         2   /* Journal omitted.  */
+#define PAGER_JOURNALMODE_TRUNCATE    3   /* Commit by truncating journal */
+#define PAGER_JOURNALMODE_MEMORY      4   /* In-memory journal file */
+#define PAGER_JOURNALMODE_WAL         5   /* Use write-ahead logging */
+
+/*
+** Flags that make up the mask passed to sqlite3PagerGet().
+*/
+#define PAGER_GET_NOCONTENT     0x01  /* Do not load data from disk */
+#define PAGER_GET_READONLY      0x02  /* Read-only page is acceptable */
+
+/*
+** Flags for sqlite3PagerSetFlags()
+**
+** Value constraints (enforced via assert()):
+**    PAGER_FULLFSYNC      == SQLITE_FullFSync
+**    PAGER_CKPT_FULLFSYNC == SQLITE_CkptFullFSync
+**    PAGER_CACHE_SPILL    == SQLITE_CacheSpill
+*/
+#define PAGER_SYNCHRONOUS_OFF       0x01  /* PRAGMA synchronous=OFF */
+#define PAGER_SYNCHRONOUS_NORMAL    0x02  /* PRAGMA synchronous=NORMAL */
+#define PAGER_SYNCHRONOUS_FULL      0x03  /* PRAGMA synchronous=FULL */
+#define PAGER_SYNCHRONOUS_EXTRA     0x04  /* PRAGMA synchronous=EXTRA */
+#define PAGER_SYNCHRONOUS_MASK      0x07  /* Mask for four values above */
+#define PAGER_FULLFSYNC             0x08  /* PRAGMA fullfsync=ON */
+#define PAGER_CKPT_FULLFSYNC        0x10  /* PRAGMA checkpoint_fullfsync=ON */
+#define PAGER_CACHESPILL            0x20  /* PRAGMA cache_spill=ON */
+#define PAGER_FLAGS_MASK            0x38  /* All above except SYNCHRONOUS */
+
+/*
+** The remainder of this file contains the declarations of the functions
+** that make up the Pager sub-system API. See source code comments for
+** a detailed description of each routine.
+*/
+
+/* Open and close a Pager connection. */
+SQLITE_PRIVATE int sqlite3PagerOpen(
+  sqlite3_vfs*,
+  Pager **ppPager,
+  const char*,
+  int,
+  int,
+  int,
+  void(*)(DbPage*)
+);
+SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager, sqlite3*);
+SQLITE_PRIVATE int sqlite3PagerReadFileheader(Pager*, int, unsigned char*);
+
+/* Functions used to configure a Pager object. */
+SQLITE_PRIVATE void sqlite3PagerSetBusyHandler(Pager*, int(*)(void *), void *);
+SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager*, u32*, int);
+/* BEGIN SQLCIPHER */
+#ifdef SQLITE_HAS_CODEC
+SQLITE_PRIVATE void sqlite3PagerAlignReserve(Pager*,Pager*);
+#endif
+/* END SQLCIPHER */
+SQLITE_PRIVATE Pgno sqlite3PagerMaxPageCount(Pager*, Pgno);
+SQLITE_PRIVATE void sqlite3PagerSetCachesize(Pager*, int);
+SQLITE_PRIVATE int sqlite3PagerSetSpillsize(Pager*, int);
+SQLITE_PRIVATE void sqlite3PagerSetMmapLimit(Pager *, sqlite3_int64);
+SQLITE_PRIVATE void sqlite3PagerShrink(Pager*);
+SQLITE_PRIVATE void sqlite3PagerSetFlags(Pager*,unsigned);
+SQLITE_PRIVATE int sqlite3PagerLockingMode(Pager *, int);
+SQLITE_PRIVATE int sqlite3PagerSetJournalMode(Pager *, int);
+SQLITE_PRIVATE int sqlite3PagerGetJournalMode(Pager*);
+SQLITE_PRIVATE int sqlite3PagerOkToChangeJournalMode(Pager*);
+SQLITE_PRIVATE i64 sqlite3PagerJournalSizeLimit(Pager *, i64);
+SQLITE_PRIVATE sqlite3_backup **sqlite3PagerBackupPtr(Pager*);
+SQLITE_PRIVATE int sqlite3PagerFlush(Pager*);
+
+/* Functions used to obtain and release page references. */
+SQLITE_PRIVATE int sqlite3PagerGet(Pager *pPager, Pgno pgno, DbPage **ppPage, int clrFlag);
+SQLITE_PRIVATE DbPage *sqlite3PagerLookup(Pager *pPager, Pgno pgno);
+SQLITE_PRIVATE void sqlite3PagerRef(DbPage*);
+SQLITE_PRIVATE void sqlite3PagerUnref(DbPage*);
+SQLITE_PRIVATE void sqlite3PagerUnrefNotNull(DbPage*);
+SQLITE_PRIVATE void sqlite3PagerUnrefPageOne(DbPage*);
+
+/* Operations on page references. */
+SQLITE_PRIVATE int sqlite3PagerWrite(DbPage*);
+SQLITE_PRIVATE void sqlite3PagerDontWrite(DbPage*);
+SQLITE_PRIVATE int sqlite3PagerMovepage(Pager*,DbPage*,Pgno,int);
+SQLITE_PRIVATE int sqlite3PagerPageRefcount(DbPage*);
+SQLITE_PRIVATE void *sqlite3PagerGetData(DbPage *);
+SQLITE_PRIVATE void *sqlite3PagerGetExtra(DbPage *);
+
+/* Functions used to manage pager transactions and savepoints. */
+SQLITE_PRIVATE void sqlite3PagerPagecount(Pager*, int*);
+SQLITE_PRIVATE int sqlite3PagerBegin(Pager*, int exFlag, int);
+SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(Pager*,const char *zSuper, int);
+SQLITE_PRIVATE int sqlite3PagerExclusiveLock(Pager*);
+SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager, const char *zSuper);
+SQLITE_PRIVATE int sqlite3PagerCommitPhaseTwo(Pager*);
+SQLITE_PRIVATE int sqlite3PagerRollback(Pager*);
+SQLITE_PRIVATE int sqlite3PagerOpenSavepoint(Pager *pPager, int n);
+SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint);
+SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager);
+
+#ifndef SQLITE_OMIT_WAL
+SQLITE_PRIVATE   int sqlite3PagerCheckpoint(Pager *pPager, sqlite3*, int, int*, int*);
+SQLITE_PRIVATE   int sqlite3PagerWalSupported(Pager *pPager);
+SQLITE_PRIVATE   int sqlite3PagerWalCallback(Pager *pPager);
+SQLITE_PRIVATE   int sqlite3PagerOpenWal(Pager *pPager, int *pisOpen);
+SQLITE_PRIVATE   int sqlite3PagerCloseWal(Pager *pPager, sqlite3*);
+# ifdef SQLITE_ENABLE_SNAPSHOT
+SQLITE_PRIVATE   int sqlite3PagerSnapshotGet(Pager*, sqlite3_snapshot **ppSnapshot);
+SQLITE_PRIVATE   int sqlite3PagerSnapshotOpen(Pager*, sqlite3_snapshot *pSnapshot);
+SQLITE_PRIVATE   int sqlite3PagerSnapshotRecover(Pager *pPager);
+SQLITE_PRIVATE   int sqlite3PagerSnapshotCheck(Pager *pPager, sqlite3_snapshot *pSnapshot);
+SQLITE_PRIVATE   void sqlite3PagerSnapshotUnlock(Pager *pPager);
+# endif
+#endif
+
+#if !defined(SQLITE_OMIT_WAL) && defined(SQLITE_ENABLE_SETLK_TIMEOUT)
+SQLITE_PRIVATE   int sqlite3PagerWalWriteLock(Pager*, int);
+SQLITE_PRIVATE   void sqlite3PagerWalDb(Pager*, sqlite3*);
+#else
+# define sqlite3PagerWalWriteLock(y,z) SQLITE_OK
+# define sqlite3PagerWalDb(x,y)
+#endif
+
+#ifdef SQLITE_DIRECT_OVERFLOW_READ
+SQLITE_PRIVATE   int sqlite3PagerDirectReadOk(Pager *pPager, Pgno pgno);
+#endif
+
+#ifdef SQLITE_ENABLE_ZIPVFS
+SQLITE_PRIVATE   int sqlite3PagerWalFramesize(Pager *pPager);
+#endif
+
+/* Functions used to query pager state and configuration. */
+SQLITE_PRIVATE u8 sqlite3PagerIsreadonly(Pager*);
+SQLITE_PRIVATE u32 sqlite3PagerDataVersion(Pager*);
+#ifdef SQLITE_DEBUG
+SQLITE_PRIVATE   int sqlite3PagerRefcount(Pager*);
+#endif
+SQLITE_PRIVATE int sqlite3PagerMemUsed(Pager*);
+SQLITE_PRIVATE const char *sqlite3PagerFilename(const Pager*, int);
+SQLITE_PRIVATE sqlite3_vfs *sqlite3PagerVfs(Pager*);
+SQLITE_PRIVATE sqlite3_file *sqlite3PagerFile(Pager*);
+SQLITE_PRIVATE sqlite3_file *sqlite3PagerJrnlFile(Pager*);
+SQLITE_PRIVATE const char *sqlite3PagerJournalname(Pager*);
+SQLITE_PRIVATE void *sqlite3PagerTempSpace(Pager*);
+SQLITE_PRIVATE int sqlite3PagerIsMemdb(Pager*);
+SQLITE_PRIVATE void sqlite3PagerCacheStat(Pager *, int, int, int *);
+SQLITE_PRIVATE void sqlite3PagerClearCache(Pager*);
+SQLITE_PRIVATE int sqlite3SectorSize(sqlite3_file *);
+
+/* Functions used to truncate the database file. */
+SQLITE_PRIVATE void sqlite3PagerTruncateImage(Pager*,Pgno);
+
+SQLITE_PRIVATE void sqlite3PagerRekey(DbPage*, Pgno, u16);
+
+/* BEGIN SQLCIPHER */
+#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_WAL)
+SQLITE_PRIVATE void *sqlite3PagerCodec(DbPage *);
+#endif
+/* END SQLCIPHER */
+
+/* Functions to support testing and debugging. */
+#if !defined(NDEBUG) || defined(SQLITE_TEST)
+SQLITE_PRIVATE   Pgno sqlite3PagerPagenumber(DbPage*);
+SQLITE_PRIVATE   int sqlite3PagerIswriteable(DbPage*);
+#endif
+#ifdef SQLITE_TEST
+SQLITE_PRIVATE   int *sqlite3PagerStats(Pager*);
+SQLITE_PRIVATE   void sqlite3PagerRefdump(Pager*);
+  void disable_simulated_io_errors(void);
+  void enable_simulated_io_errors(void);
+#else
+# define disable_simulated_io_errors()
+# define enable_simulated_io_errors()
+#endif
+
+#endif /* SQLITE_PAGER_H */
+
+/************** End of pager.h ***********************************************/
+/************** Continuing where we left off in sqliteInt.h ******************/
 /************** Include btree.h in the middle of sqliteInt.h *****************/
 /************** Begin file btree.h *******************************************/
 /*
@@ -14493,20 +15157,20 @@ SQLITE_PRIVATE   int sqlite3BtreeSetMmapLimit(Btree*,sqlite3_int64);
 SQLITE_PRIVATE int sqlite3BtreeSetPagerFlags(Btree*,unsigned);
 SQLITE_PRIVATE int sqlite3BtreeSetPageSize(Btree *p, int nPagesize, int nReserve, int eFix);
 SQLITE_PRIVATE int sqlite3BtreeGetPageSize(Btree*);
-SQLITE_PRIVATE int sqlite3BtreeMaxPageCount(Btree*,int);
-SQLITE_PRIVATE u32 sqlite3BtreeLastPage(Btree*);
+SQLITE_PRIVATE Pgno sqlite3BtreeMaxPageCount(Btree*,Pgno);
+SQLITE_PRIVATE Pgno sqlite3BtreeLastPage(Btree*);
 SQLITE_PRIVATE int sqlite3BtreeSecureDelete(Btree*,int);
-SQLITE_PRIVATE int sqlite3BtreeGetOptimalReserve(Btree*);
+SQLITE_PRIVATE int sqlite3BtreeGetRequestedReserve(Btree*);
 SQLITE_PRIVATE int sqlite3BtreeGetReserveNoMutex(Btree *p);
 SQLITE_PRIVATE int sqlite3BtreeSetAutoVacuum(Btree *, int);
 SQLITE_PRIVATE int sqlite3BtreeGetAutoVacuum(Btree *);
 SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree*,int,int*);
-SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree*, const char *zMaster);
+SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree*, const char*);
 SQLITE_PRIVATE int sqlite3BtreeCommitPhaseTwo(Btree*, int);
 SQLITE_PRIVATE int sqlite3BtreeCommit(Btree*);
 SQLITE_PRIVATE int sqlite3BtreeRollback(Btree*,int,int);
 SQLITE_PRIVATE int sqlite3BtreeBeginStmt(Btree*,int);
-SQLITE_PRIVATE int sqlite3BtreeCreateTable(Btree*, int*, int flags);
+SQLITE_PRIVATE int sqlite3BtreeCreateTable(Btree*, Pgno*, int flags);
 SQLITE_PRIVATE int sqlite3BtreeIsInTrans(Btree*);
 SQLITE_PRIVATE int sqlite3BtreeIsInReadTrans(Btree*);
 SQLITE_PRIVATE int sqlite3BtreeIsInBackup(Btree*);
@@ -14647,7 +15311,7 @@ SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p);
 
 SQLITE_PRIVATE int sqlite3BtreeCursor(
   Btree*,                              /* BTree containing table to open */
-  int iTable,                          /* Index of root page */
+  Pgno iTable,                         /* Index of root page */
   int wrFlag,                          /* 1 for writing.  0 for read-only */
   struct KeyInfo*,                     /* First argument to compare function */
   BtCursor *pCursor                    /* Space to write cursor structure */
@@ -14728,6 +15392,8 @@ SQLITE_PRIVATE int sqlite3BtreeNext(BtCursor*, int flags);
 SQLITE_PRIVATE int sqlite3BtreeEof(BtCursor*);
 SQLITE_PRIVATE int sqlite3BtreePrevious(BtCursor*, int flags);
 SQLITE_PRIVATE i64 sqlite3BtreeIntegerKey(BtCursor*);
+SQLITE_PRIVATE void sqlite3BtreeCursorPin(BtCursor*);
+SQLITE_PRIVATE void sqlite3BtreeCursorUnpin(BtCursor*);
 #ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC
 SQLITE_PRIVATE i64 sqlite3BtreeOffset(BtCursor*);
 #endif
@@ -14736,7 +15402,7 @@ SQLITE_PRIVATE const void *sqlite3BtreePayloadFetch(BtCursor*, u32 *pAmt);
 SQLITE_PRIVATE u32 sqlite3BtreePayloadSize(BtCursor*);
 SQLITE_PRIVATE sqlite3_int64 sqlite3BtreeMaxRecordSize(BtCursor*);
 
-SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(Btree*, int *aRoot, int nRoot, int, int*);
+SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(sqlite3*,Btree*,Pgno*aRoot,int nRoot,int,int*);
 SQLITE_PRIVATE struct Pager *sqlite3BtreePager(Btree*);
 SQLITE_PRIVATE i64 sqlite3BtreeRowCountEst(BtCursor*);
 
@@ -14756,9 +15422,7 @@ SQLITE_PRIVATE int sqlite3BtreeCursorIsValid(BtCursor*);
 #endif
 SQLITE_PRIVATE int sqlite3BtreeCursorIsValidNN(BtCursor*);
 
-#ifndef SQLITE_OMIT_BTREECOUNT
-SQLITE_PRIVATE int sqlite3BtreeCount(BtCursor *, i64 *);
-#endif
+SQLITE_PRIVATE int sqlite3BtreeCount(sqlite3*, BtCursor*, i64*);
 
 #ifdef SQLITE_TEST
 SQLITE_PRIVATE int sqlite3BtreeCursorInfo(BtCursor*, int*, int);
@@ -14875,7 +15539,7 @@ struct VdbeOp {
     Mem *pMem;             /* Used when p4type is P4_MEM */
     VTable *pVtab;         /* Used when p4type is P4_VTAB */
     KeyInfo *pKeyInfo;     /* Used when p4type is P4_KEYINFO */
-    int *ai;               /* Used when p4type is P4_INTARRAY */
+    u32 *ai;               /* Used when p4type is P4_INTARRAY */
     SubProgram *pProgram;  /* Used when p4type is P4_SUBPROGRAM */
     Table *pTab;           /* Used when p4type is P4_TABLE */
 #ifdef SQLITE_ENABLE_CURSOR_HINTS
@@ -15014,30 +15678,30 @@ typedef struct VdbeOpList VdbeOpList;
 #define OP_SeekLE         23 /* jump, synopsis: key=r[P3@P4]               */
 #define OP_SeekGE         24 /* jump, synopsis: key=r[P3@P4]               */
 #define OP_SeekGT         25 /* jump, synopsis: key=r[P3@P4]               */
-#define OP_IfNoHope       26 /* jump, synopsis: key=r[P3@P4]               */
-#define OP_NoConflict     27 /* jump, synopsis: key=r[P3@P4]               */
-#define OP_NotFound       28 /* jump, synopsis: key=r[P3@P4]               */
-#define OP_Found          29 /* jump, synopsis: key=r[P3@P4]               */
-#define OP_SeekRowid      30 /* jump, synopsis: intkey=r[P3]               */
-#define OP_NotExists      31 /* jump, synopsis: intkey=r[P3]               */
-#define OP_Last           32 /* jump                                       */
-#define OP_IfSmaller      33 /* jump                                       */
-#define OP_SorterSort     34 /* jump                                       */
-#define OP_Sort           35 /* jump                                       */
-#define OP_Rewind         36 /* jump                                       */
-#define OP_IdxLE          37 /* jump, synopsis: key=r[P3@P4]               */
-#define OP_IdxGT          38 /* jump, synopsis: key=r[P3@P4]               */
-#define OP_IdxLT          39 /* jump, synopsis: key=r[P3@P4]               */
-#define OP_IdxGE          40 /* jump, synopsis: key=r[P3@P4]               */
-#define OP_RowSetRead     41 /* jump, synopsis: r[P3]=rowset(P1)           */
-#define OP_RowSetTest     42 /* jump, synopsis: if r[P3] in rowset(P1) goto P2 */
+#define OP_IfNotOpen      26 /* jump, synopsis: if( !csr[P1] ) goto P2     */
+#define OP_IfNoHope       27 /* jump, synopsis: key=r[P3@P4]               */
+#define OP_NoConflict     28 /* jump, synopsis: key=r[P3@P4]               */
+#define OP_NotFound       29 /* jump, synopsis: key=r[P3@P4]               */
+#define OP_Found          30 /* jump, synopsis: key=r[P3@P4]               */
+#define OP_SeekRowid      31 /* jump, synopsis: intkey=r[P3]               */
+#define OP_NotExists      32 /* jump, synopsis: intkey=r[P3]               */
+#define OP_Last           33 /* jump                                       */
+#define OP_IfSmaller      34 /* jump                                       */
+#define OP_SorterSort     35 /* jump                                       */
+#define OP_Sort           36 /* jump                                       */
+#define OP_Rewind         37 /* jump                                       */
+#define OP_IdxLE          38 /* jump, synopsis: key=r[P3@P4]               */
+#define OP_IdxGT          39 /* jump, synopsis: key=r[P3@P4]               */
+#define OP_IdxLT          40 /* jump, synopsis: key=r[P3@P4]               */
+#define OP_IdxGE          41 /* jump, synopsis: key=r[P3@P4]               */
+#define OP_RowSetRead     42 /* jump, synopsis: r[P3]=rowset(P1)           */
 #define OP_Or             43 /* same as TK_OR, synopsis: r[P3]=(r[P1] || r[P2]) */
 #define OP_And            44 /* same as TK_AND, synopsis: r[P3]=(r[P1] && r[P2]) */
-#define OP_Program        45 /* jump                                       */
-#define OP_FkIfZero       46 /* jump, synopsis: if fkctr[P1]==0 goto P2    */
-#define OP_IfPos          47 /* jump, synopsis: if r[P1]>0 then r[P1]-=P3, goto P2 */
-#define OP_IfNotZero      48 /* jump, synopsis: if r[P1]!=0 then r[P1]--, goto P2 */
-#define OP_DecrJumpZero   49 /* jump, synopsis: if (--r[P1])==0 goto P2    */
+#define OP_RowSetTest     45 /* jump, synopsis: if r[P3] in rowset(P1) goto P2 */
+#define OP_Program        46 /* jump                                       */
+#define OP_FkIfZero       47 /* jump, synopsis: if fkctr[P1]==0 goto P2    */
+#define OP_IfPos          48 /* jump, synopsis: if r[P1]>0 then r[P1]-=P3, goto P2 */
+#define OP_IfNotZero      49 /* jump, synopsis: if r[P1]!=0 then r[P1]--, goto P2 */
 #define OP_IsNull         50 /* jump, same as TK_ISNULL, synopsis: if r[P1]==NULL goto P2 */
 #define OP_NotNull        51 /* jump, same as TK_NOTNULL, synopsis: if r[P1]!=NULL goto P2 */
 #define OP_Ne             52 /* jump, same as TK_NE, synopsis: IF r[P3]!=r[P1] */
@@ -15047,83 +15711,83 @@ typedef struct VdbeOpList VdbeOpList;
 #define OP_Lt             56 /* jump, same as TK_LT, synopsis: IF r[P3]<r[P1] */
 #define OP_Ge             57 /* jump, same as TK_GE, synopsis: IF r[P3]>=r[P1] */
 #define OP_ElseNotEq      58 /* jump, same as TK_ESCAPE                    */
-#define OP_IncrVacuum     59 /* jump                                       */
-#define OP_VNext          60 /* jump                                       */
-#define OP_Init           61 /* jump, synopsis: Start at P2                */
-#define OP_PureFunc0      62
-#define OP_Function0      63 /* synopsis: r[P3]=func(r[P2@P5])             */
-#define OP_PureFunc       64
-#define OP_Function       65 /* synopsis: r[P3]=func(r[P2@P5])             */
-#define OP_Return         66
-#define OP_EndCoroutine   67
-#define OP_HaltIfNull     68 /* synopsis: if r[P3]=null halt               */
-#define OP_Halt           69
-#define OP_Integer        70 /* synopsis: r[P2]=P1                         */
-#define OP_Int64          71 /* synopsis: r[P2]=P4                         */
-#define OP_String         72 /* synopsis: r[P2]='P4' (len=P1)              */
-#define OP_Null           73 /* synopsis: r[P2..P3]=NULL                   */
-#define OP_SoftNull       74 /* synopsis: r[P1]=NULL                       */
-#define OP_Blob           75 /* synopsis: r[P2]=P4 (len=P1)                */
-#define OP_Variable       76 /* synopsis: r[P2]=parameter(P1,P4)           */
-#define OP_Move           77 /* synopsis: r[P2@P3]=r[P1@P3]                */
-#define OP_Copy           78 /* synopsis: r[P2@P3+1]=r[P1@P3+1]            */
-#define OP_SCopy          79 /* synopsis: r[P2]=r[P1]                      */
-#define OP_IntCopy        80 /* synopsis: r[P2]=r[P1]                      */
-#define OP_ResultRow      81 /* synopsis: output=r[P1@P2]                  */
-#define OP_CollSeq        82
-#define OP_AddImm         83 /* synopsis: r[P1]=r[P1]+P2                   */
-#define OP_RealAffinity   84
-#define OP_Cast           85 /* synopsis: affinity(r[P1])                  */
-#define OP_Permutation    86
-#define OP_Compare        87 /* synopsis: r[P1@P3] <-> r[P2@P3]            */
-#define OP_IsTrue         88 /* synopsis: r[P2] = coalesce(r[P1]==TRUE,P3) ^ P4 */
-#define OP_Offset         89 /* synopsis: r[P3] = sqlite_offset(P1)        */
-#define OP_Column         90 /* synopsis: r[P3]=PX                         */
-#define OP_Affinity       91 /* synopsis: affinity(r[P1@P2])               */
-#define OP_MakeRecord     92 /* synopsis: r[P3]=mkrec(r[P1@P2])            */
-#define OP_Count          93 /* synopsis: r[P2]=count()                    */
-#define OP_ReadCookie     94
-#define OP_SetCookie      95
-#define OP_ReopenIdx      96 /* synopsis: root=P2 iDb=P3                   */
-#define OP_OpenRead       97 /* synopsis: root=P2 iDb=P3                   */
-#define OP_OpenWrite      98 /* synopsis: root=P2 iDb=P3                   */
-#define OP_BitAnd         99 /* same as TK_BITAND, synopsis: r[P3]=r[P1]&r[P2] */
-#define OP_BitOr         100 /* same as TK_BITOR, synopsis: r[P3]=r[P1]|r[P2] */
-#define OP_ShiftLeft     101 /* same as TK_LSHIFT, synopsis: r[P3]=r[P2]<<r[P1] */
-#define OP_ShiftRight    102 /* same as TK_RSHIFT, synopsis: r[P3]=r[P2]>>r[P1] */
-#define OP_Add           103 /* same as TK_PLUS, synopsis: r[P3]=r[P1]+r[P2] */
-#define OP_Subtract      104 /* same as TK_MINUS, synopsis: r[P3]=r[P2]-r[P1] */
-#define OP_Multiply      105 /* same as TK_STAR, synopsis: r[P3]=r[P1]*r[P2] */
-#define OP_Divide        106 /* same as TK_SLASH, synopsis: r[P3]=r[P2]/r[P1] */
-#define OP_Remainder     107 /* same as TK_REM, synopsis: r[P3]=r[P2]%r[P1] */
-#define OP_Concat        108 /* same as TK_CONCAT, synopsis: r[P3]=r[P2]+r[P1] */
-#define OP_OpenDup       109
-#define OP_BitNot        110 /* same as TK_BITNOT, synopsis: r[P2]= ~r[P1] */
-#define OP_OpenAutoindex 111 /* synopsis: nColumn=P2                       */
-#define OP_OpenEphemeral 112 /* synopsis: nColumn=P2                       */
-#define OP_String8       113 /* same as TK_STRING, synopsis: r[P2]='P4'    */
-#define OP_SorterOpen    114
-#define OP_SequenceTest  115 /* synopsis: if( cursor[P1].ctr++ ) pc = P2   */
-#define OP_OpenPseudo    116 /* synopsis: P3 columns in r[P2]              */
-#define OP_Close         117
-#define OP_ColumnsUsed   118
-#define OP_SeekHit       119 /* synopsis: seekHit=P2                       */
-#define OP_Sequence      120 /* synopsis: r[P2]=cursor[P1].ctr++           */
-#define OP_NewRowid      121 /* synopsis: r[P2]=rowid                      */
-#define OP_Insert        122 /* synopsis: intkey=r[P3] data=r[P2]          */
-#define OP_Delete        123
-#define OP_ResetCount    124
-#define OP_SorterCompare 125 /* synopsis: if key(P1)!=trim(r[P3],P4) goto P2 */
-#define OP_SorterData    126 /* synopsis: r[P2]=data                       */
-#define OP_RowData       127 /* synopsis: r[P2]=data                       */
-#define OP_Rowid         128 /* synopsis: r[P2]=rowid                      */
-#define OP_NullRow       129
-#define OP_SeekEnd       130
+#define OP_DecrJumpZero   59 /* jump, synopsis: if (--r[P1])==0 goto P2    */
+#define OP_IncrVacuum     60 /* jump                                       */
+#define OP_VNext          61 /* jump                                       */
+#define OP_Init           62 /* jump, synopsis: Start at P2                */
+#define OP_PureFunc       63 /* synopsis: r[P3]=func(r[P2@NP])             */
+#define OP_Function       64 /* synopsis: r[P3]=func(r[P2@NP])             */
+#define OP_Return         65
+#define OP_EndCoroutine   66
+#define OP_HaltIfNull     67 /* synopsis: if r[P3]=null halt               */
+#define OP_Halt           68
+#define OP_Integer        69 /* synopsis: r[P2]=P1                         */
+#define OP_Int64          70 /* synopsis: r[P2]=P4                         */
+#define OP_String         71 /* synopsis: r[P2]='P4' (len=P1)              */
+#define OP_Null           72 /* synopsis: r[P2..P3]=NULL                   */
+#define OP_SoftNull       73 /* synopsis: r[P1]=NULL                       */
+#define OP_Blob           74 /* synopsis: r[P2]=P4 (len=P1)                */
+#define OP_Variable       75 /* synopsis: r[P2]=parameter(P1,P4)           */
+#define OP_Move           76 /* synopsis: r[P2@P3]=r[P1@P3]                */
+#define OP_Copy           77 /* synopsis: r[P2@P3+1]=r[P1@P3+1]            */
+#define OP_SCopy          78 /* synopsis: r[P2]=r[P1]                      */
+#define OP_IntCopy        79 /* synopsis: r[P2]=r[P1]                      */
+#define OP_ResultRow      80 /* synopsis: output=r[P1@P2]                  */
+#define OP_CollSeq        81
+#define OP_AddImm         82 /* synopsis: r[P1]=r[P1]+P2                   */
+#define OP_RealAffinity   83
+#define OP_Cast           84 /* synopsis: affinity(r[P1])                  */
+#define OP_Permutation    85
+#define OP_Compare        86 /* synopsis: r[P1@P3] <-> r[P2@P3]            */
+#define OP_IsTrue         87 /* synopsis: r[P2] = coalesce(r[P1]==TRUE,P3) ^ P4 */
+#define OP_Offset         88 /* synopsis: r[P3] = sqlite_offset(P1)        */
+#define OP_Column         89 /* synopsis: r[P3]=PX                         */
+#define OP_Affinity       90 /* synopsis: affinity(r[P1@P2])               */
+#define OP_MakeRecord     91 /* synopsis: r[P3]=mkrec(r[P1@P2])            */
+#define OP_Count          92 /* synopsis: r[P2]=count()                    */
+#define OP_ReadCookie     93
+#define OP_SetCookie      94
+#define OP_ReopenIdx      95 /* synopsis: root=P2 iDb=P3                   */
+#define OP_OpenRead       96 /* synopsis: root=P2 iDb=P3                   */
+#define OP_OpenWrite      97 /* synopsis: root=P2 iDb=P3                   */
+#define OP_OpenDup        98
+#define OP_OpenAutoindex  99 /* synopsis: nColumn=P2                       */
+#define OP_OpenEphemeral 100 /* synopsis: nColumn=P2                       */
+#define OP_BitAnd        101 /* same as TK_BITAND, synopsis: r[P3]=r[P1]&r[P2] */
+#define OP_BitOr         102 /* same as TK_BITOR, synopsis: r[P3]=r[P1]|r[P2] */
+#define OP_ShiftLeft     103 /* same as TK_LSHIFT, synopsis: r[P3]=r[P2]<<r[P1] */
+#define OP_ShiftRight    104 /* same as TK_RSHIFT, synopsis: r[P3]=r[P2]>>r[P1] */
+#define OP_Add           105 /* same as TK_PLUS, synopsis: r[P3]=r[P1]+r[P2] */
+#define OP_Subtract      106 /* same as TK_MINUS, synopsis: r[P3]=r[P2]-r[P1] */
+#define OP_Multiply      107 /* same as TK_STAR, synopsis: r[P3]=r[P1]*r[P2] */
+#define OP_Divide        108 /* same as TK_SLASH, synopsis: r[P3]=r[P2]/r[P1] */
+#define OP_Remainder     109 /* same as TK_REM, synopsis: r[P3]=r[P2]%r[P1] */
+#define OP_Concat        110 /* same as TK_CONCAT, synopsis: r[P3]=r[P2]+r[P1] */
+#define OP_SorterOpen    111
+#define OP_BitNot        112 /* same as TK_BITNOT, synopsis: r[P2]= ~r[P1] */
+#define OP_SequenceTest  113 /* synopsis: if( cursor[P1].ctr++ ) pc = P2   */
+#define OP_OpenPseudo    114 /* synopsis: P3 columns in r[P2]              */
+#define OP_String8       115 /* same as TK_STRING, synopsis: r[P2]='P4'    */
+#define OP_Close         116
+#define OP_ColumnsUsed   117
+#define OP_SeekHit       118 /* synopsis: seekHit=P2                       */
+#define OP_Sequence      119 /* synopsis: r[P2]=cursor[P1].ctr++           */
+#define OP_NewRowid      120 /* synopsis: r[P2]=rowid                      */
+#define OP_Insert        121 /* synopsis: intkey=r[P3] data=r[P2]          */
+#define OP_Delete        122
+#define OP_ResetCount    123
+#define OP_SorterCompare 124 /* synopsis: if key(P1)!=trim(r[P3],P4) goto P2 */
+#define OP_SorterData    125 /* synopsis: r[P2]=data                       */
+#define OP_RowData       126 /* synopsis: r[P2]=data                       */
+#define OP_Rowid         127 /* synopsis: r[P2]=rowid                      */
+#define OP_NullRow       128
+#define OP_SeekEnd       129
+#define OP_IdxInsert     130 /* synopsis: key=r[P2]                        */
 #define OP_SorterInsert  131 /* synopsis: key=r[P2]                        */
-#define OP_IdxInsert     132 /* synopsis: key=r[P2]                        */
-#define OP_IdxDelete     133 /* synopsis: key=r[P2@P3]                     */
-#define OP_DeferredSeek  134 /* synopsis: Move P3 to P1.rowid if needed    */
-#define OP_IdxRowid      135 /* synopsis: r[P2]=rowid                      */
+#define OP_IdxDelete     132 /* synopsis: key=r[P2@P3]                     */
+#define OP_DeferredSeek  133 /* synopsis: Move P3 to P1.rowid if needed    */
+#define OP_IdxRowid      134 /* synopsis: r[P2]=rowid                      */
+#define OP_FinishSeek    135
 #define OP_Destroy       136
 #define OP_Clear         137
 #define OP_ResetSorter   138
@@ -15136,9 +15800,9 @@ typedef struct VdbeOpList VdbeOpList;
 #define OP_DropTrigger   145
 #define OP_IntegrityCk   146
 #define OP_RowSetAdd     147 /* synopsis: rowset(P1)=r[P2]                 */
-#define OP_Real          148 /* same as TK_FLOAT, synopsis: r[P2]=P4       */
-#define OP_Param         149
-#define OP_FkCounter     150 /* synopsis: fkctr[P1]+=P2                    */
+#define OP_Param         148
+#define OP_FkCounter     149 /* synopsis: fkctr[P1]+=P2                    */
+#define OP_Real          150 /* same as TK_FLOAT, synopsis: r[P2]=P4       */
 #define OP_MemMax        151 /* synopsis: r[P1]=max(r[P1],r[P2])           */
 #define OP_OffsetLimit   152 /* synopsis: if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1) */
 #define OP_AggInverse    153 /* synopsis: accum=r[P3] inverse(r[P2@P5])    */
@@ -15147,20 +15811,23 @@ typedef struct VdbeOpList VdbeOpList;
 #define OP_AggValue      156 /* synopsis: r[P3]=value N=P2                 */
 #define OP_AggFinal      157 /* synopsis: accum=r[P1] N=P2                 */
 #define OP_Expire        158
-#define OP_TableLock     159 /* synopsis: iDb=P1 root=P2 write=P3          */
-#define OP_VBegin        160
-#define OP_VCreate       161
-#define OP_VDestroy      162
-#define OP_VOpen         163
-#define OP_VColumn       164 /* synopsis: r[P3]=vcolumn(P2)                */
-#define OP_VRename       165
-#define OP_Pagecount     166
-#define OP_MaxPgcnt      167
-#define OP_Trace         168
-#define OP_CursorHint    169
-#define OP_Noop          170
-#define OP_Explain       171
-#define OP_Abortable     172
+#define OP_CursorLock    159
+#define OP_CursorUnlock  160
+#define OP_TableLock     161 /* synopsis: iDb=P1 root=P2 write=P3          */
+#define OP_VBegin        162
+#define OP_VCreate       163
+#define OP_VDestroy      164
+#define OP_VOpen         165
+#define OP_VColumn       166 /* synopsis: r[P3]=vcolumn(P2)                */
+#define OP_VRename       167
+#define OP_Pagecount     168
+#define OP_MaxPgcnt      169
+#define OP_Trace         170
+#define OP_CursorHint    171
+#define OP_ReleaseReg    172 /* synopsis: release r[P1@P2] mask P3         */
+#define OP_Noop          173
+#define OP_Explain       174
+#define OP_Abortable     175
 
 /* Properties such as "out2" or "jump" that are specified in
 ** comments following the "case" for each opcode in the vdbe.c
@@ -15176,25 +15843,26 @@ typedef struct VdbeOpList VdbeOpList;
 /*   0 */ 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x10,\
 /*   8 */ 0x00, 0x01, 0x00, 0x01, 0x01, 0x01, 0x03, 0x03,\
 /*  16 */ 0x01, 0x01, 0x03, 0x12, 0x03, 0x01, 0x09, 0x09,\
-/*  24 */ 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09, 0x09,\
-/*  32 */ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,\
-/*  40 */ 0x01, 0x23, 0x0b, 0x26, 0x26, 0x01, 0x01, 0x03,\
+/*  24 */ 0x09, 0x09, 0x01, 0x09, 0x09, 0x09, 0x09, 0x09,\
+/*  32 */ 0x09, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,\
+/*  40 */ 0x01, 0x01, 0x23, 0x26, 0x26, 0x0b, 0x01, 0x01,\
 /*  48 */ 0x03, 0x03, 0x03, 0x03, 0x0b, 0x0b, 0x0b, 0x0b,\
-/*  56 */ 0x0b, 0x0b, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,\
-/*  64 */ 0x00, 0x00, 0x02, 0x02, 0x08, 0x00, 0x10, 0x10,\
-/*  72 */ 0x10, 0x10, 0x00, 0x10, 0x10, 0x00, 0x00, 0x10,\
-/*  80 */ 0x10, 0x00, 0x00, 0x02, 0x02, 0x02, 0x00, 0x00,\
-/*  88 */ 0x12, 0x20, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00,\
-/*  96 */ 0x00, 0x00, 0x00, 0x26, 0x26, 0x26, 0x26, 0x26,\
-/* 104 */ 0x26, 0x26, 0x26, 0x26, 0x26, 0x00, 0x12, 0x00,\
-/* 112 */ 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
-/* 120 */ 0x10, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
-/* 128 */ 0x10, 0x00, 0x00, 0x04, 0x04, 0x00, 0x00, 0x10,\
+/*  56 */ 0x0b, 0x0b, 0x01, 0x03, 0x01, 0x01, 0x01, 0x00,\
+/*  64 */ 0x00, 0x02, 0x02, 0x08, 0x00, 0x10, 0x10, 0x10,\
+/*  72 */ 0x10, 0x00, 0x10, 0x10, 0x00, 0x00, 0x10, 0x10,\
+/*  80 */ 0x00, 0x00, 0x02, 0x02, 0x02, 0x00, 0x00, 0x12,\
+/*  88 */ 0x20, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00, 0x00,\
+/*  96 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x26, 0x26, 0x26,\
+/* 104 */ 0x26, 0x26, 0x26, 0x26, 0x26, 0x26, 0x26, 0x00,\
+/* 112 */ 0x12, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x10,\
+/* 120 */ 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,\
+/* 128 */ 0x00, 0x00, 0x04, 0x04, 0x00, 0x00, 0x10, 0x00,\
 /* 136 */ 0x10, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00,\
-/* 144 */ 0x00, 0x00, 0x00, 0x06, 0x10, 0x10, 0x00, 0x04,\
+/* 144 */ 0x00, 0x00, 0x00, 0x06, 0x10, 0x00, 0x10, 0x04,\
 /* 152 */ 0x1a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
-/* 160 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x10,\
-/* 168 */ 0x00, 0x00, 0x00, 0x00, 0x00,}
+/* 160 */ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
+/* 168 */ 0x10, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
+}
 
 /* The sqlite3P2Values() routine is able to run faster if it knows
 ** the value of the largest JUMP opcode.  The smaller the maximum
@@ -15202,7 +15870,7 @@ typedef struct VdbeOpList VdbeOpList;
 ** generated this include file strives to group all JUMP opcodes
 ** together near the beginning of the list.
 */
-#define SQLITE_MX_JUMP_OPCODE  61  /* Maximum JUMP opcode */
+#define SQLITE_MX_JUMP_OPCODE  62  /* Maximum JUMP opcode */
 
 /************** End of opcodes.h *********************************************/
 /************** Continuing where we left off in vdbe.h ***********************/
@@ -15218,6 +15886,7 @@ typedef struct VdbeOpList VdbeOpList;
 ** for a description of what each of these routines does.
 */
 SQLITE_PRIVATE Vdbe *sqlite3VdbeCreate(Parse*);
+SQLITE_PRIVATE Parse *sqlite3VdbeParser(Vdbe*);
 SQLITE_PRIVATE int sqlite3VdbeAddOp0(Vdbe*,int);
 SQLITE_PRIVATE int sqlite3VdbeAddOp1(Vdbe*,int,int);
 SQLITE_PRIVATE int sqlite3VdbeAddOp2(Vdbe*,int,int,int);
@@ -15228,6 +15897,7 @@ SQLITE_PRIVATE int sqlite3VdbeAddOp3(Vdbe*,int,int,int,int);
 SQLITE_PRIVATE int sqlite3VdbeAddOp4(Vdbe*,int,int,int,int,const char *zP4,int);
 SQLITE_PRIVATE int sqlite3VdbeAddOp4Dup8(Vdbe*,int,int,int,int,const u8*,int);
 SQLITE_PRIVATE int sqlite3VdbeAddOp4Int(Vdbe*,int,int,int,int,int);
+SQLITE_PRIVATE int sqlite3VdbeAddFunctionCall(Parse*,int,int,int,int,const FuncDef*,int);
 SQLITE_PRIVATE void sqlite3VdbeEndCoroutine(Vdbe*,int);
 #if defined(SQLITE_DEBUG) && !defined(SQLITE_TEST_REALLOC_STRESS)
 SQLITE_PRIVATE   void sqlite3VdbeVerifyNoMallocRequired(Vdbe *p, int N);
@@ -15267,8 +15937,14 @@ SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe*, int addr, int P2);
 SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe*, int addr, int P3);
 SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe*, u16 P5);
 SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe*, int addr);
+SQLITE_PRIVATE void sqlite3VdbeJumpHereOrPopInst(Vdbe*, int addr);
 SQLITE_PRIVATE int sqlite3VdbeChangeToNoop(Vdbe*, int addr);
 SQLITE_PRIVATE int sqlite3VdbeDeletePriorOpcode(Vdbe*, u8 op);
+#ifdef SQLITE_DEBUG
+SQLITE_PRIVATE   void sqlite3VdbeReleaseRegisters(Parse*,int addr, int n, u32 mask, int);
+#else
+# define sqlite3VdbeReleaseRegisters(P,A,N,M,F)
+#endif
 SQLITE_PRIVATE void sqlite3VdbeChangeP4(Vdbe*, int addr, const char *zP4, int N);
 SQLITE_PRIVATE void sqlite3VdbeAppendP4(Vdbe*, void *pP4, int p4type);
 SQLITE_PRIVATE void sqlite3VdbeSetP4KeyInfo(Parse*, Index*);
@@ -15317,11 +15993,13 @@ SQLITE_PRIVATE UnpackedRecord *sqlite3VdbeAllocUnpackedRecord(KeyInfo*);
 typedef int (*RecordCompare)(int,const void*,UnpackedRecord*);
 SQLITE_PRIVATE RecordCompare sqlite3VdbeFindCompare(UnpackedRecord*);
 
-#ifndef SQLITE_OMIT_TRIGGER
 SQLITE_PRIVATE void sqlite3VdbeLinkSubProgram(Vdbe *, SubProgram *);
-#endif
+SQLITE_PRIVATE int sqlite3VdbeHasSubProgram(Vdbe*);
 
 SQLITE_PRIVATE int sqlite3NotPureFunc(sqlite3_context*);
+#ifdef SQLITE_ENABLE_BYTECODE_VTAB
+SQLITE_PRIVATE int sqlite3VdbeBytecodeVtabInit(sqlite3*);
+#endif
 
 /* Use SQLITE_ENABLE_COMMENTS to enable generation of extra comments on
 ** each VDBE opcode.
@@ -15426,257 +16104,6 @@ SQLITE_PRIVATE void sqlite3VdbePrintOp(FILE*, int, VdbeOp*);
 
 /************** End of vdbe.h ************************************************/
 /************** Continuing where we left off in sqliteInt.h ******************/
-/************** Include pager.h in the middle of sqliteInt.h *****************/
-/************** Begin file pager.h *******************************************/
-/*
-** 2001 September 15
-**
-** The author disclaims copyright to this source code.  In place of
-** a legal notice, here is a blessing:
-**
-**    May you do good and not evil.
-**    May you find forgiveness for yourself and forgive others.
-**    May you share freely, never taking more than you give.
-**
-*************************************************************************
-** This header file defines the interface that the sqlite page cache
-** subsystem.  The page cache subsystem reads and writes a file a page
-** at a time and provides a journal for rollback.
-*/
-
-#ifndef SQLITE_PAGER_H
-#define SQLITE_PAGER_H
-
-/*
-** Default maximum size for persistent journal files. A negative
-** value means no limit. This value may be overridden using the
-** sqlite3PagerJournalSizeLimit() API. See also "PRAGMA journal_size_limit".
-*/
-#ifndef SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT
-  #define SQLITE_DEFAULT_JOURNAL_SIZE_LIMIT -1
-#endif
-
-/*
-** The type used to represent a page number.  The first page in a file
-** is called page 1.  0 is used to represent "not a page".
-*/
-typedef u32 Pgno;
-
-/*
-** Each open file is managed by a separate instance of the "Pager" structure.
-*/
-typedef struct Pager Pager;
-
-/*
-** Handle type for pages.
-*/
-typedef struct PgHdr DbPage;
-
-/*
-** Page number PAGER_MJ_PGNO is never used in an SQLite database (it is
-** reserved for working around a windows/posix incompatibility). It is
-** used in the journal to signify that the remainder of the journal file
-** is devoted to storing a master journal name - there are no more pages to
-** roll back. See comments for function writeMasterJournal() in pager.c
-** for details.
-*/
-#define PAGER_MJ_PGNO(x) ((Pgno)((PENDING_BYTE/((x)->pageSize))+1))
-
-/*
-** Allowed values for the flags parameter to sqlite3PagerOpen().
-**
-** NOTE: These values must match the corresponding BTREE_ values in btree.h.
-*/
-#define PAGER_OMIT_JOURNAL  0x0001    /* Do not use a rollback journal */
-#define PAGER_MEMORY        0x0002    /* In-memory database */
-
-/*
-** Valid values for the second argument to sqlite3PagerLockingMode().
-*/
-#define PAGER_LOCKINGMODE_QUERY      -1
-#define PAGER_LOCKINGMODE_NORMAL      0
-#define PAGER_LOCKINGMODE_EXCLUSIVE   1
-
-/*
-** Numeric constants that encode the journalmode.
-**
-** The numeric values encoded here (other than PAGER_JOURNALMODE_QUERY)
-** are exposed in the API via the "PRAGMA journal_mode" command and
-** therefore cannot be changed without a compatibility break.
-*/
-#define PAGER_JOURNALMODE_QUERY     (-1)  /* Query the value of journalmode */
-#define PAGER_JOURNALMODE_DELETE      0   /* Commit by deleting journal file */
-#define PAGER_JOURNALMODE_PERSIST     1   /* Commit by zeroing journal header */
-#define PAGER_JOURNALMODE_OFF         2   /* Journal omitted.  */
-#define PAGER_JOURNALMODE_TRUNCATE    3   /* Commit by truncating journal */
-#define PAGER_JOURNALMODE_MEMORY      4   /* In-memory journal file */
-#define PAGER_JOURNALMODE_WAL         5   /* Use write-ahead logging */
-
-/*
-** Flags that make up the mask passed to sqlite3PagerGet().
-*/
-#define PAGER_GET_NOCONTENT     0x01  /* Do not load data from disk */
-#define PAGER_GET_READONLY      0x02  /* Read-only page is acceptable */
-
-/*
-** Flags for sqlite3PagerSetFlags()
-**
-** Value constraints (enforced via assert()):
-**    PAGER_FULLFSYNC      == SQLITE_FullFSync
-**    PAGER_CKPT_FULLFSYNC == SQLITE_CkptFullFSync
-**    PAGER_CACHE_SPILL    == SQLITE_CacheSpill
-*/
-#define PAGER_SYNCHRONOUS_OFF       0x01  /* PRAGMA synchronous=OFF */
-#define PAGER_SYNCHRONOUS_NORMAL    0x02  /* PRAGMA synchronous=NORMAL */
-#define PAGER_SYNCHRONOUS_FULL      0x03  /* PRAGMA synchronous=FULL */
-#define PAGER_SYNCHRONOUS_EXTRA     0x04  /* PRAGMA synchronous=EXTRA */
-#define PAGER_SYNCHRONOUS_MASK      0x07  /* Mask for four values above */
-#define PAGER_FULLFSYNC             0x08  /* PRAGMA fullfsync=ON */
-#define PAGER_CKPT_FULLFSYNC        0x10  /* PRAGMA checkpoint_fullfsync=ON */
-#define PAGER_CACHESPILL            0x20  /* PRAGMA cache_spill=ON */
-#define PAGER_FLAGS_MASK            0x38  /* All above except SYNCHRONOUS */
-
-/*
-** The remainder of this file contains the declarations of the functions
-** that make up the Pager sub-system API. See source code comments for
-** a detailed description of each routine.
-*/
-
-/* Open and close a Pager connection. */
-SQLITE_PRIVATE int sqlite3PagerOpen(
-  sqlite3_vfs*,
-  Pager **ppPager,
-  const char*,
-  int,
-  int,
-  int,
-  void(*)(DbPage*)
-);
-SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager, sqlite3*);
-SQLITE_PRIVATE int sqlite3PagerReadFileheader(Pager*, int, unsigned char*);
-
-/* Functions used to configure a Pager object. */
-SQLITE_PRIVATE void sqlite3PagerSetBusyHandler(Pager*, int(*)(void *), void *);
-SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager*, u32*, int);
-#ifdef SQLITE_HAS_CODEC
-SQLITE_PRIVATE void sqlite3PagerAlignReserve(Pager*,Pager*);
-#endif
-SQLITE_PRIVATE int sqlite3PagerMaxPageCount(Pager*, int);
-SQLITE_PRIVATE void sqlite3PagerSetCachesize(Pager*, int);
-SQLITE_PRIVATE int sqlite3PagerSetSpillsize(Pager*, int);
-SQLITE_PRIVATE void sqlite3PagerSetMmapLimit(Pager *, sqlite3_int64);
-SQLITE_PRIVATE void sqlite3PagerShrink(Pager*);
-SQLITE_PRIVATE void sqlite3PagerSetFlags(Pager*,unsigned);
-SQLITE_PRIVATE int sqlite3PagerLockingMode(Pager *, int);
-SQLITE_PRIVATE int sqlite3PagerSetJournalMode(Pager *, int);
-SQLITE_PRIVATE int sqlite3PagerGetJournalMode(Pager*);
-SQLITE_PRIVATE int sqlite3PagerOkToChangeJournalMode(Pager*);
-SQLITE_PRIVATE i64 sqlite3PagerJournalSizeLimit(Pager *, i64);
-SQLITE_PRIVATE sqlite3_backup **sqlite3PagerBackupPtr(Pager*);
-SQLITE_PRIVATE int sqlite3PagerFlush(Pager*);
-
-/* Functions used to obtain and release page references. */
-SQLITE_PRIVATE int sqlite3PagerGet(Pager *pPager, Pgno pgno, DbPage **ppPage, int clrFlag);
-SQLITE_PRIVATE DbPage *sqlite3PagerLookup(Pager *pPager, Pgno pgno);
-SQLITE_PRIVATE void sqlite3PagerRef(DbPage*);
-SQLITE_PRIVATE void sqlite3PagerUnref(DbPage*);
-SQLITE_PRIVATE void sqlite3PagerUnrefNotNull(DbPage*);
-SQLITE_PRIVATE void sqlite3PagerUnrefPageOne(DbPage*);
-
-/* Operations on page references. */
-SQLITE_PRIVATE int sqlite3PagerWrite(DbPage*);
-SQLITE_PRIVATE void sqlite3PagerDontWrite(DbPage*);
-SQLITE_PRIVATE int sqlite3PagerMovepage(Pager*,DbPage*,Pgno,int);
-SQLITE_PRIVATE int sqlite3PagerPageRefcount(DbPage*);
-SQLITE_PRIVATE void *sqlite3PagerGetData(DbPage *);
-SQLITE_PRIVATE void *sqlite3PagerGetExtra(DbPage *);
-
-/* Functions used to manage pager transactions and savepoints. */
-SQLITE_PRIVATE void sqlite3PagerPagecount(Pager*, int*);
-SQLITE_PRIVATE int sqlite3PagerBegin(Pager*, int exFlag, int);
-SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(Pager*,const char *zMaster, int);
-SQLITE_PRIVATE int sqlite3PagerExclusiveLock(Pager*);
-SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager, const char *zMaster);
-SQLITE_PRIVATE int sqlite3PagerCommitPhaseTwo(Pager*);
-SQLITE_PRIVATE int sqlite3PagerRollback(Pager*);
-SQLITE_PRIVATE int sqlite3PagerOpenSavepoint(Pager *pPager, int n);
-SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint);
-SQLITE_PRIVATE int sqlite3PagerSharedLock(Pager *pPager);
-
-#ifndef SQLITE_OMIT_WAL
-SQLITE_PRIVATE   int sqlite3PagerCheckpoint(Pager *pPager, sqlite3*, int, int*, int*);
-SQLITE_PRIVATE   int sqlite3PagerWalSupported(Pager *pPager);
-SQLITE_PRIVATE   int sqlite3PagerWalCallback(Pager *pPager);
-SQLITE_PRIVATE   int sqlite3PagerOpenWal(Pager *pPager, int *pisOpen);
-SQLITE_PRIVATE   int sqlite3PagerCloseWal(Pager *pPager, sqlite3*);
-# ifdef SQLITE_ENABLE_SNAPSHOT
-SQLITE_PRIVATE   int sqlite3PagerSnapshotGet(Pager *pPager, sqlite3_snapshot **ppSnapshot);
-SQLITE_PRIVATE   int sqlite3PagerSnapshotOpen(Pager *pPager, sqlite3_snapshot *pSnapshot);
-SQLITE_PRIVATE   int sqlite3PagerSnapshotRecover(Pager *pPager);
-SQLITE_PRIVATE   int sqlite3PagerSnapshotCheck(Pager *pPager, sqlite3_snapshot *pSnapshot);
-SQLITE_PRIVATE   void sqlite3PagerSnapshotUnlock(Pager *pPager);
-# endif
-#endif
-
-#ifdef SQLITE_DIRECT_OVERFLOW_READ
-SQLITE_PRIVATE   int sqlite3PagerDirectReadOk(Pager *pPager, Pgno pgno);
-#endif
-
-#ifdef SQLITE_ENABLE_ZIPVFS
-SQLITE_PRIVATE   int sqlite3PagerWalFramesize(Pager *pPager);
-#endif
-
-/* Functions used to query pager state and configuration. */
-SQLITE_PRIVATE u8 sqlite3PagerIsreadonly(Pager*);
-SQLITE_PRIVATE u32 sqlite3PagerDataVersion(Pager*);
-#ifdef SQLITE_DEBUG
-SQLITE_PRIVATE   int sqlite3PagerRefcount(Pager*);
-#endif
-SQLITE_PRIVATE int sqlite3PagerMemUsed(Pager*);
-SQLITE_PRIVATE const char *sqlite3PagerFilename(Pager*, int);
-SQLITE_PRIVATE sqlite3_vfs *sqlite3PagerVfs(Pager*);
-SQLITE_PRIVATE sqlite3_file *sqlite3PagerFile(Pager*);
-SQLITE_PRIVATE sqlite3_file *sqlite3PagerJrnlFile(Pager*);
-SQLITE_PRIVATE const char *sqlite3PagerJournalname(Pager*);
-SQLITE_PRIVATE void *sqlite3PagerTempSpace(Pager*);
-SQLITE_PRIVATE int sqlite3PagerIsMemdb(Pager*);
-SQLITE_PRIVATE void sqlite3PagerCacheStat(Pager *, int, int, int *);
-SQLITE_PRIVATE void sqlite3PagerClearCache(Pager*);
-SQLITE_PRIVATE int sqlite3SectorSize(sqlite3_file *);
-#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
-SQLITE_PRIVATE void sqlite3PagerResetLockTimeout(Pager *pPager);
-#else
-# define sqlite3PagerResetLockTimeout(X)
-#endif
-
-/* Functions used to truncate the database file. */
-SQLITE_PRIVATE void sqlite3PagerTruncateImage(Pager*,Pgno);
-
-SQLITE_PRIVATE void sqlite3PagerRekey(DbPage*, Pgno, u16);
-
-#if defined(SQLITE_HAS_CODEC) && !defined(SQLITE_OMIT_WAL)
-SQLITE_PRIVATE void *sqlite3PagerCodec(DbPage *);
-#endif
-
-/* Functions to support testing and debugging. */
-#if !defined(NDEBUG) || defined(SQLITE_TEST)
-SQLITE_PRIVATE   Pgno sqlite3PagerPagenumber(DbPage*);
-SQLITE_PRIVATE   int sqlite3PagerIswriteable(DbPage*);
-#endif
-#ifdef SQLITE_TEST
-SQLITE_PRIVATE   int *sqlite3PagerStats(Pager*);
-SQLITE_PRIVATE   void sqlite3PagerRefdump(Pager*);
-  void disable_simulated_io_errors(void);
-  void enable_simulated_io_errors(void);
-#else
-# define disable_simulated_io_errors()
-# define enable_simulated_io_errors()
-#endif
-
-#endif /* SQLITE_PAGER_H */
-
-/************** End of pager.h ***********************************************/
-/************** Continuing where we left off in sqliteInt.h ******************/
 /************** Include pcache.h in the middle of sqliteInt.h ****************/
 /************** Begin file pcache.h ******************************************/
 /*
@@ -16325,7 +16752,6 @@ struct Schema {
 */
 #define DB_SchemaLoaded    0x0001  /* The schema has been loaded */
 #define DB_UnresetViews    0x0002  /* Some views have defined column names */
-#define DB_Empty           0x0004  /* The file is empty (length 0 bytes) */
 #define DB_ResetWanted     0x0008  /* Reset the schema when nSchemaLock==0 */
 
 /*
@@ -16353,15 +16779,47 @@ struct Schema {
 ** is shared by multiple database connections.  Therefore, while parsing
 ** schema information, the Lookaside.bEnabled flag is cleared so that
 ** lookaside allocations are not used to construct the schema objects.
+**
+** New lookaside allocations are only allowed if bDisable==0.  When
+** bDisable is greater than zero, sz is set to zero which effectively
+** disables lookaside without adding a new test for the bDisable flag
+** in a performance-critical path.  sz should be set by to szTrue whenever
+** bDisable changes back to zero.
+**
+** Lookaside buffers are initially held on the pInit list.  As they are
+** used and freed, they are added back to the pFree list.  New allocations
+** come off of pFree first, then pInit as a fallback.  This dual-list
+** allows use to compute a high-water mark - the maximum number of allocations
+** outstanding at any point in the past - by subtracting the number of
+** allocations on the pInit list from the total number of allocations.
+**
+** Enhancement on 2019-12-12:  Two-size-lookaside
+** The default lookaside configuration is 100 slots of 1200 bytes each.
+** The larger slot sizes are important for performance, but they waste
+** a lot of space, as most lookaside allocations are less than 128 bytes.
+** The two-size-lookaside enhancement breaks up the lookaside allocation
+** into two pools:  One of 128-byte slots and the other of the default size
+** (1200-byte) slots.   Allocations are filled from the small-pool first,
+** failing over to the full-size pool if that does not work.  Thus more
+** lookaside slots are available while also using less memory.
+** This enhancement can be omitted by compiling with
+** SQLITE_OMIT_TWOSIZE_LOOKASIDE.
 */
 struct Lookaside {
   u32 bDisable;           /* Only operate the lookaside when zero */
   u16 sz;                 /* Size of each buffer in bytes */
+  u16 szTrue;             /* True value of sz, even if disabled */
   u8 bMalloced;           /* True if pStart obtained from sqlite3_malloc() */
   u32 nSlot;              /* Number of lookaside slots allocated */
   u32 anStat[3];          /* 0: hits.  1: size misses.  2: full misses */
   LookasideSlot *pInit;   /* List of buffers not previously used */
   LookasideSlot *pFree;   /* List of available buffers */
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+  LookasideSlot *pSmallInit; /* List of small buffers not prediously used */
+  LookasideSlot *pSmallFree; /* List of available small buffers */
+  void *pMiddle;          /* First byte past end of full-size buffers and
+                          ** the first byte of LOOKASIDE_SMALL buffers */
+#endif /* SQLITE_OMIT_TWOSIZE_LOOKASIDE */
   void *pStart;           /* First byte of available memory space */
   void *pEnd;             /* First byte past end of available space */
 };
@@ -16369,6 +16827,17 @@ struct LookasideSlot {
   LookasideSlot *pNext;    /* Next buffer in the list of free buffers */
 };
 
+#define DisableLookaside  db->lookaside.bDisable++;db->lookaside.sz=0
+#define EnableLookaside   db->lookaside.bDisable--;\
+   db->lookaside.sz=db->lookaside.bDisable?0:db->lookaside.szTrue
+
+/* Size of the smaller allocations in two-size lookside */
+#ifdef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+#  define LOOKASIDE_SMALL           0
+#else
+#  define LOOKASIDE_SMALL         128
+#endif
+
 /*
 ** A hash table for built-in function definitions.  (Application-defined
 ** functions use a regular table table from hash.h.)
@@ -16440,7 +16909,7 @@ SQLITE_PRIVATE void sqlite3CryptFunc(sqlite3_context*,int,sqlite3_value**);
 struct sqlite3 {
   sqlite3_vfs *pVfs;            /* OS Interface */
   struct Vdbe *pVdbe;           /* List of active virtual machines */
-  CollSeq *pDfltColl;           /* The default collating sequence (BINARY) */
+  CollSeq *pDfltColl;           /* BINARY collseq for the database encoding */
   sqlite3_mutex *mutex;         /* Connection mutex */
   Db *aDb;                      /* All backends */
   int nDb;                      /* Number of backends currently in use */
@@ -16474,7 +16943,7 @@ struct sqlite3 {
   int aLimit[SQLITE_N_LIMIT];   /* Limits */
   int nMaxSorterMmap;           /* Maximum size of regions mapped by sorter */
   struct sqlite3InitInfo {      /* Information used during initialization */
-    int newTnum;                /* Rootpage of table being initialized */
+    Pgno newTnum;               /* Rootpage of table being initialized */
     u8 iDb;                     /* Which db file is being initialized */
     u8 busy;                    /* TRUE if currently initializing */
     unsigned orphanTrigger : 1; /* Last statement is orphaned TEMP trigger */
@@ -16489,7 +16958,10 @@ struct sqlite3 {
   int nVDestroy;                /* Number of active OP_VDestroy operations */
   int nExtension;               /* Number of loaded extensions */
   void **aExtension;            /* Array of shared library handles */
-  int (*xTrace)(u32,void*,void*,void*);     /* Trace function */
+  union {
+    void (*xLegacy)(void*,const char*);     /* Legacy trace function */
+    int (*xV2)(u32,void*,void*,void*);      /* V2 Trace function */
+  } trace;
   void *pTraceArg;                          /* Argument to the trace function */
 #ifndef SQLITE_OMIT_DEPRECATED
   void (*xProfile)(void*,const char*,u64);  /* Profiling function */
@@ -16543,6 +17015,7 @@ struct sqlite3 {
   BusyHandler busyHandler;      /* Busy callback */
   Db aDbStatic[2];              /* Static space for the 2 default backends */
   Savepoint *pSavepoint;        /* List of active savepoints */
+  int nAnalysisLimit;           /* Number of index rows to ANALYZE */
   int busyTimeout;              /* Busy handler timeout, in msec */
   int nSavepoint;               /* Number of non-transaction savepoints */
   int nStatement;               /* Number of nested statement-transactions  */
@@ -16550,7 +17023,7 @@ struct sqlite3 {
   i64 nDeferredImmCons;         /* Net deferred immediate constraints */
   int *pnBytesFreed;            /* If not NULL, increment this in DbFree() */
 #ifdef SQLITE_ENABLE_UNLOCK_NOTIFY
-  /* The following variables are all protected by the STATIC_MASTER
+  /* The following variables are all protected by the STATIC_MAIN
   ** mutex, not by sqlite3.mutex. They are used by code in notify.c.
   **
   ** When X.pUnlockConnection==Y, that means that X is waiting for Y to
@@ -16578,6 +17051,13 @@ struct sqlite3 {
 #define ENC(db)        ((db)->enc)
 
 /*
+** A u64 constant where the lower 32 bits are all zeros.  Only the
+** upper 32 bits are included in the argument.  Necessary because some
+** C-compilers still do not accept LL integer literals.
+*/
+#define HI(X)  ((u64)(X)<<32)
+
+/*
 ** Possible values for the sqlite3.flags.
 **
 ** Value constraints (enforced via assert()):
@@ -16585,16 +17065,15 @@ struct sqlite3 {
 **      SQLITE_CkptFullFSync == PAGER_CKPT_FULLFSYNC
 **      SQLITE_CacheSpill    == PAGER_CACHE_SPILL
 */
-#define SQLITE_WriteSchema    0x00000001  /* OK to update SQLITE_MASTER */
+#define SQLITE_WriteSchema    0x00000001  /* OK to update SQLITE_SCHEMA */
 #define SQLITE_LegacyFileFmt  0x00000002  /* Create new databases in format 1 */
 #define SQLITE_FullColNames   0x00000004  /* Show full column names on SELECT */
 #define SQLITE_FullFSync      0x00000008  /* Use full fsync on the backend */
 #define SQLITE_CkptFullFSync  0x00000010  /* Use full fsync for checkpoint */
 #define SQLITE_CacheSpill     0x00000020  /* OK to spill pager cache */
 #define SQLITE_ShortColNames  0x00000040  /* Show short columns names */
-#define SQLITE_CountRows      0x00000080  /* Count rows changed by INSERT, */
-                                          /*   DELETE, or UPDATE and return */
-                                          /*   the count using a callback. */
+#define SQLITE_TrustedSchema  0x00000080  /* Allow unsafe functions and
+                                          ** vtabs in the schema definition */
 #define SQLITE_NullCallback   0x00000100  /* Invoke the callback once if the */
                                           /*   result set is empty */
 #define SQLITE_IgnoreChecks   0x00000200  /* Do not enforce check constraints */
@@ -16620,9 +17099,11 @@ struct sqlite3 {
 #define SQLITE_DqsDDL         0x20000000  /* dbl-quoted strings allowed in DDL*/
 #define SQLITE_DqsDML         0x40000000  /* dbl-quoted strings allowed in DML*/
 #define SQLITE_EnableView     0x80000000  /* Enable the use of views */
+#define SQLITE_CountRows      HI(0x00001) /* Count rows changed by INSERT, */
+                                          /*   DELETE, or UPDATE and return */
+                                          /*   the count using a callback. */
 
 /* Flags used only if debugging */
-#define HI(X)  ((u64)(X)<<32)
 #ifdef SQLITE_DEBUG
 #define SQLITE_SqlTrace       HI(0x0100000) /* Debug print SQL as it executes */
 #define SQLITE_VdbeListing    HI(0x0200000) /* Debug listings of VDBE progs */
@@ -16640,6 +17121,8 @@ struct sqlite3 {
 #define DBFLAG_Vacuum         0x0004  /* Currently in a VACUUM */
 #define DBFLAG_VacuumInto     0x0008  /* Currently running VACUUM INTO */
 #define DBFLAG_SchemaKnownOk  0x0010  /* Schema is known to be valid */
+#define DBFLAG_InternalFunc   0x0020  /* Allow use of internal functions */
+#define DBFLAG_EncodingFixed  0x0040  /* No longer possible to change enc. */
 
 /*
 ** Bits of the sqlite3.dbOptFlags field that are used by the
@@ -16747,6 +17230,7 @@ struct FuncDestructor {
 **     SQLITE_FUNC_TYPEOF    ==  OPFLAG_TYPEOFARG
 **     SQLITE_FUNC_CONSTANT  ==  SQLITE_DETERMINISTIC from the API
 **     SQLITE_FUNC_DIRECT    ==  SQLITE_DIRECTONLY from the API
+**     SQLITE_FUNC_UNSAFE    ==  SQLITE_INNOCUOUS
 **     SQLITE_FUNC_ENCMASK   depends on SQLITE_UTF* macros in the API
 */
 #define SQLITE_FUNC_ENCMASK  0x0003 /* SQLITE_UTF8, SQLITE_UTF16BE or UTF16LE */
@@ -16757,18 +17241,29 @@ struct FuncDestructor {
 #define SQLITE_FUNC_LENGTH   0x0040 /* Built-in length() function */
 #define SQLITE_FUNC_TYPEOF   0x0080 /* Built-in typeof() function */
 #define SQLITE_FUNC_COUNT    0x0100 /* Built-in count(*) aggregate */
-#define SQLITE_FUNC_COALESCE 0x0200 /* Built-in coalesce() or ifnull() */
+/*                           0x0200 -- available for reuse */
 #define SQLITE_FUNC_UNLIKELY 0x0400 /* Built-in unlikely() function */
 #define SQLITE_FUNC_CONSTANT 0x0800 /* Constant inputs give a constant output */
 #define SQLITE_FUNC_MINMAX   0x1000 /* True for min() and max() aggregates */
 #define SQLITE_FUNC_SLOCHNG  0x2000 /* "Slow Change". Value constant during a
                                     ** single query - might change over time */
-#define SQLITE_FUNC_AFFINITY 0x4000 /* Built-in affinity() function */
+#define SQLITE_FUNC_TEST     0x4000 /* Built-in testing functions */
 #define SQLITE_FUNC_OFFSET   0x8000 /* Built-in sqlite_offset() function */
 #define SQLITE_FUNC_WINDOW   0x00010000 /* Built-in window-only function */
 #define SQLITE_FUNC_INTERNAL 0x00040000 /* For use by NestedParse() only */
 #define SQLITE_FUNC_DIRECT   0x00080000 /* Not for use in TRIGGERs or VIEWs */
 #define SQLITE_FUNC_SUBTYPE  0x00100000 /* Result likely to have sub-type */
+#define SQLITE_FUNC_UNSAFE   0x00200000 /* Function has side effects */
+#define SQLITE_FUNC_INLINE   0x00400000 /* Functions implemented in-line */
+
+/* Identifier numbers for each in-line function */
+#define INLINEFUNC_coalesce             0
+#define INLINEFUNC_implies_nonnull_row  1
+#define INLINEFUNC_expr_implies_expr    2
+#define INLINEFUNC_expr_compare         3
+#define INLINEFUNC_affinity             4
+#define INLINEFUNC_iif                  5
+#define INLINEFUNC_unlikely            99  /* Default case */
 
 /*
 ** The following three macros, FUNCTION(), LIKEFUNC() and AGGREGATE() are
@@ -16784,6 +17279,22 @@ struct FuncDestructor {
 **   VFUNCTION(zName, nArg, iArg, bNC, xFunc)
 **     Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag.
 **
+**   SFUNCTION(zName, nArg, iArg, bNC, xFunc)
+**     Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag and
+**     adds the SQLITE_DIRECTONLY flag.
+**
+**   INLINE_FUNC(zName, nArg, iFuncId, mFlags)
+**     zName is the name of a function that is implemented by in-line
+**     byte code rather than by the usual callbacks. The iFuncId
+**     parameter determines the function id.  The mFlags parameter is
+**     optional SQLITE_FUNC_ flags for this function.
+**
+**   TEST_FUNC(zName, nArg, iFuncId, mFlags)
+**     zName is the name of a test-only function implemented by in-line
+**     byte code rather than by the usual callbacks. The iFuncId
+**     parameter determines the function id.  The mFlags parameter is
+**     optional SQLITE_FUNC_ flags for this function.
+**
 **   DFUNCTION(zName, nArg, iArg, bNC, xFunc)
 **     Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag and
 **     adds the SQLITE_FUNC_SLOCHNG flag.  Used for date & time functions
@@ -16823,6 +17334,16 @@ struct FuncDestructor {
 #define VFUNCTION(zName, nArg, iArg, bNC, xFunc) \
   {nArg, SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \
    SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, 0, #zName, {0} }
+#define SFUNCTION(zName, nArg, iArg, bNC, xFunc) \
+  {nArg, SQLITE_UTF8|SQLITE_DIRECTONLY|SQLITE_FUNC_UNSAFE, \
+   SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, 0, #zName, {0} }
+#define INLINE_FUNC(zName, nArg, iArg, mFlags) \
+  {nArg, SQLITE_UTF8|SQLITE_FUNC_INLINE|SQLITE_FUNC_CONSTANT|(mFlags), \
+   SQLITE_INT_TO_PTR(iArg), 0, noopFunc, 0, 0, 0, #zName, {0} }
+#define TEST_FUNC(zName, nArg, iArg, mFlags) \
+  {nArg, SQLITE_UTF8|SQLITE_FUNC_INTERNAL|SQLITE_FUNC_TEST| \
+         SQLITE_FUNC_INLINE|SQLITE_FUNC_CONSTANT|(mFlags), \
+   SQLITE_INT_TO_PTR(iArg), 0, noopFunc, 0, 0, 0, #zName, {0} }
 #define DFUNCTION(zName, nArg, iArg, bNC, xFunc) \
   {nArg, SQLITE_FUNC_SLOCHNG|SQLITE_UTF8, \
    0, 0, xFunc, 0, 0, 0, #zName, {0} }
@@ -16838,12 +17359,6 @@ struct FuncDestructor {
 #define LIKEFUNC(zName, nArg, arg, flags) \
   {nArg, SQLITE_FUNC_CONSTANT|SQLITE_UTF8|flags, \
    (void *)arg, 0, likeFunc, 0, 0, 0, #zName, {0} }
-#define AGGREGATE(zName, nArg, arg, nc, xStep, xFinal, xValue) \
-  {nArg, SQLITE_UTF8|(nc*SQLITE_FUNC_NEEDCOLL), \
-   SQLITE_INT_TO_PTR(arg), 0, xStep,xFinal,xValue,0,#zName, {0}}
-#define AGGREGATE2(zName, nArg, arg, nc, xStep, xFinal, extraFlags) \
-  {nArg, SQLITE_UTF8|(nc*SQLITE_FUNC_NEEDCOLL)|extraFlags, \
-   SQLITE_INT_TO_PTR(arg), 0, xStep,xFinal,xFinal,0,#zName, {0}}
 #define WAGGREGATE(zName, nArg, arg, nc, xStep, xFinal, xValue, xInverse, f) \
   {nArg, SQLITE_UTF8|(nc*SQLITE_FUNC_NEEDCOLL)|f, \
    SQLITE_INT_TO_PTR(arg), 0, xStep,xFinal,xValue,xInverse,#zName, {0}}
@@ -16889,26 +17404,46 @@ struct Module {
 };
 
 /*
-** information about each column of an SQL table is held in an instance
-** of this structure.
+** Information about each column of an SQL table is held in an instance
+** of the Column structure, in the Table.aCol[] array.
+**
+** Definitions:
+**
+**   "table column index"     This is the index of the column in the
+**                            Table.aCol[] array, and also the index of
+**                            the column in the original CREATE TABLE stmt.
+**
+**   "storage column index"   This is the index of the column in the
+**                            record BLOB generated by the OP_MakeRecord
+**                            opcode.  The storage column index is less than
+**                            or equal to the table column index.  It is
+**                            equal if and only if there are no VIRTUAL
+**                            columns to the left.
 */
 struct Column {
   char *zName;     /* Name of this column, \000, then the type */
-  Expr *pDflt;     /* Default value of this column */
+  Expr *pDflt;     /* Default value or GENERATED ALWAYS AS value */
   char *zColl;     /* Collating sequence.  If NULL, use the default */
   u8 notNull;      /* An OE_ code for handling a NOT NULL constraint */
   char affinity;   /* One of the SQLITE_AFF_... values */
   u8 szEst;        /* Estimated size of value in this column. sizeof(INT)==1 */
-  u8 colFlags;     /* Boolean properties.  See COLFLAG_ defines below */
+  u8 hName;        /* Column name hash for faster lookup */
+  u16 colFlags;    /* Boolean properties.  See COLFLAG_ defines below */
 };
 
 /* Allowed values for Column.colFlags:
 */
-#define COLFLAG_PRIMKEY  0x0001    /* Column is part of the primary key */
-#define COLFLAG_HIDDEN   0x0002    /* A hidden column in a virtual table */
-#define COLFLAG_HASTYPE  0x0004    /* Type name follows column name */
-#define COLFLAG_UNIQUE   0x0008    /* Column def contains "UNIQUE" or "PK" */
+#define COLFLAG_PRIMKEY   0x0001   /* Column is part of the primary key */
+#define COLFLAG_HIDDEN    0x0002   /* A hidden column in a virtual table */
+#define COLFLAG_HASTYPE   0x0004   /* Type name follows column name */
+#define COLFLAG_UNIQUE    0x0008   /* Column def contains "UNIQUE" or "PK" */
 #define COLFLAG_SORTERREF 0x0010   /* Use sorter-refs with this column */
+#define COLFLAG_VIRTUAL   0x0020   /* GENERATED ALWAYS AS ... VIRTUAL */
+#define COLFLAG_STORED    0x0040   /* GENERATED ALWAYS AS ... STORED */
+#define COLFLAG_NOTAVAIL  0x0080   /* STORED column not yet calculated */
+#define COLFLAG_BUSY      0x0100   /* Blocks recursion on GENERATED columns */
+#define COLFLAG_GENERATED 0x0060   /* Combo: _STORED, _VIRTUAL */
+#define COLFLAG_NOINSERT  0x0062   /* Combo: _HIDDEN, _STORED, _VIRTUAL */
 
 /*
 ** A "Collating Sequence" is defined by an instance of the following
@@ -17026,10 +17561,17 @@ struct VTable {
   sqlite3_vtab *pVtab;      /* Pointer to vtab instance */
   int nRef;                 /* Number of pointers to this structure */
   u8 bConstraint;           /* True if constraints are supported */
+  u8 eVtabRisk;             /* Riskiness of allowing hacker access */
   int iSavepoint;           /* Depth of the SAVEPOINT stack */
   VTable *pNext;            /* Next in linked list (see above) */
 };
 
+/* Allowed values for VTable.eVtabRisk
+*/
+#define SQLITE_VTABRISK_Low          0
+#define SQLITE_VTABRISK_Normal       1
+#define SQLITE_VTABRISK_High         2
+
 /*
 ** The schema for each SQL table and view is represented in memory
 ** by an instance of the following structure.
@@ -17043,11 +17585,12 @@ struct Table {
   char *zColAff;       /* String defining the affinity of each column */
   ExprList *pCheck;    /* All CHECK constraints */
                        /*   ... also used as column name list in a VIEW */
-  int tnum;            /* Root BTree page for this table */
+  Pgno tnum;           /* Root BTree page for this table */
   u32 nTabRef;         /* Number of pointers to this Table */
   u32 tabFlags;        /* Mask of TF_* values */
   i16 iPKey;           /* If not negative, use aCol[iPKey] as the rowid */
   i16 nCol;            /* Number of columns in this table */
+  i16 nNVCol;          /* Number of columns that are not VIRTUAL */
   LogEst nRowLogEst;   /* Estimated rows in table - from sqlite_stat1 table */
   LogEst szTabRow;     /* Estimated size of each table row in bytes */
 #ifdef SQLITE_ENABLE_COSTMULT
@@ -17074,20 +17617,28 @@ struct Table {
 ** followed by non-hidden columns.  Example:  "CREATE VIRTUAL TABLE x USING
 ** vtab1(a HIDDEN, b);".  Since "b" is a non-hidden column but "a" is hidden,
 ** the TF_OOOHidden attribute would apply in this case.  Such tables require
-** special handling during INSERT processing.
+** special handling during INSERT processing. The "OOO" means "Out Of Order".
+**
+** Constraints:
+**
+**         TF_HasVirtual == COLFLAG_Virtual
+**         TF_HasStored  == COLFLAG_Stored
 */
 #define TF_Readonly        0x0001    /* Read-only system table */
 #define TF_Ephemeral       0x0002    /* An ephemeral table */
 #define TF_HasPrimaryKey   0x0004    /* Table has a primary key */
 #define TF_Autoincrement   0x0008    /* Integer primary key is autoincrement */
 #define TF_HasStat1        0x0010    /* nRowLogEst set from sqlite_stat1 */
-#define TF_WithoutRowid    0x0020    /* No rowid.  PRIMARY KEY is the key */
-#define TF_NoVisibleRowid  0x0040    /* No user-visible "rowid" column */
-#define TF_OOOHidden       0x0080    /* Out-of-Order hidden columns */
+#define TF_HasVirtual      0x0020    /* Has one or more VIRTUAL columns */
+#define TF_HasStored       0x0040    /* Has one or more STORED columns */
+#define TF_HasGenerated    0x0060    /* Combo: HasVirtual + HasStored */
+#define TF_WithoutRowid    0x0080    /* No rowid.  PRIMARY KEY is the key */
 #define TF_StatsUsed       0x0100    /* Query planner decisions affected by
                                      ** Index.aiRowLogEst[] values */
-#define TF_HasNotNull      0x0200    /* Contains NOT NULL constraints */
-#define TF_Shadow          0x0400    /* True for a shadow table */
+#define TF_NoVisibleRowid  0x0200    /* No user-visible "rowid" column */
+#define TF_OOOHidden       0x0400    /* Out-of-Order hidden columns */
+#define TF_HasNotNull      0x0800    /* Contains NOT NULL constraints */
+#define TF_Shadow          0x1000    /* True for a shadow table */
 
 /*
 ** Test to see whether or not a table is a virtual table.  This is
@@ -17096,8 +17647,11 @@ struct Table {
 */
 #ifndef SQLITE_OMIT_VIRTUALTABLE
 #  define IsVirtual(X)      ((X)->nModuleArg)
+#  define ExprIsVtab(X)  \
+              ((X)->op==TK_COLUMN && (X)->y.pTab!=0 && (X)->y.pTab->nModuleArg)
 #else
 #  define IsVirtual(X)      0
+#  define ExprIsVtab(X)     0
 #endif
 
 /*
@@ -17305,7 +17859,7 @@ struct UnpackedRecord {
 ** element.
 **
 ** While parsing a CREATE TABLE or CREATE INDEX statement in order to
-** generate VDBE code (as opposed to parsing one read from an sqlite_master
+** generate VDBE code (as opposed to parsing one read from an sqlite_schema
 ** table as part of parsing an existing database schema), transient instances
 ** of this structure may be created. In this case the Index.tnum variable is
 ** used to store the address of a VDBE instruction, not a database page
@@ -17324,7 +17878,7 @@ struct Index {
   const char **azColl;     /* Array of collation sequence names for index */
   Expr *pPartIdxWhere;     /* WHERE clause for partial indices */
   ExprList *aColExpr;      /* Column expressions */
-  int tnum;                /* DB Page containing root of this index */
+  Pgno tnum;               /* DB Page containing root of this index */
   LogEst szIdxRow;         /* Estimated average row size in bytes */
   u16 nKeyCol;             /* Number of columns forming the key */
   u16 nColumn;             /* Number of columns stored in the index */
@@ -17338,6 +17892,7 @@ struct Index {
   unsigned hasStat1:1;     /* aiRowLogEst values come from sqlite_stat1 */
   unsigned bNoQuery:1;     /* Do not use this index to optimize queries */
   unsigned bAscKeyBug:1;   /* True if the bba7b69f9849b5bf bug applies */
+  unsigned bHasVCol:1;     /* Index references one or more VIRTUAL columns */
 #ifdef SQLITE_ENABLE_STAT4
   int nSample;             /* Number of elements in aSample[] */
   int nSampleCol;          /* Size of IndexSample.anEq[] and so on */
@@ -17408,7 +17963,7 @@ struct Token {
 ** code for a SELECT that contains aggregate functions.
 **
 ** If Expr.op==TK_AGG_COLUMN or TK_AGG_FUNCTION then Expr.pAggInfo is a
-** pointer to this structure.  The Expr.iColumn field is the index in
+** pointer to this structure.  The Expr.iAgg field is the index in
 ** AggInfo.aCol[] or AggInfo.aFunc[] of information needed to generate
 ** code for that node.
 **
@@ -17428,23 +17983,25 @@ struct AggInfo {
   ExprList *pGroupBy;     /* The group by clause */
   struct AggInfo_col {    /* For each column used in source tables */
     Table *pTab;             /* Source table */
+    Expr *pCExpr;            /* The original expression */
     int iTable;              /* Cursor number of the source table */
-    int iColumn;             /* Column number within the source table */
-    int iSorterColumn;       /* Column number in the sorting index */
     int iMem;                /* Memory location that acts as accumulator */
-    Expr *pExpr;             /* The original expression */
+    i16 iColumn;             /* Column number within the source table */
+    i16 iSorterColumn;       /* Column number in the sorting index */
   } *aCol;
   int nColumn;            /* Number of used entries in aCol[] */
   int nAccumulator;       /* Number of columns that show through to the output.
                           ** Additional columns are used only as parameters to
                           ** aggregate functions */
   struct AggInfo_func {   /* For each aggregate function */
-    Expr *pExpr;             /* Expression encoding the function */
+    Expr *pFExpr;            /* Expression encoding the function */
     FuncDef *pFunc;          /* The aggregate function implementation */
     int iMem;                /* Memory location that acts as accumulator */
     int iDistinct;           /* Ephemeral table used to enforce DISTINCT */
   } *aFunc;
   int nFunc;              /* Number of entries in aFunc[] */
+  u32 selId;              /* Select to which this AggInfo belongs */
+  AggInfo *pNext;         /* Next in list of them all */
 };
 
 /*
@@ -17454,10 +18011,10 @@ struct AggInfo {
 ** it uses less memory in the Expr object, which is a big memory user
 ** in systems with lots of prepared statements.  And few applications
 ** need more than about 10 or 20 variables.  But some extreme users want
-** to have prepared statements with over 32767 variables, and for them
+** to have prepared statements with over 32766 variables, and for them
 ** the option is available (at compile-time).
 */
-#if SQLITE_MAX_VARIABLE_NUMBER<=32767
+#if SQLITE_MAX_VARIABLE_NUMBER<32767
 typedef i16 ynVar;
 #else
 typedef int ynVar;
@@ -17529,6 +18086,13 @@ typedef int ynVar;
 struct Expr {
   u8 op;                 /* Operation performed by this node */
   char affExpr;          /* affinity, or RAISE type */
+  u8 op2;                /* TK_REGISTER/TK_TRUTH: original value of Expr.op
+                         ** TK_COLUMN: the value of p5 for OP_Column
+                         ** TK_AGG_FUNCTION: nesting depth
+                         ** TK_FUNCTION: NC_SelfRef flag if needs OP_PureFunc */
+#ifdef SQLITE_DEBUG
+  u8 vvaFlags;           /* Verification flags. */
+#endif
   u32 flags;             /* Various flags.  EP_* See below */
   union {
     char *zToken;          /* Token value. Zero terminated and dequoted */
@@ -17567,9 +18131,6 @@ struct Expr {
                          ** TK_SELECT_COLUMN: column of the result vector */
   i16 iAgg;              /* Which entry in pAggInfo->aCol[] or ->aFunc[] */
   i16 iRightJoinTable;   /* If EP_FromJoin, the right table of the join */
-  u8 op2;                /* TK_REGISTER/TK_TRUTH: original value of Expr.op
-                         ** TK_COLUMN: the value of p5 for OP_Column
-                         ** TK_AGG_FUNCTION: nesting depth */
   AggInfo *pAggInfo;     /* Used by TK_AGG_COLUMN and TK_AGG_FUNCTION */
   union {
     Table *pTab;           /* TK_COLUMN: Table containing column. Can be NULL
@@ -17598,7 +18159,7 @@ struct Expr {
 #define EP_DblQuoted  0x000040 /* token.z was originally in "..." */
 #define EP_InfixFunc  0x000080 /* True for an infix function: LIKE, GLOB, etc */
 #define EP_Collate    0x000100 /* Tree contains a TK_COLLATE operator */
-  /*                  0x000200 Available for reuse */
+#define EP_Commuted   0x000200 /* Comparison operator has been commuted */
 #define EP_IntValue   0x000400 /* Integer value contained in u.iValue */
 #define EP_xIsSelect  0x000800 /* x.pSelect is valid (otherwise x.pList is) */
 #define EP_Skip       0x001000 /* Operator does not contribute to affinity */
@@ -17606,7 +18167,7 @@ struct Expr {
 #define EP_TokenOnly  0x004000 /* Expr struct EXPR_TOKENONLYSIZE bytes only */
 #define EP_Win        0x008000 /* Contains window functions */
 #define EP_MemToken   0x010000 /* Need to sqlite3DbFree() Expr.zToken */
-#define EP_NoReduce   0x020000 /* Cannot EXPRDUP_REDUCE this Expr */
+                  /*  0x020000 // available for reuse */
 #define EP_Unlikely   0x040000 /* unlikely() or likelihood() function */
 #define EP_ConstFunc  0x080000 /* A SQLITE_FUNC_CONSTANT or _SLOCHNG function */
 #define EP_CanBeNull  0x100000 /* Can be null despite NOT NULL constraint */
@@ -17619,7 +18180,8 @@ struct Expr {
 #define EP_Static    0x8000000 /* Held in memory not obtained from malloc() */
 #define EP_IsTrue   0x10000000 /* Always has boolean value of TRUE */
 #define EP_IsFalse  0x20000000 /* Always has boolean value of FALSE */
-#define EP_Indirect 0x40000000 /* Contained within a TRIGGER or a VIEW */
+#define EP_FromDDL  0x40000000 /* Originates from sqlite_schema */
+               /*   0x80000000 // Available */
 
 /*
 ** The EP_Propagate mask is a set of properties that automatically propagate
@@ -17638,14 +18200,24 @@ struct Expr {
 #define ExprAlwaysTrue(E)   (((E)->flags&(EP_FromJoin|EP_IsTrue))==EP_IsTrue)
 #define ExprAlwaysFalse(E)  (((E)->flags&(EP_FromJoin|EP_IsFalse))==EP_IsFalse)
 
+
+/* Flags for use with Expr.vvaFlags
+*/
+#define EP_NoReduce   0x01  /* Cannot EXPRDUP_REDUCE this Expr */
+#define EP_Immutable  0x02  /* Do not change this Expr node */
+
 /* The ExprSetVVAProperty() macro is used for Verification, Validation,
 ** and Accreditation only.  It works like ExprSetProperty() during VVA
 ** processes but is a no-op for delivery.
 */
 #ifdef SQLITE_DEBUG
-# define ExprSetVVAProperty(E,P)  (E)->flags|=(P)
+# define ExprSetVVAProperty(E,P)   (E)->vvaFlags|=(P)
+# define ExprHasVVAProperty(E,P)   (((E)->vvaFlags&(P))!=0)
+# define ExprClearVVAProperties(E) (E)->vvaFlags = 0
 #else
 # define ExprSetVVAProperty(E,P)
+# define ExprHasVVAProperty(E,P)   0
+# define ExprClearVVAProperties(E)
 #endif
 
 /*
@@ -17683,23 +18255,28 @@ struct Expr {
 ** also be used as the argument to a function, in which case the a.zName
 ** field is not used.
 **
-** By default the Expr.zSpan field holds a human-readable description of
-** the expression that is used in the generation of error messages and
-** column labels.  In this case, Expr.zSpan is typically the text of a
-** column expression as it exists in a SELECT statement.  However, if
-** the bSpanIsTab flag is set, then zSpan is overloaded to mean the name
-** of the result column in the form: DATABASE.TABLE.COLUMN.  This later
-** form is used for name resolution with nested FROM clauses.
+** In order to try to keep memory usage down, the Expr.a.zEName field
+** is used for multiple purposes:
+**
+**     eEName          Usage
+**    ----------       -------------------------
+**    ENAME_NAME       (1) the AS of result set column
+**                     (2) COLUMN= of an UPDATE
+**
+**    ENAME_TAB        DB.TABLE.NAME used to resolve names
+**                     of subqueries
+**
+**    ENAME_SPAN       Text of the original result set
+**                     expression.
 */
 struct ExprList {
   int nExpr;             /* Number of expressions on the list */
   struct ExprList_item { /* For each expression in the list */
     Expr *pExpr;            /* The parse tree for this expression */
-    char *zName;            /* Token associated with this expression */
-    char *zSpan;            /* Original text of the expression */
+    char *zEName;           /* Token associated with this expression */
     u8 sortFlags;           /* Mask of KEYINFO_ORDER_* flags */
+    unsigned eEName :2;     /* Meaning of zEName */
     unsigned done :1;       /* A flag to indicate when processing is finished */
-    unsigned bSpanIsTab :1; /* zSpan holds DB.TABLE.COLUMN */
     unsigned reusable :1;   /* Constant expression is reusable */
     unsigned bSorterRef :1; /* Defer evaluation until after sorting */
     unsigned bNulls: 1;     /* True if explicit "NULLS FIRST/LAST" */
@@ -17714,6 +18291,13 @@ struct ExprList {
 };
 
 /*
+** Allowed values for Expr.a.eEName
+*/
+#define ENAME_NAME  0       /* The AS clause of a result set */
+#define ENAME_SPAN  1       /* Complete text of the result set expression */
+#define ENAME_TAB   2       /* "DB.TABLE.NAME" for the result set */
+
+/*
 ** An instance of this structure can hold a simple list of identifiers,
 ** such as the list "a,b,c" in the following statements:
 **
@@ -17776,6 +18360,7 @@ struct SrcList {
       unsigned isCorrelated :1;  /* True if sub-query is correlated */
       unsigned viaCoroutine :1;  /* Implemented as a co-routine */
       unsigned isRecursive :1;   /* True for recursive reference in WITH */
+      unsigned fromDDL :1;       /* Comes from sqlite_schema */
     } fg;
     int iCursor;      /* The VDBE cursor number used to access this table */
     Expr *pOn;        /* The ON clause of a join */
@@ -17879,21 +18464,24 @@ struct NameContext {
 **    NC_HasWin    == EP_Win
 **
 */
-#define NC_AllowAgg  0x0001  /* Aggregate functions are allowed here */
-#define NC_PartIdx   0x0002  /* True if resolving a partial index WHERE */
-#define NC_IsCheck   0x0004  /* True if resolving names in a CHECK constraint */
-#define NC_InAggFunc 0x0008  /* True if analyzing arguments to an agg func */
-#define NC_HasAgg    0x0010  /* One or more aggregate functions seen */
-#define NC_IdxExpr   0x0020  /* True if resolving columns of CREATE INDEX */
-#define NC_VarSelect 0x0040  /* A correlated subquery has been seen */
-#define NC_UEList    0x0080  /* True if uNC.pEList is used */
-#define NC_UAggInfo  0x0100  /* True if uNC.pAggInfo is used */
-#define NC_UUpsert   0x0200  /* True if uNC.pUpsert is used */
-#define NC_MinMaxAgg 0x1000  /* min/max aggregates seen.  See note above */
-#define NC_Complex   0x2000  /* True if a function or subquery seen */
-#define NC_AllowWin  0x4000  /* Window functions are allowed here */
-#define NC_HasWin    0x8000  /* One or more window functions seen */
-#define NC_IsDDL    0x10000  /* Resolving names in a CREATE statement */
+#define NC_AllowAgg  0x00001  /* Aggregate functions are allowed here */
+#define NC_PartIdx   0x00002  /* True if resolving a partial index WHERE */
+#define NC_IsCheck   0x00004  /* True if resolving a CHECK constraint */
+#define NC_GenCol    0x00008  /* True for a GENERATED ALWAYS AS clause */
+#define NC_HasAgg    0x00010  /* One or more aggregate functions seen */
+#define NC_IdxExpr   0x00020  /* True if resolving columns of CREATE INDEX */
+#define NC_SelfRef   0x0002e  /* Combo: PartIdx, isCheck, GenCol, and IdxExpr */
+#define NC_VarSelect 0x00040  /* A correlated subquery has been seen */
+#define NC_UEList    0x00080  /* True if uNC.pEList is used */
+#define NC_UAggInfo  0x00100  /* True if uNC.pAggInfo is used */
+#define NC_UUpsert   0x00200  /* True if uNC.pUpsert is used */
+#define NC_MinMaxAgg 0x01000  /* min/max aggregates seen.  See note above */
+#define NC_Complex   0x02000  /* True if a function or subquery seen */
+#define NC_AllowWin  0x04000  /* Window functions are allowed here */
+#define NC_HasWin    0x08000  /* One or more window functions seen */
+#define NC_IsDDL     0x10000  /* Resolving names in a CREATE statement */
+#define NC_InAggFunc 0x20000  /* True if analyzing arguments to an agg func */
+#define NC_FromDDL   0x40000  /* SQL text comes from sqlite_schema */
 
 /*
 ** An instance of the following object describes a single ON CONFLICT
@@ -17943,13 +18531,13 @@ struct Upsert {
 ** sequences for the ORDER BY clause.
 */
 struct Select {
-  ExprList *pEList;      /* The fields of the result */
   u8 op;                 /* One of: TK_UNION TK_ALL TK_INTERSECT TK_EXCEPT */
   LogEst nSelectRow;     /* Estimated number of result rows */
   u32 selFlags;          /* Various SF_* values */
   int iLimit, iOffset;   /* Memory registers holding LIMIT & OFFSET counters */
   u32 selId;             /* Unique identifier number for this SELECT */
   int addrOpenEphm[2];   /* OP_OpenEphem opcodes related to this select */
+  ExprList *pEList;      /* The fields of the result */
   SrcList *pSrc;         /* The FROM clause */
   Expr *pWhere;          /* The WHERE clause */
   ExprList *pGroupBy;    /* The GROUP BY clause */
@@ -17974,26 +18562,30 @@ struct Select {
 **     SF_MinMaxAgg  == NC_MinMaxAgg     == SQLITE_FUNC_MINMAX
 **     SF_FixedLimit == WHERE_USE_LIMIT
 */
-#define SF_Distinct       0x00001  /* Output should be DISTINCT */
-#define SF_All            0x00002  /* Includes the ALL keyword */
-#define SF_Resolved       0x00004  /* Identifiers have been resolved */
-#define SF_Aggregate      0x00008  /* Contains agg functions or a GROUP BY */
-#define SF_HasAgg         0x00010  /* Contains aggregate functions */
-#define SF_UsesEphemeral  0x00020  /* Uses the OpenEphemeral opcode */
-#define SF_Expanded       0x00040  /* sqlite3SelectExpand() called on this */
-#define SF_HasTypeInfo    0x00080  /* FROM subqueries have Table metadata */
-#define SF_Compound       0x00100  /* Part of a compound query */
-#define SF_Values         0x00200  /* Synthesized from VALUES clause */
-#define SF_MultiValue     0x00400  /* Single VALUES term with multiple rows */
-#define SF_NestedFrom     0x00800  /* Part of a parenthesized FROM clause */
-#define SF_MinMaxAgg      0x01000  /* Aggregate containing min() or max() */
-#define SF_Recursive      0x02000  /* The recursive part of a recursive CTE */
-#define SF_FixedLimit     0x04000  /* nSelectRow set by a constant LIMIT */
-#define SF_MaybeConvert   0x08000  /* Need convertCompoundSelectToSubquery() */
-#define SF_Converted      0x10000  /* By convertCompoundSelectToSubquery() */
-#define SF_IncludeHidden  0x20000  /* Include hidden columns in output */
-#define SF_ComplexResult  0x40000  /* Result contains subquery or function */
-#define SF_WhereBegin     0x80000  /* Really a WhereBegin() call.  Debug Only */
+#define SF_Distinct      0x0000001 /* Output should be DISTINCT */
+#define SF_All           0x0000002 /* Includes the ALL keyword */
+#define SF_Resolved      0x0000004 /* Identifiers have been resolved */
+#define SF_Aggregate     0x0000008 /* Contains agg functions or a GROUP BY */
+#define SF_HasAgg        0x0000010 /* Contains aggregate functions */
+#define SF_UsesEphemeral 0x0000020 /* Uses the OpenEphemeral opcode */
+#define SF_Expanded      0x0000040 /* sqlite3SelectExpand() called on this */
+#define SF_HasTypeInfo   0x0000080 /* FROM subqueries have Table metadata */
+#define SF_Compound      0x0000100 /* Part of a compound query */
+#define SF_Values        0x0000200 /* Synthesized from VALUES clause */
+#define SF_MultiValue    0x0000400 /* Single VALUES term with multiple rows */
+#define SF_NestedFrom    0x0000800 /* Part of a parenthesized FROM clause */
+#define SF_MinMaxAgg     0x0001000 /* Aggregate containing min() or max() */
+#define SF_Recursive     0x0002000 /* The recursive part of a recursive CTE */
+#define SF_FixedLimit    0x0004000 /* nSelectRow set by a constant LIMIT */
+#define SF_MaybeConvert  0x0008000 /* Need convertCompoundSelectToSubquery() */
+#define SF_Converted     0x0010000 /* By convertCompoundSelectToSubquery() */
+#define SF_IncludeHidden 0x0020000 /* Include hidden columns in output */
+#define SF_ComplexResult 0x0040000 /* Result contains subquery or function */
+#define SF_WhereBegin    0x0080000 /* Really a WhereBegin() call.  Debug Only */
+#define SF_WinRewrite    0x0100000 /* Window function rewrite accomplished */
+#define SF_View          0x0200000 /* SELECT statement is a view */
+#define SF_NoopOrderBy   0x0400000 /* ORDER BY is ignored for this query */
+#define SF_UpdateFrom    0x0800000 /* Statement is an UPDATE...FROM */
 
 /*
 ** The results of a SELECT can be distributed in several ways, as defined
@@ -18058,6 +18650,14 @@ struct Select {
 **     SRT_DistQueue   Store results in priority queue pDest->iSDParm only if
 **                     the same record has never been stored before.  The
 **                     index at pDest->iSDParm+1 hold all prior stores.
+**
+**     SRT_Upfrom      Store results in the temporary table already opened by
+**                     pDest->iSDParm. If (pDest->iSDParm<0), then the temp
+**                     table is an intkey table - in this case the first
+**                     column returned by the SELECT is used as the integer
+**                     key. If (pDest->iSDParm>0), then the table is an index
+**                     table. (pDest->iSDParm) is the number of key columns in
+**                     each index record in this case.
 */
 #define SRT_Union        1  /* Store result as keys in an index */
 #define SRT_Except       2  /* Remove result from a UNION index */
@@ -18077,14 +18677,16 @@ struct Select {
 #define SRT_EphemTab    12  /* Create transient tab and store like SRT_Table */
 #define SRT_Coroutine   13  /* Generate a single row of result */
 #define SRT_Table       14  /* Store result as data with an automatic rowid */
+#define SRT_Upfrom      15  /* Store result as data with rowid */
 
 /*
 ** An instance of this object describes where to put of the results of
 ** a SELECT statement.
 */
 struct SelectDest {
-  u8 eDest;            /* How to dispose of the results.  On of SRT_* above. */
+  u8 eDest;            /* How to dispose of the results.  One of SRT_* above. */
   int iSDParm;         /* A parameter used by the eDest disposal method */
+  int iSDParm2;        /* A second parameter for the eDest disposal method */
   int iSdst;           /* Base register where results are written */
   int nSdst;           /* Number of registers allocated */
   char *zAffSdst;      /* Affinity used when eDest==SRT_Set */
@@ -18210,6 +18812,7 @@ struct Parse {
   Parse *pToplevel;    /* Parse structure for main program (or NULL) */
   Table *pTriggerTab;  /* Table triggers are being coded for */
   Parse *pParentParse; /* Parent parser if this parser is nested */
+  AggInfo *pAggList;   /* List of all AggInfo objects */
   int addrCrTab;       /* Address of OP_CreateBtree opcode on CREATE TABLE */
   u32 nQueryLoop;      /* Est number of iterations of a query (10*log2(N)) */
   u32 oldmask;         /* Mask of old.* columns referenced */
@@ -18239,9 +18842,7 @@ struct Parse {
   ynVar nVar;               /* Number of '?' variables seen in the SQL so far */
   u8 iPkSortOrder;          /* ASC or DESC for INTEGER PRIMARY KEY */
   u8 explain;               /* True if the EXPLAIN flag is found on the query */
-#if !(defined(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_OMIT_ALTERTABLE))
   u8 eParseMode;            /* PARSE_MODE_XXX constant */
-#endif
 #ifndef SQLITE_OMIT_VIRTUALTABLE
   int nVtabLock;            /* Number of virtual tables to lock */
 #endif
@@ -18273,8 +18874,8 @@ struct Parse {
 
 #define PARSE_MODE_NORMAL        0
 #define PARSE_MODE_DECLARE_VTAB  1
-#define PARSE_MODE_RENAME_COLUMN 2
-#define PARSE_MODE_RENAME_TABLE  3
+#define PARSE_MODE_RENAME        2
+#define PARSE_MODE_UNMAP         3
 
 /*
 ** Sizes and pointers of various parts of the Parse object.
@@ -18296,7 +18897,7 @@ struct Parse {
 #if defined(SQLITE_OMIT_ALTERTABLE)
   #define IN_RENAME_OBJECT 0
 #else
-  #define IN_RENAME_OBJECT (pParse->eParseMode>=PARSE_MODE_RENAME_COLUMN)
+  #define IN_RENAME_OBJECT (pParse->eParseMode>=PARSE_MODE_RENAME)
 #endif
 
 #if defined(SQLITE_OMIT_VIRTUALTABLE) && defined(SQLITE_OMIT_ALTERTABLE)
@@ -18429,6 +19030,7 @@ struct TriggerStep {
   Trigger *pTrig;      /* The trigger that this step is a part of */
   Select *pSelect;     /* SELECT statement or RHS of INSERT INTO SELECT ... */
   char *zTarget;       /* Target table for DELETE, UPDATE, INSERT */
+  SrcList *pFrom;      /* FROM clause for UPDATE statement (if any) */
   Expr *pWhere;        /* The WHERE clause for DELETE or UPDATE steps */
   ExprList *pExprList; /* SET clause for UPDATE */
   IdList *pIdList;     /* Column names for INSERT */
@@ -18447,7 +19049,7 @@ typedef struct DbFixer DbFixer;
 struct DbFixer {
   Parse *pParse;      /* The parsing context.  Error messages written here */
   Schema *pSchema;    /* Fix items to this schema */
-  int bVarOnly;       /* Check for variable references only */
+  u8 bTemp;           /* True for TEMP schema entries */
   const char *zDb;    /* Make sure all objects are contained in this database */
   const char *zType;  /* Type of the container - used for error messages */
   const Token *pName; /* Name of the container - used for error messages */
@@ -18484,6 +19086,7 @@ typedef struct {
   int rc;             /* Result code stored here */
   u32 mInitFlags;     /* Flags controlling error messages */
   u32 nInitRow;       /* Number of rows processed */
+  Pgno mxPage;        /* Maximum page number.  0 for no limit. */
 } InitData;
 
 /*
@@ -18552,7 +19155,6 @@ struct Sqlite3Config {
   int (*xTestCallback)(int);        /* Invoked by sqlite3FaultSim() */
 #endif
   int bLocaltimeFault;              /* True to fail localtime() calls */
-  int bInternalFunctions;           /* Internal SQL functions are visible */
   int iOnceResetThreshold;          /* When to reset OP_Once counters */
   u32 szSorterRef;                  /* Min size in bytes to use sorter-refs */
   unsigned int iPrngSeed;           /* Alternative fixed seed for the PRNG */
@@ -18585,7 +19187,7 @@ struct Walker {
   int (*xSelectCallback)(Walker*,Select*);  /* Callback for SELECTs */
   void (*xSelectCallback2)(Walker*,Select*);/* Second callback for SELECTs */
   int walkerDepth;                          /* Number of subqueries */
-  u8 eCode;                                 /* A small processing code */
+  u16 eCode;                                /* A small processing code */
   union {                                   /* Extra data for callback */
     NameContext *pNC;                         /* Naming context */
     int n;                                    /* A counter */
@@ -18601,6 +19203,8 @@ struct Walker {
     struct WindowRewrite *pRewrite;           /* Window rewrite context */
     struct WhereConst *pConst;                /* WHERE clause constants */
     struct RenameCtx *pRename;                /* RENAME COLUMN context */
+    struct Table *pTab;                       /* Table of generated column */
+    struct SrcList_item *pSrcItem;            /* A single FROM clause item */
   } u;
 };
 
@@ -18613,6 +19217,9 @@ SQLITE_PRIVATE int sqlite3WalkSelectFrom(Walker*, Select*);
 SQLITE_PRIVATE int sqlite3ExprWalkNoop(Walker*, Expr*);
 SQLITE_PRIVATE int sqlite3SelectWalkNoop(Walker*, Select*);
 SQLITE_PRIVATE int sqlite3SelectWalkFail(Walker*, Select*);
+SQLITE_PRIVATE int sqlite3WalkerDepthIncrease(Walker*,Select*);
+SQLITE_PRIVATE void sqlite3WalkerDepthDecrease(Walker*,Select*);
+
 #ifdef SQLITE_DEBUG
 SQLITE_PRIVATE void sqlite3SelectWalkAssert2(Walker*, Select*);
 #endif
@@ -18714,7 +19321,7 @@ SQLITE_PRIVATE Window *sqlite3WindowAlloc(Parse*, int, int, Expr*, int , Expr*,
 SQLITE_PRIVATE void sqlite3WindowAttach(Parse*, Expr*, Window*);
 SQLITE_PRIVATE void sqlite3WindowLink(Select *pSel, Window *pWin);
 SQLITE_PRIVATE int sqlite3WindowCompare(Parse*, Window*, Window*, int);
-SQLITE_PRIVATE void sqlite3WindowCodeInit(Parse*, Window*);
+SQLITE_PRIVATE void sqlite3WindowCodeInit(Parse*, Select*);
 SQLITE_PRIVATE void sqlite3WindowCodeStep(Parse*, Select*, WhereInfo*, int, int);
 SQLITE_PRIVATE int sqlite3WindowRewrite(Parse*, Select*);
 SQLITE_PRIVATE int sqlite3ExpandSubquery(Parse*, struct SrcList_item*);
@@ -18757,13 +19364,16 @@ SQLITE_PRIVATE int sqlite3CantopenError(int);
 #ifdef SQLITE_DEBUG
 SQLITE_PRIVATE   int sqlite3NomemError(int);
 SQLITE_PRIVATE   int sqlite3IoerrnomemError(int);
-SQLITE_PRIVATE   int sqlite3CorruptPgnoError(int,Pgno);
 # define SQLITE_NOMEM_BKPT sqlite3NomemError(__LINE__)
 # define SQLITE_IOERR_NOMEM_BKPT sqlite3IoerrnomemError(__LINE__)
-# define SQLITE_CORRUPT_PGNO(P) sqlite3CorruptPgnoError(__LINE__,(P))
 #else
 # define SQLITE_NOMEM_BKPT SQLITE_NOMEM
 # define SQLITE_IOERR_NOMEM_BKPT SQLITE_IOERR_NOMEM
+#endif
+#if defined(SQLITE_DEBUG) || defined(SQLITE_ENABLE_CORRUPT_PGNO)
+SQLITE_PRIVATE   int sqlite3CorruptPgnoError(int,Pgno);
+# define SQLITE_CORRUPT_PGNO(P) sqlite3CorruptPgnoError(__LINE__,(P))
+#else
 # define SQLITE_CORRUPT_PGNO(P) sqlite3CorruptError(__LINE__)
 #endif
 
@@ -18980,6 +19590,7 @@ SQLITE_PRIVATE void sqlite3PExprAddSelect(Parse*, Expr*, Select*);
 SQLITE_PRIVATE Expr *sqlite3ExprAnd(Parse*,Expr*, Expr*);
 SQLITE_PRIVATE Expr *sqlite3ExprSimplifiedAndOr(Expr*);
 SQLITE_PRIVATE Expr *sqlite3ExprFunction(Parse*,ExprList*, Token*, int);
+SQLITE_PRIVATE void sqlite3ExprFunctionUsable(Parse*,Expr*,FuncDef*);
 SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse*, Expr*, u32);
 SQLITE_PRIVATE void sqlite3ExprDelete(sqlite3*, Expr*);
 SQLITE_PRIVATE void sqlite3ExprUnmapAndDelete(Parse*, Expr*);
@@ -19006,9 +19617,16 @@ SQLITE_PRIVATE void sqlite3DeleteColumnNames(sqlite3*,Table*);
 SQLITE_PRIVATE int sqlite3ColumnsFromExprList(Parse*,ExprList*,i16*,Column**);
 SQLITE_PRIVATE void sqlite3SelectAddColumnTypeAndCollation(Parse*,Table*,Select*,char);
 SQLITE_PRIVATE Table *sqlite3ResultSetOfSelect(Parse*,Select*,char);
-SQLITE_PRIVATE void sqlite3OpenMasterTable(Parse *, int);
+SQLITE_PRIVATE void sqlite3OpenSchemaTable(Parse *, int);
 SQLITE_PRIVATE Index *sqlite3PrimaryKeyIndex(Table*);
-SQLITE_PRIVATE i16 sqlite3ColumnOfIndex(Index*, i16);
+SQLITE_PRIVATE i16 sqlite3TableColumnToIndex(Index*, i16);
+#ifdef SQLITE_OMIT_GENERATED_COLUMNS
+# define sqlite3TableColumnToStorage(T,X) (X)  /* No-op pass-through */
+# define sqlite3StorageColumnToTable(T,X) (X)  /* No-op pass-through */
+#else
+SQLITE_PRIVATE   i16 sqlite3TableColumnToStorage(Table*, i16);
+SQLITE_PRIVATE   i16 sqlite3StorageColumnToTable(Table*, i16);
+#endif
 SQLITE_PRIVATE void sqlite3StartTable(Parse*,Token*,Token*,int,int,int,int);
 #if SQLITE_ENABLE_HIDDEN_COLUMNS
 SQLITE_PRIVATE   void sqlite3ColumnPropertiesFromName(Table*, Column*);
@@ -19021,14 +19639,17 @@ SQLITE_PRIVATE void sqlite3AddPrimaryKey(Parse*, ExprList*, int, int, int);
 SQLITE_PRIVATE void sqlite3AddCheckConstraint(Parse*, Expr*);
 SQLITE_PRIVATE void sqlite3AddDefaultValue(Parse*,Expr*,const char*,const char*);
 SQLITE_PRIVATE void sqlite3AddCollateType(Parse*, Token*);
+SQLITE_PRIVATE void sqlite3AddGenerated(Parse*,Expr*,Token*);
 SQLITE_PRIVATE void sqlite3EndTable(Parse*,Token*,Token*,u8,Select*);
 SQLITE_PRIVATE int sqlite3ParseUri(const char*,const char*,unsigned int*,
                     sqlite3_vfs**,char**,char **);
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
 SQLITE_PRIVATE   int sqlite3CodecQueryParameters(sqlite3*,const char*,const char*);
 #else
 # define sqlite3CodecQueryParameters(A,B,C) 0
 #endif
+/* END SQLCIPHER */
 SQLITE_PRIVATE Btree *sqlite3DbNameToBtree(sqlite3*,const char*);
 
 #ifdef SQLITE_UNTESTABLE
@@ -19078,10 +19699,14 @@ SQLITE_PRIVATE   void sqlite3AutoincrementEnd(Parse *pParse);
 # define sqlite3AutoincrementEnd(X)
 #endif
 SQLITE_PRIVATE void sqlite3Insert(Parse*, SrcList*, Select*, IdList*, int, Upsert*);
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+SQLITE_PRIVATE   void sqlite3ComputeGeneratedColumns(Parse*, int, Table*);
+#endif
 SQLITE_PRIVATE void *sqlite3ArrayAllocate(sqlite3*,void*,int,int*,int*);
 SQLITE_PRIVATE IdList *sqlite3IdListAppend(Parse*, IdList*, Token*);
 SQLITE_PRIVATE int sqlite3IdListIndex(IdList*,const char*);
 SQLITE_PRIVATE SrcList *sqlite3SrcListEnlarge(Parse*, SrcList*, int, int);
+SQLITE_PRIVATE SrcList *sqlite3SrcListAppendList(Parse *pParse, SrcList *p1, SrcList *p2);
 SQLITE_PRIVATE SrcList *sqlite3SrcListAppend(Parse*, SrcList*, Token*, Token*);
 SQLITE_PRIVATE SrcList *sqlite3SrcListAppendFromTerm(Parse*, SrcList*, Token*, Token*,
                                       Token*, Select*, Expr*, IdList*);
@@ -19122,17 +19747,20 @@ SQLITE_PRIVATE int sqlite3WhereOkOnePass(WhereInfo*, int*);
 #define ONEPASS_OFF      0        /* Use of ONEPASS not allowed */
 #define ONEPASS_SINGLE   1        /* ONEPASS valid for a single row update */
 #define ONEPASS_MULTI    2        /* ONEPASS is valid for multiple rows */
+SQLITE_PRIVATE int sqlite3WhereUsesDeferredSeek(WhereInfo*);
 SQLITE_PRIVATE void sqlite3ExprCodeLoadIndexColumn(Parse*, Index*, int, int, int);
 SQLITE_PRIVATE int sqlite3ExprCodeGetColumn(Parse*, Table*, int, int, int, u8);
 SQLITE_PRIVATE void sqlite3ExprCodeGetColumnOfTable(Vdbe*, Table*, int, int, int);
 SQLITE_PRIVATE void sqlite3ExprCodeMove(Parse*, int, int, int);
 SQLITE_PRIVATE void sqlite3ExprCode(Parse*, Expr*, int);
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+SQLITE_PRIVATE void sqlite3ExprCodeGeneratedColumn(Parse*, Column*, int);
+#endif
 SQLITE_PRIVATE void sqlite3ExprCodeCopy(Parse*, Expr*, int);
 SQLITE_PRIVATE void sqlite3ExprCodeFactorable(Parse*, Expr*, int);
-SQLITE_PRIVATE int sqlite3ExprCodeAtInit(Parse*, Expr*, int);
+SQLITE_PRIVATE int sqlite3ExprCodeRunJustOnce(Parse*, Expr*, int);
 SQLITE_PRIVATE int sqlite3ExprCodeTemp(Parse*, Expr*, int*);
 SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse*, Expr*, int);
-SQLITE_PRIVATE void sqlite3ExprCodeAndCache(Parse*, Expr*, int);
 SQLITE_PRIVATE int sqlite3ExprCodeExprList(Parse*, ExprList*, int, int, u8);
 #define SQLITE_ECEL_DUP      0x01  /* Deep, not shallow copies */
 #define SQLITE_ECEL_FACTOR   0x02  /* Factor out constant terms */
@@ -19157,6 +19785,7 @@ SQLITE_PRIVATE int sqlite3ExprCompareSkip(Expr*, Expr*, int);
 SQLITE_PRIVATE int sqlite3ExprListCompare(ExprList*, ExprList*, int);
 SQLITE_PRIVATE int sqlite3ExprImpliesExpr(Parse*,Expr*, Expr*, int);
 SQLITE_PRIVATE int sqlite3ExprImpliesNonNullRow(Expr*,int);
+SQLITE_PRIVATE void sqlite3AggInfoPersistWalkerInit(Walker*,Parse*);
 SQLITE_PRIVATE void sqlite3ExprAnalyzeAggregates(NameContext*, Expr*);
 SQLITE_PRIVATE void sqlite3ExprAnalyzeAggList(NameContext*,ExprList*);
 SQLITE_PRIVATE int sqlite3ExprCoveredByIndex(Expr*, int iCur, Index *pIdx);
@@ -19174,6 +19803,7 @@ SQLITE_PRIVATE void sqlite3EndTransaction(Parse*,int);
 SQLITE_PRIVATE void sqlite3Savepoint(Parse*, int, Token*);
 SQLITE_PRIVATE void sqlite3CloseSavepoints(sqlite3 *);
 SQLITE_PRIVATE void sqlite3LeaveMutexAndCloseZombie(sqlite3*);
+SQLITE_PRIVATE u32 sqlite3IsTrueOrFalse(const char*);
 SQLITE_PRIVATE int sqlite3ExprIdToTrueFalse(Expr*);
 SQLITE_PRIVATE int sqlite3ExprTruthValue(const Expr*);
 SQLITE_PRIVATE int sqlite3ExprIsConstant(Expr*);
@@ -19246,13 +19876,14 @@ SQLITE_PRIVATE   TriggerStep *sqlite3TriggerSelectStep(sqlite3*,Select*,
 SQLITE_PRIVATE   TriggerStep *sqlite3TriggerInsertStep(Parse*,Token*, IdList*,
                                         Select*,u8,Upsert*,
                                         const char*,const char*);
-SQLITE_PRIVATE   TriggerStep *sqlite3TriggerUpdateStep(Parse*,Token*,ExprList*, Expr*, u8,
-                                        const char*,const char*);
+SQLITE_PRIVATE   TriggerStep *sqlite3TriggerUpdateStep(Parse*,Token*,SrcList*,ExprList*,
+                                        Expr*, u8, const char*,const char*);
 SQLITE_PRIVATE   TriggerStep *sqlite3TriggerDeleteStep(Parse*,Token*, Expr*,
                                         const char*,const char*);
 SQLITE_PRIVATE   void sqlite3DeleteTrigger(sqlite3*, Trigger*);
 SQLITE_PRIVATE   void sqlite3UnlinkAndDeleteTrigger(sqlite3*,int,const char*);
 SQLITE_PRIVATE   u32 sqlite3TriggerColmask(Parse*,Trigger*,ExprList*,int,int,Table*,int);
+SQLITE_PRIVATE   SrcList *sqlite3TriggerStepSrc(Parse*, TriggerStep*);
 # define sqlite3ParseToplevel(p) ((p)->pToplevel ? (p)->pToplevel : (p))
 # define sqlite3IsToplevel(p) ((p)->pToplevel==0)
 #else
@@ -19266,9 +19897,11 @@ SQLITE_PRIVATE   u32 sqlite3TriggerColmask(Parse*,Trigger*,ExprList*,int,int,Tab
 # define sqlite3ParseToplevel(p) p
 # define sqlite3IsToplevel(p) 1
 # define sqlite3TriggerColmask(A,B,C,D,E,F,G) 0
+# define sqlite3TriggerStepSrc(A,B) 0
 #endif
 
 SQLITE_PRIVATE int sqlite3JoinType(Parse*, Token*, Token*, Token*);
+SQLITE_PRIVATE void sqlite3SetJoinExpr(Expr*,int);
 SQLITE_PRIVATE void sqlite3CreateForeignKey(Parse*, ExprList*, Token*, ExprList*, int);
 SQLITE_PRIVATE void sqlite3DeferForeignKey(Parse*, int);
 #ifndef SQLITE_OMIT_AUTHORIZATION
@@ -19283,6 +19916,7 @@ SQLITE_PRIVATE   int sqlite3AuthReadCol(Parse*, const char *, const char *, int)
 # define sqlite3AuthContextPush(a,b,c)
 # define sqlite3AuthContextPop(a)  ((void)(a))
 #endif
+SQLITE_PRIVATE int sqlite3DbIsNamed(sqlite3 *db, int iDb, const char *zName);
 SQLITE_PRIVATE void sqlite3Attach(Parse*, Expr*, Expr*, Expr*);
 SQLITE_PRIVATE void sqlite3Detach(Parse*, Expr*);
 SQLITE_PRIVATE void sqlite3FixInit(DbFixer*, Parse*, int, const char*, const Token*);
@@ -19292,8 +19926,10 @@ SQLITE_PRIVATE int sqlite3FixExpr(DbFixer*, Expr*);
 SQLITE_PRIVATE int sqlite3FixExprList(DbFixer*, ExprList*);
 SQLITE_PRIVATE int sqlite3FixTriggerStep(DbFixer*, TriggerStep*);
 SQLITE_PRIVATE int sqlite3RealSameAsInt(double,sqlite3_int64);
+SQLITE_PRIVATE void sqlite3Int64ToText(i64,char*);
 SQLITE_PRIVATE int sqlite3AtoF(const char *z, double*, int, u8);
 SQLITE_PRIVATE int sqlite3GetInt32(const char *, int*);
+SQLITE_PRIVATE int sqlite3GetUInt32(const char*, u32*);
 SQLITE_PRIVATE int sqlite3Atoi(const char*);
 #ifndef SQLITE_OMIT_UTF16
 SQLITE_PRIVATE int sqlite3Utf16ByteLen(const void *pData, int nChar);
@@ -19331,6 +19967,8 @@ SQLITE_PRIVATE int sqlite3VarintLen(u64 v);
 */
 #define getVarint32(A,B)  \
   (u8)((*(A)<(u8)0x80)?((B)=(u32)*(A)),1:sqlite3GetVarint32((A),(u32 *)&(B)))
+#define getVarint32NR(A,B) \
+  B=(u32)*(A);if(B>=0x80)sqlite3GetVarint32((A),(u32*)&(B))
 #define putVarint32(A,B)  \
   (u8)(((u32)(B)<(u32)0x80)?(*(A)=(unsigned char)(B)),1:\
   sqlite3PutVarint((A),(B)))
@@ -19340,10 +19978,10 @@ SQLITE_PRIVATE int sqlite3VarintLen(u64 v);
 
 SQLITE_PRIVATE const char *sqlite3IndexAffinityStr(sqlite3*, Index*);
 SQLITE_PRIVATE void sqlite3TableAffinity(Vdbe*, Table*, int);
-SQLITE_PRIVATE char sqlite3CompareAffinity(Expr *pExpr, char aff2);
-SQLITE_PRIVATE int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity);
+SQLITE_PRIVATE char sqlite3CompareAffinity(const Expr *pExpr, char aff2);
+SQLITE_PRIVATE int sqlite3IndexAffinityOk(const Expr *pExpr, char idx_affinity);
 SQLITE_PRIVATE char sqlite3TableColumnAffinity(Table*,int);
-SQLITE_PRIVATE char sqlite3ExprAffinity(Expr *pExpr);
+SQLITE_PRIVATE char sqlite3ExprAffinity(const Expr *pExpr);
 SQLITE_PRIVATE int sqlite3Atoi64(const char*, i64*, int, u8);
 SQLITE_PRIVATE int sqlite3DecOrHexToI64(const char*, i64*);
 SQLITE_PRIVATE void sqlite3ErrorWithMsg(sqlite3*, int, const char*,...);
@@ -19366,9 +20004,10 @@ SQLITE_PRIVATE int sqlite3ReadSchema(Parse *pParse);
 SQLITE_PRIVATE CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char*,int);
 SQLITE_PRIVATE int sqlite3IsBinary(const CollSeq*);
 SQLITE_PRIVATE CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char*zName);
-SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr);
-SQLITE_PRIVATE CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, Expr *pExpr);
-SQLITE_PRIVATE int sqlite3ExprCollSeqMatch(Parse*,Expr*,Expr*);
+SQLITE_PRIVATE void sqlite3SetTextEncoding(sqlite3 *db, u8);
+SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, const Expr *pExpr);
+SQLITE_PRIVATE CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, const Expr *pExpr);
+SQLITE_PRIVATE int sqlite3ExprCollSeqMatch(Parse*,const Expr*,const Expr*);
 SQLITE_PRIVATE Expr *sqlite3ExprAddCollateToken(Parse *pParse, Expr*, const Token*, int);
 SQLITE_PRIVATE Expr *sqlite3ExprAddCollateString(Parse*,Expr*,const char*);
 SQLITE_PRIVATE Expr *sqlite3ExprSkipCollate(Expr*);
@@ -19410,14 +20049,15 @@ SQLITE_PRIVATE const unsigned char sqlite3UpperToLower[];
 SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[];
 SQLITE_PRIVATE SQLITE_WSD struct Sqlite3Config sqlite3Config;
 SQLITE_PRIVATE FuncDefHash sqlite3BuiltinFunctions;
+SQLITE_API extern u32 sqlite3_unsupported_selecttrace;
 #ifndef SQLITE_OMIT_WSD
 SQLITE_PRIVATE int sqlite3PendingByte;
 #endif
-#endif
+#endif /* SQLITE_AMALGAMATION */
 #ifdef VDBE_PROFILE
 SQLITE_PRIVATE sqlite3_uint64 sqlite3NProfileCnt;
 #endif
-SQLITE_PRIVATE void sqlite3RootPageMoved(sqlite3*, int, int, int);
+SQLITE_PRIVATE void sqlite3RootPageMoved(sqlite3*, int, Pgno, Pgno);
 SQLITE_PRIVATE void sqlite3Reindex(Parse*, Token*, Token*);
 SQLITE_PRIVATE void sqlite3AlterFunctions(void);
 SQLITE_PRIVATE void sqlite3AlterRenameTable(Parse*, SrcList*, Token*);
@@ -19429,7 +20069,14 @@ SQLITE_PRIVATE void sqlite3CodeRhsOfIN(Parse*, Expr*, int);
 SQLITE_PRIVATE int sqlite3CodeSubselect(Parse*, Expr*);
 SQLITE_PRIVATE void sqlite3SelectPrep(Parse*, Select*, NameContext*);
 SQLITE_PRIVATE void sqlite3SelectWrongNumTermsError(Parse *pParse, Select *p);
-SQLITE_PRIVATE int sqlite3MatchSpanName(const char*, const char*, const char*, const char*);
+SQLITE_PRIVATE int sqlite3MatchEName(
+  const struct ExprList_item*,
+  const char*,
+  const char*,
+  const char*
+);
+SQLITE_PRIVATE Bitmask sqlite3ExprColUsed(Expr*);
+SQLITE_PRIVATE u8 sqlite3StrIHash(const char*);
 SQLITE_PRIVATE int sqlite3ResolveExprNames(NameContext*, Expr*);
 SQLITE_PRIVATE int sqlite3ResolveExprListNames(NameContext*, ExprList*);
 SQLITE_PRIVATE void sqlite3ResolveSelectNames(Parse*, Select*, NameContext*);
@@ -19445,7 +20092,7 @@ SQLITE_PRIVATE void sqlite3RenameExprlistUnmap(Parse*, ExprList*);
 SQLITE_PRIVATE CollSeq *sqlite3GetCollSeq(Parse*, u8, CollSeq *, const char*);
 SQLITE_PRIVATE char sqlite3AffinityType(const char*, Column*);
 SQLITE_PRIVATE void sqlite3Analyze(Parse*, Token*, Token*);
-SQLITE_PRIVATE int sqlite3InvokeBusyHandler(BusyHandler*, sqlite3_file*);
+SQLITE_PRIVATE int sqlite3InvokeBusyHandler(BusyHandler*);
 SQLITE_PRIVATE int sqlite3FindDb(sqlite3*, Token*);
 SQLITE_PRIVATE int sqlite3FindDbName(sqlite3 *, const char *);
 SQLITE_PRIVATE int sqlite3AnalysisLoad(sqlite3*,int iDB);
@@ -19524,7 +20171,7 @@ SQLITE_PRIVATE   void sqlite3CloseExtensions(sqlite3*);
 #endif
 
 #ifndef SQLITE_OMIT_SHARED_CACHE
-SQLITE_PRIVATE   void sqlite3TableLock(Parse *, int, int, u8, const char *);
+SQLITE_PRIVATE   void sqlite3TableLock(Parse *, int, Pgno, u8, const char *);
 #else
   #define sqlite3TableLock(v,w,x,y,z)
 #endif
@@ -19567,6 +20214,14 @@ SQLITE_PRIVATE    Module *sqlite3VtabCreateModule(
    );
 #  define sqlite3VtabInSync(db) ((db)->nVTrans>0 && (db)->aVTrans==0)
 #endif
+SQLITE_PRIVATE int sqlite3ReadOnlyShadowTables(sqlite3 *db);
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+SQLITE_PRIVATE   int sqlite3ShadowTableName(sqlite3 *db, const char *zName);
+SQLITE_PRIVATE   int sqlite3IsShadowTableOf(sqlite3*,Table*,const char*);
+#else
+# define sqlite3ShadowTableName(A,B) 0
+# define sqlite3IsShadowTableOf(A,B,C) 0
+#endif
 SQLITE_PRIVATE int sqlite3VtabEponymousTableInit(Parse*,Module*);
 SQLITE_PRIVATE void sqlite3VtabEponymousTableClear(sqlite3*,Module*);
 SQLITE_PRIVATE void sqlite3VtabMakeWritable(Parse*,Table*);
@@ -19588,7 +20243,8 @@ SQLITE_PRIVATE char *sqlite3Normalize(Vdbe*, const char*);
 #endif
 SQLITE_PRIVATE int sqlite3Reprepare(Vdbe*);
 SQLITE_PRIVATE void sqlite3ExprListCheckLength(Parse*, ExprList*, const char*);
-SQLITE_PRIVATE CollSeq *sqlite3BinaryCompareCollSeq(Parse *, Expr *, Expr *);
+SQLITE_PRIVATE CollSeq *sqlite3ExprCompareCollSeq(Parse*,const Expr*);
+SQLITE_PRIVATE CollSeq *sqlite3BinaryCompareCollSeq(Parse *, const Expr*, const Expr*);
 SQLITE_PRIVATE int sqlite3TempInMemory(const sqlite3*);
 SQLITE_PRIVATE const char *sqlite3JournalModename(int);
 #ifndef SQLITE_OMIT_WAL
@@ -19912,19 +20568,17 @@ typedef struct {
   int (*ctx_free)(void **ctx);
   int (*fips_status)(void *ctx);
   const char* (*get_provider_version)(void *ctx);
-  int (*id)(void *ctx);
-  void* (*status)(void *ctx);
 } sqlcipher_provider;
 
 /* utility functions */
-void sqlcipher_free(void *, int);
-void* sqlcipher_malloc(int);
-void sqlcipher_mlock(void *, int);
-void sqlcipher_munlock(void *, int);
-void* sqlcipher_memset(void *, unsigned char, int);
-int sqlcipher_ismemset(const void *, unsigned char, int);
+void* sqlcipher_malloc(u64);
+void sqlcipher_mlock(void *, u64);
+void sqlcipher_munlock(void *, u64);
+void* sqlcipher_memset(void *, unsigned char, u64);
+int sqlcipher_ismemset(const void *, unsigned char, u64);
 int sqlcipher_memcmp(const void *, const void *, int);
-void sqlcipher_free(void *, int);
+void sqlcipher_free(void *, u64);
+char* sqlcipher_version();
 
 /* provider interfaces */
 int sqlcipher_register_provider(sqlcipher_provider *);
@@ -20372,7 +21026,7 @@ struct Btree {
 **
 ** Fields in this structure are accessed under the BtShared.mutex
 ** mutex, except for nRef and pNext which are accessed under the
-** global SQLITE_MUTEX_STATIC_MASTER mutex.  The pPager field
+** global SQLITE_MUTEX_STATIC_MAIN mutex.  The pPager field
 ** may not be modified once it is initially set as long as nRef>0.
 ** The pSchema field may be set once under BtShared.mutex and
 ** thereafter is unchanged as long as nRef>0.
@@ -20408,9 +21062,7 @@ struct BtShared {
 #endif
   u8 inTransaction;     /* Transaction state */
   u8 max1bytePayload;   /* Maximum first byte of cell for a 1-byte payload */
-#ifdef SQLITE_HAS_CODEC
-  u8 optimalReserve;    /* Desired amount of reserved space per page */
-#endif
+  u8 nReserveWanted;    /* Desired number of extra bytes per page */
   u16 btsFlags;         /* Boolean parameters.  See BTS_* macros below */
   u16 maxLocal;         /* Maximum local payload in non-LEAFDATA tables */
   u16 minLocal;         /* Minimum local payload in non-LEAFDATA tables */
@@ -20533,6 +21185,7 @@ struct BtCursor {
 #define BTCF_AtLast       0x08   /* Cursor is pointing ot the last entry */
 #define BTCF_Incrblob     0x10   /* True if an incremental I/O handle */
 #define BTCF_Multiple     0x20   /* Maybe another cursor on the same btree */
+#define BTCF_Pinned       0x40   /* Cursor is busy and cannot be moved */
 
 /*
 ** Potential values for BtCursor.eState.
@@ -20671,11 +21324,13 @@ struct IntegrityCk {
   Pgno nPage;       /* Number of pages in the database */
   int mxErr;        /* Stop accumulating errors when this reaches zero */
   int nErr;         /* Number of messages written to zErrMsg so far */
-  int mallocFailed; /* A memory allocation error has occurred */
+  int bOomFault;    /* A memory allocation error has occurred */
   const char *zPfx; /* Error message prefix */
-  int v1, v2;       /* Values for up to two %d fields in zPfx */
+  Pgno v1;          /* Value for first %u substitution in zPfx */
+  int v2;           /* Value for second %d substitution in zPfx */
   StrAccum errMsg;  /* Accumulate the error message text here */
   u32 *heap;        /* Min-heap used for analyzing cell coverage */
+  sqlite3 *db;      /* Database connection running the check */
 };
 
 /*
@@ -20725,7 +21380,7 @@ SQLITE_API void sqlite3pager_reset(Pager *pPager);
 #define CIPHER_STR(s) #s
 
 #ifndef CIPHER_VERSION_NUMBER
-#define CIPHER_VERSION_NUMBER 4.3.0
+#define CIPHER_VERSION_NUMBER 4.4.2
 #endif
 
 #ifndef CIPHER_VERSION_BUILD
@@ -21006,6 +21661,11 @@ int sqlcipher_codec_ctx_integrity_check(codec_ctx *, Parse *, char *);
 #include "sqlcipher_ext.h"
 #endif
 
+#ifdef SQLCIPHER_TEST
+static int cipher_fail_next_encrypt = 0;
+static int cipher_fail_next_decrypt = 0;
+#endif
+
 /* Generate code to return a string value */
 static void codec_vdbe_return_string(Parse *pParse, const char *zLabel, const char *value, int value_type){
   Vdbe *v = sqlite3GetVdbe(pParse);
@@ -21078,6 +21738,24 @@ int sqlcipher_codec_pragma(sqlite3* db, int iDb, Parse *pParse, const char *zLef
       }
   } else
 #endif
+#ifdef SQLCIPHER_TEST
+  if( sqlite3StrICmp(zLeft,"cipher_fail_next_encrypt")==0 ){
+    if( zRight ) {
+      cipher_fail_next_encrypt = sqlite3GetBoolean(zRight,1);
+    } else {
+      char *fail = sqlite3_mprintf("%d", cipher_fail_next_encrypt);
+      codec_vdbe_return_string(pParse, "cipher_fail_next_encrypt", fail, P4_DYNAMIC);
+    }
+  }else
+  if( sqlite3StrICmp(zLeft,"cipher_fail_next_decrypt")==0 ){
+    if( zRight ) {
+      cipher_fail_next_decrypt = sqlite3GetBoolean(zRight,1);
+    } else {
+      char *fail = sqlite3_mprintf("%d", cipher_fail_next_decrypt);
+      codec_vdbe_return_string(pParse, "cipher_fail_next_decrypt", fail, P4_DYNAMIC);
+    }
+  }else
+#endif
   if( sqlite3StrICmp(zLeft, "cipher_fips_status")== 0 && !zRight ){
     if(ctx) {
       char *fips_mode_status = sqlite3_mprintf("%d", sqlcipher_codec_fips_status(ctx));
@@ -21086,7 +21764,10 @@ int sqlcipher_codec_pragma(sqlite3* db, int iDb, Parse *pParse, const char *zLef
   } else
   if( sqlite3StrICmp(zLeft, "cipher_store_pass")==0 && zRight ) {
     if(ctx) {
+      char *deprecation = "PRAGMA cipher_store_pass is deprecated, please remove from use";
       sqlcipher_codec_set_store_pass(ctx, sqlite3GetBoolean(zRight, 1));
+      codec_vdbe_return_string(pParse, "cipher_store_pass", deprecation, P4_TRANSIENT);
+      sqlite3_log(SQLITE_WARNING, deprecation);
     }
   } else
   if( sqlite3StrICmp(zLeft, "cipher_store_pass")==0 && !zRight ) {
@@ -21122,12 +21803,7 @@ int sqlcipher_codec_pragma(sqlite3* db, int iDb, Parse *pParse, const char *zLef
     }
   } else
   if( sqlite3StrICmp(zLeft, "cipher_version")==0 && !zRight ){
-#ifdef CIPHER_VERSION_QUALIFIER
-    char *version = sqlite3_mprintf("%s %s %s", CIPHER_XSTR(CIPHER_VERSION_NUMBER), CIPHER_XSTR(CIPHER_VERSION_QUALIFIER), CIPHER_XSTR(CIPHER_VERSION_BUILD));
-#else
-    char *version = sqlite3_mprintf("%s %s", CIPHER_XSTR(CIPHER_VERSION_NUMBER), CIPHER_XSTR(CIPHER_VERSION_BUILD));
-#endif
-    codec_vdbe_return_string(pParse, "cipher_version", version, P4_DYNAMIC);
+    codec_vdbe_return_string(pParse, "cipher_version", sqlcipher_version(), P4_DYNAMIC);
   }else
   if( sqlite3StrICmp(zLeft, "cipher")==0 ){
     if(ctx) {
@@ -21290,7 +21966,6 @@ int sqlcipher_codec_pragma(sqlite3* db, int iDb, Parse *pParse, const char *zLef
     } else {
       char *size = sqlite3_mprintf("%d", sqlcipher_get_default_plaintext_header_size());
       codec_vdbe_return_string(pParse, "cipher_default_plaintext_header_size", size, P4_DYNAMIC);
-      sqlite3_free(size);
     }
   }else
   if( sqlite3StrICmp(zLeft,"cipher_salt")==0 ){
@@ -21655,6 +22330,9 @@ static void* sqlite3Codec(void *iCtx, void *data, Pgno pgno, int mode) {
         memcpy(buffer, plaintext_header_sz ? pData : (void *) SQLITE_FILE_HEADER, offset);
 
       rc = sqlcipher_page_cipher(ctx, cctx, pgno, CIPHER_DECRYPT, page_sz - offset, pData + offset, (unsigned char*)buffer + offset);
+#ifdef SQLCIPHER_TEST
+      if(cipher_fail_next_decrypt) rc = SQLITE_ERROR;
+#endif
       if(rc != SQLITE_OK) { /* clear results of failed cipher operation and set error */
         sqlcipher_memset((unsigned char*) buffer+offset, 0, page_sz-offset);
         sqlcipher_codec_ctx_set_error(ctx, rc);
@@ -21677,9 +22355,13 @@ static void* sqlite3Codec(void *iCtx, void *data, Pgno pgno, int mode) {
         memcpy(buffer, plaintext_header_sz ? pData : kdf_salt, offset);
       }
       rc = sqlcipher_page_cipher(ctx, cctx, pgno, CIPHER_ENCRYPT, page_sz - offset, pData + offset, (unsigned char*)buffer + offset);
+#ifdef SQLCIPHER_TEST
+      if(cipher_fail_next_encrypt) rc = SQLITE_ERROR;
+#endif
       if(rc != SQLITE_OK) { /* clear results of failed cipher operation and set error */
         sqlcipher_memset((unsigned char*)buffer+offset, 0, page_sz-offset);
         sqlcipher_codec_ctx_set_error(ctx, rc);
+        return NULL;
       }
       return buffer; /* return persistent buffer data, pData remains intact */
       break;
@@ -21909,8 +22591,6 @@ SQLITE_PRIVATE void sqlite3CodecGetKey(sqlite3* db, int nDb, void **zKey, int *n
   }
 }
 
-#ifndef OMIT_EXPORT
-
 /*
  * Implementation of an "export" function that allows a caller
  * to duplicate the main database to an attached database. This is intended
@@ -21998,7 +22678,6 @@ void sqlcipher_exportFunc(sqlite3_context *context, int argc, sqlite3_value **ar
   int saved_nChange = db->nChange;      /* Saved value of db->nChange */
   int saved_nTotalChange = db->nTotalChange; /* Saved value of db->nTotalChange */
   u8 saved_mTrace = db->mTrace;        /* Saved value of db->mTrace */
-  int (*saved_xTrace)(u32,void*,void*,void*) = db->xTrace; /* Saved db->xTrace */
   int rc = SQLITE_OK;     /* Return code from service routines */
   char *zSql = NULL;         /* SQL statements */
   char *pzErrMsg = NULL;
@@ -22025,7 +22704,6 @@ void sqlcipher_exportFunc(sqlite3_context *context, int argc, sqlite3_value **ar
   db->flags |= SQLITE_WriteSchema | SQLITE_IgnoreChecks;
   db->mDbFlags |= DBFLAG_PreferBuiltin | DBFLAG_Vacuum;
   db->flags &= ~(u64)(SQLITE_ForeignKeys | SQLITE_ReverseOrder | SQLITE_Defensive | SQLITE_CountRows);
-  db->xTrace = 0;
   db->mTrace = 0;
 
   /* Query the schema of the main database. Create a mirror schema
@@ -22033,7 +22711,7 @@ void sqlcipher_exportFunc(sqlite3_context *context, int argc, sqlite3_value **ar
   */
   zSql = sqlite3_mprintf(
     "SELECT sql "
-    "  FROM %s.sqlcipher_master WHERE type='table' AND name!='sqlcipher_sequence'"
+    "  FROM %s.sqlite_master WHERE type='table' AND name!='sqlite_sequence'"
     "   AND rootpage>0"
   , sourceDb);
   rc = (zSql == NULL) ? SQLITE_NOMEM : sqlcipher_execExecSql(db, &pzErrMsg, zSql);
@@ -22042,7 +22720,7 @@ void sqlcipher_exportFunc(sqlite3_context *context, int argc, sqlite3_value **ar
 
   zSql = sqlite3_mprintf(
     "SELECT sql "
-    "  FROM %s.sqlcipher_master WHERE sql LIKE 'CREATE INDEX %%' "
+    "  FROM %s.sqlite_master WHERE sql LIKE 'CREATE INDEX %%' "
   , sourceDb);
   rc = (zSql == NULL) ? SQLITE_NOMEM : sqlcipher_execExecSql(db, &pzErrMsg, zSql);
   if( rc!=SQLITE_OK ) goto end_of_export;
@@ -22050,7 +22728,7 @@ void sqlcipher_exportFunc(sqlite3_context *context, int argc, sqlite3_value **ar
 
   zSql = sqlite3_mprintf(
     "SELECT sql "
-    "  FROM %s.sqlcipher_master WHERE sql LIKE 'CREATE UNIQUE INDEX %%'"
+    "  FROM %s.sqlite_master WHERE sql LIKE 'CREATE UNIQUE INDEX %%'"
   , sourceDb);
   rc = (zSql == NULL) ? SQLITE_NOMEM : sqlcipher_execExecSql(db, &pzErrMsg, zSql);
   if( rc!=SQLITE_OK ) goto end_of_export;
@@ -22063,8 +22741,8 @@ void sqlcipher_exportFunc(sqlite3_context *context, int argc, sqlite3_value **ar
   zSql = sqlite3_mprintf(
     "SELECT 'INSERT INTO %s.' || quote(name) "
     "|| ' SELECT * FROM %s.' || quote(name) || ';'"
-    "FROM %s.sqlcipher_master "
-    "WHERE type = 'table' AND name!='sqlcipher_sequence' "
+    "FROM %s.sqlite_master "
+    "WHERE type = 'table' AND name!='sqlite_sequence' "
     "  AND rootpage>0"
   , targetDb, sourceDb, sourceDb);
   rc = (zSql == NULL) ? SQLITE_NOMEM : sqlcipher_execExecSql(db, &pzErrMsg, zSql);
@@ -22076,7 +22754,7 @@ void sqlcipher_exportFunc(sqlite3_context *context, int argc, sqlite3_value **ar
   zSql = sqlite3_mprintf(
     "SELECT 'INSERT INTO %s.' || quote(name) "
     "|| ' SELECT * FROM %s.' || quote(name) || ';' "
-    "FROM %s.sqlcipher_master WHERE name=='sqlcipher_sequence';"
+    "FROM %s.sqlite_master WHERE name=='sqlite_sequence';"
   , targetDb, sourceDb, targetDb);
   rc = (zSql == NULL) ? SQLITE_NOMEM : sqlcipher_execExecSql(db, &pzErrMsg, zSql);
   if( rc!=SQLITE_OK ) goto end_of_export;
@@ -22088,9 +22766,9 @@ void sqlcipher_exportFunc(sqlite3_context *context, int argc, sqlite3_value **ar
   ** from the SQLITE_MASTER table.
   */
   zSql = sqlite3_mprintf(
-    "INSERT INTO %s.sqlcipher_master "
+    "INSERT INTO %s.sqlite_master "
     "  SELECT type, name, tbl_name, rootpage, sql"
-    "    FROM %s.sqlcipher_master"
+    "    FROM %s.sqlite_master"
     "   WHERE type='view' OR type='trigger'"
     "      OR (type='table' AND rootpage=0)"
   , targetDb, sourceDb);
@@ -22105,7 +22783,6 @@ end_of_export:
   db->mDbFlags = saved_mDbFlags;
   db->nChange = saved_nChange;
   db->nTotalChange = saved_nTotalChange;
-  db->xTrace = saved_xTrace;
   db->mTrace = saved_mTrace;
 
   if(zSql) sqlite3_free(zSql);
@@ -22119,11 +22796,8 @@ end_of_export:
     }
   }
 }
-
 #endif
-
 /* END SQLCIPHER */
-#endif
 
 /************** End of crypto.c **********************************************/
 /************** Begin file crypto_impl.c *************************************/
@@ -22369,13 +23043,13 @@ void sqlcipher_deactivate() {
    optimized out by the compiler.
    Note: As suggested by Joachim Schipper (joachim.schipper@fox-it.com)
 */
-void* sqlcipher_memset(void *v, unsigned char value, int len) {
-  int i = 0;
+void* sqlcipher_memset(void *v, unsigned char value, u64 len) {
+  u64 i = 0;
   volatile unsigned char *a = v;
 
   if (v == NULL) return v;
 
-  CODEC_TRACE_MEMORY("sqlcipher_memset: setting %p[0-%d]=%d)\n", a, len, value);
+  CODEC_TRACE_MEMORY("sqlcipher_memset: setting %p[0-%llu]=%d)\n", a, len, value);
   for(i = 0; i < len; i++) {
     a[i] = value;
   }
@@ -22386,9 +23060,9 @@ void* sqlcipher_memset(void *v, unsigned char value, int len) {
 /* constant time memory check tests every position of a memory segement
    matches a single value (i.e. the memory is all zeros)
    returns 0 if match, 1 of no match */
-int sqlcipher_ismemset(const void *v, unsigned char value, int len) {
+int sqlcipher_ismemset(const void *v, unsigned char value, u64 len) {
   const unsigned char *a = v;
-  int i = 0, result = 0;
+  u64 i = 0, result = 0;
 
   for(i = 0; i < len; i++) {
     result |= a[i] ^ value;
@@ -22410,7 +23084,7 @@ int sqlcipher_memcmp(const void *v0, const void *v1, int len) {
   return (result != 0);
 }
 
-void sqlcipher_mlock(void *ptr, int sz) {
+void sqlcipher_mlock(void *ptr, u64 sz) {
 #ifndef OMIT_MEMLOCK
 #if defined(__unix__) || defined(__APPLE__)
   int rc;
@@ -22437,7 +23111,7 @@ void sqlcipher_mlock(void *ptr, int sz) {
 #endif
 }
 
-void sqlcipher_munlock(void *ptr, int sz) {
+void sqlcipher_munlock(void *ptr, u64 sz) {
 #ifndef OMIT_MEMLOCK
 #if defined(__unix__) || defined(__APPLE__)
   int rc;
@@ -22472,8 +23146,8 @@ void sqlcipher_munlock(void *ptr, int sz) {
   * If sz is > 0, and not compiled with OMIT_MEMLOCK, system will attempt to unlock the
   * memory segment so it can be paged
   */
-void sqlcipher_free(void *ptr, int sz) {
-  CODEC_TRACE_MEMORY("sqlcipher_free: calling sqlcipher_memset(%p,0,%d)\n", ptr, sz);
+void sqlcipher_free(void *ptr, u64 sz) {
+  CODEC_TRACE_MEMORY("sqlcipher_free: calling sqlcipher_memset(%p,0,%llu)\n", ptr, sz);
   sqlcipher_memset(ptr, 0, sz);
   sqlcipher_munlock(ptr, sz);
   sqlite3_free(ptr);
@@ -22484,16 +23158,25 @@ void sqlcipher_free(void *ptr, int sz) {
   * reference counted and leak detection works. Unless compiled with OMIT_MEMLOCK
   * attempts to lock the memory pages so sensitive information won't be swapped
   */
-void* sqlcipher_malloc(int sz) {
+void* sqlcipher_malloc(u64 sz) {
   void *ptr;
-  CODEC_TRACE_MEMORY("sqlcipher_malloc: calling sqlite3Malloc(%d)\n", sz);
+  CODEC_TRACE_MEMORY("sqlcipher_malloc: calling sqlite3Malloc(%llu)\n", sz);
   ptr = sqlite3Malloc(sz);
-  CODEC_TRACE_MEMORY("sqlcipher_malloc: calling sqlcipher_memset(%p,0,%d)\n", ptr, sz);
+  CODEC_TRACE_MEMORY("sqlcipher_malloc: calling sqlcipher_memset(%p,0,%llu)\n", ptr, sz);
   sqlcipher_memset(ptr, 0, sz);
   sqlcipher_mlock(ptr, sz);
   return ptr;
 }
 
+char* sqlcipher_version() {
+#ifdef CIPHER_VERSION_QUALIFIER
+    char *version = sqlite3_mprintf("%s %s %s", CIPHER_XSTR(CIPHER_VERSION_NUMBER), CIPHER_XSTR(CIPHER_VERSION_QUALIFIER), CIPHER_XSTR(CIPHER_VERSION_BUILD));
+#else
+    char *version = sqlite3_mprintf("%s %s", CIPHER_XSTR(CIPHER_VERSION_NUMBER), CIPHER_XSTR(CIPHER_VERSION_BUILD));
+#endif
+    return version;
+}
+
 /**
   * Initialize new cipher_ctx struct. This function will allocate memory
   * for the cipher context and for the key
@@ -23398,6 +24081,9 @@ int sqlcipher_codec_ctx_integrity_check(codec_ctx *ctx, Parse *pParse, char *col
     int payload_sz = ctx->page_sz - ctx->reserve_sz + ctx->iv_sz;
     int read_sz = ctx->page_sz;
 
+    /* skip integrity check on PAGER_MJ_PGNO since it will have no valid content */
+    if(sqlite3pager_is_mj_pgno(ctx->pBt->pBt->pPager, page)) continue;
+
     if(page==1) {
       int page1_offset = ctx->plaintext_header_sz ? ctx->plaintext_header_sz : FILE_HEADER_SZ;
       read_sz = read_sz - page1_offset;
@@ -23539,7 +24225,7 @@ migrate:
   pDb = &(db->aDb[db->nDb-1]);
   pSrc = pDb->pBt;
 
-  nRes = sqlite3BtreeGetOptimalReserve(pSrc);
+  nRes = sqlite3BtreeGetRequestedReserve(pSrc);
   /* unset the BTS_PAGESIZE_FIXED flag to avoid SQLITE_READONLY */
   pDest->pBt->btsFlags &= ~BTS_PAGESIZE_FIXED;
   rc = sqlite3BtreeSetPageSize(pDest, default_page_size, nRes, 0);
@@ -23965,14 +24651,6 @@ static int sqlcipher_ltc_fips_status(void *ctx) {
   return 0;
 }
 
-static int sqlcipher_ltc_id(void *ctx) {
-  return 4658016;
-}
-
-static void* sqlcipher_ltc_status(void *ctx) {
-  return NULL;
-}
-
 int sqlcipher_ltc_setup(sqlcipher_provider *p) {
   p->activate = sqlcipher_ltc_activate;
   p->deactivate = sqlcipher_ltc_deactivate;
@@ -23991,8 +24669,6 @@ int sqlcipher_ltc_setup(sqlcipher_provider *p) {
   p->add_random = sqlcipher_ltc_add_random;
   p->fips_status = sqlcipher_ltc_fips_status;
   p->get_provider_version = sqlcipher_ltc_get_provider_version;
-  p->id = sqlcipher_ltc_id;
-  p->status = sqlcipher_ltc_status;
   return SQLITE_OK;
 }
 
@@ -24284,14 +24960,6 @@ static int sqlcipher_nss_fips_status(void *ctx) {
   return 0;
 }
 
-static int sqlcipher_nss_id(void *ctx) {
-  return 6342402;
-}
-
-static void* sqlcipher_nss_status(void *ctx) {
-  return NULL;
-}
-
 int sqlcipher_nss_setup(sqlcipher_provider *p) {
   p->activate = sqlcipher_nss_activate;
   p->deactivate = sqlcipher_nss_deactivate;
@@ -24310,8 +24978,6 @@ int sqlcipher_nss_setup(sqlcipher_provider *p) {
   p->add_random = sqlcipher_nss_add_random;
   p->fips_status = sqlcipher_nss_fips_status;
   p->get_provider_version = sqlcipher_nss_get_provider_version;
-  p->id = sqlcipher_nss_id;
-  p->status = sqlcipher_nss_status;
   return SQLITE_OK;
 }
 
@@ -24363,11 +25029,6 @@ int sqlcipher_nss_setup(sqlcipher_provider *p) {
 #include <openssl/hmac.h>
 #include <openssl/err.h>
 
-typedef struct {
-  EVP_CIPHER *evp_cipher;
-} openssl_ctx;
-
-static unsigned int openssl_external_init = 0;
 static unsigned int openssl_init_count = 0;
 
 #if (defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x10100000L) || (defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x20700000L)
@@ -24408,7 +25069,7 @@ static int sqlcipher_openssl_add_random(void *ctx, void *buffer, int length) {
   return SQLITE_OK;
 }
 
-#define OPENSSL_CIPHER "aes-256-cbc"
+#define OPENSSL_CIPHER EVP_aes_256_cbc()
 
 
 /* activate and initialize sqlcipher. Most importantly, this will automatically
@@ -24426,13 +25087,6 @@ static int sqlcipher_openssl_activate(void *ctx) {
   sqlite3_mutex_enter(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_ACTIVATE));
   CODEC_TRACE_MUTEX("sqlcipher_openssl_activate: entered SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
 
-  if(openssl_init_count == 0 && EVP_get_cipherbyname(OPENSSL_CIPHER) != NULL) {
-    /* if openssl has not yet been initialized by this library, but
-       a call to get_cipherbyname works, then the openssl library
-       has been initialized externally already. */
-    openssl_external_init = 1;
-  }
-
 #ifdef SQLCIPHER_FIPS
   if(!FIPS_mode()){
     if(!FIPS_mode_set(1)){
@@ -24449,13 +25103,6 @@ static int sqlcipher_openssl_activate(void *ctx) {
   }
 #endif
 
-  if(openssl_init_count == 0 && openssl_external_init == 0)  {
-    /* if the library was not externally initialized, then should be now */
-#if (defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x10100000L) || (defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x20700000L)
-    OpenSSL_add_all_algorithms();
-#endif
-  }
-
   openssl_init_count++;
   CODEC_TRACE_MUTEX("sqlcipher_openssl_activate: leaving SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
   sqlite3_mutex_leave(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_ACTIVATE));
@@ -24470,22 +25117,8 @@ static int sqlcipher_openssl_deactivate(void *ctx) {
   CODEC_TRACE_MUTEX("sqlcipher_openssl_deactivate: entering SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
   sqlite3_mutex_enter(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_ACTIVATE));
   CODEC_TRACE_MUTEX("sqlcipher_openssl_deactivate: entered SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
-  openssl_init_count--;
 
-  if(openssl_init_count == 0) {
-    if(openssl_external_init == 0) {
-    /* if OpenSSL hasn't be initialized externally, and the counter reaches zero
-       after it's decremented, release EVP memory
-       Note: this code will only be reached if OpensSSL_add_all_algorithms()
-       is called by SQLCipher internally. This should prevent SQLCipher from
-       "cleaning up" openssl when it was initialized externally by the program */
-#if (defined(OPENSSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER < 0x10100000L) || (defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x20700000L)
-      EVP_cleanup();
-#endif
-    } else {
-      openssl_external_init = 0;
-    }
-  }
+  openssl_init_count--;
 
   CODEC_TRACE_MUTEX("sqlcipher_openssl_deactivate: leaving SQLCIPHER_MUTEX_PROVIDER_ACTIVATE\n");
   sqlite3_mutex_leave(sqlcipher_mutex(SQLCIPHER_MUTEX_PROVIDER_ACTIVATE));
@@ -24590,7 +25223,7 @@ static int sqlcipher_openssl_cipher(void *ctx, int mode, unsigned char *key, int
   int tmp_csz, csz, rc = SQLITE_OK;
   EVP_CIPHER_CTX* ectx = EVP_CIPHER_CTX_new();
   if(ectx == NULL) goto error;
-  if(!EVP_CipherInit_ex(ectx, ((openssl_ctx *)ctx)->evp_cipher, NULL, NULL, NULL, mode)) goto error;
+  if(!EVP_CipherInit_ex(ectx, OPENSSL_CIPHER, NULL, NULL, NULL, mode)) goto error;
   if(!EVP_CIPHER_CTX_set_padding(ectx, 0)) goto error; /* no padding */
   if(!EVP_CipherInit_ex(ectx, NULL, NULL, key, iv, mode)) goto error;
   if(!EVP_CipherUpdate(ectx, out, &tmp_csz, in, in_sz)) goto error;
@@ -24609,19 +25242,19 @@ cleanup:
 }
 
 static const char* sqlcipher_openssl_get_cipher(void *ctx) {
-  return OBJ_nid2sn(EVP_CIPHER_nid(((openssl_ctx *)ctx)->evp_cipher));
+  return OBJ_nid2sn(EVP_CIPHER_nid(OPENSSL_CIPHER));
 }
 
 static int sqlcipher_openssl_get_key_sz(void *ctx) {
-  return EVP_CIPHER_key_length(((openssl_ctx *)ctx)->evp_cipher);
+  return EVP_CIPHER_key_length(OPENSSL_CIPHER);
 }
 
 static int sqlcipher_openssl_get_iv_sz(void *ctx) {
-  return EVP_CIPHER_iv_length(((openssl_ctx *)ctx)->evp_cipher);
+  return EVP_CIPHER_iv_length(OPENSSL_CIPHER);
 }
 
 static int sqlcipher_openssl_get_block_sz(void *ctx) {
-  return EVP_CIPHER_block_size(((openssl_ctx *)ctx)->evp_cipher);
+  return EVP_CIPHER_block_size(OPENSSL_CIPHER);
 }
 
 static int sqlcipher_openssl_get_hmac_sz(void *ctx, int algorithm) {
@@ -24641,21 +25274,11 @@ static int sqlcipher_openssl_get_hmac_sz(void *ctx, int algorithm) {
 }
 
 static int sqlcipher_openssl_ctx_init(void **ctx) {
-  openssl_ctx *o_ctx;
-
-  *ctx = sqlcipher_malloc(sizeof(openssl_ctx));
-  if(*ctx == NULL) return SQLITE_NOMEM;
-  sqlcipher_openssl_activate(*ctx);
-
-  o_ctx = (openssl_ctx *)*ctx;
-  o_ctx->evp_cipher = (EVP_CIPHER *) EVP_get_cipherbyname(OPENSSL_CIPHER);
-  return o_ctx->evp_cipher != NULL ? SQLITE_OK : SQLITE_ERROR;
+  return sqlcipher_openssl_activate(*ctx);
 }
 
 static int sqlcipher_openssl_ctx_free(void **ctx) {
-  sqlcipher_openssl_deactivate(*ctx);
-  sqlcipher_free(*ctx, sizeof(openssl_ctx));
-  return SQLITE_OK;
+  return sqlcipher_openssl_deactivate(NULL);
 }
 
 static int sqlcipher_openssl_fips_status(void *ctx) {
@@ -24666,14 +25289,6 @@ static int sqlcipher_openssl_fips_status(void *ctx) {
 #endif
 }
 
-static int sqlcipher_openssl_id(void *ctx) {
-  return 2678498;
-}
-
-static void* sqlcipher_openssl_status(void *ctx) {
-  return NULL;
-}
-
 int sqlcipher_openssl_setup(sqlcipher_provider *p) {
   p->activate = sqlcipher_openssl_activate;
   p->deactivate = sqlcipher_openssl_deactivate;
@@ -24692,8 +25307,6 @@ int sqlcipher_openssl_setup(sqlcipher_provider *p) {
   p->add_random = sqlcipher_openssl_add_random;
   p->fips_status = sqlcipher_openssl_fips_status;
   p->get_provider_version = sqlcipher_openssl_get_provider_version;
-  p->id = sqlcipher_openssl_id;
-  p->status = sqlcipher_openssl_status;
   return SQLITE_OK;
 }
 
@@ -24871,14 +25484,6 @@ static int sqlcipher_cc_fips_status(void *ctx) {
   return 0;
 }
 
-static int sqlcipher_cc_id(void *ctx) {
-  return 1633265;
-}
-
-static void* sqlcipher_cc_status(void *ctx) {
-  return NULL;
-}
-
 int sqlcipher_cc_setup(sqlcipher_provider *p) {
   p->random = sqlcipher_cc_random;
   p->get_provider_name = sqlcipher_cc_get_provider_name;
@@ -24895,8 +25500,6 @@ int sqlcipher_cc_setup(sqlcipher_provider *p) {
   p->add_random = sqlcipher_cc_add_random;
   p->fips_status = sqlcipher_cc_fips_status;
   p->get_provider_version = sqlcipher_cc_get_provider_version;
-  p->id = sqlcipher_cc_id;
-  p->status = sqlcipher_cc_status;
   return SQLITE_OK;
 }
 
@@ -24995,7 +25598,6 @@ SQLITE_PRIVATE const unsigned char sqlite3UpperToLower[] = {
 ** non-ASCII UTF character. Hence the test for whether or not a character is
 ** part of an identifier is 0x46.
 */
-#ifdef SQLITE_ASCII
 SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = {
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,  /* 00..07    ........ */
   0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,  /* 08..0f    ........ */
@@ -25033,7 +25635,6 @@ SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = {
   0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40,  /* f0..f7    ........ */
   0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40   /* f8..ff    ........ */
 };
-#endif
 
 /* EVIDENCE-OF: R-02982-34736 In order to maintain full backwards
 ** compatibility for legacy applications, the URI filename capability is
@@ -25050,11 +25651,13 @@ SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = {
 ** enabled.
 */
 #ifndef SQLITE_USE_URI
+/* BEGIN SQLCIPHER */
 # ifdef SQLITE_HAS_CODEC
 #  define SQLITE_USE_URI 1
 # else
 #  define SQLITE_USE_URI 0
 # endif
+/* END SQLCIPHER */
 #endif
 
 /* EVIDENCE-OF: R-38720-18127 The default setting is determined by the
@@ -25098,9 +25701,18 @@ SQLITE_PRIVATE const unsigned char sqlite3CtypeMap[256] = {
 ** changed as start-time using sqlite3_config(SQLITE_CONFIG_LOOKASIDE)
 ** or at run-time for an individual database connection using
 ** sqlite3_db_config(db, SQLITE_DBCONFIG_LOOKASIDE);
+**
+** With the two-size-lookaside enhancement, less lookaside is required.
+** The default configuration of 1200,40 actually provides 30 1200-byte slots
+** and 93 128-byte slots, which is more lookaside than is available
+** using the older 1200,100 configuration without two-size-lookaside.
 */
 #ifndef SQLITE_DEFAULT_LOOKASIDE
-# define SQLITE_DEFAULT_LOOKASIDE 1200,100
+# ifdef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+#   define SQLITE_DEFAULT_LOOKASIDE 1200,100  /* 120KB of memory */
+# else
+#   define SQLITE_DEFAULT_LOOKASIDE 1200,40   /* 48KB of memory */
+# endif
 #endif
 
 
@@ -25166,7 +25778,6 @@ SQLITE_PRIVATE SQLITE_WSD struct Sqlite3Config sqlite3Config = {
    0,                         /* xTestCallback */
 #endif
    0,                         /* bLocaltimeFault */
-   0,                         /* bInternalFunctions */
    0x7ffffffe,                /* iOnceResetThreshold */
    SQLITE_DEFAULT_SORTERREF_SIZE,   /* szSorterRef */
    0,                         /* iPrngSeed */
@@ -25209,6 +25820,11 @@ SQLITE_PRIVATE sqlite3_uint64 sqlite3NProfileCnt = 0;
 SQLITE_PRIVATE int sqlite3PendingByte = 0x40000000;
 #endif
 
+/*
+** Flags for select tracing and the ".selecttrace" macro of the CLI
+*/
+SQLITE_API u32 sqlite3_unsupported_selecttrace = 0;
+
 /* #include "opcodes.h" */
 /*
 ** Properties of opcodes.  The OPFLG_INITIALIZER macro is
@@ -25276,7 +25892,8 @@ SQLITE_PRIVATE const char sqlite3StrBINARY[] = "BINARY";
 ** "explain" P4 display logic is enabled.
 */
 #if !defined(SQLITE_OMIT_EXPLAIN) || !defined(NDEBUG) \
-     || defined(VDBE_PROFILE) || defined(SQLITE_DEBUG)
+     || defined(VDBE_PROFILE) || defined(SQLITE_DEBUG) \
+     || defined(SQLITE_ENABLE_BYTECODE_VTAB)
 # define VDBE_DISPLAY_P4 1
 #else
 # define VDBE_DISPLAY_P4 0
@@ -25333,7 +25950,7 @@ struct VdbeCursor {
   Bool seekHit:1;         /* See the OP_SeekHit and OP_IfNoHope opcodes */
   Btree *pBtx;            /* Separate file holding temporary table */
   i64 seqCount;           /* Sequence counter */
-  int *aAltMap;           /* Mapping from table to index column numbers */
+  u32 *aAltMap;           /* Mapping from table to index column numbers */
 
   /* Cached OP_Column parse information is only valid if cacheStatus matches
   ** Vdbe.cacheCtr.  Vdbe.cacheCtr will never take on the value of
@@ -25531,7 +26148,8 @@ struct sqlite3_value {
 ** True if Mem X is a NULL-nochng type.
 */
 #define MemNullNochng(X) \
-  ((X)->flags==(MEM_Null|MEM_Zero) && (X)->n==0 && (X)->u.nZero==0)
+  (((X)->flags&MEM_TypeMask)==(MEM_Null|MEM_Zero) \
+    && (X)->n==0 && (X)->u.nZero==0)
 
 /*
 ** Return true if a memory cell is not marked as invalid.  This macro
@@ -25662,9 +26280,9 @@ struct Vdbe {
   u8 errorAction;         /* Recovery action to do in case of an error */
   u8 minWriteFileFormat;  /* Minimum file format for writable database files */
   u8 prepFlags;           /* SQLITE_PREPARE_* flags */
+  u8 doingRerun;          /* True if rerunning after an auto-reprepare */
   bft expired:2;          /* 1: recompile VM immediately  2: when convenient */
   bft explain:2;          /* True if EXPLAIN present on SQL command */
-  bft doingRerun:1;       /* True if rerunning after an auto-reprepare */
   bft changeCntOn:1;      /* True to update the change-counter */
   bft runOnlyOnce:1;      /* Automatically expire on reset */
   bft usesStmtJournal:1;  /* True if uses a statement journal */
@@ -25727,7 +26345,8 @@ struct PreUpdate {
 SQLITE_PRIVATE void sqlite3VdbeError(Vdbe*, const char *, ...);
 SQLITE_PRIVATE void sqlite3VdbeFreeCursor(Vdbe *, VdbeCursor*);
 void sqliteVdbePopStack(Vdbe*,int);
-SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor**, int*);
+SQLITE_PRIVATE int SQLITE_NOINLINE sqlite3VdbeFinishMoveto(VdbeCursor*);
+SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor**, u32*);
 SQLITE_PRIVATE int sqlite3VdbeCursorRestore(VdbeCursor*);
 SQLITE_PRIVATE u32 sqlite3VdbeSerialTypeLen(u32);
 SQLITE_PRIVATE u8 sqlite3VdbeOneByteSerialTypeLen(u8);
@@ -25739,7 +26358,14 @@ int sqlite2BtreeKeyCompare(BtCursor *, const void *, int, int, int *);
 SQLITE_PRIVATE int sqlite3VdbeIdxKeyCompare(sqlite3*,VdbeCursor*,UnpackedRecord*,int*);
 SQLITE_PRIVATE int sqlite3VdbeIdxRowid(sqlite3*, BtCursor*, i64*);
 SQLITE_PRIVATE int sqlite3VdbeExec(Vdbe*);
-#ifndef SQLITE_OMIT_EXPLAIN
+#if !defined(SQLITE_OMIT_EXPLAIN) || defined(SQLITE_ENABLE_BYTECODE_VTAB)
+SQLITE_PRIVATE int sqlite3VdbeNextOpcode(Vdbe*,Mem*,int,int*,int*,Op**);
+SQLITE_PRIVATE char *sqlite3VdbeDisplayP4(sqlite3*,Op*);
+#endif
+#if defined(SQLITE_ENABLE_EXPLAIN_COMMENTS)
+SQLITE_PRIVATE char *sqlite3VdbeDisplayComment(sqlite3*,const Op*,const char*);
+#endif
+#if !defined(SQLITE_OMIT_EXPLAIN)
 SQLITE_PRIVATE int sqlite3VdbeList(Vdbe*);
 #endif
 SQLITE_PRIVATE int sqlite3VdbeHalt(Vdbe*);
@@ -25773,14 +26399,15 @@ SQLITE_PRIVATE int sqlite3VdbeBooleanValue(Mem*, int ifNull);
 SQLITE_PRIVATE void sqlite3VdbeIntegerAffinity(Mem*);
 SQLITE_PRIVATE int sqlite3VdbeMemRealify(Mem*);
 SQLITE_PRIVATE int sqlite3VdbeMemNumerify(Mem*);
-SQLITE_PRIVATE void sqlite3VdbeMemCast(Mem*,u8,u8);
+SQLITE_PRIVATE int sqlite3VdbeMemCast(Mem*,u8,u8);
 SQLITE_PRIVATE int sqlite3VdbeMemFromBtree(BtCursor*,u32,u32,Mem*);
+SQLITE_PRIVATE int sqlite3VdbeMemFromBtreeZeroOffset(BtCursor*,u32,Mem*);
 SQLITE_PRIVATE void sqlite3VdbeMemRelease(Mem *p);
 SQLITE_PRIVATE int sqlite3VdbeMemFinalize(Mem*, FuncDef*);
 #ifndef SQLITE_OMIT_WINDOWFUNC
 SQLITE_PRIVATE int sqlite3VdbeMemAggValue(Mem*, Mem*, FuncDef*);
 #endif
-#ifndef SQLITE_OMIT_EXPLAIN
+#if !defined(SQLITE_OMIT_EXPLAIN) || defined(SQLITE_ENABLE_BYTECODE_VTAB)
 SQLITE_PRIVATE const char *sqlite3OpcodeName(int);
 #endif
 SQLITE_PRIVATE int sqlite3VdbeMemGrow(Mem *pMem, int n, int preserve);
@@ -25839,7 +26466,7 @@ SQLITE_PRIVATE int sqlite3VdbeCheckFk(Vdbe *, int);
 
 #ifdef SQLITE_DEBUG
 SQLITE_PRIVATE   void sqlite3VdbePrintSql(Vdbe*);
-SQLITE_PRIVATE   void sqlite3VdbeMemPrettyPrint(Mem *pMem, char *zBuf);
+SQLITE_PRIVATE   void sqlite3VdbeMemPrettyPrint(Mem *pMem, StrAccum *pStr);
 #endif
 #ifndef SQLITE_OMIT_UTF16
 SQLITE_PRIVATE   int sqlite3VdbeMemTranslate(Mem*, u8);
@@ -26031,6 +26658,10 @@ static u32 countLookasideSlots(LookasideSlot *p){
 SQLITE_PRIVATE int sqlite3LookasideUsed(sqlite3 *db, int *pHighwater){
   u32 nInit = countLookasideSlots(db->lookaside.pInit);
   u32 nFree = countLookasideSlots(db->lookaside.pFree);
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+  nInit += countLookasideSlots(db->lookaside.pSmallInit);
+  nFree += countLookasideSlots(db->lookaside.pSmallFree);
+#endif /* SQLITE_OMIT_TWOSIZE_LOOKASIDE */
   if( pHighwater ) *pHighwater = db->lookaside.nSlot - nInit;
   return db->lookaside.nSlot - (nInit+nFree);
 }
@@ -26063,6 +26694,15 @@ SQLITE_API int sqlite3_db_status(
           db->lookaside.pInit = db->lookaside.pFree;
           db->lookaside.pFree = 0;
         }
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+        p = db->lookaside.pSmallFree;
+        if( p ){
+          while( p->pNext ) p = p->pNext;
+          p->pNext = db->lookaside.pSmallInit;
+          db->lookaside.pSmallInit = db->lookaside.pSmallFree;
+          db->lookaside.pSmallFree = 0;
+        }
+#endif
       }
       break;
     }
@@ -26182,7 +26822,7 @@ SQLITE_API int sqlite3_db_status(
     */
     case SQLITE_DBSTATUS_CACHE_SPILL:
       op = SQLITE_DBSTATUS_CACHE_WRITE+1;
-      /* Fall through into the next case */
+      /* no break */ deliberate_fall_through
     case SQLITE_DBSTATUS_CACHE_HIT:
     case SQLITE_DBSTATUS_CACHE_MISS:
     case SQLITE_DBSTATUS_CACHE_WRITE:{
@@ -26741,7 +27381,7 @@ static int osLocaltime(time_t *t, struct tm *pTm){
 #if !HAVE_LOCALTIME_R && !HAVE_LOCALTIME_S
   struct tm *pX;
 #if SQLITE_THREADSAFE>0
-  sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+  sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN);
 #endif
   sqlite3_mutex_enter(mutex);
   pX = localtime(t);
@@ -26847,12 +27487,12 @@ static const struct {
   double rLimit;      /* Maximum NNN value for this transform */
   double rXform;      /* Constant used for this transform */
 } aXformType[] = {
-  { 0, 6, "second", 464269060800.0, 86400000.0/(24.0*60.0*60.0) },
-  { 0, 6, "minute", 7737817680.0,   86400000.0/(24.0*60.0)      },
-  { 0, 4, "hour",   128963628.0,    86400000.0/24.0             },
-  { 0, 3, "day",    5373485.0,      86400000.0                  },
-  { 1, 5, "month",  176546.0,       30.0*86400000.0             },
-  { 2, 4, "year",   14713.0,        365.0*86400000.0            },
+  { 0, 6, "second", 464269060800.0, 1000.0         },
+  { 0, 6, "minute", 7737817680.0,   60000.0        },
+  { 0, 4, "hour",   128963628.0,    3600000.0      },
+  { 0, 3, "day",    5373485.0,      86400000.0     },
+  { 1, 5, "month",  176546.0,       2592000000.0   },
+  { 2, 4, "year",   14713.0,        31536000000.0  },
 };
 
 /*
@@ -26914,7 +27554,7 @@ static int parseModifier(
         r = p->s*1000.0 + 210866760000000.0;
         if( r>=0.0 && r<464269060800000.0 ){
           clearYMD_HMS_TZ(p);
-          p->iJD = (sqlite3_int64)r;
+          p->iJD = (sqlite3_int64)(r + 0.5);
           p->validJD = 1;
           p->rawS = 0;
           rc = 0;
@@ -27338,8 +27978,8 @@ static void strftimeFunc(
         case 'm':  sqlite3_snprintf(3, &z[j],"%02d",x.M); j+=2; break;
         case 'M':  sqlite3_snprintf(3, &z[j],"%02d",x.m); j+=2; break;
         case 's': {
-          sqlite3_snprintf(30,&z[j],"%lld",
-                           (i64)(x.iJD/1000 - 21086676*(i64)10000));
+          i64 iS = (i64)(x.iJD/1000 - 21086676*(i64)10000);
+          sqlite3Int64ToText(iS, &z[j]);
           j += sqlite3Strlen30(&z[j]);
           break;
         }
@@ -27437,10 +28077,10 @@ static void currentTimeFunc(
 #if HAVE_GMTIME_R
   pTm = gmtime_r(&t, &sNow);
 #else
-  sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
+  sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN));
   pTm = gmtime(&t);
   if( pTm ) memcpy(&sNow, pTm, sizeof(sNow));
-  sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
+  sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN));
 #endif
   if( pTm ){
     strftime(zBuf, 20, zFormat, &sNow);
@@ -27693,7 +28333,7 @@ SQLITE_PRIVATE int sqlite3OsOpen(
   ** down into the VFS layer.  Some SQLITE_OPEN_ flags (for example,
   ** SQLITE_OPEN_FULLMUTEX or SQLITE_OPEN_SHAREDCACHE) are blocked before
   ** reaching the VFS. */
-  rc = pVfs->xOpen(pVfs, zPath, pFile, flags & 0x87f7f, pFlagsOut);
+  rc = pVfs->xOpen(pVfs, zPath, pFile, flags & 0x1087f7f, pFlagsOut);
   assert( rc==SQLITE_OK || pFile->pMethods==0 );
   return rc;
 }
@@ -27831,7 +28471,7 @@ SQLITE_API sqlite3_vfs *sqlite3_vfs_find(const char *zVfs){
   if( rc ) return 0;
 #endif
 #if SQLITE_THREADSAFE
-  mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+  mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN);
 #endif
   sqlite3_mutex_enter(mutex);
   for(pVfs = vfsList; pVfs; pVfs=pVfs->pNext){
@@ -27846,7 +28486,7 @@ SQLITE_API sqlite3_vfs *sqlite3_vfs_find(const char *zVfs){
 ** Unlink a VFS from the linked list
 */
 static void vfsUnlink(sqlite3_vfs *pVfs){
-  assert( sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)) );
+  assert( sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN)) );
   if( pVfs==0 ){
     /* No-op */
   }else if( vfsList==pVfs ){
@@ -27877,7 +28517,7 @@ SQLITE_API int sqlite3_vfs_register(sqlite3_vfs *pVfs, int makeDflt){
   if( pVfs==0 ) return SQLITE_MISUSE_BKPT;
 #endif
 
-  MUTEX_LOGIC( mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
+  MUTEX_LOGIC( mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); )
   sqlite3_mutex_enter(mutex);
   vfsUnlink(pVfs);
   if( makeDflt || vfsList==0 ){
@@ -27901,7 +28541,7 @@ SQLITE_API int sqlite3_vfs_unregister(sqlite3_vfs *pVfs){
   int rc = sqlite3_initialize();
   if( rc ) return rc;
 #endif
-  MUTEX_LOGIC( mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
+  MUTEX_LOGIC( mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); )
   sqlite3_mutex_enter(mutex);
   vfsUnlink(pVfs);
   sqlite3_mutex_leave(mutex);
@@ -28737,7 +29377,7 @@ SQLITE_PRIVATE void sqlite3MemSetDefault(void){
 ** Set the "type" of an allocation.
 */
 SQLITE_PRIVATE void sqlite3MemdebugSetType(void *p, u8 eType){
-  if( p && sqlite3GlobalConfig.m.xMalloc==sqlite3MemMalloc ){
+  if( p && sqlite3GlobalConfig.m.xFree==sqlite3MemFree ){
     struct MemBlockHdr *pHdr;
     pHdr = sqlite3MemsysGetHeader(p);
     assert( pHdr->iForeGuard==FOREGUARD );
@@ -28756,7 +29396,7 @@ SQLITE_PRIVATE void sqlite3MemdebugSetType(void *p, u8 eType){
 */
 SQLITE_PRIVATE int sqlite3MemdebugHasType(void *p, u8 eType){
   int rc = 1;
-  if( p && sqlite3GlobalConfig.m.xMalloc==sqlite3MemMalloc ){
+  if( p && sqlite3GlobalConfig.m.xFree==sqlite3MemFree ){
     struct MemBlockHdr *pHdr;
     pHdr = sqlite3MemsysGetHeader(p);
     assert( pHdr->iForeGuard==FOREGUARD );         /* Allocation is valid */
@@ -28778,7 +29418,7 @@ SQLITE_PRIVATE int sqlite3MemdebugHasType(void *p, u8 eType){
 */
 SQLITE_PRIVATE int sqlite3MemdebugNoType(void *p, u8 eType){
   int rc = 1;
-  if( p && sqlite3GlobalConfig.m.xMalloc==sqlite3MemMalloc ){
+  if( p && sqlite3GlobalConfig.m.xFree==sqlite3MemFree ){
     struct MemBlockHdr *pHdr;
     pHdr = sqlite3MemsysGetHeader(p);
     assert( pHdr->iForeGuard==FOREGUARD );         /* Allocation is valid */
@@ -29007,16 +29647,16 @@ static SQLITE_WSD struct Mem3Global {
   /*
   ** The minimum amount of free space that we have seen.
   */
-  u32 mnMaster;
+  u32 mnKeyBlk;
 
   /*
-  ** iMaster is the index of the master chunk.  Most new allocations
-  ** occur off of this chunk.  szMaster is the size (in Mem3Blocks)
-  ** of the current master.  iMaster is 0 if there is not master chunk.
-  ** The master chunk is not in either the aiHash[] or aiSmall[].
+  ** iKeyBlk is the index of the key chunk.  Most new allocations
+  ** occur off of this chunk.  szKeyBlk is the size (in Mem3Blocks)
+  ** of the current key chunk.  iKeyBlk is 0 if there is no key chunk.
+  ** The key chunk is not in either the aiHash[] or aiSmall[].
   */
-  u32 iMaster;
-  u32 szMaster;
+  u32 iKeyBlk;
+  u32 szKeyBlk;
 
   /*
   ** Array of lists of free blocks according to the block size
@@ -29152,34 +29792,34 @@ static void *memsys3Checkout(u32 i, u32 nBlock){
 }
 
 /*
-** Carve a piece off of the end of the mem3.iMaster free chunk.
-** Return a pointer to the new allocation.  Or, if the master chunk
+** Carve a piece off of the end of the mem3.iKeyBlk free chunk.
+** Return a pointer to the new allocation.  Or, if the key chunk
 ** is not large enough, return 0.
 */
-static void *memsys3FromMaster(u32 nBlock){
+static void *memsys3FromKeyBlk(u32 nBlock){
   assert( sqlite3_mutex_held(mem3.mutex) );
-  assert( mem3.szMaster>=nBlock );
-  if( nBlock>=mem3.szMaster-1 ){
-    /* Use the entire master */
-    void *p = memsys3Checkout(mem3.iMaster, mem3.szMaster);
-    mem3.iMaster = 0;
-    mem3.szMaster = 0;
-    mem3.mnMaster = 0;
+  assert( mem3.szKeyBlk>=nBlock );
+  if( nBlock>=mem3.szKeyBlk-1 ){
+    /* Use the entire key chunk */
+    void *p = memsys3Checkout(mem3.iKeyBlk, mem3.szKeyBlk);
+    mem3.iKeyBlk = 0;
+    mem3.szKeyBlk = 0;
+    mem3.mnKeyBlk = 0;
     return p;
   }else{
-    /* Split the master block.  Return the tail. */
+    /* Split the key block.  Return the tail. */
     u32 newi, x;
-    newi = mem3.iMaster + mem3.szMaster - nBlock;
-    assert( newi > mem3.iMaster+1 );
-    mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.prevSize = nBlock;
-    mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.size4x |= 2;
+    newi = mem3.iKeyBlk + mem3.szKeyBlk - nBlock;
+    assert( newi > mem3.iKeyBlk+1 );
+    mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.prevSize = nBlock;
+    mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.size4x |= 2;
     mem3.aPool[newi-1].u.hdr.size4x = nBlock*4 + 1;
-    mem3.szMaster -= nBlock;
-    mem3.aPool[newi-1].u.hdr.prevSize = mem3.szMaster;
-    x = mem3.aPool[mem3.iMaster-1].u.hdr.size4x & 2;
-    mem3.aPool[mem3.iMaster-1].u.hdr.size4x = mem3.szMaster*4 | x;
-    if( mem3.szMaster < mem3.mnMaster ){
-      mem3.mnMaster = mem3.szMaster;
+    mem3.szKeyBlk -= nBlock;
+    mem3.aPool[newi-1].u.hdr.prevSize = mem3.szKeyBlk;
+    x = mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x & 2;
+    mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x = mem3.szKeyBlk*4 | x;
+    if( mem3.szKeyBlk < mem3.mnKeyBlk ){
+      mem3.mnKeyBlk = mem3.szKeyBlk;
     }
     return (void*)&mem3.aPool[newi];
   }
@@ -29193,13 +29833,13 @@ static void *memsys3FromMaster(u32 nBlock){
 ** This routine examines all entries on the given list and tries
 ** to coalesce each entries with adjacent free chunks.
 **
-** If it sees a chunk that is larger than mem3.iMaster, it replaces
-** the current mem3.iMaster with the new larger chunk.  In order for
-** this mem3.iMaster replacement to work, the master chunk must be
+** If it sees a chunk that is larger than mem3.iKeyBlk, it replaces
+** the current mem3.iKeyBlk with the new larger chunk.  In order for
+** this mem3.iKeyBlk replacement to work, the key chunk must be
 ** linked into the hash tables.  That is not the normal state of
-** affairs, of course.  The calling routine must link the master
+** affairs, of course.  The calling routine must link the key
 ** chunk before invoking this routine, then must unlink the (possibly
-** changed) master chunk once this routine has finished.
+** changed) key chunk once this routine has finished.
 */
 static void memsys3Merge(u32 *pRoot){
   u32 iNext, prev, size, i, x;
@@ -29226,9 +29866,9 @@ static void memsys3Merge(u32 *pRoot){
     }else{
       size /= 4;
     }
-    if( size>mem3.szMaster ){
-      mem3.iMaster = i;
-      mem3.szMaster = size;
+    if( size>mem3.szKeyBlk ){
+      mem3.iKeyBlk = i;
+      mem3.szKeyBlk = size;
     }
   }
 }
@@ -29277,26 +29917,26 @@ static void *memsys3MallocUnsafe(int nByte){
 
   /* STEP 2:
   ** Try to satisfy the allocation by carving a piece off of the end
-  ** of the master chunk.  This step usually works if step 1 fails.
+  ** of the key chunk.  This step usually works if step 1 fails.
   */
-  if( mem3.szMaster>=nBlock ){
-    return memsys3FromMaster(nBlock);
+  if( mem3.szKeyBlk>=nBlock ){
+    return memsys3FromKeyBlk(nBlock);
   }
 
 
   /* STEP 3:
   ** Loop through the entire memory pool.  Coalesce adjacent free
-  ** chunks.  Recompute the master chunk as the largest free chunk.
+  ** chunks.  Recompute the key chunk as the largest free chunk.
   ** Then try again to satisfy the allocation by carving a piece off
-  ** of the end of the master chunk.  This step happens very
+  ** of the end of the key chunk.  This step happens very
   ** rarely (we hope!)
   */
   for(toFree=nBlock*16; toFree<(mem3.nPool*16); toFree *= 2){
     memsys3OutOfMemory(toFree);
-    if( mem3.iMaster ){
-      memsys3Link(mem3.iMaster);
-      mem3.iMaster = 0;
-      mem3.szMaster = 0;
+    if( mem3.iKeyBlk ){
+      memsys3Link(mem3.iKeyBlk);
+      mem3.iKeyBlk = 0;
+      mem3.szKeyBlk = 0;
     }
     for(i=0; i<N_HASH; i++){
       memsys3Merge(&mem3.aiHash[i]);
@@ -29304,10 +29944,10 @@ static void *memsys3MallocUnsafe(int nByte){
     for(i=0; i<MX_SMALL-1; i++){
       memsys3Merge(&mem3.aiSmall[i]);
     }
-    if( mem3.szMaster ){
-      memsys3Unlink(mem3.iMaster);
-      if( mem3.szMaster>=nBlock ){
-        return memsys3FromMaster(nBlock);
+    if( mem3.szKeyBlk ){
+      memsys3Unlink(mem3.iKeyBlk);
+      if( mem3.szKeyBlk>=nBlock ){
+        return memsys3FromKeyBlk(nBlock);
       }
     }
   }
@@ -29337,23 +29977,23 @@ static void memsys3FreeUnsafe(void *pOld){
   mem3.aPool[i+size-1].u.hdr.size4x &= ~2;
   memsys3Link(i);
 
-  /* Try to expand the master using the newly freed chunk */
-  if( mem3.iMaster ){
-    while( (mem3.aPool[mem3.iMaster-1].u.hdr.size4x&2)==0 ){
-      size = mem3.aPool[mem3.iMaster-1].u.hdr.prevSize;
-      mem3.iMaster -= size;
-      mem3.szMaster += size;
-      memsys3Unlink(mem3.iMaster);
-      x = mem3.aPool[mem3.iMaster-1].u.hdr.size4x & 2;
-      mem3.aPool[mem3.iMaster-1].u.hdr.size4x = mem3.szMaster*4 | x;
-      mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.prevSize = mem3.szMaster;
+  /* Try to expand the key using the newly freed chunk */
+  if( mem3.iKeyBlk ){
+    while( (mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x&2)==0 ){
+      size = mem3.aPool[mem3.iKeyBlk-1].u.hdr.prevSize;
+      mem3.iKeyBlk -= size;
+      mem3.szKeyBlk += size;
+      memsys3Unlink(mem3.iKeyBlk);
+      x = mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x & 2;
+      mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x = mem3.szKeyBlk*4 | x;
+      mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.prevSize = mem3.szKeyBlk;
     }
-    x = mem3.aPool[mem3.iMaster-1].u.hdr.size4x & 2;
-    while( (mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.size4x&1)==0 ){
-      memsys3Unlink(mem3.iMaster+mem3.szMaster);
-      mem3.szMaster += mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.size4x/4;
-      mem3.aPool[mem3.iMaster-1].u.hdr.size4x = mem3.szMaster*4 | x;
-      mem3.aPool[mem3.iMaster+mem3.szMaster-1].u.hdr.prevSize = mem3.szMaster;
+    x = mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x & 2;
+    while( (mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.size4x&1)==0 ){
+      memsys3Unlink(mem3.iKeyBlk+mem3.szKeyBlk);
+      mem3.szKeyBlk += mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.size4x/4;
+      mem3.aPool[mem3.iKeyBlk-1].u.hdr.size4x = mem3.szKeyBlk*4 | x;
+      mem3.aPool[mem3.iKeyBlk+mem3.szKeyBlk-1].u.hdr.prevSize = mem3.szKeyBlk;
     }
   }
 }
@@ -29449,11 +30089,11 @@ static int memsys3Init(void *NotUsed){
   mem3.aPool = (Mem3Block *)sqlite3GlobalConfig.pHeap;
   mem3.nPool = (sqlite3GlobalConfig.nHeap / sizeof(Mem3Block)) - 2;
 
-  /* Initialize the master block. */
-  mem3.szMaster = mem3.nPool;
-  mem3.mnMaster = mem3.szMaster;
-  mem3.iMaster = 1;
-  mem3.aPool[0].u.hdr.size4x = (mem3.szMaster<<2) + 2;
+  /* Initialize the key block. */
+  mem3.szKeyBlk = mem3.nPool;
+  mem3.mnKeyBlk = mem3.szKeyBlk;
+  mem3.iKeyBlk = 1;
+  mem3.aPool[0].u.hdr.size4x = (mem3.szKeyBlk<<2) + 2;
   mem3.aPool[mem3.nPool].u.hdr.prevSize = mem3.nPool;
   mem3.aPool[mem3.nPool].u.hdr.size4x = 1;
 
@@ -29513,7 +30153,7 @@ SQLITE_PRIVATE void sqlite3Memsys3Dump(const char *zFilename){
       fprintf(out, "%p %6d bytes checked out\n", &mem3.aPool[i], (size/4)*8-8);
     }else{
       fprintf(out, "%p %6d bytes free%s\n", &mem3.aPool[i], (size/4)*8-8,
-                  i==mem3.iMaster ? " **master**" : "");
+                  i==mem3.iKeyBlk ? " **key**" : "");
     }
   }
   for(i=0; i<MX_SMALL-1; i++){
@@ -29534,9 +30174,9 @@ SQLITE_PRIVATE void sqlite3Memsys3Dump(const char *zFilename){
     }
     fprintf(out, "\n");
   }
-  fprintf(out, "master=%d\n", mem3.iMaster);
-  fprintf(out, "nowUsed=%d\n", mem3.nPool*8 - mem3.szMaster*8);
-  fprintf(out, "mxUsed=%d\n", mem3.nPool*8 - mem3.mnMaster*8);
+  fprintf(out, "key=%d\n", mem3.iKeyBlk);
+  fprintf(out, "nowUsed=%d\n", mem3.nPool*8 - mem3.szKeyBlk*8);
+  fprintf(out, "mxUsed=%d\n", mem3.nPool*8 - mem3.mnKeyBlk*8);
   sqlite3_mutex_leave(mem3.mutex);
   if( out==stdout ){
     fflush(stdout);
@@ -30412,6 +31052,7 @@ SQLITE_PRIVATE int sqlite3MutexInit(void){
   GLOBAL(int, mutexIsInit) = 1;
 #endif
 
+  sqlite3MemoryBarrier();
   return rc;
 }
 
@@ -30851,7 +31492,7 @@ static int pthreadMutexEnd(void){ return SQLITE_OK; }
 ** <ul>
 ** <li>  SQLITE_MUTEX_FAST
 ** <li>  SQLITE_MUTEX_RECURSIVE
-** <li>  SQLITE_MUTEX_STATIC_MASTER
+** <li>  SQLITE_MUTEX_STATIC_MAIN
 ** <li>  SQLITE_MUTEX_STATIC_MEM
 ** <li>  SQLITE_MUTEX_STATIC_OPEN
 ** <li>  SQLITE_MUTEX_STATIC_PRNG
@@ -31211,7 +31852,7 @@ SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){
 ******************************************************************************
 **
 ** This file contains inline asm code for retrieving "high-performance"
-** counters for x86 class CPUs.
+** counters for x86 and x86_64 class CPUs.
 */
 #ifndef SQLITE_HWTIME_H
 #define SQLITE_HWTIME_H
@@ -31222,8 +31863,9 @@ SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){
 ** processor and returns that value.  This can be used for high-res
 ** profiling.
 */
-#if (defined(__GNUC__) || defined(_MSC_VER)) && \
-      (defined(i386) || defined(__i386__) || defined(_M_IX86))
+#if !defined(__STRICT_ANSI__) && \
+    (defined(__GNUC__) || defined(_MSC_VER)) && \
+    (defined(i386) || defined(__i386__) || defined(_M_IX86))
 
   #if defined(__GNUC__)
 
@@ -31244,7 +31886,7 @@ SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){
 
   #endif
 
-#elif (defined(__GNUC__) && defined(__x86_64__))
+#elif !defined(__STRICT_ANSI__) && (defined(__GNUC__) && defined(__x86_64__))
 
   __inline__ sqlite_uint64 sqlite3Hwtime(void){
       unsigned long val;
@@ -31252,7 +31894,7 @@ SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){
       return val;
   }
 
-#elif (defined(__GNUC__) && defined(__ppc__))
+#elif !defined(__STRICT_ANSI__) && (defined(__GNUC__) && defined(__ppc__))
 
   __inline__ sqlite_uint64 sqlite3Hwtime(void){
       unsigned long long retval;
@@ -31269,14 +31911,13 @@ SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3DefaultMutex(void){
 
 #else
 
-  #error Need implementation of sqlite3Hwtime() for your platform.
-
   /*
-  ** To compile without implementing sqlite3Hwtime() for your platform,
-  ** you can remove the above #error and use the following
-  ** stub function.  You will lose timing support for many
-  ** of the debugging and testing utilities, but it should at
-  ** least compile and run.
+  ** asm() is needed for hardware timing support.  Without asm(),
+  ** disable the sqlite3Hwtime() routine.
+  **
+  ** sqlite3Hwtime() is only used for some obscure debugging
+  ** and analysis configurations, not in any deliverable, so this
+  ** should not be a great loss.
   */
 SQLITE_PRIVATE   sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); }
 
@@ -31597,7 +32238,7 @@ static int winMutexEnd(void){
 ** <ul>
 ** <li>  SQLITE_MUTEX_FAST
 ** <li>  SQLITE_MUTEX_RECURSIVE
-** <li>  SQLITE_MUTEX_STATIC_MASTER
+** <li>  SQLITE_MUTEX_STATIC_MAIN
 ** <li>  SQLITE_MUTEX_STATIC_MEM
 ** <li>  SQLITE_MUTEX_STATIC_OPEN
 ** <li>  SQLITE_MUTEX_STATIC_PRNG
@@ -31861,18 +32502,26 @@ SQLITE_API int sqlite3_release_memory(int n){
 }
 
 /*
+** Default value of the hard heap limit.  0 means "no limit".
+*/
+#ifndef SQLITE_MAX_MEMORY
+# define SQLITE_MAX_MEMORY 0
+#endif
+
+/*
 ** State information local to the memory allocation subsystem.
 */
 static SQLITE_WSD struct Mem0Global {
   sqlite3_mutex *mutex;         /* Mutex to serialize access */
   sqlite3_int64 alarmThreshold; /* The soft heap limit */
+  sqlite3_int64 hardLimit;      /* The hard upper bound on memory */
 
   /*
   ** True if heap is nearly "full" where "full" is defined by the
   ** sqlite3_soft_heap_limit() setting.
   */
   int nearlyFull;
-} mem0 = { 0, 0, 0 };
+} mem0 = { 0, SQLITE_MAX_MEMORY, SQLITE_MAX_MEMORY, 0 };
 
 #define mem0 GLOBAL(struct Mem0Global, mem0)
 
@@ -31902,8 +32551,15 @@ SQLITE_API int sqlite3_memory_alarm(
 #endif
 
 /*
-** Set the soft heap-size limit for the library. Passing a zero or
-** negative value indicates no limit.
+** Set the soft heap-size limit for the library.  An argument of
+** zero disables the limit.  A negative argument is a no-op used to
+** obtain the return value.
+**
+** The return value is the value of the heap limit just before this
+** interface was called.
+**
+** If the hard heap limit is enabled, then the soft heap limit cannot
+** be disabled nor raised above the hard heap limit.
 */
 SQLITE_API sqlite3_int64 sqlite3_soft_heap_limit64(sqlite3_int64 n){
   sqlite3_int64 priorLimit;
@@ -31919,9 +32575,12 @@ SQLITE_API sqlite3_int64 sqlite3_soft_heap_limit64(sqlite3_int64 n){
     sqlite3_mutex_leave(mem0.mutex);
     return priorLimit;
   }
+  if( mem0.hardLimit>0 && (n>mem0.hardLimit || n==0) ){
+    n = mem0.hardLimit;
+  }
   mem0.alarmThreshold = n;
   nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED);
-  mem0.nearlyFull = (n>0 && n<=nUsed);
+  AtomicStore(&mem0.nearlyFull, n>0 && n<=nUsed);
   sqlite3_mutex_leave(mem0.mutex);
   excess = sqlite3_memory_used() - n;
   if( excess>0 ) sqlite3_release_memory((int)(excess & 0x7fffffff));
@@ -31933,6 +32592,37 @@ SQLITE_API void sqlite3_soft_heap_limit(int n){
 }
 
 /*
+** Set the hard heap-size limit for the library. An argument of zero
+** disables the hard heap limit.  A negative argument is a no-op used
+** to obtain the return value without affecting the hard heap limit.
+**
+** The return value is the value of the hard heap limit just prior to
+** calling this interface.
+**
+** Setting the hard heap limit will also activate the soft heap limit
+** and constrain the soft heap limit to be no more than the hard heap
+** limit.
+*/
+SQLITE_API sqlite3_int64 sqlite3_hard_heap_limit64(sqlite3_int64 n){
+  sqlite3_int64 priorLimit;
+#ifndef SQLITE_OMIT_AUTOINIT
+  int rc = sqlite3_initialize();
+  if( rc ) return -1;
+#endif
+  sqlite3_mutex_enter(mem0.mutex);
+  priorLimit = mem0.hardLimit;
+  if( n>=0 ){
+    mem0.hardLimit = n;
+    if( n<mem0.alarmThreshold || mem0.alarmThreshold==0 ){
+      mem0.alarmThreshold = n;
+    }
+  }
+  sqlite3_mutex_leave(mem0.mutex);
+  return priorLimit;
+}
+
+
+/*
 ** Initialize the memory allocation subsystem.
 */
 SQLITE_PRIVATE int sqlite3MallocInit(void){
@@ -31969,7 +32659,7 @@ SQLITE_PRIVATE int sqlite3MallocInit(void){
 ** sqlite3_soft_heap_limit().
 */
 SQLITE_PRIVATE int sqlite3HeapNearlyFull(void){
-  return mem0.nearlyFull;
+  return AtomicLoad(&mem0.nearlyFull);
 }
 
 /*
@@ -32029,21 +32719,21 @@ static void mallocWithAlarm(int n, void **pp){
   ** following xRoundup() call. */
   nFull = sqlite3GlobalConfig.m.xRoundup(n);
 
-#ifdef SQLITE_MAX_MEMORY
-  if( sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED)+nFull>SQLITE_MAX_MEMORY ){
-    *pp = 0;
-    return;
-  }
-#endif
-
   sqlite3StatusHighwater(SQLITE_STATUS_MALLOC_SIZE, n);
   if( mem0.alarmThreshold>0 ){
     sqlite3_int64 nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED);
     if( nUsed >= mem0.alarmThreshold - nFull ){
-      mem0.nearlyFull = 1;
+      AtomicStore(&mem0.nearlyFull, 1);
       sqlite3MallocAlarm(nFull);
+      if( mem0.hardLimit ){
+        nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED);
+        if( nUsed >= mem0.hardLimit - nFull ){
+          *pp = 0;
+          return;
+        }
+      }
     }else{
-      mem0.nearlyFull = 0;
+      AtomicStore(&mem0.nearlyFull, 0);
     }
   }
   p = sqlite3GlobalConfig.m.xMalloc(nFull);
@@ -32122,10 +32812,17 @@ SQLITE_PRIVATE int sqlite3MallocSize(void *p){
   assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) );
   return sqlite3GlobalConfig.m.xSize(p);
 }
+static int lookasideMallocSize(sqlite3 *db, void *p){
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+  return p<db->lookaside.pMiddle ? db->lookaside.szTrue : LOOKASIDE_SMALL;
+#else
+  return db->lookaside.szTrue;
+#endif
+}
 SQLITE_PRIVATE int sqlite3DbMallocSize(sqlite3 *db, void *p){
   assert( p!=0 );
-  if( db==0 || !isLookaside(db,p) ){
 #ifdef SQLITE_DEBUG
+  if( db==0 || !isLookaside(db,p) ){
     if( db==0 ){
       assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) );
       assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) );
@@ -32133,12 +32830,23 @@ SQLITE_PRIVATE int sqlite3DbMallocSize(sqlite3 *db, void *p){
       assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
       assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
     }
+  }
 #endif
-    return sqlite3GlobalConfig.m.xSize(p);
-  }else{
-    assert( sqlite3_mutex_held(db->mutex) );
-    return db->lookaside.sz;
+  if( db ){
+    if( ((uptr)p)<(uptr)(db->lookaside.pEnd) ){
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+      if( ((uptr)p)>=(uptr)(db->lookaside.pMiddle) ){
+        assert( sqlite3_mutex_held(db->mutex) );
+        return LOOKASIDE_SMALL;
+      }
+#endif
+      if( ((uptr)p)>=(uptr)(db->lookaside.pStart) ){
+        assert( sqlite3_mutex_held(db->mutex) );
+        return db->lookaside.szTrue;
+      }
+    }
   }
+  return sqlite3GlobalConfig.m.xSize(p);
 }
 SQLITE_API sqlite3_uint64 sqlite3_msize(void *p){
   assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) );
@@ -32185,15 +32893,27 @@ SQLITE_PRIVATE void sqlite3DbFreeNN(sqlite3 *db, void *p){
       measureAllocationSize(db, p);
       return;
     }
-    if( isLookaside(db, p) ){
-      LookasideSlot *pBuf = (LookasideSlot*)p;
+    if( ((uptr)p)<(uptr)(db->lookaside.pEnd) ){
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+      if( ((uptr)p)>=(uptr)(db->lookaside.pMiddle) ){
+        LookasideSlot *pBuf = (LookasideSlot*)p;
 #ifdef SQLITE_DEBUG
-      /* Trash all content in the buffer being freed */
-      memset(p, 0xaa, db->lookaside.sz);
+        memset(p, 0xaa, LOOKASIDE_SMALL);  /* Trash freed content */
 #endif
-      pBuf->pNext = db->lookaside.pFree;
-      db->lookaside.pFree = pBuf;
-      return;
+        pBuf->pNext = db->lookaside.pSmallFree;
+        db->lookaside.pSmallFree = pBuf;
+        return;
+      }
+#endif /* SQLITE_OMIT_TWOSIZE_LOOKASIDE */
+      if( ((uptr)p)>=(uptr)(db->lookaside.pStart) ){
+        LookasideSlot *pBuf = (LookasideSlot*)p;
+#ifdef SQLITE_DEBUG
+        memset(p, 0xaa, db->lookaside.szTrue);  /* Trash freed content */
+#endif
+        pBuf->pNext = db->lookaside.pFree;
+        db->lookaside.pFree = pBuf;
+        return;
+      }
     }
   }
   assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
@@ -32242,10 +32962,12 @@ SQLITE_PRIVATE void *sqlite3Realloc(void *pOld, u64 nBytes){
       sqlite3MallocAlarm(nDiff);
     }
     pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew);
+#ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
     if( pNew==0 && mem0.alarmThreshold>0 ){
       sqlite3MallocAlarm((int)nBytes);
       pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew);
     }
+#endif
     if( pNew ){
       nNew = sqlite3MallocSize(pNew);
       sqlite3StatusUp(SQLITE_STATUS_MEMORY_USED, nNew-nOld);
@@ -32349,23 +33071,37 @@ SQLITE_PRIVATE void *sqlite3DbMallocRawNN(sqlite3 *db, u64 n){
   assert( db!=0 );
   assert( sqlite3_mutex_held(db->mutex) );
   assert( db->pnBytesFreed==0 );
-  if( db->lookaside.bDisable==0 ){
-    assert( db->mallocFailed==0 );
-    if( n>db->lookaside.sz ){
+  if( n>db->lookaside.sz ){
+    if( !db->lookaside.bDisable ){
       db->lookaside.anStat[1]++;
-    }else if( (pBuf = db->lookaside.pFree)!=0 ){
-      db->lookaside.pFree = pBuf->pNext;
+    }else if( db->mallocFailed ){
+      return 0;
+    }
+    return dbMallocRawFinish(db, n);
+  }
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+  if( n<=LOOKASIDE_SMALL ){
+    if( (pBuf = db->lookaside.pSmallFree)!=0 ){
+      db->lookaside.pSmallFree = pBuf->pNext;
       db->lookaside.anStat[0]++;
       return (void*)pBuf;
-    }else if( (pBuf = db->lookaside.pInit)!=0 ){
-      db->lookaside.pInit = pBuf->pNext;
+    }else if( (pBuf = db->lookaside.pSmallInit)!=0 ){
+      db->lookaside.pSmallInit = pBuf->pNext;
       db->lookaside.anStat[0]++;
       return (void*)pBuf;
-    }else{
-      db->lookaside.anStat[2]++;
     }
-  }else if( db->mallocFailed ){
-    return 0;
+  }
+#endif
+  if( (pBuf = db->lookaside.pFree)!=0 ){
+    db->lookaside.pFree = pBuf->pNext;
+    db->lookaside.anStat[0]++;
+    return (void*)pBuf;
+  }else if( (pBuf = db->lookaside.pInit)!=0 ){
+    db->lookaside.pInit = pBuf->pNext;
+    db->lookaside.anStat[0]++;
+    return (void*)pBuf;
+  }else{
+    db->lookaside.anStat[2]++;
   }
 #else
   assert( db!=0 );
@@ -32389,7 +33125,16 @@ SQLITE_PRIVATE void *sqlite3DbRealloc(sqlite3 *db, void *p, u64 n){
   assert( db!=0 );
   if( p==0 ) return sqlite3DbMallocRawNN(db, n);
   assert( sqlite3_mutex_held(db->mutex) );
-  if( isLookaside(db,p) && n<=db->lookaside.sz ) return p;
+  if( ((uptr)p)<(uptr)db->lookaside.pEnd ){
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+    if( ((uptr)p)>=(uptr)db->lookaside.pMiddle ){
+      if( n<=LOOKASIDE_SMALL ) return p;
+    }else
+#endif
+    if( ((uptr)p)>=(uptr)db->lookaside.pStart ){
+      if( n<=db->lookaside.szTrue ) return p;
+    }
+  }
   return dbReallocFinish(db, p, n);
 }
 static SQLITE_NOINLINE void *dbReallocFinish(sqlite3 *db, void *p, u64 n){
@@ -32400,14 +33145,14 @@ static SQLITE_NOINLINE void *dbReallocFinish(sqlite3 *db, void *p, u64 n){
     if( isLookaside(db, p) ){
       pNew = sqlite3DbMallocRawNN(db, n);
       if( pNew ){
-        memcpy(pNew, p, db->lookaside.sz);
+        memcpy(pNew, p, lookasideMallocSize(db, p));
         sqlite3DbFree(db, p);
       }
     }else{
       assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
       assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) );
       sqlite3MemdebugSetType(p, MEMTYPE_HEAP);
-      pNew = sqlite3_realloc64(p, n);
+      pNew = sqlite3Realloc(p, n);
       if( !pNew ){
         sqlite3OomFault(db);
       }
@@ -32454,11 +33199,9 @@ SQLITE_PRIVATE char *sqlite3DbStrDup(sqlite3 *db, const char *z){
 SQLITE_PRIVATE char *sqlite3DbStrNDup(sqlite3 *db, const char *z, u64 n){
   char *zNew;
   assert( db!=0 );
-  if( z==0 ){
-    return 0;
-  }
+  assert( z!=0 || n==0 );
   assert( (n&0x7fffffff)==n );
-  zNew = sqlite3DbMallocRawNN(db, n+1);
+  zNew = z ? sqlite3DbMallocRawNN(db, n+1) : 0;
   if( zNew ){
     memcpy(zNew, z, (size_t)n);
     zNew[n] = 0;
@@ -32497,9 +33240,9 @@ SQLITE_PRIVATE void sqlite3OomFault(sqlite3 *db){
   if( db->mallocFailed==0 && db->bBenignMalloc==0 ){
     db->mallocFailed = 1;
     if( db->nVdbeExec>0 ){
-      db->u1.isInterrupted = 1;
+      AtomicStore(&db->u1.isInterrupted, 1);
     }
-    db->lookaside.bDisable++;
+    DisableLookaside;
     if( db->pParse ){
       db->pParse->rc = SQLITE_NOMEM_BKPT;
     }
@@ -32516,9 +33259,9 @@ SQLITE_PRIVATE void sqlite3OomFault(sqlite3 *db){
 SQLITE_PRIVATE void sqlite3OomClear(sqlite3 *db){
   if( db->mallocFailed && db->nVdbeExec==0 ){
     db->mallocFailed = 0;
-    db->u1.isInterrupted = 0;
+    AtomicStore(&db->u1.isInterrupted, 0);
     assert( db->lookaside.bDisable>0 );
-    db->lookaside.bDisable--;
+    EnableLookaside;
   }
 }
 
@@ -32755,6 +33498,13 @@ static char *printfTempBuf(sqlite3_str *pAccum, sqlite3_int64 n){
 #define etBUFSIZE SQLITE_PRINT_BUF_SIZE  /* Size of the output buffer */
 
 /*
+** Hard limit on the precision of floating-point conversions.
+*/
+#ifndef SQLITE_PRINTF_PRECISION_LIMIT
+# define SQLITE_FP_PRECISION_LIMIT 100000000
+#endif
+
+/*
 ** Render a string given by "fmt" into the StrAccum object.
 */
 SQLITE_API void sqlite3_str_vappendf(
@@ -32954,15 +33704,17 @@ SQLITE_API void sqlite3_str_vappendf(
     **   xtype                       The class of the conversion.
     **   infop                       Pointer to the appropriate info struct.
     */
+    assert( width>=0 );
+    assert( precision>=(-1) );
     switch( xtype ){
       case etPOINTER:
         flag_long = sizeof(char*)==sizeof(i64) ? 2 :
                      sizeof(char*)==sizeof(long int) ? 1 : 0;
-        /* Fall through into the next case */
+        /* no break */ deliberate_fall_through
       case etORDINAL:
       case etRADIX:
         cThousand = 0;
-        /* Fall through into the next case */
+        /* no break */ deliberate_fall_through
       case etDECIMAL:
         if( infop->flags & FLAG_SIGNED ){
           i64 v;
@@ -33075,6 +33827,11 @@ SQLITE_API void sqlite3_str_vappendf(
         length = 0;
 #else
         if( precision<0 ) precision = 6;         /* Set default precision */
+#ifdef SQLITE_FP_PRECISION_LIMIT
+        if( precision>SQLITE_FP_PRECISION_LIMIT ){
+          precision = SQLITE_FP_PRECISION_LIMIT;
+        }
+#endif
         if( realvalue<0.0 ){
           realvalue = -realvalue;
           prefix = '-';
@@ -33357,7 +34114,7 @@ SQLITE_API void sqlite3_str_vappendf(
         }
         isnull = escarg==0;
         if( isnull ) escarg = (xtype==etSQLESCAPE2 ? "NULL" : "(NULL)");
-        /* For %q, %Q, and %w, the precision is the number of byte (or
+        /* For %q, %Q, and %w, the precision is the number of bytes (or
         ** characters if the ! flags is present) to use from the input.
         ** Because of the extra quoting characters inserted, the number
         ** of output characters may be larger than the precision.
@@ -33484,7 +34241,7 @@ static int sqlite3StrAccumEnlarge(StrAccum *p, int N){
     if( p->db ){
       zNew = sqlite3DbRealloc(p->db, zOld, p->nAlloc);
     }else{
-      zNew = sqlite3_realloc64(zOld, p->nAlloc);
+      zNew = sqlite3Realloc(zOld, p->nAlloc);
     }
     if( zNew ){
       assert( p->zText!=0 || p->nChar==0 );
@@ -33826,7 +34583,7 @@ SQLITE_API void sqlite3_log(int iErrCode, const char *zFormat, ...){
 SQLITE_PRIVATE void sqlite3DebugPrintf(const char *zFormat, ...){
   va_list ap;
   StrAccum acc;
-  char zBuf[500];
+  char zBuf[SQLITE_PRINT_BUF_SIZE*10];
   sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0);
   va_start(ap,zFormat);
   sqlite3_str_vappendf(&acc, zFormat, ap);
@@ -33926,7 +34683,7 @@ static void sqlite3TreeViewLine(TreeView *p, const char *zFormat, ...){
     va_start(ap, zFormat);
     sqlite3_str_vappendf(&acc, zFormat, ap);
     va_end(ap);
-    assert( acc.nChar>0 );
+    assert( acc.nChar>0 || acc.accError );
     sqlite3_str_append(&acc, "\n", 1);
   }
   sqlite3StrAccumFinish(&acc);
@@ -33966,7 +34723,7 @@ SQLITE_PRIVATE void sqlite3TreeViewWith(TreeView *pView, const With *pWith, u8 m
         char cSep = '(';
         int j;
         for(j=0; j<pCte->pCols->nExpr; j++){
-          sqlite3_str_appendf(&x, "%c%s", cSep, pCte->pCols->a[j].zName);
+          sqlite3_str_appendf(&x, "%c%s", cSep, pCte->pCols->a[j].zEName);
           cSep = ',';
         }
         sqlite3_str_appendf(&x, ")");
@@ -33991,15 +34748,15 @@ SQLITE_PRIVATE void sqlite3TreeViewSrcList(TreeView *pView, const SrcList *pSrc)
     StrAccum x;
     char zLine[100];
     sqlite3StrAccumInit(&x, 0, zLine, sizeof(zLine), 0);
-    sqlite3_str_appendf(&x, "{%d,*}", pItem->iCursor);
+    sqlite3_str_appendf(&x, "{%d:*}", pItem->iCursor);
     if( pItem->zDatabase ){
       sqlite3_str_appendf(&x, " %s.%s", pItem->zDatabase, pItem->zName);
     }else if( pItem->zName ){
       sqlite3_str_appendf(&x, " %s", pItem->zName);
     }
     if( pItem->pTab ){
-      sqlite3_str_appendf(&x, " tab=%Q nCol=%d ptr=%p",
-           pItem->pTab->zName, pItem->pTab->nCol, pItem->pTab);
+      sqlite3_str_appendf(&x, " tab=%Q nCol=%d ptr=%p used=%llx",
+           pItem->pTab->zName, pItem->pTab->nCol, pItem->pTab, pItem->colUsed);
     }
     if( pItem->zAlias ){
       sqlite3_str_appendf(&x, " (AS %s)", pItem->zAlias);
@@ -34007,6 +34764,9 @@ SQLITE_PRIVATE void sqlite3TreeViewSrcList(TreeView *pView, const SrcList *pSrc)
     if( pItem->fg.jointype & JT_LEFT ){
       sqlite3_str_appendf(&x, " LEFT-JOIN");
     }
+    if( pItem->fg.fromDDL ){
+      sqlite3_str_appendf(&x, " DDL");
+    }
     sqlite3StrAccumFinish(&x);
     sqlite3TreeViewItem(pView, zLine, i<pSrc->nSrc-1);
     if( pItem->pSelect ){
@@ -34255,22 +35015,28 @@ SQLITE_PRIVATE void sqlite3TreeViewWinFunc(TreeView *pView, const Window *pWin,
 SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 moreToFollow){
   const char *zBinOp = 0;   /* Binary operator */
   const char *zUniOp = 0;   /* Unary operator */
-  char zFlgs[60];
+  char zFlgs[200];
   pView = sqlite3TreeViewPush(pView, moreToFollow);
   if( pExpr==0 ){
     sqlite3TreeViewLine(pView, "nil");
     sqlite3TreeViewPop(pView);
     return;
   }
-  if( pExpr->flags || pExpr->affExpr ){
+  if( pExpr->flags || pExpr->affExpr || pExpr->vvaFlags ){
+    StrAccum x;
+    sqlite3StrAccumInit(&x, 0, zFlgs, sizeof(zFlgs), 0);
+    sqlite3_str_appendf(&x, " fg.af=%x.%c",
+      pExpr->flags, pExpr->affExpr ? pExpr->affExpr : 'n');
     if( ExprHasProperty(pExpr, EP_FromJoin) ){
-      sqlite3_snprintf(sizeof(zFlgs),zFlgs,"  fg.af=%x.%c iRJT=%d",
-                       pExpr->flags, pExpr->affExpr ? pExpr->affExpr : 'n',
-                       pExpr->iRightJoinTable);
-    }else{
-      sqlite3_snprintf(sizeof(zFlgs),zFlgs,"  fg.af=%x.%c",
-                       pExpr->flags, pExpr->affExpr ? pExpr->affExpr : 'n');
+      sqlite3_str_appendf(&x, " iRJT=%d", pExpr->iRightJoinTable);
+    }
+    if( ExprHasProperty(pExpr, EP_FromDDL) ){
+      sqlite3_str_appendf(&x, " DDL");
+    }
+    if( ExprHasVVAProperty(pExpr, EP_Immutable) ){
+      sqlite3_str_appendf(&x, " IMMUTABLE");
     }
+    sqlite3StrAccumFinish(&x);
   }else{
     zFlgs[0] = 0;
   }
@@ -34283,10 +35049,18 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m
     case TK_COLUMN: {
       if( pExpr->iTable<0 ){
         /* This only happens when coding check constraints */
-        sqlite3TreeViewLine(pView, "COLUMN(%d)%s", pExpr->iColumn, zFlgs);
+        char zOp2[16];
+        if( pExpr->op2 ){
+          sqlite3_snprintf(sizeof(zOp2),zOp2," op2=0x%02x",pExpr->op2);
+        }else{
+          zOp2[0] = 0;
+        }
+        sqlite3TreeViewLine(pView, "COLUMN(%d)%s%s",
+                                    pExpr->iColumn, zFlgs, zOp2);
       }else{
-        sqlite3TreeViewLine(pView, "{%d:%d}%s",
-                             pExpr->iTable, pExpr->iColumn, zFlgs);
+        sqlite3TreeViewLine(pView, "{%d:%d} pTab=%p%s",
+                        pExpr->iTable, pExpr->iColumn,
+                        pExpr->y.pTab, zFlgs);
       }
       if( ExprHasProperty(pExpr, EP_FixedCol) ){
         sqlite3TreeViewExpr(pView, pExpr->pLeft, 0);
@@ -34368,6 +35142,7 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m
     case TK_RSHIFT:  zBinOp = "RSHIFT"; break;
     case TK_CONCAT:  zBinOp = "CONCAT"; break;
     case TK_DOT:     zBinOp = "DOT";    break;
+    case TK_LIMIT:   zBinOp = "LIMIT";  break;
 
     case TK_UMINUS:  zUniOp = "UMINUS"; break;
     case TK_UPLUS:   zUniOp = "UPLUS";  break;
@@ -34418,14 +35193,27 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m
       }else{
         pFarg = pExpr->x.pList;
 #ifndef SQLITE_OMIT_WINDOWFUNC
-        pWin = pExpr->y.pWin;
+        pWin = ExprHasProperty(pExpr, EP_WinFunc) ? pExpr->y.pWin : 0;
 #else
         pWin = 0;
 #endif
       }
       if( pExpr->op==TK_AGG_FUNCTION ){
-        sqlite3TreeViewLine(pView, "AGG_FUNCTION%d %Q%s",
-                             pExpr->op2, pExpr->u.zToken, zFlgs);
+        sqlite3TreeViewLine(pView, "AGG_FUNCTION%d %Q%s agg=%d[%d]/%p",
+                             pExpr->op2, pExpr->u.zToken, zFlgs,
+                             pExpr->pAggInfo ? pExpr->pAggInfo->selId : 0,
+                             pExpr->iAgg, pExpr->pAggInfo);
+      }else if( pExpr->op2!=0 ){
+        const char *zOp2;
+        char zBuf[8];
+        sqlite3_snprintf(sizeof(zBuf),zBuf,"0x%02x",pExpr->op2);
+        zOp2 = zBuf;
+        if( pExpr->op2==NC_IsCheck ) zOp2 = "NC_IsCheck";
+        if( pExpr->op2==NC_IdxExpr ) zOp2 = "NC_IdxExpr";
+        if( pExpr->op2==NC_PartIdx ) zOp2 = "NC_PartIdx";
+        if( pExpr->op2==NC_GenCol ) zOp2 = "NC_GenCol";
+        sqlite3TreeViewLine(pView, "FUNCTION %Q%s op2=%s",
+                            pExpr->u.zToken, zFlgs, zOp2);
       }else{
         sqlite3TreeViewLine(pView, "FUNCTION %Q%s", pExpr->u.zToken, zFlgs);
       }
@@ -34446,7 +35234,7 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m
       break;
     }
     case TK_SELECT: {
-      sqlite3TreeViewLine(pView, "SELECT-expr flags=0x%x", pExpr->flags);
+      sqlite3TreeViewLine(pView, "subquery-expr flags=0x%x", pExpr->flags);
       sqlite3TreeViewSelect(pView, pExpr->x.pSelect, 0);
       break;
     }
@@ -34521,7 +35309,9 @@ SQLITE_PRIVATE void sqlite3TreeViewExpr(TreeView *pView, const Expr *pExpr, u8 m
       break;
     }
     case TK_VECTOR: {
-      sqlite3TreeViewBareExprList(pView, pExpr->x.pList, "VECTOR");
+      char *z = sqlite3_mprintf("VECTOR%s",zFlgs);
+      sqlite3TreeViewBareExprList(pView, pExpr->x.pList, z);
+      sqlite3_free(z);
       break;
     }
     case TK_SELECT_COLUMN: {
@@ -34567,8 +35357,9 @@ SQLITE_PRIVATE void sqlite3TreeViewBareExprList(
     sqlite3TreeViewLine(pView, "%s", zLabel);
     for(i=0; i<pList->nExpr; i++){
       int j = pList->a[i].u.x.iOrderByCol;
-      char *zName = pList->a[i].zName;
+      char *zName = pList->a[i].zEName;
       int moreToFollow = i<pList->nExpr - 1;
+      if( pList->a[i].eEName!=ENAME_NAME ) zName = 0;
       if( j || zName ){
         sqlite3TreeViewPush(pView, moreToFollow);
         moreToFollow = 0;
@@ -35125,26 +35916,6 @@ static const unsigned char sqlite3Utf8Trans1[] = {
   }                                                                 \
 }
 
-#define READ_UTF16LE(zIn, TERM, c){                                   \
-  c = (*zIn++);                                                       \
-  c += ((*zIn++)<<8);                                                 \
-  if( c>=0xD800 && c<0xE000 && TERM ){                                \
-    int c2 = (*zIn++);                                                \
-    c2 += ((*zIn++)<<8);                                              \
-    c = (c2&0x03FF) + ((c&0x003F)<<10) + (((c&0x03C0)+0x0040)<<10);   \
-  }                                                                   \
-}
-
-#define READ_UTF16BE(zIn, TERM, c){                                   \
-  c = ((*zIn++)<<8);                                                  \
-  c += (*zIn++);                                                      \
-  if( c>=0xD800 && c<0xE000 && TERM ){                                \
-    int c2 = ((*zIn++)<<8);                                           \
-    c2 += (*zIn++);                                                   \
-    c = (c2&0x03FF) + ((c&0x003F)<<10) + (((c&0x03C0)+0x0040)<<10);   \
-  }                                                                   \
-}
-
 /*
 ** Translate a single UTF-8 character.  Return the unicode value.
 **
@@ -35235,9 +36006,11 @@ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3VdbeMemTranslate(Mem *pMem, u8 desired
 
 #if defined(TRANSLATE_TRACE) && defined(SQLITE_DEBUG)
   {
-    char zBuf[100];
-    sqlite3VdbeMemPrettyPrint(pMem, zBuf);
-    fprintf(stderr, "INPUT:  %s\n", zBuf);
+    StrAccum acc;
+    char zBuf[1000];
+    sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0);
+    sqlite3VdbeMemPrettyPrint(pMem, &acc);
+    fprintf(stderr, "INPUT:  %s\n", sqlite3StrAccumFinish(&acc));
   }
 #endif
 
@@ -35319,13 +36092,59 @@ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3VdbeMemTranslate(Mem *pMem, u8 desired
     if( pMem->enc==SQLITE_UTF16LE ){
       /* UTF-16 Little-endian -> UTF-8 */
       while( zIn<zTerm ){
-        READ_UTF16LE(zIn, zIn<zTerm, c);
+        c = *(zIn++);
+        c += (*(zIn++))<<8;
+        if( c>=0xd800 && c<0xe000 ){
+#ifdef SQLITE_REPLACE_INVALID_UTF
+          if( c>=0xdc00 || zIn>=zTerm ){
+            c = 0xfffd;
+          }else{
+            int c2 = *(zIn++);
+            c2 += (*(zIn++))<<8;
+            if( c2<0xdc00 || c2>=0xe000 ){
+              zIn -= 2;
+              c = 0xfffd;
+            }else{
+              c = ((c&0x3ff)<<10) + (c2&0x3ff) + 0x10000;
+            }
+          }
+#else
+          if( zIn<zTerm ){
+            int c2 = (*zIn++);
+            c2 += ((*zIn++)<<8);
+            c = (c2&0x03FF) + ((c&0x003F)<<10) + (((c&0x03C0)+0x0040)<<10);
+          }
+#endif
+        }
         WRITE_UTF8(z, c);
       }
     }else{
       /* UTF-16 Big-endian -> UTF-8 */
       while( zIn<zTerm ){
-        READ_UTF16BE(zIn, zIn<zTerm, c);
+        c = (*(zIn++))<<8;
+        c += *(zIn++);
+        if( c>=0xd800 && c<0xe000 ){
+#ifdef SQLITE_REPLACE_INVALID_UTF
+          if( c>=0xdc00 || zIn>=zTerm ){
+            c = 0xfffd;
+          }else{
+            int c2 = (*(zIn++))<<8;
+            c2 += *(zIn++);
+            if( c2<0xdc00 || c2>=0xe000 ){
+              zIn -= 2;
+              c = 0xfffd;
+            }else{
+              c = ((c&0x3ff)<<10) + (c2&0x3ff) + 0x10000;
+            }
+          }
+#else
+          if( zIn<zTerm ){
+            int c2 = ((*zIn++)<<8);
+            c2 += (*zIn++);
+            c = (c2&0x03FF) + ((c&0x003F)<<10) + (((c&0x03C0)+0x0040)<<10);
+          }
+#endif
+        }
         WRITE_UTF8(z, c);
       }
     }
@@ -35334,9 +36153,9 @@ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3VdbeMemTranslate(Mem *pMem, u8 desired
   *z = 0;
   assert( (pMem->n+(desiredEnc==SQLITE_UTF8?1:2))<=len );
 
-  c = pMem->flags;
+  c = MEM_Str|MEM_Term|(pMem->flags&(MEM_AffMask|MEM_Subtype));
   sqlite3VdbeMemRelease(pMem);
-  pMem->flags = MEM_Str|MEM_Term|(c&(MEM_AffMask|MEM_Subtype));
+  pMem->flags = c;
   pMem->enc = desiredEnc;
   pMem->z = (char*)zOut;
   pMem->zMalloc = pMem->z;
@@ -35345,9 +36164,11 @@ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3VdbeMemTranslate(Mem *pMem, u8 desired
 translate_out:
 #if defined(TRANSLATE_TRACE) && defined(SQLITE_DEBUG)
   {
-    char zBuf[100];
-    sqlite3VdbeMemPrettyPrint(pMem, zBuf);
-    fprintf(stderr, "OUTPUT: %s\n", zBuf);
+    StrAccum acc;
+    char zBuf[1000];
+    sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0);
+    sqlite3VdbeMemPrettyPrint(pMem, &acc);
+    fprintf(stderr, "OUTPUT: %s\n", sqlite3StrAccumFinish(&acc));
   }
 #endif
   return SQLITE_OK;
@@ -35482,18 +36303,15 @@ SQLITE_PRIVATE int sqlite3Utf16ByteLen(const void *zIn, int nChar){
   unsigned char const *z = zIn;
   int n = 0;
 
-  if( SQLITE_UTF16NATIVE==SQLITE_UTF16BE ){
-    while( n<nChar ){
-      READ_UTF16BE(z, 1, c);
-      n++;
-    }
-  }else{
-    while( n<nChar ){
-      READ_UTF16LE(z, 1, c);
-      n++;
-    }
+  if( SQLITE_UTF16NATIVE==SQLITE_UTF16LE ) z++;
+  while( n<nChar ){
+    c = z[0];
+    z += 2;
+    if( c>=0xd8 && c<0xdc && z[0]>=0xdc && z[0]<0xe0 ) z += 2;
+    n++;
   }
-  return (int)(z-(unsigned char const *)zIn);
+  return (int)(z-(unsigned char const *)zIn)
+              - (SQLITE_UTF16NATIVE==SQLITE_UTF16LE);
 }
 
 #if defined(SQLITE_TEST)
@@ -35523,30 +36341,6 @@ SQLITE_PRIVATE void sqlite3UtfSelfTest(void){
     assert( c==t );
     assert( (z-zBuf)==n );
   }
-  for(i=0; i<0x00110000; i++){
-    if( i>=0xD800 && i<0xE000 ) continue;
-    z = zBuf;
-    WRITE_UTF16LE(z, i);
-    n = (int)(z-zBuf);
-    assert( n>0 && n<=4 );
-    z[0] = 0;
-    z = zBuf;
-    READ_UTF16LE(z, 1, c);
-    assert( c==i );
-    assert( (z-zBuf)==n );
-  }
-  for(i=0; i<0x00110000; i++){
-    if( i>=0xD800 && i<0xE000 ) continue;
-    z = zBuf;
-    WRITE_UTF16BE(z, i);
-    n = (int)(z-zBuf);
-    assert( n>0 && n<=4 );
-    z[0] = 0;
-    z = zBuf;
-    READ_UTF16BE(z, 1, c);
-    assert( c==i );
-    assert( (z-zBuf)==n );
-  }
 }
 #endif /* SQLITE_TEST */
 #endif /* SQLITE_OMIT_UTF16 */
@@ -35572,7 +36366,9 @@ SQLITE_PRIVATE void sqlite3UtfSelfTest(void){
 */
 /* #include "sqliteInt.h" */
 /* #include <stdarg.h> */
+#ifndef SQLITE_OMIT_FLOATING_POINT
 #include <math.h>
+#endif
 
 /*
 ** Routine needed to support the testcase() macro.
@@ -35747,6 +36543,7 @@ SQLITE_PRIVATE void sqlite3ErrorMsg(Parse *pParse, const char *zFormat, ...){
     sqlite3DbFree(db, pParse->zErrMsg);
     pParse->zErrMsg = zMsg;
     pParse->rc = SQLITE_ERROR;
+    pParse->pWith = 0;
   }
 }
 
@@ -35870,6 +36667,19 @@ SQLITE_API int sqlite3_strnicmp(const char *zLeft, const char *zRight, int N){
 }
 
 /*
+** Compute an 8-bit hash on a string that is insensitive to case differences
+*/
+SQLITE_PRIVATE u8 sqlite3StrIHash(const char *z){
+  u8 h = 0;
+  if( z==0 ) return 0;
+  while( z[0] ){
+    h += UpperToLower[(unsigned char)z[0]];
+    z++;
+  }
+  return h;
+}
+
+/*
 ** Compute 10 to the E-th power.  Examples:  E==1 results in 10.
 ** E==2 results in 100.  E==50 results in 1.0e50.
 **
@@ -35937,10 +36747,13 @@ static LONGDOUBLE_TYPE sqlite3Pow10(int E){
 ** returns FALSE but it still converts the prefix and writes the result
 ** into *pResult.
 */
+#if defined(_MSC_VER)
+#pragma warning(disable : 4756)
+#endif
 SQLITE_PRIVATE int sqlite3AtoF(const char *z, double *pResult, int length, u8 enc){
 #ifndef SQLITE_OMIT_FLOATING_POINT
   int incr;
-  const char *zEnd = z + length;
+  const char *zEnd;
   /* sign * significand * (10 ^ (esign * exponent)) */
   int sign = 1;    /* sign of significand */
   i64 s = 0;       /* significand */
@@ -35954,12 +36767,15 @@ SQLITE_PRIVATE int sqlite3AtoF(const char *z, double *pResult, int length, u8 en
 
   assert( enc==SQLITE_UTF8 || enc==SQLITE_UTF16LE || enc==SQLITE_UTF16BE );
   *pResult = 0.0;   /* Default return value, in case of an error */
+  if( length==0 ) return 0;
 
   if( enc==SQLITE_UTF8 ){
     incr = 1;
+    zEnd = z + length;
   }else{
     int i;
     incr = 2;
+    length &= ~1;
     assert( SQLITE_UTF16LE==2 && SQLITE_UTF16BE==3 );
     testcase( enc==SQLITE_UTF16LE );
     testcase( enc==SQLITE_UTF16BE );
@@ -36124,6 +36940,33 @@ do_atof_calc:
   return !sqlite3Atoi64(z, pResult, length, enc);
 #endif /* SQLITE_OMIT_FLOATING_POINT */
 }
+#if defined(_MSC_VER)
+#pragma warning(default : 4756)
+#endif
+
+/*
+** Render an signed 64-bit integer as text.  Store the result in zOut[].
+**
+** The caller must ensure that zOut[] is at least 21 bytes in size.
+*/
+SQLITE_PRIVATE void sqlite3Int64ToText(i64 v, char *zOut){
+  int i;
+  u64 x;
+  char zTemp[22];
+  if( v<0 ){
+    x = (v==SMALLEST_INT64) ? ((u64)1)<<63 : (u64)-v;
+  }else{
+    x = v;
+  }
+  i = sizeof(zTemp)-2;
+  zTemp[sizeof(zTemp)-1] = 0;
+  do{
+    zTemp[i--] = (x%10) + '0';
+    x = x/10;
+  }while( x );
+  if( v<0 ) zTemp[i--] = '-';
+  memcpy(zOut, &zTemp[i+1], sizeof(zTemp)-1-i);
+}
 
 /*
 ** Compare the 19-character string zNum against the text representation
@@ -36365,11 +37208,29 @@ SQLITE_PRIVATE int sqlite3GetInt32(const char *zNum, int *pValue){
 */
 SQLITE_PRIVATE int sqlite3Atoi(const char *z){
   int x = 0;
-  if( z ) sqlite3GetInt32(z, &x);
+  sqlite3GetInt32(z, &x);
   return x;
 }
 
 /*
+** Try to convert z into an unsigned 32-bit integer.  Return true on
+** success and false if there is an error.
+**
+** Only decimal notation is accepted.
+*/
+SQLITE_PRIVATE int sqlite3GetUInt32(const char *z, u32 *pI){
+  u64 v = 0;
+  int i;
+  for(i=0; sqlite3Isdigit(z[i]); i++){
+    v = v*10 + z[i] - '0';
+    if( v>4294967296LL ){ *pI = 0; return 0; }
+  }
+  if( i==0 || z[i]!=0 ){ *pI = 0; return 0; }
+  *pI = (u32)v;
+  return 1;
+}
+
+/*
 ** The variable-length integer encoding is as follows:
 **
 ** KEY:
@@ -36671,8 +37532,7 @@ SQLITE_PRIVATE u8 sqlite3GetVarint32(const unsigned char *p, u32 *v){
     u64 v64;
     u8 n;
 
-    p -= 2;
-    n = sqlite3GetVarint(p, &v64);
+    n = sqlite3GetVarint(p-2, &v64);
     assert( n>3 && n<=9 );
     if( (v64 & SQLITE_MAX_U32)!=v64 ){
       *v = 0xffffffff;
@@ -36799,6 +37659,7 @@ SQLITE_PRIVATE u8 sqlite3HexToInt(int h){
   return (u8)(h & 0xf);
 }
 
+/* BEGIN SQLCIPHER */
 #if !defined(SQLITE_OMIT_BLOB_LITERAL) || defined(SQLITE_HAS_CODEC)
 /*
 ** Convert a BLOB literal of the form "x'hhhhhh'" into its binary
@@ -36821,6 +37682,7 @@ SQLITE_PRIVATE void *sqlite3HexToBlob(sqlite3 *db, const char *z, int n){
   return zBlob;
 }
 #endif /* !SQLITE_OMIT_BLOB_LITERAL || SQLITE_HAS_CODEC */
+/* END SQLCIPHER */
 
 /*
 ** Log an error that is an API call on a connection pointer that should
@@ -37494,30 +38356,30 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){
     /*  23 */ "SeekLE"           OpHelp("key=r[P3@P4]"),
     /*  24 */ "SeekGE"           OpHelp("key=r[P3@P4]"),
     /*  25 */ "SeekGT"           OpHelp("key=r[P3@P4]"),
-    /*  26 */ "IfNoHope"         OpHelp("key=r[P3@P4]"),
-    /*  27 */ "NoConflict"       OpHelp("key=r[P3@P4]"),
-    /*  28 */ "NotFound"         OpHelp("key=r[P3@P4]"),
-    /*  29 */ "Found"            OpHelp("key=r[P3@P4]"),
-    /*  30 */ "SeekRowid"        OpHelp("intkey=r[P3]"),
-    /*  31 */ "NotExists"        OpHelp("intkey=r[P3]"),
-    /*  32 */ "Last"             OpHelp(""),
-    /*  33 */ "IfSmaller"        OpHelp(""),
-    /*  34 */ "SorterSort"       OpHelp(""),
-    /*  35 */ "Sort"             OpHelp(""),
-    /*  36 */ "Rewind"           OpHelp(""),
-    /*  37 */ "IdxLE"            OpHelp("key=r[P3@P4]"),
-    /*  38 */ "IdxGT"            OpHelp("key=r[P3@P4]"),
-    /*  39 */ "IdxLT"            OpHelp("key=r[P3@P4]"),
-    /*  40 */ "IdxGE"            OpHelp("key=r[P3@P4]"),
-    /*  41 */ "RowSetRead"       OpHelp("r[P3]=rowset(P1)"),
-    /*  42 */ "RowSetTest"       OpHelp("if r[P3] in rowset(P1) goto P2"),
+    /*  26 */ "IfNotOpen"        OpHelp("if( !csr[P1] ) goto P2"),
+    /*  27 */ "IfNoHope"         OpHelp("key=r[P3@P4]"),
+    /*  28 */ "NoConflict"       OpHelp("key=r[P3@P4]"),
+    /*  29 */ "NotFound"         OpHelp("key=r[P3@P4]"),
+    /*  30 */ "Found"            OpHelp("key=r[P3@P4]"),
+    /*  31 */ "SeekRowid"        OpHelp("intkey=r[P3]"),
+    /*  32 */ "NotExists"        OpHelp("intkey=r[P3]"),
+    /*  33 */ "Last"             OpHelp(""),
+    /*  34 */ "IfSmaller"        OpHelp(""),
+    /*  35 */ "SorterSort"       OpHelp(""),
+    /*  36 */ "Sort"             OpHelp(""),
+    /*  37 */ "Rewind"           OpHelp(""),
+    /*  38 */ "IdxLE"            OpHelp("key=r[P3@P4]"),
+    /*  39 */ "IdxGT"            OpHelp("key=r[P3@P4]"),
+    /*  40 */ "IdxLT"            OpHelp("key=r[P3@P4]"),
+    /*  41 */ "IdxGE"            OpHelp("key=r[P3@P4]"),
+    /*  42 */ "RowSetRead"       OpHelp("r[P3]=rowset(P1)"),
     /*  43 */ "Or"               OpHelp("r[P3]=(r[P1] || r[P2])"),
     /*  44 */ "And"              OpHelp("r[P3]=(r[P1] && r[P2])"),
-    /*  45 */ "Program"          OpHelp(""),
-    /*  46 */ "FkIfZero"         OpHelp("if fkctr[P1]==0 goto P2"),
-    /*  47 */ "IfPos"            OpHelp("if r[P1]>0 then r[P1]-=P3, goto P2"),
-    /*  48 */ "IfNotZero"        OpHelp("if r[P1]!=0 then r[P1]--, goto P2"),
-    /*  49 */ "DecrJumpZero"     OpHelp("if (--r[P1])==0 goto P2"),
+    /*  45 */ "RowSetTest"       OpHelp("if r[P3] in rowset(P1) goto P2"),
+    /*  46 */ "Program"          OpHelp(""),
+    /*  47 */ "FkIfZero"         OpHelp("if fkctr[P1]==0 goto P2"),
+    /*  48 */ "IfPos"            OpHelp("if r[P1]>0 then r[P1]-=P3, goto P2"),
+    /*  49 */ "IfNotZero"        OpHelp("if r[P1]!=0 then r[P1]--, goto P2"),
     /*  50 */ "IsNull"           OpHelp("if r[P1]==NULL goto P2"),
     /*  51 */ "NotNull"          OpHelp("if r[P1]!=NULL goto P2"),
     /*  52 */ "Ne"               OpHelp("IF r[P3]!=r[P1]"),
@@ -37527,83 +38389,83 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){
     /*  56 */ "Lt"               OpHelp("IF r[P3]<r[P1]"),
     /*  57 */ "Ge"               OpHelp("IF r[P3]>=r[P1]"),
     /*  58 */ "ElseNotEq"        OpHelp(""),
-    /*  59 */ "IncrVacuum"       OpHelp(""),
-    /*  60 */ "VNext"            OpHelp(""),
-    /*  61 */ "Init"             OpHelp("Start at P2"),
-    /*  62 */ "PureFunc0"        OpHelp(""),
-    /*  63 */ "Function0"        OpHelp("r[P3]=func(r[P2@P5])"),
-    /*  64 */ "PureFunc"         OpHelp(""),
-    /*  65 */ "Function"         OpHelp("r[P3]=func(r[P2@P5])"),
-    /*  66 */ "Return"           OpHelp(""),
-    /*  67 */ "EndCoroutine"     OpHelp(""),
-    /*  68 */ "HaltIfNull"       OpHelp("if r[P3]=null halt"),
-    /*  69 */ "Halt"             OpHelp(""),
-    /*  70 */ "Integer"          OpHelp("r[P2]=P1"),
-    /*  71 */ "Int64"            OpHelp("r[P2]=P4"),
-    /*  72 */ "String"           OpHelp("r[P2]='P4' (len=P1)"),
-    /*  73 */ "Null"             OpHelp("r[P2..P3]=NULL"),
-    /*  74 */ "SoftNull"         OpHelp("r[P1]=NULL"),
-    /*  75 */ "Blob"             OpHelp("r[P2]=P4 (len=P1)"),
-    /*  76 */ "Variable"         OpHelp("r[P2]=parameter(P1,P4)"),
-    /*  77 */ "Move"             OpHelp("r[P2@P3]=r[P1@P3]"),
-    /*  78 */ "Copy"             OpHelp("r[P2@P3+1]=r[P1@P3+1]"),
-    /*  79 */ "SCopy"            OpHelp("r[P2]=r[P1]"),
-    /*  80 */ "IntCopy"          OpHelp("r[P2]=r[P1]"),
-    /*  81 */ "ResultRow"        OpHelp("output=r[P1@P2]"),
-    /*  82 */ "CollSeq"          OpHelp(""),
-    /*  83 */ "AddImm"           OpHelp("r[P1]=r[P1]+P2"),
-    /*  84 */ "RealAffinity"     OpHelp(""),
-    /*  85 */ "Cast"             OpHelp("affinity(r[P1])"),
-    /*  86 */ "Permutation"      OpHelp(""),
-    /*  87 */ "Compare"          OpHelp("r[P1@P3] <-> r[P2@P3]"),
-    /*  88 */ "IsTrue"           OpHelp("r[P2] = coalesce(r[P1]==TRUE,P3) ^ P4"),
-    /*  89 */ "Offset"           OpHelp("r[P3] = sqlite_offset(P1)"),
-    /*  90 */ "Column"           OpHelp("r[P3]=PX"),
-    /*  91 */ "Affinity"         OpHelp("affinity(r[P1@P2])"),
-    /*  92 */ "MakeRecord"       OpHelp("r[P3]=mkrec(r[P1@P2])"),
-    /*  93 */ "Count"            OpHelp("r[P2]=count()"),
-    /*  94 */ "ReadCookie"       OpHelp(""),
-    /*  95 */ "SetCookie"        OpHelp(""),
-    /*  96 */ "ReopenIdx"        OpHelp("root=P2 iDb=P3"),
-    /*  97 */ "OpenRead"         OpHelp("root=P2 iDb=P3"),
-    /*  98 */ "OpenWrite"        OpHelp("root=P2 iDb=P3"),
-    /*  99 */ "BitAnd"           OpHelp("r[P3]=r[P1]&r[P2]"),
-    /* 100 */ "BitOr"            OpHelp("r[P3]=r[P1]|r[P2]"),
-    /* 101 */ "ShiftLeft"        OpHelp("r[P3]=r[P2]<<r[P1]"),
-    /* 102 */ "ShiftRight"       OpHelp("r[P3]=r[P2]>>r[P1]"),
-    /* 103 */ "Add"              OpHelp("r[P3]=r[P1]+r[P2]"),
-    /* 104 */ "Subtract"         OpHelp("r[P3]=r[P2]-r[P1]"),
-    /* 105 */ "Multiply"         OpHelp("r[P3]=r[P1]*r[P2]"),
-    /* 106 */ "Divide"           OpHelp("r[P3]=r[P2]/r[P1]"),
-    /* 107 */ "Remainder"        OpHelp("r[P3]=r[P2]%r[P1]"),
-    /* 108 */ "Concat"           OpHelp("r[P3]=r[P2]+r[P1]"),
-    /* 109 */ "OpenDup"          OpHelp(""),
-    /* 110 */ "BitNot"           OpHelp("r[P2]= ~r[P1]"),
-    /* 111 */ "OpenAutoindex"    OpHelp("nColumn=P2"),
-    /* 112 */ "OpenEphemeral"    OpHelp("nColumn=P2"),
-    /* 113 */ "String8"          OpHelp("r[P2]='P4'"),
-    /* 114 */ "SorterOpen"       OpHelp(""),
-    /* 115 */ "SequenceTest"     OpHelp("if( cursor[P1].ctr++ ) pc = P2"),
-    /* 116 */ "OpenPseudo"       OpHelp("P3 columns in r[P2]"),
-    /* 117 */ "Close"            OpHelp(""),
-    /* 118 */ "ColumnsUsed"      OpHelp(""),
-    /* 119 */ "SeekHit"          OpHelp("seekHit=P2"),
-    /* 120 */ "Sequence"         OpHelp("r[P2]=cursor[P1].ctr++"),
-    /* 121 */ "NewRowid"         OpHelp("r[P2]=rowid"),
-    /* 122 */ "Insert"           OpHelp("intkey=r[P3] data=r[P2]"),
-    /* 123 */ "Delete"           OpHelp(""),
-    /* 124 */ "ResetCount"       OpHelp(""),
-    /* 125 */ "SorterCompare"    OpHelp("if key(P1)!=trim(r[P3],P4) goto P2"),
-    /* 126 */ "SorterData"       OpHelp("r[P2]=data"),
-    /* 127 */ "RowData"          OpHelp("r[P2]=data"),
-    /* 128 */ "Rowid"            OpHelp("r[P2]=rowid"),
-    /* 129 */ "NullRow"          OpHelp(""),
-    /* 130 */ "SeekEnd"          OpHelp(""),
+    /*  59 */ "DecrJumpZero"     OpHelp("if (--r[P1])==0 goto P2"),
+    /*  60 */ "IncrVacuum"       OpHelp(""),
+    /*  61 */ "VNext"            OpHelp(""),
+    /*  62 */ "Init"             OpHelp("Start at P2"),
+    /*  63 */ "PureFunc"         OpHelp("r[P3]=func(r[P2@NP])"),
+    /*  64 */ "Function"         OpHelp("r[P3]=func(r[P2@NP])"),
+    /*  65 */ "Return"           OpHelp(""),
+    /*  66 */ "EndCoroutine"     OpHelp(""),
+    /*  67 */ "HaltIfNull"       OpHelp("if r[P3]=null halt"),
+    /*  68 */ "Halt"             OpHelp(""),
+    /*  69 */ "Integer"          OpHelp("r[P2]=P1"),
+    /*  70 */ "Int64"            OpHelp("r[P2]=P4"),
+    /*  71 */ "String"           OpHelp("r[P2]='P4' (len=P1)"),
+    /*  72 */ "Null"             OpHelp("r[P2..P3]=NULL"),
+    /*  73 */ "SoftNull"         OpHelp("r[P1]=NULL"),
+    /*  74 */ "Blob"             OpHelp("r[P2]=P4 (len=P1)"),
+    /*  75 */ "Variable"         OpHelp("r[P2]=parameter(P1,P4)"),
+    /*  76 */ "Move"             OpHelp("r[P2@P3]=r[P1@P3]"),
+    /*  77 */ "Copy"             OpHelp("r[P2@P3+1]=r[P1@P3+1]"),
+    /*  78 */ "SCopy"            OpHelp("r[P2]=r[P1]"),
+    /*  79 */ "IntCopy"          OpHelp("r[P2]=r[P1]"),
+    /*  80 */ "ResultRow"        OpHelp("output=r[P1@P2]"),
+    /*  81 */ "CollSeq"          OpHelp(""),
+    /*  82 */ "AddImm"           OpHelp("r[P1]=r[P1]+P2"),
+    /*  83 */ "RealAffinity"     OpHelp(""),
+    /*  84 */ "Cast"             OpHelp("affinity(r[P1])"),
+    /*  85 */ "Permutation"      OpHelp(""),
+    /*  86 */ "Compare"          OpHelp("r[P1@P3] <-> r[P2@P3]"),
+    /*  87 */ "IsTrue"           OpHelp("r[P2] = coalesce(r[P1]==TRUE,P3) ^ P4"),
+    /*  88 */ "Offset"           OpHelp("r[P3] = sqlite_offset(P1)"),
+    /*  89 */ "Column"           OpHelp("r[P3]=PX"),
+    /*  90 */ "Affinity"         OpHelp("affinity(r[P1@P2])"),
+    /*  91 */ "MakeRecord"       OpHelp("r[P3]=mkrec(r[P1@P2])"),
+    /*  92 */ "Count"            OpHelp("r[P2]=count()"),
+    /*  93 */ "ReadCookie"       OpHelp(""),
+    /*  94 */ "SetCookie"        OpHelp(""),
+    /*  95 */ "ReopenIdx"        OpHelp("root=P2 iDb=P3"),
+    /*  96 */ "OpenRead"         OpHelp("root=P2 iDb=P3"),
+    /*  97 */ "OpenWrite"        OpHelp("root=P2 iDb=P3"),
+    /*  98 */ "OpenDup"          OpHelp(""),
+    /*  99 */ "OpenAutoindex"    OpHelp("nColumn=P2"),
+    /* 100 */ "OpenEphemeral"    OpHelp("nColumn=P2"),
+    /* 101 */ "BitAnd"           OpHelp("r[P3]=r[P1]&r[P2]"),
+    /* 102 */ "BitOr"            OpHelp("r[P3]=r[P1]|r[P2]"),
+    /* 103 */ "ShiftLeft"        OpHelp("r[P3]=r[P2]<<r[P1]"),
+    /* 104 */ "ShiftRight"       OpHelp("r[P3]=r[P2]>>r[P1]"),
+    /* 105 */ "Add"              OpHelp("r[P3]=r[P1]+r[P2]"),
+    /* 106 */ "Subtract"         OpHelp("r[P3]=r[P2]-r[P1]"),
+    /* 107 */ "Multiply"         OpHelp("r[P3]=r[P1]*r[P2]"),
+    /* 108 */ "Divide"           OpHelp("r[P3]=r[P2]/r[P1]"),
+    /* 109 */ "Remainder"        OpHelp("r[P3]=r[P2]%r[P1]"),
+    /* 110 */ "Concat"           OpHelp("r[P3]=r[P2]+r[P1]"),
+    /* 111 */ "SorterOpen"       OpHelp(""),
+    /* 112 */ "BitNot"           OpHelp("r[P2]= ~r[P1]"),
+    /* 113 */ "SequenceTest"     OpHelp("if( cursor[P1].ctr++ ) pc = P2"),
+    /* 114 */ "OpenPseudo"       OpHelp("P3 columns in r[P2]"),
+    /* 115 */ "String8"          OpHelp("r[P2]='P4'"),
+    /* 116 */ "Close"            OpHelp(""),
+    /* 117 */ "ColumnsUsed"      OpHelp(""),
+    /* 118 */ "SeekHit"          OpHelp("seekHit=P2"),
+    /* 119 */ "Sequence"         OpHelp("r[P2]=cursor[P1].ctr++"),
+    /* 120 */ "NewRowid"         OpHelp("r[P2]=rowid"),
+    /* 121 */ "Insert"           OpHelp("intkey=r[P3] data=r[P2]"),
+    /* 122 */ "Delete"           OpHelp(""),
+    /* 123 */ "ResetCount"       OpHelp(""),
+    /* 124 */ "SorterCompare"    OpHelp("if key(P1)!=trim(r[P3],P4) goto P2"),
+    /* 125 */ "SorterData"       OpHelp("r[P2]=data"),
+    /* 126 */ "RowData"          OpHelp("r[P2]=data"),
+    /* 127 */ "Rowid"            OpHelp("r[P2]=rowid"),
+    /* 128 */ "NullRow"          OpHelp(""),
+    /* 129 */ "SeekEnd"          OpHelp(""),
+    /* 130 */ "IdxInsert"        OpHelp("key=r[P2]"),
     /* 131 */ "SorterInsert"     OpHelp("key=r[P2]"),
-    /* 132 */ "IdxInsert"        OpHelp("key=r[P2]"),
-    /* 133 */ "IdxDelete"        OpHelp("key=r[P2@P3]"),
-    /* 134 */ "DeferredSeek"     OpHelp("Move P3 to P1.rowid if needed"),
-    /* 135 */ "IdxRowid"         OpHelp("r[P2]=rowid"),
+    /* 132 */ "IdxDelete"        OpHelp("key=r[P2@P3]"),
+    /* 133 */ "DeferredSeek"     OpHelp("Move P3 to P1.rowid if needed"),
+    /* 134 */ "IdxRowid"         OpHelp("r[P2]=rowid"),
+    /* 135 */ "FinishSeek"       OpHelp(""),
     /* 136 */ "Destroy"          OpHelp(""),
     /* 137 */ "Clear"            OpHelp(""),
     /* 138 */ "ResetSorter"      OpHelp(""),
@@ -37616,9 +38478,9 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){
     /* 145 */ "DropTrigger"      OpHelp(""),
     /* 146 */ "IntegrityCk"      OpHelp(""),
     /* 147 */ "RowSetAdd"        OpHelp("rowset(P1)=r[P2]"),
-    /* 148 */ "Real"             OpHelp("r[P2]=P4"),
-    /* 149 */ "Param"            OpHelp(""),
-    /* 150 */ "FkCounter"        OpHelp("fkctr[P1]+=P2"),
+    /* 148 */ "Param"            OpHelp(""),
+    /* 149 */ "FkCounter"        OpHelp("fkctr[P1]+=P2"),
+    /* 150 */ "Real"             OpHelp("r[P2]=P4"),
     /* 151 */ "MemMax"           OpHelp("r[P1]=max(r[P1],r[P2])"),
     /* 152 */ "OffsetLimit"      OpHelp("if r[P1]>0 then r[P2]=r[P1]+max(0,r[P3]) else r[P2]=(-1)"),
     /* 153 */ "AggInverse"       OpHelp("accum=r[P3] inverse(r[P2@P5])"),
@@ -37627,20 +38489,23 @@ SQLITE_PRIVATE const char *sqlite3OpcodeName(int i){
     /* 156 */ "AggValue"         OpHelp("r[P3]=value N=P2"),
     /* 157 */ "AggFinal"         OpHelp("accum=r[P1] N=P2"),
     /* 158 */ "Expire"           OpHelp(""),
-    /* 159 */ "TableLock"        OpHelp("iDb=P1 root=P2 write=P3"),
-    /* 160 */ "VBegin"           OpHelp(""),
-    /* 161 */ "VCreate"          OpHelp(""),
-    /* 162 */ "VDestroy"         OpHelp(""),
-    /* 163 */ "VOpen"            OpHelp(""),
-    /* 164 */ "VColumn"          OpHelp("r[P3]=vcolumn(P2)"),
-    /* 165 */ "VRename"          OpHelp(""),
-    /* 166 */ "Pagecount"        OpHelp(""),
-    /* 167 */ "MaxPgcnt"         OpHelp(""),
-    /* 168 */ "Trace"            OpHelp(""),
-    /* 169 */ "CursorHint"       OpHelp(""),
-    /* 170 */ "Noop"             OpHelp(""),
-    /* 171 */ "Explain"          OpHelp(""),
-    /* 172 */ "Abortable"        OpHelp(""),
+    /* 159 */ "CursorLock"       OpHelp(""),
+    /* 160 */ "CursorUnlock"     OpHelp(""),
+    /* 161 */ "TableLock"        OpHelp("iDb=P1 root=P2 write=P3"),
+    /* 162 */ "VBegin"           OpHelp(""),
+    /* 163 */ "VCreate"          OpHelp(""),
+    /* 164 */ "VDestroy"         OpHelp(""),
+    /* 165 */ "VOpen"            OpHelp(""),
+    /* 166 */ "VColumn"          OpHelp("r[P3]=vcolumn(P2)"),
+    /* 167 */ "VRename"          OpHelp(""),
+    /* 168 */ "Pagecount"        OpHelp(""),
+    /* 169 */ "MaxPgcnt"         OpHelp(""),
+    /* 170 */ "Trace"            OpHelp(""),
+    /* 171 */ "CursorHint"       OpHelp(""),
+    /* 172 */ "ReleaseReg"       OpHelp("release r[P1@P2] mask P3"),
+    /* 173 */ "Noop"             OpHelp(""),
+    /* 174 */ "Explain"          OpHelp(""),
+    /* 175 */ "Abortable"        OpHelp(""),
   };
   return azName[i];
 }
@@ -38004,7 +38869,7 @@ static pid_t randomnessPid = 0;
 ******************************************************************************
 **
 ** This file contains inline asm code for retrieving "high-performance"
-** counters for x86 class CPUs.
+** counters for x86 and x86_64 class CPUs.
 */
 #ifndef SQLITE_HWTIME_H
 #define SQLITE_HWTIME_H
@@ -38015,8 +38880,9 @@ static pid_t randomnessPid = 0;
 ** processor and returns that value.  This can be used for high-res
 ** profiling.
 */
-#if (defined(__GNUC__) || defined(_MSC_VER)) && \
-      (defined(i386) || defined(__i386__) || defined(_M_IX86))
+#if !defined(__STRICT_ANSI__) && \
+    (defined(__GNUC__) || defined(_MSC_VER)) && \
+    (defined(i386) || defined(__i386__) || defined(_M_IX86))
 
   #if defined(__GNUC__)
 
@@ -38037,7 +38903,7 @@ static pid_t randomnessPid = 0;
 
   #endif
 
-#elif (defined(__GNUC__) && defined(__x86_64__))
+#elif !defined(__STRICT_ANSI__) && (defined(__GNUC__) && defined(__x86_64__))
 
   __inline__ sqlite_uint64 sqlite3Hwtime(void){
       unsigned long val;
@@ -38045,7 +38911,7 @@ static pid_t randomnessPid = 0;
       return val;
   }
 
-#elif (defined(__GNUC__) && defined(__ppc__))
+#elif !defined(__STRICT_ANSI__) && (defined(__GNUC__) && defined(__ppc__))
 
   __inline__ sqlite_uint64 sqlite3Hwtime(void){
       unsigned long long retval;
@@ -38062,14 +38928,13 @@ static pid_t randomnessPid = 0;
 
 #else
 
-  #error Need implementation of sqlite3Hwtime() for your platform.
-
   /*
-  ** To compile without implementing sqlite3Hwtime() for your platform,
-  ** you can remove the above #error and use the following
-  ** stub function.  You will lose timing support for many
-  ** of the debugging and testing utilities, but it should at
-  ** least compile and run.
+  ** asm() is needed for hardware timing support.  Without asm(),
+  ** disable the sqlite3Hwtime() routine.
+  **
+  ** sqlite3Hwtime() is only used for some obscure debugging
+  ** and analysis configurations, not in any deliverable, so this
+  ** should not be a great loss.
   */
 SQLITE_PRIVATE   sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); }
 
@@ -38537,7 +39402,7 @@ static int robust_open(const char *z, int f, mode_t m){
     sqlite3_log(SQLITE_WARNING,
                 "attempt to open \"%s\" as file descriptor %d", z, fd);
     fd = -1;
-    if( osOpen("/dev/null", f, m)<0 ) break;
+    if( osOpen("/dev/null", O_RDONLY, m)<0 ) break;
   }
   if( fd>=0 ){
     if( m!=0 ){
@@ -39413,8 +40278,9 @@ static int osSetPosixAdvisoryLock(
   struct flock *pLock,  /* The description of the lock */
   unixFile *pFile       /* Structure holding timeout value */
 ){
+  int tm = pFile->iBusyTimeout;
   int rc = osFcntl(h,F_SETLK,pLock);
-  while( rc<0 && pFile->iBusyTimeout>0 ){
+  while( rc<0 && tm>0 ){
     /* On systems that support some kind of blocking file lock with a timeout,
     ** make appropriate changes here to invoke that blocking file lock.  On
     ** generic posix, however, there is no such API.  So we simply try the
@@ -39422,7 +40288,7 @@ static int osSetPosixAdvisoryLock(
     ** the lock is obtained. */
     usleep(1000);
     rc = osFcntl(h,F_SETLK,pLock);
-    pFile->iBusyTimeout--;
+    tm--;
   }
   return rc;
 }
@@ -41187,7 +42053,7 @@ static int unixRead(
   assert( offset>=0 );
   assert( amt>0 );
 
-  /* If this is a database file (not a journal, master-journal or temp
+  /* If this is a database file (not a journal, super-journal or temp
   ** file), the bytes in the locking range should never be read or written. */
 #if 0
   assert( pFile->pPreallocatedUnused==0
@@ -41300,7 +42166,7 @@ static int unixWrite(
   assert( id );
   assert( amt>0 );
 
-  /* If this is a database file (not a journal, master-journal or temp
+  /* If this is a database file (not a journal, super-journal or temp
   ** file), the bytes in the locking range should never be read or written. */
 #if 0
   assert( pFile->pPreallocatedUnused==0
@@ -41843,7 +42709,9 @@ static int unixFileControl(sqlite3_file *id, int op, void *pArg){
     }
 #ifdef SQLITE_ENABLE_SETLK_TIMEOUT
     case SQLITE_FCNTL_LOCK_TIMEOUT: {
+      int iOld = pFile->iBusyTimeout;
       pFile->iBusyTimeout = *(int*)pArg;
+      *(int*)pArg = iOld;
       return SQLITE_OK;
     }
 #endif
@@ -42162,13 +43030,20 @@ static int unixShmSystemLock(
   assert( n>=1 && n<=SQLITE_SHM_NLOCK );
 
   if( pShmNode->hShm>=0 ){
+    int res;
     /* Initialize the locking parameters */
     f.l_type = lockType;
     f.l_whence = SEEK_SET;
     f.l_start = ofst;
     f.l_len = n;
-    rc = osSetPosixAdvisoryLock(pShmNode->hShm, &f, pFile);
-    rc = (rc!=(-1)) ? SQLITE_OK : SQLITE_BUSY;
+    res = osSetPosixAdvisoryLock(pShmNode->hShm, &f, pFile);
+    if( res==-1 ){
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+      rc = (pFile->iBusyTimeout ? SQLITE_BUSY_TIMEOUT : SQLITE_BUSY);
+#else
+      rc = SQLITE_BUSY;
+#endif
+    }
   }
 
   /* Update the global lock state and do debug tracing */
@@ -42424,10 +43299,12 @@ static int unixOpenSharedMemory(unixFile *pDbFd){
 
     if( pInode->bProcessLock==0 ){
       if( 0==sqlite3_uri_boolean(pDbFd->zPath, "readonly_shm", 0) ){
-        pShmNode->hShm = robust_open(zShm, O_RDWR|O_CREAT,(sStat.st_mode&0777));
+        pShmNode->hShm = robust_open(zShm, O_RDWR|O_CREAT|O_NOFOLLOW,
+                                     (sStat.st_mode&0777));
       }
       if( pShmNode->hShm<0 ){
-        pShmNode->hShm = robust_open(zShm, O_RDONLY, (sStat.st_mode&0777));
+        pShmNode->hShm = robust_open(zShm, O_RDONLY|O_NOFOLLOW,
+                                     (sStat.st_mode&0777));
         if( pShmNode->hShm<0 ){
           rc = unixLogError(SQLITE_CANTOPEN_BKPT, "open", zShm);
           goto shm_open_err;
@@ -42663,6 +43540,28 @@ static int unixShmLock(
   assert( pShmNode->hShm>=0 || pDbFd->pInode->bProcessLock==1 );
   assert( pShmNode->hShm<0 || pDbFd->pInode->bProcessLock==0 );
 
+  /* Check that, if this to be a blocking lock, no locks that occur later
+  ** in the following list than the lock being obtained are already held:
+  **
+  **   1. Checkpointer lock (ofst==1).
+  **   2. Write lock (ofst==0).
+  **   3. Read locks (ofst>=3 && ofst<SQLITE_SHM_NLOCK).
+  **
+  ** In other words, if this is a blocking lock, none of the locks that
+  ** occur later in the above list than the lock being obtained may be
+  ** held.
+  **
+  ** It is not permitted to block on the RECOVER lock.
+  */
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+  assert( (flags & SQLITE_SHM_UNLOCK) || pDbFd->iBusyTimeout==0 || (
+         (ofst!=2)                                   /* not RECOVER */
+      && (ofst!=1 || (p->exclMask|p->sharedMask)==0)
+      && (ofst!=0 || (p->exclMask|p->sharedMask)<3)
+      && (ofst<3  || (p->exclMask|p->sharedMask)<(1<<ofst))
+  ));
+#endif
+
   mask = (1<<(ofst+n)) - (1<<ofst);
   assert( n>1 || mask==(1<<ofst) );
   sqlite3_mutex_enter(pShmNode->pShmMutex);
@@ -43506,7 +44405,7 @@ static int fillInUnixFile(
   if( rc!=SQLITE_OK ){
     if( h>=0 ) robust_close(pNew, h, __LINE__);
   }else{
-    pNew->pMethod = pLockingStyle;
+    pId->pMethods = pLockingStyle;
     OpenCounter(+1);
     verifyDbFile(pNew);
   }
@@ -43587,7 +44486,7 @@ static int proxyTransformUnixFile(unixFile*, const char*);
 
 /*
 ** Search for an unused file descriptor that was opened on the database
-** file (not a journal or master-journal file) identified by pathname
+** file (not a journal or super-journal file) identified by pathname
 ** zPath with SQLITE_OPEN_XXX flags matching those passed as the second
 ** argument to this function.
 **
@@ -43721,7 +44620,7 @@ static int findCreateFileMode(
     while( zPath[nDb]!='-' ){
       /* In normal operation, the journal file name will always contain
       ** a '-' character.  However in 8+3 filename mode, or if a corrupt
-      ** rollback journal specifies a master journal with a goofy name, then
+      ** rollback journal specifies a super-journal with a goofy name, then
       ** the '-' might be missing. */
       if( nDb==0 || zPath[nDb]=='.' ) return SQLITE_OK;
       nDb--;
@@ -43777,7 +44676,7 @@ static int unixOpen(
   unixFile *p = (unixFile *)pFile;
   int fd = -1;                   /* File descriptor returned by open() */
   int openFlags = 0;             /* Flags to pass to open() */
-  int eType = flags&0xFFFFFF00;  /* Type of file to open */
+  int eType = flags&0x0FFF00;  /* Type of file to open */
   int noLock;                    /* True to omit locking primitives */
   int rc = SQLITE_OK;            /* Function Return Code */
   int ctrlFlags = 0;             /* UNIXFILE_* flags */
@@ -43794,12 +44693,12 @@ static int unixOpen(
   struct statfs fsInfo;
 #endif
 
-  /* If creating a master or main-file journal, this function will open
+  /* If creating a super- or main-file journal, this function will open
   ** a file-descriptor on the directory too. The first time unixSync()
   ** is called the directory file descriptor will be fsync()ed and close()d.
   */
   int isNewJrnl = (isCreate && (
-        eType==SQLITE_OPEN_MASTER_JOURNAL
+        eType==SQLITE_OPEN_SUPER_JOURNAL
      || eType==SQLITE_OPEN_MAIN_JOURNAL
      || eType==SQLITE_OPEN_WAL
   ));
@@ -43822,17 +44721,17 @@ static int unixOpen(
   assert(isExclusive==0 || isCreate);
   assert(isDelete==0 || isCreate);
 
-  /* The main DB, main journal, WAL file and master journal are never
+  /* The main DB, main journal, WAL file and super-journal are never
   ** automatically deleted. Nor are they ever temporary files.  */
   assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_DB );
   assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_JOURNAL );
-  assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MASTER_JOURNAL );
+  assert( (!isDelete && zName) || eType!=SQLITE_OPEN_SUPER_JOURNAL );
   assert( (!isDelete && zName) || eType!=SQLITE_OPEN_WAL );
 
   /* Assert that the upper layer has set one of the "file-type" flags. */
   assert( eType==SQLITE_OPEN_MAIN_DB      || eType==SQLITE_OPEN_TEMP_DB
        || eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_TEMP_JOURNAL
-       || eType==SQLITE_OPEN_SUBJOURNAL   || eType==SQLITE_OPEN_MASTER_JOURNAL
+       || eType==SQLITE_OPEN_SUBJOURNAL   || eType==SQLITE_OPEN_SUPER_JOURNAL
        || eType==SQLITE_OPEN_TRANSIENT_DB || eType==SQLITE_OPEN_WAL
   );
 
@@ -43887,7 +44786,7 @@ static int unixOpen(
   if( isReadWrite ) openFlags |= O_RDWR;
   if( isCreate )    openFlags |= O_CREAT;
   if( isExclusive ) openFlags |= (O_EXCL|O_NOFOLLOW);
-  openFlags |= (O_LARGEFILE|O_BINARY);
+  openFlags |= (O_LARGEFILE|O_BINARY|O_NOFOLLOW);
 
   if( fd<0 ){
     mode_t openMode;              /* Permissions to create file with */
@@ -44025,7 +44924,7 @@ static int unixOpen(
 #endif
 
   assert( zPath==0 || zPath[0]=='/'
-      || eType==SQLITE_OPEN_MASTER_JOURNAL || eType==SQLITE_OPEN_MAIN_JOURNAL
+      || eType==SQLITE_OPEN_SUPER_JOURNAL || eType==SQLITE_OPEN_MAIN_JOURNAL
   );
   rc = fillInUnixFile(pVfs, fd, pFile, zPath, ctrlFlags);
 
@@ -44105,7 +45004,8 @@ static int unixAccess(
 
   if( flags==SQLITE_ACCESS_EXISTS ){
     struct stat buf;
-    *pResOut = (0==osStat(zPath, &buf) && buf.st_size>0);
+    *pResOut = 0==osStat(zPath, &buf) &&
+                (!S_ISREG(buf.st_mode) || buf.st_size>0);
   }else{
     *pResOut = osAccess(zPath, W_OK|R_OK)==0;
   }
@@ -44159,7 +45059,7 @@ static int unixFullPathname(
 #else
   int rc = SQLITE_OK;
   int nByte;
-  int nLink = 1;                /* Number of symbolic links followed so far */
+  int nLink = 0;                /* Number of symbolic links followed so far */
   const char *zIn = zPath;      /* Input path for each iteration of loop */
   char *zDel = 0;
 
@@ -44188,10 +45088,11 @@ static int unixFullPathname(
     }
 
     if( bLink ){
+      nLink++;
       if( zDel==0 ){
         zDel = sqlite3_malloc(nOut);
         if( zDel==0 ) rc = SQLITE_NOMEM_BKPT;
-      }else if( ++nLink>SQLITE_MAX_SYMLINKS ){
+      }else if( nLink>=SQLITE_MAX_SYMLINKS ){
         rc = SQLITE_CANTOPEN_BKPT;
       }
 
@@ -44227,6 +45128,7 @@ static int unixFullPathname(
   }while( rc==SQLITE_OK );
 
   sqlite3_free(zDel);
+  if( rc==SQLITE_OK && nLink ) rc = SQLITE_OK_SYMLINK;
   return rc;
 #endif   /* HAVE_READLINK && HAVE_LSTAT */
 }
@@ -44712,7 +45614,7 @@ static int proxyCreateUnixFile(
   int fd = -1;
   unixFile *pNew;
   int rc = SQLITE_OK;
-  int openFlags = O_RDWR | O_CREAT;
+  int openFlags = O_RDWR | O_CREAT | O_NOFOLLOW;
   sqlite3_vfs dummyVfs;
   int terrno = 0;
   UnixUnusedFd *pUnused = NULL;
@@ -44742,7 +45644,7 @@ static int proxyCreateUnixFile(
     }
   }
   if( fd<0 ){
-    openFlags = O_RDONLY;
+    openFlags = O_RDONLY | O_NOFOLLOW;
     fd = robust_open(path, openFlags, 0);
     terrno = errno;
   }
@@ -44868,7 +45770,7 @@ static int proxyBreakConchLock(unixFile *pFile, uuid_t myHostID){
     goto end_breaklock;
   }
   /* write it out to the temporary break file */
-  fd = robust_open(tPath, (O_RDWR|O_CREAT|O_EXCL), 0);
+  fd = robust_open(tPath, (O_RDWR|O_CREAT|O_EXCL|O_NOFOLLOW), 0);
   if( fd<0 ){
     sqlite3_snprintf(sizeof(errmsg), errmsg, "create failed (%d)", errno);
     goto end_breaklock;
@@ -45826,7 +46728,7 @@ SQLITE_API int sqlite3_os_end(void){
 ******************************************************************************
 **
 ** This file contains inline asm code for retrieving "high-performance"
-** counters for x86 class CPUs.
+** counters for x86 and x86_64 class CPUs.
 */
 #ifndef SQLITE_HWTIME_H
 #define SQLITE_HWTIME_H
@@ -45837,8 +46739,9 @@ SQLITE_API int sqlite3_os_end(void){
 ** processor and returns that value.  This can be used for high-res
 ** profiling.
 */
-#if (defined(__GNUC__) || defined(_MSC_VER)) && \
-      (defined(i386) || defined(__i386__) || defined(_M_IX86))
+#if !defined(__STRICT_ANSI__) && \
+    (defined(__GNUC__) || defined(_MSC_VER)) && \
+    (defined(i386) || defined(__i386__) || defined(_M_IX86))
 
   #if defined(__GNUC__)
 
@@ -45859,7 +46762,7 @@ SQLITE_API int sqlite3_os_end(void){
 
   #endif
 
-#elif (defined(__GNUC__) && defined(__x86_64__))
+#elif !defined(__STRICT_ANSI__) && (defined(__GNUC__) && defined(__x86_64__))
 
   __inline__ sqlite_uint64 sqlite3Hwtime(void){
       unsigned long val;
@@ -45867,7 +46770,7 @@ SQLITE_API int sqlite3_os_end(void){
       return val;
   }
 
-#elif (defined(__GNUC__) && defined(__ppc__))
+#elif !defined(__STRICT_ANSI__) && (defined(__GNUC__) && defined(__ppc__))
 
   __inline__ sqlite_uint64 sqlite3Hwtime(void){
       unsigned long long retval;
@@ -45884,14 +46787,13 @@ SQLITE_API int sqlite3_os_end(void){
 
 #else
 
-  #error Need implementation of sqlite3Hwtime() for your platform.
-
   /*
-  ** To compile without implementing sqlite3Hwtime() for your platform,
-  ** you can remove the above #error and use the following
-  ** stub function.  You will lose timing support for many
-  ** of the debugging and testing utilities, but it should at
-  ** least compile and run.
+  ** asm() is needed for hardware timing support.  Without asm(),
+  ** disable the sqlite3Hwtime() routine.
+  **
+  ** sqlite3Hwtime() is only used for some obscure debugging
+  ** and analysis configurations, not in any deliverable, so this
+  ** should not be a great loss.
   */
 SQLITE_PRIVATE   sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); }
 
@@ -47238,17 +48140,17 @@ SQLITE_API int sqlite3_win32_compact_heap(LPUINT pnLargest){
 */
 SQLITE_API int sqlite3_win32_reset_heap(){
   int rc;
-  MUTEX_LOGIC( sqlite3_mutex *pMaster; ) /* The main static mutex */
+  MUTEX_LOGIC( sqlite3_mutex *pMainMtx; ) /* The main static mutex */
   MUTEX_LOGIC( sqlite3_mutex *pMem; )    /* The memsys static mutex */
-  MUTEX_LOGIC( pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
+  MUTEX_LOGIC( pMainMtx = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); )
   MUTEX_LOGIC( pMem = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MEM); )
-  sqlite3_mutex_enter(pMaster);
+  sqlite3_mutex_enter(pMainMtx);
   sqlite3_mutex_enter(pMem);
   winMemAssertMagic();
   if( winMemGetHeap()!=NULL && winMemGetOwned() && sqlite3_memory_used()==0 ){
     /*
     ** At this point, there should be no outstanding memory allocations on
-    ** the heap.  Also, since both the master and memsys locks are currently
+    ** the heap.  Also, since both the main and memsys locks are currently
     ** being held by us, no other function (i.e. from another thread) should
     ** be able to even access the heap.  Attempt to destroy and recreate our
     ** isolated Win32 native heap now.
@@ -47271,7 +48173,7 @@ SQLITE_API int sqlite3_win32_reset_heap(){
     rc = SQLITE_BUSY;
   }
   sqlite3_mutex_leave(pMem);
-  sqlite3_mutex_leave(pMaster);
+  sqlite3_mutex_leave(pMainMtx);
   return rc;
 }
 #endif /* SQLITE_WIN32_MALLOC */
@@ -49450,6 +50352,7 @@ static void winModeBit(winFile *pFile, unsigned char mask, int *pArg){
 /* Forward references to VFS helper methods used for temporary files */
 static int winGetTempname(sqlite3_vfs *, char **);
 static int winIsDir(const void *);
+static BOOL winIsLongPathPrefix(const char *);
 static BOOL winIsDriveLetterAndColon(const char *);
 
 /*
@@ -50970,7 +51873,7 @@ static int winOpen(
 
 #ifndef NDEBUG
   int isOpenJournal = (isCreate && (
-        eType==SQLITE_OPEN_MASTER_JOURNAL
+        eType==SQLITE_OPEN_SUPER_JOURNAL
      || eType==SQLITE_OPEN_MAIN_JOURNAL
      || eType==SQLITE_OPEN_WAL
   ));
@@ -50991,17 +51894,17 @@ static int winOpen(
   assert(isExclusive==0 || isCreate);
   assert(isDelete==0 || isCreate);
 
-  /* The main DB, main journal, WAL file and master journal are never
+  /* The main DB, main journal, WAL file and super-journal are never
   ** automatically deleted. Nor are they ever temporary files.  */
   assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_DB );
   assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MAIN_JOURNAL );
-  assert( (!isDelete && zName) || eType!=SQLITE_OPEN_MASTER_JOURNAL );
+  assert( (!isDelete && zName) || eType!=SQLITE_OPEN_SUPER_JOURNAL );
   assert( (!isDelete && zName) || eType!=SQLITE_OPEN_WAL );
 
   /* Assert that the upper layer has set one of the "file-type" flags. */
   assert( eType==SQLITE_OPEN_MAIN_DB      || eType==SQLITE_OPEN_TEMP_DB
        || eType==SQLITE_OPEN_MAIN_JOURNAL || eType==SQLITE_OPEN_TEMP_JOURNAL
-       || eType==SQLITE_OPEN_SUBJOURNAL   || eType==SQLITE_OPEN_MASTER_JOURNAL
+       || eType==SQLITE_OPEN_SUBJOURNAL   || eType==SQLITE_OPEN_SUPER_JOURNAL
        || eType==SQLITE_OPEN_TRANSIENT_DB || eType==SQLITE_OPEN_WAL
   );
 
@@ -51213,13 +52116,15 @@ static int winOpen(
   }
 
   sqlite3_free(zTmpname);
-  pFile->pMethod = pAppData ? pAppData->pMethod : &winIoMethod;
+  id->pMethods = pAppData ? pAppData->pMethod : &winIoMethod;
   pFile->pVfs = pVfs;
   pFile->h = h;
   if( isReadonly ){
     pFile->ctrlFlags |= WINFILE_RDONLY;
   }
-  if( sqlite3_uri_boolean(zName, "psow", SQLITE_POWERSAFE_OVERWRITE) ){
+  if( (flags & SQLITE_OPEN_MAIN_DB)
+   && sqlite3_uri_boolean(zName, "psow", SQLITE_POWERSAFE_OVERWRITE)
+  ){
     pFile->ctrlFlags |= WINFILE_PSOW;
   }
   pFile->lastErrno = NO_ERROR;
@@ -51430,6 +52335,17 @@ static int winAccess(
 }
 
 /*
+** Returns non-zero if the specified path name starts with the "long path"
+** prefix.
+*/
+static BOOL winIsLongPathPrefix(
+  const char *zPathname
+){
+  return ( zPathname[0]=='\\' && zPathname[1]=='\\'
+        && zPathname[2]=='?'  && zPathname[3]=='\\' );
+}
+
+/*
 ** Returns non-zero if the specified path name starts with a drive letter
 ** followed by a colon character.
 */
@@ -51493,10 +52409,11 @@ static int winFullPathname(
   char *zOut;
 #endif
 
-  /* If this path name begins with "/X:", where "X" is any alphabetic
-  ** character, discard the initial "/" from the pathname.
+  /* If this path name begins with "/X:" or "\\?\", where "X" is any
+  ** alphabetic character, discard the initial "/" from the pathname.
   */
-  if( zRelative[0]=='/' && winIsDriveLetterAndColon(zRelative+1) ){
+  if( zRelative[0]=='/' && (winIsDriveLetterAndColon(zRelative+1)
+       || winIsLongPathPrefix(zRelative+1)) ){
     zRelative++;
   }
 
@@ -52252,7 +53169,7 @@ static int memdbEnlarge(MemFile *p, sqlite3_int64 newSz){
   }
   newSz *= 2;
   if( newSz>p->szMax ) newSz = p->szMax;
-  pNew = sqlite3_realloc64(p->aData, newSz);
+  pNew = sqlite3Realloc(p->aData, newSz);
   if( pNew==0 ) return SQLITE_NOMEM;
   p->aData = pNew;
   p->szAlloc = newSz;
@@ -52425,12 +53342,12 @@ static int memdbOpen(
   p->mFlags = SQLITE_DESERIALIZE_RESIZEABLE | SQLITE_DESERIALIZE_FREEONCLOSE;
   assert( pOutFlags!=0 );  /* True because flags==SQLITE_OPEN_MAIN_DB */
   *pOutFlags = flags | SQLITE_OPEN_MEMORY;
-  p->base.pMethods = &memdb_io_methods;
+  pFile->pMethods = &memdb_io_methods;
   p->szMax = sqlite3GlobalConfig.mxMemdbSize;
   return SQLITE_OK;
 }
 
-#if 0 /* Only used to delete rollback journals, master journals, and WAL
+#if 0 /* Only used to delete rollback journals, super-journals, and WAL
       ** files, none of which exist in memdb.  So this routine is never used */
 /*
 ** Delete the file located at zPath. If the dirSync argument is true,
@@ -52699,10 +53616,11 @@ SQLITE_PRIVATE int sqlite3MemdbInit(void){
   sqlite3_vfs *pLower = sqlite3_vfs_find(0);
   int sz = pLower->szOsFile;
   memdb_vfs.pAppData = pLower;
-  /* In all known configurations of SQLite, the size of a default
-  ** sqlite3_file is greater than the size of a memdb sqlite3_file.
-  ** Should that ever change, remove the following NEVER() */
-  if( NEVER(sz<sizeof(MemFile)) ) sz = sizeof(MemFile);
+  /* The following conditional can only be true when compiled for
+  ** Windows x86 and SQLITE_MAX_MMAP_SIZE=0.  We always leave
+  ** it in, to be safe, but it is marked as NO_TEST since there
+  ** is no way to reach it under most builds. */
+  if( sz<sizeof(MemFile) ) sz = sizeof(MemFile); /*NO_TEST*/
   memdb_vfs.szOsFile = sz;
   return sqlite3_vfs_register(&memdb_vfs, 0);
 }
@@ -54459,13 +55377,15 @@ static PgHdr1 *pcache1AllocPage(PCache1 *pCache, int benignMalloc){
     }
 #else
     pPg = pcache1Alloc(pCache->szAlloc);
-    p = (PgHdr1 *)&((u8 *)pPg)[pCache->szPage];
 #endif
     if( benignMalloc ){ sqlite3EndBenignMalloc(); }
 #ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT
     pcache1EnterMutex(pCache->pGroup);
 #endif
     if( pPg==0 ) return 0;
+#ifndef SQLITE_PCACHE_SEPARATE_HEADER
+    p = (PgHdr1 *)&((u8 *)pPg)[pCache->szPage];
+#endif
     p->page.pBuf = pPg;
     p->page.pExtra = &p[1];
     p->isBulkLocal = 0;
@@ -55466,7 +56386,7 @@ SQLITE_PRIVATE void sqlite3RowSetDelete(void *pArg){
 /*
 ** Allocate a new RowSetEntry object that is associated with the
 ** given RowSet.  Return a pointer to the new and completely uninitialized
-** objected.
+** object.
 **
 ** In an OOM situation, the RowSet.db->mallocFailed flag is set and this
 ** routine returns NULL.
@@ -55742,7 +56662,7 @@ SQLITE_PRIVATE int sqlite3RowSetTest(RowSet *pRowSet, int iBatch, sqlite3_int64
     if( p ){
       struct RowSetEntry **ppPrevTree = &pRowSet->pForest;
       if( (pRowSet->rsFlags & ROWSET_SORTED)==0 ){ /*OPTIMIZATION-IF-FALSE*/
-        /* Only sort the current set of entiries if they need it */
+        /* Only sort the current set of entries if they need it */
         p = rowSetEntrySort(p);
       }
       for(pTree = pRowSet->pForest; pTree; pTree=pTree->pRight){
@@ -55964,6 +56884,11 @@ SQLITE_PRIVATE int sqlite3WalFramesize(Wal *pWal);
 /* Return the sqlite3_file object for the WAL file */
 SQLITE_PRIVATE sqlite3_file *sqlite3WalFile(Wal *pWal);
 
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+SQLITE_PRIVATE int sqlite3WalWriteLock(Wal *pWal, int bLock);
+SQLITE_PRIVATE void sqlite3WalDb(Wal *pWal, sqlite3 *db);
+#endif
+
 #endif /* ifndef SQLITE_OMIT_WAL */
 #endif /* SQLITE_WAL_H */
 
@@ -56018,8 +56943,8 @@ SQLITE_PRIVATE sqlite3_file *sqlite3WalFile(Wal *pWal);
 ** (5) All writes to the database file are synced prior to the rollback journal
 **     being deleted, truncated, or zeroed.
 **
-** (6) If a master journal file is used, then all writes to the database file
-**     are synced prior to the master journal being deleted.
+** (6) If a super-journal file is used, then all writes to the database file
+**     are synced prior to the super-journal being deleted.
 **
 ** Definition: Two databases (or the same database at two points it time)
 ** are said to be "logically equivalent" if they give the same answer to
@@ -56357,6 +57282,7 @@ int sqlite3PagerTrace=1;  /* True to enable tracing */
 /*
 ** A macro used for invoking the codec if there is one
 */
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
 # define CODEC1(P,D,N,X,E) \
     if( P->xCodec && P->xCodec(P->pCodec,D,N,X)==0 ){ E; }
@@ -56367,6 +57293,7 @@ int sqlite3PagerTrace=1;  /* True to enable tracing */
 # define CODEC1(P,D,N,X,E)   /* NO-OP */
 # define CODEC2(P,D,N,X,E,O) O=(char*)D
 #endif
+/* END SQLCIPHER */
 
 /*
 ** The maximum allowed sector size. 64KiB. If the xSectorsize() method
@@ -56450,29 +57377,29 @@ struct PagerSavepoint {
 **   need only update the change-counter once, for the first transaction
 **   committed.
 **
-** setMaster
+** setSuper
 **
 **   When PagerCommitPhaseOne() is called to commit a transaction, it may
-**   (or may not) specify a master-journal name to be written into the
+**   (or may not) specify a super-journal name to be written into the
 **   journal file before it is synced to disk.
 **
-**   Whether or not a journal file contains a master-journal pointer affects
+**   Whether or not a journal file contains a super-journal pointer affects
 **   the way in which the journal file is finalized after the transaction is
 **   committed or rolled back when running in "journal_mode=PERSIST" mode.
-**   If a journal file does not contain a master-journal pointer, it is
+**   If a journal file does not contain a super-journal pointer, it is
 **   finalized by overwriting the first journal header with zeroes. If
-**   it does contain a master-journal pointer the journal file is finalized
+**   it does contain a super-journal pointer the journal file is finalized
 **   by truncating it to zero bytes, just as if the connection were
 **   running in "journal_mode=truncate" mode.
 **
-**   Journal files that contain master journal pointers cannot be finalized
+**   Journal files that contain super-journal pointers cannot be finalized
 **   simply by overwriting the first journal-header with zeroes, as the
-**   master journal pointer could interfere with hot-journal rollback of any
+**   super-journal pointer could interfere with hot-journal rollback of any
 **   subsequently interrupted transaction that reuses the journal file.
 **
 **   The flag is cleared as soon as the journal file is finalized (either
 **   by PagerCommitPhaseTwo or PagerRollback). If an IO error prevents the
-**   journal file from being successfully finalized, the setMaster flag
+**   journal file from being successfully finalized, the setSuper flag
 **   is cleared anyway (and the pager will move to ERROR state).
 **
 ** doNotSpill
@@ -56604,7 +57531,7 @@ struct Pager {
   u8 eState;                  /* Pager state (OPEN, READER, WRITER_LOCKED..) */
   u8 eLock;                   /* Current lock held on database file */
   u8 changeCountDone;         /* Set after incrementing the change-counter */
-  u8 setMaster;               /* True if a m-j name has been written to jrnl */
+  u8 setSuper;                /* Super-jrnl name is written into jrnl */
   u8 doNotSpill;              /* Do not spill the cache when non-zero */
   u8 subjInMemory;            /* True to use in-memory sub-journals */
   u8 bUseFetch;               /* True to use xFetch() */
@@ -56653,12 +57580,14 @@ struct Pager {
 #endif
   void (*xReiniter)(DbPage*); /* Call this routine when reloading pages */
   int (*xGet)(Pager*,Pgno,DbPage**,int); /* Routine to fetch a patch */
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
   void *(*xCodec)(void*,void*,Pgno,int); /* Routine for en/decoding data */
   void (*xCodecSizeChng)(void*,int,int); /* Notify of page size changes */
   void (*xCodecFree)(void*);             /* Destructor for the codec */
   void *pCodec;               /* First argument to xCodec... methods */
 #endif
+/* END SQLCIPHER */
   char *pTmpSpace;            /* Pager.pageSize bytes of space for tmp use */
   PCache *pPCache;            /* Pointer to page cache object */
 #ifndef SQLITE_OMIT_WAL
@@ -56755,11 +57684,6 @@ static const unsigned char aJournalMagic[] = {
 #endif
 
 /*
-** The maximum legal page number is (2^31 - 1).
-*/
-#define PAGER_MAX_PGNO 2147483647
-
-/*
 ** The argument to this macro is a file descriptor (type sqlite3_file*).
 ** Return 0 if it is not open, or non-zero (but not 1) if it is.
 **
@@ -56785,9 +57709,11 @@ static const unsigned char aJournalMagic[] = {
 SQLITE_PRIVATE int sqlite3PagerDirectReadOk(Pager *pPager, Pgno pgno){
   if( pPager->fd->pMethods==0 ) return 0;
   if( sqlite3PCacheIsDirty(pPager->pPCache) ) return 0;
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
   if( pPager->xCodec!=0 ) return 0;
 #endif
+/* END SQLCIPHER */
 #ifndef SQLITE_OMIT_WAL
   if( pPager->pWal ){
     u32 iRead = 0;
@@ -56891,7 +57817,7 @@ static int assert_pager_state(Pager *p){
       assert( pPager->dbSize==pPager->dbOrigSize );
       assert( pPager->dbOrigSize==pPager->dbFileSize );
       assert( pPager->dbOrigSize==pPager->dbHintSize );
-      assert( pPager->setMaster==0 );
+      assert( pPager->setSuper==0 );
       break;
 
     case PAGER_WRITER_CACHEMOD:
@@ -57022,9 +57948,11 @@ static void setGetterMethod(Pager *pPager){
     pPager->xGet = getPageError;
 #if SQLITE_MAX_MMAP_SIZE>0
   }else if( USEFETCH(pPager)
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
    && pPager->xCodec==0
 #endif
+/* END SQLCIPHER */
   ){
     pPager->xGet = getPageMMap;
 #endif /* SQLITE_MAX_MMAP_SIZE>0 */
@@ -57120,6 +58048,7 @@ static int pagerUnlockDb(Pager *pPager, int eLock){
     }
     IOTRACE(("UNLOCK %p %d\n", pPager, eLock))
   }
+  pPager->changeCountDone = pPager->tempFile; /* ticket fb3b3024ea238d5c */
   return rc;
 }
 
@@ -57248,65 +58177,66 @@ static void checkPage(PgHdr *pPg){
 
 /*
 ** When this is called the journal file for pager pPager must be open.
-** This function attempts to read a master journal file name from the
+** This function attempts to read a super-journal file name from the
 ** end of the file and, if successful, copies it into memory supplied
-** by the caller. See comments above writeMasterJournal() for the format
-** used to store a master journal file name at the end of a journal file.
+** by the caller. See comments above writeSuperJournal() for the format
+** used to store a super-journal file name at the end of a journal file.
 **
-** zMaster must point to a buffer of at least nMaster bytes allocated by
+** zSuper must point to a buffer of at least nSuper bytes allocated by
 ** the caller. This should be sqlite3_vfs.mxPathname+1 (to ensure there is
-** enough space to write the master journal name). If the master journal
-** name in the journal is longer than nMaster bytes (including a
-** nul-terminator), then this is handled as if no master journal name
+** enough space to write the super-journal name). If the super-journal
+** name in the journal is longer than nSuper bytes (including a
+** nul-terminator), then this is handled as if no super-journal name
 ** were present in the journal.
 **
-** If a master journal file name is present at the end of the journal
-** file, then it is copied into the buffer pointed to by zMaster. A
-** nul-terminator byte is appended to the buffer following the master
-** journal file name.
+** If a super-journal file name is present at the end of the journal
+** file, then it is copied into the buffer pointed to by zSuper. A
+** nul-terminator byte is appended to the buffer following the
+** super-journal file name.
 **
-** If it is determined that no master journal file name is present
-** zMaster[0] is set to 0 and SQLITE_OK returned.
+** If it is determined that no super-journal file name is present
+** zSuper[0] is set to 0 and SQLITE_OK returned.
 **
 ** If an error occurs while reading from the journal file, an SQLite
 ** error code is returned.
 */
-static int readMasterJournal(sqlite3_file *pJrnl, char *zMaster, u32 nMaster){
+static int readSuperJournal(sqlite3_file *pJrnl, char *zSuper, u32 nSuper){
   int rc;                    /* Return code */
-  u32 len;                   /* Length in bytes of master journal name */
+  u32 len;                   /* Length in bytes of super-journal name */
   i64 szJ;                   /* Total size in bytes of journal file pJrnl */
   u32 cksum;                 /* MJ checksum value read from journal */
   u32 u;                     /* Unsigned loop counter */
   unsigned char aMagic[8];   /* A buffer to hold the magic header */
-  zMaster[0] = '\0';
+  zSuper[0] = '\0';
 
   if( SQLITE_OK!=(rc = sqlite3OsFileSize(pJrnl, &szJ))
    || szJ<16
    || SQLITE_OK!=(rc = read32bits(pJrnl, szJ-16, &len))
-   || len>=nMaster
+   || len>=nSuper
    || len>szJ-16
    || len==0
    || SQLITE_OK!=(rc = read32bits(pJrnl, szJ-12, &cksum))
    || SQLITE_OK!=(rc = sqlite3OsRead(pJrnl, aMagic, 8, szJ-8))
    || memcmp(aMagic, aJournalMagic, 8)
-   || SQLITE_OK!=(rc = sqlite3OsRead(pJrnl, zMaster, len, szJ-16-len))
+   || SQLITE_OK!=(rc = sqlite3OsRead(pJrnl, zSuper, len, szJ-16-len))
   ){
     return rc;
   }
 
-  /* See if the checksum matches the master journal name */
+  /* See if the checksum matches the super-journal name */
   for(u=0; u<len; u++){
-    cksum -= zMaster[u];
+    cksum -= zSuper[u];
   }
   if( cksum ){
     /* If the checksum doesn't add up, then one or more of the disk sectors
-    ** containing the master journal filename is corrupted. This means
+    ** containing the super-journal filename is corrupted. This means
     ** definitely roll back, so just return SQLITE_OK and report a (nul)
-    ** master-journal filename.
+    ** super-journal filename.
     */
     len = 0;
   }
-  zMaster[len] = '\0';
+  zSuper[len] = '\0';
+  zSuper[len+1] = '\0';
 
   return SQLITE_OK;
 }
@@ -57634,50 +58564,50 @@ static int readJournalHdr(
 
 
 /*
-** Write the supplied master journal name into the journal file for pager
-** pPager at the current location. The master journal name must be the last
+** Write the supplied super-journal name into the journal file for pager
+** pPager at the current location. The super-journal name must be the last
 ** thing written to a journal file. If the pager is in full-sync mode, the
 ** journal file descriptor is advanced to the next sector boundary before
 ** anything is written. The format is:
 **
 **   + 4 bytes: PAGER_MJ_PGNO.
-**   + N bytes: Master journal filename in utf-8.
-**   + 4 bytes: N (length of master journal name in bytes, no nul-terminator).
-**   + 4 bytes: Master journal name checksum.
+**   + N bytes: super-journal filename in utf-8.
+**   + 4 bytes: N (length of super-journal name in bytes, no nul-terminator).
+**   + 4 bytes: super-journal name checksum.
 **   + 8 bytes: aJournalMagic[].
 **
-** The master journal page checksum is the sum of the bytes in the master
-** journal name, where each byte is interpreted as a signed 8-bit integer.
+** The super-journal page checksum is the sum of the bytes in thesuper-journal
+** name, where each byte is interpreted as a signed 8-bit integer.
 **
-** If zMaster is a NULL pointer (occurs for a single database transaction),
+** If zSuper is a NULL pointer (occurs for a single database transaction),
 ** this call is a no-op.
 */
-static int writeMasterJournal(Pager *pPager, const char *zMaster){
+static int writeSuperJournal(Pager *pPager, const char *zSuper){
   int rc;                          /* Return code */
-  int nMaster;                     /* Length of string zMaster */
+  int nSuper;                      /* Length of string zSuper */
   i64 iHdrOff;                     /* Offset of header in journal file */
   i64 jrnlSize;                    /* Size of journal file on disk */
-  u32 cksum = 0;                   /* Checksum of string zMaster */
+  u32 cksum = 0;                   /* Checksum of string zSuper */
 
-  assert( pPager->setMaster==0 );
+  assert( pPager->setSuper==0 );
   assert( !pagerUseWal(pPager) );
 
-  if( !zMaster
+  if( !zSuper
    || pPager->journalMode==PAGER_JOURNALMODE_MEMORY
    || !isOpen(pPager->jfd)
   ){
     return SQLITE_OK;
   }
-  pPager->setMaster = 1;
+  pPager->setSuper = 1;
   assert( pPager->journalHdr <= pPager->journalOff );
 
-  /* Calculate the length in bytes and the checksum of zMaster */
-  for(nMaster=0; zMaster[nMaster]; nMaster++){
-    cksum += zMaster[nMaster];
+  /* Calculate the length in bytes and the checksum of zSuper */
+  for(nSuper=0; zSuper[nSuper]; nSuper++){
+    cksum += zSuper[nSuper];
   }
 
   /* If in full-sync mode, advance to the next disk sector before writing
-  ** the master journal name. This is in case the previous page written to
+  ** the super-journal name. This is in case the previous page written to
   ** the journal has already been synced.
   */
   if( pPager->fullSync ){
@@ -57685,25 +58615,25 @@ static int writeMasterJournal(Pager *pPager, const char *zMaster){
   }
   iHdrOff = pPager->journalOff;
 
-  /* Write the master journal data to the end of the journal file. If
+  /* Write the super-journal data to the end of the journal file. If
   ** an error occurs, return the error code to the caller.
   */
   if( (0 != (rc = write32bits(pPager->jfd, iHdrOff, PAGER_MJ_PGNO(pPager))))
-   || (0 != (rc = sqlite3OsWrite(pPager->jfd, zMaster, nMaster, iHdrOff+4)))
-   || (0 != (rc = write32bits(pPager->jfd, iHdrOff+4+nMaster, nMaster)))
-   || (0 != (rc = write32bits(pPager->jfd, iHdrOff+4+nMaster+4, cksum)))
+   || (0 != (rc = sqlite3OsWrite(pPager->jfd, zSuper, nSuper, iHdrOff+4)))
+   || (0 != (rc = write32bits(pPager->jfd, iHdrOff+4+nSuper, nSuper)))
+   || (0 != (rc = write32bits(pPager->jfd, iHdrOff+4+nSuper+4, cksum)))
    || (0 != (rc = sqlite3OsWrite(pPager->jfd, aJournalMagic, 8,
-                                 iHdrOff+4+nMaster+8)))
+                                 iHdrOff+4+nSuper+8)))
   ){
     return rc;
   }
-  pPager->journalOff += (nMaster+20);
+  pPager->journalOff += (nSuper+20);
 
   /* If the pager is in peristent-journal mode, then the physical
-  ** journal-file may extend past the end of the master-journal name
+  ** journal-file may extend past the end of the super-journal name
   ** and 8 bytes of magic data just written to the file. This is
   ** dangerous because the code to rollback a hot-journal file
-  ** will not be able to find the master-journal name to determine
+  ** will not be able to find the super-journal name to determine
   ** whether or not the journal is hot.
   **
   ** Easiest thing to do in this scenario is to truncate the journal
@@ -57840,7 +58770,6 @@ static void pager_unlock(Pager *pPager){
     ** code is cleared and the cache reset in the block below.
     */
     assert( pPager->errCode || pPager->eState!=PAGER_ERROR );
-    pPager->changeCountDone = 0;
     pPager->eState = PAGER_OPEN;
   }
 
@@ -57865,7 +58794,7 @@ static void pager_unlock(Pager *pPager){
 
   pPager->journalOff = 0;
   pPager->journalHdr = 0;
-  pPager->setMaster = 0;
+  pPager->setSuper = 0;
 }
 
 /*
@@ -57981,7 +58910,7 @@ static int pagerFlushOnCommit(Pager *pPager, int bCommit){
 ** to the first error encountered (the journal finalization one) is
 ** returned.
 */
-static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){
+static int pager_end_transaction(Pager *pPager, int hasSuper, int bCommit){
   int rc = SQLITE_OK;      /* Error code from journal finalization operation */
   int rc2 = SQLITE_OK;     /* Error code from db file unlock operation */
 
@@ -58033,7 +58962,7 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){
     }else if( pPager->journalMode==PAGER_JOURNALMODE_PERSIST
       || (pPager->exclusiveMode && pPager->journalMode!=PAGER_JOURNALMODE_WAL)
     ){
-      rc = zeroJournalHdr(pPager, hasMaster||pPager->tempFile);
+      rc = zeroJournalHdr(pPager, hasSuper||pPager->tempFile);
       pPager->journalOff = 0;
     }else{
       /* This branch may be executed with Pager.journalMode==MEMORY if
@@ -58104,10 +59033,9 @@ static int pager_end_transaction(Pager *pPager, int hasMaster, int bCommit){
    && (!pagerUseWal(pPager) || sqlite3WalExclusiveMode(pPager->pWal, 0))
   ){
     rc2 = pagerUnlockDb(pPager, SHARED_LOCK);
-    pPager->changeCountDone = 0;
   }
   pPager->eState = PAGER_READER;
-  pPager->setMaster = 0;
+  pPager->setSuper = 0;
 
   return (rc==SQLITE_OK?rc2:rc);
 }
@@ -58177,6 +59105,7 @@ static u32 pager_cksum(Pager *pPager, const u8 *aData){
 ** Report the current page size and number of reserved bytes back
 ** to the codec.
 */
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
 static void pagerReportSize(Pager *pPager){
   if( pPager->xCodecSizeChng ){
@@ -58187,7 +59116,9 @@ static void pagerReportSize(Pager *pPager){
 #else
 # define pagerReportSize(X)     /* No-op if we do not support a codec */
 #endif
+/* END SQLCIPHER */
 
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
 /*
 ** Make sure the number of reserved bits is the same in the destination
@@ -58201,6 +59132,7 @@ SQLITE_PRIVATE void sqlite3PagerAlignReserve(Pager *pDest, Pager *pSrc){
   }
 }
 #endif
+/* END SQLCIPHER */
 
 /*
 ** Read a single page from either the journal file (if isMainJrnl==1) or
@@ -58253,11 +59185,13 @@ static int pager_playback_one_page(
   char *aData;                  /* Temporary storage for the page */
   sqlite3_file *jfd;            /* The file descriptor for the journal file */
   int isSynced;                 /* True if journal page is synced */
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
   /* The jrnlEnc flag is true if Journal pages should be passed through
   ** the codec.  It is false for pure in-memory journals. */
   const int jrnlEnc = (isMainJrnl || pPager->subjInMemory==0);
 #endif
+/* END SQLCIPHER */
 
   assert( (isMainJrnl&~1)==0 );      /* isMainJrnl is 0 or 1 */
   assert( (isSavepnt&~1)==0 );       /* isSavepnt is 0 or 1 */
@@ -58388,6 +59322,7 @@ static int pager_playback_one_page(
     ** is if the data was just read from an in-memory sub-journal. In that
     ** case it must be encrypted here before it is copied into the database
     ** file.  */
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
     if( !jrnlEnc ){
       CODEC2(pPager, aData, pgno, 7, rc=SQLITE_NOMEM_BKPT, aData);
@@ -58395,12 +59330,14 @@ static int pager_playback_one_page(
       CODEC1(pPager, aData, pgno, 3, rc=SQLITE_NOMEM_BKPT);
     }else
 #endif
+/* END SQLCIPHER */
     rc = sqlite3OsWrite(pPager->fd, (u8 *)aData, pPager->pageSize, ofst);
 
     if( pgno>pPager->dbFileSize ){
       pPager->dbFileSize = pgno;
     }
     if( pPager->pBackup ){
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
       if( jrnlEnc ){
         CODEC1(pPager, aData, pgno, 3, rc=SQLITE_NOMEM_BKPT);
@@ -58408,6 +59345,7 @@ static int pager_playback_one_page(
         CODEC2(pPager, aData, pgno, 7, rc=SQLITE_NOMEM_BKPT,aData);
       }else
 #endif
+/* END SQLCIPHER */
       sqlite3BackupUpdate(pPager->pBackup, pgno, (u8*)aData);
     }
   }else if( !isMainJrnl && pPg==0 ){
@@ -58460,45 +59398,47 @@ static int pager_playback_one_page(
     }
 
     /* Decode the page just read from disk */
+/* BEGIN SQLCIPHER */
 #if SQLITE_HAS_CODEC
     if( jrnlEnc ){ CODEC1(pPager, pData, pPg->pgno, 3, rc=SQLITE_NOMEM_BKPT); }
 #endif
+/* END SQLCIPHER */
     sqlite3PcacheRelease(pPg);
   }
   return rc;
 }
 
 /*
-** Parameter zMaster is the name of a master journal file. A single journal
-** file that referred to the master journal file has just been rolled back.
-** This routine checks if it is possible to delete the master journal file,
+** Parameter zSuper is the name of a super-journal file. A single journal
+** file that referred to the super-journal file has just been rolled back.
+** This routine checks if it is possible to delete the super-journal file,
 ** and does so if it is.
 **
-** Argument zMaster may point to Pager.pTmpSpace. So that buffer is not
+** Argument zSuper may point to Pager.pTmpSpace. So that buffer is not
 ** available for use within this function.
 **
-** When a master journal file is created, it is populated with the names
+** When a super-journal file is created, it is populated with the names
 ** of all of its child journals, one after another, formatted as utf-8
 ** encoded text. The end of each child journal file is marked with a
-** nul-terminator byte (0x00). i.e. the entire contents of a master journal
+** nul-terminator byte (0x00). i.e. the entire contents of a super-journal
 ** file for a transaction involving two databases might be:
 **
 **   "/home/bill/a.db-journal\x00/home/bill/b.db-journal\x00"
 **
-** A master journal file may only be deleted once all of its child
+** A super-journal file may only be deleted once all of its child
 ** journals have been rolled back.
 **
-** This function reads the contents of the master-journal file into
+** This function reads the contents of the super-journal file into
 ** memory and loops through each of the child journal names. For
 ** each child journal, it checks if:
 **
 **   * if the child journal exists, and if so
-**   * if the child journal contains a reference to master journal
-**     file zMaster
+**   * if the child journal contains a reference to super-journal
+**     file zSuper
 **
 ** If a child journal can be found that matches both of the criteria
 ** above, this function returns without doing anything. Otherwise, if
-** no such child journal can be found, file zMaster is deleted from
+** no such child journal can be found, file zSuper is deleted from
 ** the file-system using sqlite3OsDelete().
 **
 ** If an IO error within this function, an error code is returned. This
@@ -58507,95 +59447,100 @@ static int pager_playback_one_page(
 ** occur, SQLITE_OK is returned.
 **
 ** TODO: This function allocates a single block of memory to load
-** the entire contents of the master journal file. This could be
+** the entire contents of the super-journal file. This could be
 ** a couple of kilobytes or so - potentially larger than the page
 ** size.
 */
-static int pager_delmaster(Pager *pPager, const char *zMaster){
+static int pager_delsuper(Pager *pPager, const char *zSuper){
   sqlite3_vfs *pVfs = pPager->pVfs;
   int rc;                   /* Return code */
-  sqlite3_file *pMaster;    /* Malloc'd master-journal file descriptor */
+  sqlite3_file *pSuper;     /* Malloc'd super-journal file descriptor */
   sqlite3_file *pJournal;   /* Malloc'd child-journal file descriptor */
-  char *zMasterJournal = 0; /* Contents of master journal file */
-  i64 nMasterJournal;       /* Size of master journal file */
+  char *zSuperJournal = 0;  /* Contents of super-journal file */
+  i64 nSuperJournal;        /* Size of super-journal file */
   char *zJournal;           /* Pointer to one journal within MJ file */
-  char *zMasterPtr;         /* Space to hold MJ filename from a journal file */
-  int nMasterPtr;           /* Amount of space allocated to zMasterPtr[] */
+  char *zSuperPtr;          /* Space to hold super-journal filename */
+  int nSuperPtr;            /* Amount of space allocated to zSuperPtr[] */
 
-  /* Allocate space for both the pJournal and pMaster file descriptors.
-  ** If successful, open the master journal file for reading.
+  /* Allocate space for both the pJournal and pSuper file descriptors.
+  ** If successful, open the super-journal file for reading.
   */
-  pMaster = (sqlite3_file *)sqlite3MallocZero(pVfs->szOsFile * 2);
-  pJournal = (sqlite3_file *)(((u8 *)pMaster) + pVfs->szOsFile);
-  if( !pMaster ){
+  pSuper = (sqlite3_file *)sqlite3MallocZero(pVfs->szOsFile * 2);
+  if( !pSuper ){
     rc = SQLITE_NOMEM_BKPT;
+    pJournal = 0;
   }else{
-    const int flags = (SQLITE_OPEN_READONLY|SQLITE_OPEN_MASTER_JOURNAL);
-    rc = sqlite3OsOpen(pVfs, zMaster, pMaster, flags, 0);
+    const int flags = (SQLITE_OPEN_READONLY|SQLITE_OPEN_SUPER_JOURNAL);
+    rc = sqlite3OsOpen(pVfs, zSuper, pSuper, flags, 0);
+    pJournal = (sqlite3_file *)(((u8 *)pSuper) + pVfs->szOsFile);
   }
-  if( rc!=SQLITE_OK ) goto delmaster_out;
+  if( rc!=SQLITE_OK ) goto delsuper_out;
 
-  /* Load the entire master journal file into space obtained from
-  ** sqlite3_malloc() and pointed to by zMasterJournal.   Also obtain
-  ** sufficient space (in zMasterPtr) to hold the names of master
-  ** journal files extracted from regular rollback-journals.
+  /* Load the entire super-journal file into space obtained from
+  ** sqlite3_malloc() and pointed to by zSuperJournal.   Also obtain
+  ** sufficient space (in zSuperPtr) to hold the names of super-journal
+  ** files extracted from regular rollback-journals.
   */
-  rc = sqlite3OsFileSize(pMaster, &nMasterJournal);
-  if( rc!=SQLITE_OK ) goto delmaster_out;
-  nMasterPtr = pVfs->mxPathname+1;
-  zMasterJournal = sqlite3Malloc(nMasterJournal + nMasterPtr + 1);
-  if( !zMasterJournal ){
+  rc = sqlite3OsFileSize(pSuper, &nSuperJournal);
+  if( rc!=SQLITE_OK ) goto delsuper_out;
+  nSuperPtr = pVfs->mxPathname+1;
+  zSuperJournal = sqlite3Malloc(nSuperJournal + nSuperPtr + 2);
+  if( !zSuperJournal ){
     rc = SQLITE_NOMEM_BKPT;
-    goto delmaster_out;
+    goto delsuper_out;
   }
-  zMasterPtr = &zMasterJournal[nMasterJournal+1];
-  rc = sqlite3OsRead(pMaster, zMasterJournal, (int)nMasterJournal, 0);
-  if( rc!=SQLITE_OK ) goto delmaster_out;
-  zMasterJournal[nMasterJournal] = 0;
+  zSuperPtr = &zSuperJournal[nSuperJournal+2];
+  rc = sqlite3OsRead(pSuper, zSuperJournal, (int)nSuperJournal, 0);
+  if( rc!=SQLITE_OK ) goto delsuper_out;
+  zSuperJournal[nSuperJournal] = 0;
+  zSuperJournal[nSuperJournal+1] = 0;
 
-  zJournal = zMasterJournal;
-  while( (zJournal-zMasterJournal)<nMasterJournal ){
+  zJournal = zSuperJournal;
+  while( (zJournal-zSuperJournal)<nSuperJournal ){
     int exists;
     rc = sqlite3OsAccess(pVfs, zJournal, SQLITE_ACCESS_EXISTS, &exists);
     if( rc!=SQLITE_OK ){
-      goto delmaster_out;
+      goto delsuper_out;
     }
     if( exists ){
-      /* One of the journals pointed to by the master journal exists.
-      ** Open it and check if it points at the master journal. If
-      ** so, return without deleting the master journal file.
+      /* One of the journals pointed to by the super-journal exists.
+      ** Open it and check if it points at the super-journal. If
+      ** so, return without deleting the super-journal file.
+      ** NB:  zJournal is really a MAIN_JOURNAL.  But call it a
+      ** SUPER_JOURNAL here so that the VFS will not send the zJournal
+      ** name into sqlite3_database_file_object().
       */
       int c;
-      int flags = (SQLITE_OPEN_READONLY|SQLITE_OPEN_MAIN_JOURNAL);
+      int flags = (SQLITE_OPEN_READONLY|SQLITE_OPEN_SUPER_JOURNAL);
       rc = sqlite3OsOpen(pVfs, zJournal, pJournal, flags, 0);
       if( rc!=SQLITE_OK ){
-        goto delmaster_out;
+        goto delsuper_out;
       }
 
-      rc = readMasterJournal(pJournal, zMasterPtr, nMasterPtr);
+      rc = readSuperJournal(pJournal, zSuperPtr, nSuperPtr);
       sqlite3OsClose(pJournal);
       if( rc!=SQLITE_OK ){
-        goto delmaster_out;
+        goto delsuper_out;
       }
 
-      c = zMasterPtr[0]!=0 && strcmp(zMasterPtr, zMaster)==0;
+      c = zSuperPtr[0]!=0 && strcmp(zSuperPtr, zSuper)==0;
       if( c ){
-        /* We have a match. Do not delete the master journal file. */
-        goto delmaster_out;
+        /* We have a match. Do not delete the super-journal file. */
+        goto delsuper_out;
       }
     }
     zJournal += (sqlite3Strlen30(zJournal)+1);
   }
 
-  sqlite3OsClose(pMaster);
-  rc = sqlite3OsDelete(pVfs, zMaster, 0);
+  sqlite3OsClose(pSuper);
+  rc = sqlite3OsDelete(pVfs, zSuper, 0);
 
-delmaster_out:
-  sqlite3_free(zMasterJournal);
-  if( pMaster ){
-    sqlite3OsClose(pMaster);
+delsuper_out:
+  sqlite3_free(zSuperJournal);
+  if( pSuper ){
+    sqlite3OsClose(pSuper);
     assert( !isOpen(pJournal) );
-    sqlite3_free(pMaster);
+    sqlite3_free(pSuper);
   }
   return rc;
 }
@@ -58673,7 +59618,7 @@ SQLITE_PRIVATE int sqlite3SectorSize(sqlite3_file *pFile){
 ** pager based on the value returned by the xSectorSize method
 ** of the open database file. The sector size will be used
 ** to determine the size and alignment of journal header and
-** master journal pointers within created journal files.
+** super-journal pointers within created journal files.
 **
 ** For temporary files the effective sector size is always 512 bytes.
 **
@@ -58772,7 +59717,7 @@ static int pager_playback(Pager *pPager, int isHot){
   Pgno mxPg = 0;           /* Size of the original file in pages */
   int rc;                  /* Result code of a subroutine */
   int res = 1;             /* Value returned by sqlite3OsAccess() */
-  char *zMaster = 0;       /* Name of master journal file if any */
+  char *zSuper = 0;        /* Name of super-journal file if any */
   int needPagerReset;      /* True to reset page prior to first page rollback */
   int nPlayback = 0;       /* Total number of pages restored from journal */
   u32 savedPageSize = pPager->pageSize;
@@ -58786,8 +59731,8 @@ static int pager_playback(Pager *pPager, int isHot){
     goto end_playback;
   }
 
-  /* Read the master journal name from the journal, if it is present.
-  ** If a master journal file name is specified, but the file is not
+  /* Read the super-journal name from the journal, if it is present.
+  ** If a super-journal file name is specified, but the file is not
   ** present on disk, then the journal is not hot and does not need to be
   ** played back.
   **
@@ -58797,12 +59742,12 @@ static int pager_playback(Pager *pPager, int isHot){
   ** mxPathname is 512, which is the same as the minimum allowable value
   ** for pageSize.
   */
-  zMaster = pPager->pTmpSpace;
-  rc = readMasterJournal(pPager->jfd, zMaster, pPager->pVfs->mxPathname+1);
-  if( rc==SQLITE_OK && zMaster[0] ){
-    rc = sqlite3OsAccess(pVfs, zMaster, SQLITE_ACCESS_EXISTS, &res);
+  zSuper = pPager->pTmpSpace;
+  rc = readSuperJournal(pPager->jfd, zSuper, pPager->pVfs->mxPathname+1);
+  if( rc==SQLITE_OK && zSuper[0] ){
+    rc = sqlite3OsAccess(pVfs, zSuper, SQLITE_ACCESS_EXISTS, &res);
   }
-  zMaster = 0;
+  zSuper = 0;
   if( rc!=SQLITE_OK || !res ){
     goto end_playback;
   }
@@ -58929,8 +59874,8 @@ end_playback:
   pPager->changeCountDone = pPager->tempFile;
 
   if( rc==SQLITE_OK ){
-    zMaster = pPager->pTmpSpace;
-    rc = readMasterJournal(pPager->jfd, zMaster, pPager->pVfs->mxPathname+1);
+    zSuper = pPager->pTmpSpace;
+    rc = readSuperJournal(pPager->jfd, zSuper, pPager->pVfs->mxPathname+1);
     testcase( rc!=SQLITE_OK );
   }
   if( rc==SQLITE_OK
@@ -58939,14 +59884,14 @@ end_playback:
     rc = sqlite3PagerSync(pPager, 0);
   }
   if( rc==SQLITE_OK ){
-    rc = pager_end_transaction(pPager, zMaster[0]!='\0', 0);
+    rc = pager_end_transaction(pPager, zSuper[0]!='\0', 0);
     testcase( rc!=SQLITE_OK );
   }
-  if( rc==SQLITE_OK && zMaster[0] && res ){
-    /* If there was a master journal and this routine will return success,
-    ** see if it is possible to delete the master journal.
+  if( rc==SQLITE_OK && zSuper[0] && res ){
+    /* If there was a super-journal and this routine will return success,
+    ** see if it is possible to delete the super-journal.
     */
-    rc = pager_delmaster(pPager, zMaster);
+    rc = pager_delsuper(pPager, zSuper);
     testcase( rc!=SQLITE_OK );
   }
   if( isHot && nPlayback ){
@@ -59327,7 +60272,7 @@ static int pagerOpenWalIfPresent(Pager *pPager){
 
 /*
 ** Playback savepoint pSavepoint. Or, if pSavepoint==NULL, then playback
-** the entire master journal file. The case pSavepoint==NULL occurs when
+** the entire super-journal file. The case pSavepoint==NULL occurs when
 ** a ROLLBACK TO command is invoked on a SAVEPOINT that is a transaction
 ** savepoint.
 **
@@ -59791,7 +60736,7 @@ SQLITE_PRIVATE void *sqlite3PagerTempSpace(Pager *pPager){
 **
 ** Regardless of mxPage, return the current maximum page count.
 */
-SQLITE_PRIVATE int sqlite3PagerMaxPageCount(Pager *pPager, int mxPage){
+SQLITE_PRIVATE Pgno sqlite3PagerMaxPageCount(Pager *pPager, Pgno mxPage){
   if( mxPage>0 ){
     pPager->mxPgno = mxPage;
   }
@@ -60163,9 +61108,11 @@ SQLITE_PRIVATE int sqlite3PagerClose(Pager *pPager, sqlite3 *db){
   sqlite3PageFree(pTmp);
   sqlite3PcacheClose(pPager->pPCache);
 
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
   if( pPager->xCodecFree ) pPager->xCodecFree(pPager->pCodec);
 #endif
+/* END SQLCIPHER */
 
   assert( !pPager->aSavepoint && !pPager->pInJournal );
   assert( !isOpen(pPager->jfd) && !isOpen(pPager->sjfd) );
@@ -60508,11 +61455,13 @@ static int subjournalPage(PgHdr *pPg){
       i64 offset = (i64)pPager->nSubRec*(4+pPager->pageSize);
       char *pData2;
 
+/* BEGIN SQLCIPHER */
 #if SQLITE_HAS_CODEC
       if( !pPager->subjInMemory ){
         CODEC2(pPager, pData, pPg->pgno, 7, return SQLITE_NOMEM_BKPT, pData2);
       }else
 #endif
+/* END SQLCIPHER */
       pData2 = pData;
       PAGERTRACE(("STMT-JOURNAL %d page %d\n", PAGERID(pPager), pPg->pgno));
       rc = write32bits(pPager->sjfd, offset, pPg->pgno);
@@ -60708,7 +61657,8 @@ SQLITE_PRIVATE int sqlite3PagerOpen(
   int pcacheSize = sqlite3PcacheSize();       /* Bytes to allocate for PCache */
   u32 szPageDflt = SQLITE_DEFAULT_PAGE_SIZE;  /* Default page size */
   const char *zUri = 0;    /* URI args to copy */
-  int nUri = 0;            /* Number of bytes of URI args at *zUri */
+  int nUriByte = 1;        /* Number of bytes of URI args at *zUri */
+  int nUri = 0;            /* Number of URI parameters */
 
   /* Figure out how much space is required for each journal file-handle
   ** (there are two of them, the main journal and the sub-journal).  */
@@ -60742,14 +61692,24 @@ SQLITE_PRIVATE int sqlite3PagerOpen(
     }
     zPathname[0] = 0; /* Make sure initialized even if FullPathname() fails */
     rc = sqlite3OsFullPathname(pVfs, zFilename, nPathname, zPathname);
+    if( rc!=SQLITE_OK ){
+      if( rc==SQLITE_OK_SYMLINK ){
+        if( vfsFlags & SQLITE_OPEN_NOFOLLOW ){
+          rc = SQLITE_CANTOPEN_SYMLINK;
+        }else{
+          rc = SQLITE_OK;
+        }
+      }
+    }
     nPathname = sqlite3Strlen30(zPathname);
     z = zUri = &zFilename[sqlite3Strlen30(zFilename)+1];
     while( *z ){
-      z += sqlite3Strlen30(z)+1;
-      z += sqlite3Strlen30(z)+1;
+      z += strlen(z)+1;
+      z += strlen(z)+1;
+      nUri++;
     }
-    nUri = (int)(&z[1] - zUri);
-    assert( nUri>=0 );
+    nUriByte = (int)(&z[1] - zUri);
+    assert( nUriByte>=1 );
     if( rc==SQLITE_OK && nPathname+8>pVfs->mxPathname ){
       /* This branch is taken when the journal path required by
       ** the database being opened will be more than pVfs->mxPathname
@@ -60774,50 +61734,111 @@ SQLITE_PRIVATE int sqlite3PagerOpen(
   **     Database file handle            (pVfs->szOsFile bytes)
   **     Sub-journal file handle         (journalFileSize bytes)
   **     Main journal file handle        (journalFileSize bytes)
+  **     Ptr back to the Pager           (sizeof(Pager*) bytes)
+  **     \0\0\0\0 database prefix        (4 bytes)
   **     Database file name              (nPathname+1 bytes)
-  **     Journal file name               (nPathname+8+1 bytes)
+  **     URI query parameters            (nUriByte bytes)
+  **     Journal filename                (nPathname+8+1 bytes)
+  **     WAL filename                    (nPathname+4+1 bytes)
+  **     \0\0\0 terminator               (3 bytes)
+  **
+  ** Some 3rd-party software, over which we have no control, depends on
+  ** the specific order of the filenames and the \0 separators between them
+  ** so that it can (for example) find the database filename given the WAL
+  ** filename without using the sqlite3_filename_database() API.  This is a
+  ** misuse of SQLite and a bug in the 3rd-party software, but the 3rd-party
+  ** software is in widespread use, so we try to avoid changing the filename
+  ** order and formatting if possible.  In particular, the details of the
+  ** filename format expected by 3rd-party software should be as follows:
+  **
+  **   - Main Database Path
+  **   - \0
+  **   - Multiple URI components consisting of:
+  **     - Key
+  **     - \0
+  **     - Value
+  **     - \0
+  **   - \0
+  **   - Journal Path
+  **   - \0
+  **   - WAL Path (zWALName)
+  **   - \0
+  **
+  ** The sqlite3_create_filename() interface and the databaseFilename() utility
+  ** that is used by sqlite3_filename_database() and kin also depend on the
+  ** specific formatting and order of the various filenames, so if the format
+  ** changes here, be sure to change it there as well.
   */
   pPtr = (u8 *)sqlite3MallocZero(
-    ROUND8(sizeof(*pPager)) +      /* Pager structure */
-    ROUND8(pcacheSize) +           /* PCache object */
-    ROUND8(pVfs->szOsFile) +       /* The main db file */
-    journalFileSize * 2 +          /* The two journal files */
-    nPathname + 1 + nUri +         /* zFilename */
-    nPathname + 8 + 2              /* zJournal */
+    ROUND8(sizeof(*pPager)) +            /* Pager structure */
+    ROUND8(pcacheSize) +                 /* PCache object */
+    ROUND8(pVfs->szOsFile) +             /* The main db file */
+    journalFileSize * 2 +                /* The two journal files */
+    sizeof(pPager) +                     /* Space to hold a pointer */
+    4 +                                  /* Database prefix */
+    nPathname + 1 +                      /* database filename */
+    nUriByte +                           /* query parameters */
+    nPathname + 8 + 1 +                  /* Journal filename */
 #ifndef SQLITE_OMIT_WAL
-    + nPathname + 4 + 2            /* zWal */
+    nPathname + 4 + 1 +                  /* WAL filename */
 #endif
+    3                                    /* Terminator */
   );
   assert( EIGHT_BYTE_ALIGNMENT(SQLITE_INT_TO_PTR(journalFileSize)) );
   if( !pPtr ){
     sqlite3DbFree(0, zPathname);
     return SQLITE_NOMEM_BKPT;
   }
-  pPager =              (Pager*)(pPtr);
-  pPager->pPCache =    (PCache*)(pPtr += ROUND8(sizeof(*pPager)));
-  pPager->fd =   (sqlite3_file*)(pPtr += ROUND8(pcacheSize));
-  pPager->sjfd = (sqlite3_file*)(pPtr += ROUND8(pVfs->szOsFile));
-  pPager->jfd =  (sqlite3_file*)(pPtr += journalFileSize);
-  pPager->zFilename =    (char*)(pPtr += journalFileSize);
+  pPager = (Pager*)pPtr;                  pPtr += ROUND8(sizeof(*pPager));
+  pPager->pPCache = (PCache*)pPtr;        pPtr += ROUND8(pcacheSize);
+  pPager->fd = (sqlite3_file*)pPtr;       pPtr += ROUND8(pVfs->szOsFile);
+  pPager->sjfd = (sqlite3_file*)pPtr;     pPtr += journalFileSize;
+  pPager->jfd =  (sqlite3_file*)pPtr;     pPtr += journalFileSize;
   assert( EIGHT_BYTE_ALIGNMENT(pPager->jfd) );
+  memcpy(pPtr, &pPager, sizeof(pPager));  pPtr += sizeof(pPager);
+
+  /* Fill in the Pager.zFilename and pPager.zQueryParam fields */
+                                          pPtr += 4;  /* Skip zero prefix */
+  pPager->zFilename = (char*)pPtr;
+  if( nPathname>0 ){
+    memcpy(pPtr, zPathname, nPathname);   pPtr += nPathname + 1;
+    if( zUri ){
+      memcpy(pPtr, zUri, nUriByte);       pPtr += nUriByte;
+    }else{
+                                          pPtr++;
+    }
+  }
+
+
+  /* Fill in Pager.zJournal */
+  if( nPathname>0 ){
+    pPager->zJournal = (char*)pPtr;
+    memcpy(pPtr, zPathname, nPathname);   pPtr += nPathname;
+    memcpy(pPtr, "-journal",8);           pPtr += 8 + 1;
+#ifdef SQLITE_ENABLE_8_3_NAMES
+    sqlite3FileSuffix3(zFilename,pPager->zJournal);
+    pPtr = (u8*)(pPager->zJournal + sqlite3Strlen30(pPager->zJournal)+1);
+#endif
+  }else{
+    pPager->zJournal = 0;
+  }
 
-  /* Fill in the Pager.zFilename and Pager.zJournal buffers, if required. */
-  if( zPathname ){
-    assert( nPathname>0 );
-    pPager->zJournal =   (char*)(pPtr += nPathname + 1 + nUri);
-    memcpy(pPager->zFilename, zPathname, nPathname);
-    if( nUri ) memcpy(&pPager->zFilename[nPathname+1], zUri, nUri);
-    memcpy(pPager->zJournal, zPathname, nPathname);
-    memcpy(&pPager->zJournal[nPathname], "-journal\000", 8+2);
-    sqlite3FileSuffix3(pPager->zFilename, pPager->zJournal);
 #ifndef SQLITE_OMIT_WAL
-    pPager->zWal = &pPager->zJournal[nPathname+8+1];
-    memcpy(pPager->zWal, zPathname, nPathname);
-    memcpy(&pPager->zWal[nPathname], "-wal\000", 4+1);
-    sqlite3FileSuffix3(pPager->zFilename, pPager->zWal);
+  /* Fill in Pager.zWal */
+  if( nPathname>0 ){
+    pPager->zWal = (char*)pPtr;
+    memcpy(pPtr, zPathname, nPathname);   pPtr += nPathname;
+    memcpy(pPtr, "-wal", 4);              pPtr += 4 + 1;
+#ifdef SQLITE_ENABLE_8_3_NAMES
+    sqlite3FileSuffix3(zFilename, pPager->zWal);
+    pPtr = (u8*)(pPager->zWal + sqlite3Strlen30(pPager->zWal)+1);
 #endif
-    sqlite3DbFree(0, zPathname);
+  }else{
+    pPager->zWal = 0;
   }
+#endif
+
+  if( nPathname ) sqlite3DbFree(0, zPathname);
   pPager->pVfs = pVfs;
   pPager->vfsFlags = vfsFlags;
 
@@ -60866,9 +61887,9 @@ SQLITE_PRIVATE int sqlite3PagerOpen(
         }
 #endif
       }
-      pPager->noLock = sqlite3_uri_boolean(zFilename, "nolock", 0);
+      pPager->noLock = sqlite3_uri_boolean(pPager->zFilename, "nolock", 0);
       if( (iDc & SQLITE_IOCAP_IMMUTABLE)!=0
-       || sqlite3_uri_boolean(zFilename, "immutable", 0) ){
+       || sqlite3_uri_boolean(pPager->zFilename, "immutable", 0) ){
           vfsFlags |= SQLITE_OPEN_READONLY;
           goto act_like_temp_file;
       }
@@ -60975,6 +61996,19 @@ act_like_temp_file:
   return SQLITE_OK;
 }
 
+/*
+** Return the sqlite3_file for the main database given the name
+** of the corresonding WAL or Journal name as passed into
+** xOpen.
+*/
+SQLITE_API sqlite3_file *sqlite3_database_file_object(const char *zName){
+  Pager *pPager;
+  while( zName[-1]!=0 || zName[-2]!=0 || zName[-3]!=0 || zName[-4]!=0 ){
+    zName--;
+  }
+  pPager = *(Pager**)(zName - 4 - sizeof(Pager*));
+  return pPager->fd;
+}
 
 
 /*
@@ -60995,8 +62029,8 @@ act_like_temp_file:
 ** just deleted using OsDelete, *pExists is set to 0 and SQLITE_OK
 ** is returned.
 **
-** This routine does not check if there is a master journal filename
-** at the end of the file. If there is, and that master journal file
+** This routine does not check if there is a super-journal filename
+** at the end of the file. If there is, and that super-journal file
 ** does not exist, then the journal file is not really hot. In this
 ** case this routine will return a false-positive. The pager_playback()
 ** routine will discover that the journal file is not really hot and
@@ -61445,7 +62479,7 @@ static int getPageNormal(
   if( pPg->pPager && !noContent ){
     /* In this case the pcache already contains an initialized copy of
     ** the page. Return without further ado.  */
-    assert( pgno<=PAGER_MAX_PGNO && pgno!=PAGER_MJ_PGNO(pPager) );
+    assert( pgno!=PAGER_MJ_PGNO(pPager) );
     pPager->aStat[PAGER_STAT_HIT]++;
     return SQLITE_OK;
 
@@ -61453,10 +62487,10 @@ static int getPageNormal(
     /* The pager cache has created a new page. Its content needs to
     ** be initialized. But first some error checks:
     **
-    ** (1) The maximum page number is 2^31
+    ** (*) obsolete.  Was: maximum page number is 2^31
     ** (2) Never try to fetch the locking page
     */
-    if( pgno>PAGER_MAX_PGNO || pgno==PAGER_MJ_PGNO(pPager) ){
+    if( pgno==PAGER_MJ_PGNO(pPager) ){
       rc = SQLITE_CORRUPT_BKPT;
       goto pager_acquire_err;
     }
@@ -61530,9 +62564,11 @@ static int getPageMMap(
   );
 
   assert( USEFETCH(pPager) );
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
   assert( pPager->xCodec==0 );
 #endif
+/* END SQLCIPHER */
 
   /* Optimization note:  Adding the "pgno<=1" term before "pgno==0" here
   ** allows the compiler optimizer to reuse the results of the "pgno>1"
@@ -61663,7 +62699,6 @@ SQLITE_PRIVATE void sqlite3PagerUnrefPageOne(DbPage *pPg){
   assert( pPg->pgno==1 );
   assert( (pPg->flags & PGHDR_MMAP)==0 ); /* Page1 is never memory mapped */
   pPager = pPg->pPager;
-  sqlite3PagerResetLockTimeout(pPager);
   sqlite3PcacheRelease(pPg);
   pagerUnlockIfUnused(pPager);
 }
@@ -61745,7 +62780,7 @@ static int pager_open_journal(Pager *pPager){
       /* TODO: Check if all of these are really required. */
       pPager->nRec = 0;
       pPager->journalOff = 0;
-      pPager->setMaster = 0;
+      pPager->setSuper = 0;
       pPager->journalHdr = 0;
       rc = writeJournalHdr(pPager);
     }
@@ -62257,9 +63292,9 @@ static int pager_incr_changecounter(Pager *pPager, int isDirectMode){
 ** If successful, or if called on a pager for which it is a no-op, this
 ** function returns SQLITE_OK. Otherwise, an IO error code is returned.
 */
-SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager, const char *zMaster){
+SQLITE_PRIVATE int sqlite3PagerSync(Pager *pPager, const char *zSuper){
   int rc = SQLITE_OK;
-  void *pArg = (void*)zMaster;
+  void *pArg = (void*)zSuper;
   rc = sqlite3OsFileControl(pPager->fd, SQLITE_FCNTL_SYNC, pArg);
   if( rc==SQLITE_NOTFOUND ) rc = SQLITE_OK;
   if( rc==SQLITE_OK && !pPager->noSync ){
@@ -62297,10 +63332,10 @@ SQLITE_PRIVATE int sqlite3PagerExclusiveLock(Pager *pPager){
 }
 
 /*
-** Sync the database file for the pager pPager. zMaster points to the name
-** of a master journal file that should be written into the individual
-** journal file. zMaster may be NULL, which is interpreted as no master
-** journal (a single database transaction).
+** Sync the database file for the pager pPager. zSuper points to the name
+** of a super-journal file that should be written into the individual
+** journal file. zSuper may be NULL, which is interpreted as no
+** super-journal (a single database transaction).
 **
 ** This routine ensures that:
 **
@@ -62312,9 +63347,9 @@ SQLITE_PRIVATE int sqlite3PagerExclusiveLock(Pager *pPager){
 **
 ** The only thing that remains to commit the transaction is to finalize
 ** (delete, truncate or zero the first part of) the journal file (or
-** delete the master journal file if specified).
+** delete the super-journal file if specified).
 **
-** Note that if zMaster==NULL, this does not overwrite a previous value
+** Note that if zSuper==NULL, this does not overwrite a previous value
 ** passed to an sqlite3PagerCommitPhaseOne() call.
 **
 ** If the final parameter - noSync - is true, then the database file itself
@@ -62324,7 +63359,7 @@ SQLITE_PRIVATE int sqlite3PagerExclusiveLock(Pager *pPager){
 */
 SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(
   Pager *pPager,                  /* Pager object */
-  const char *zMaster,            /* If not NULL, the master journal name */
+  const char *zSuper,            /* If not NULL, the super-journal name */
   int noSync                      /* True to omit the xSync on the db file */
 ){
   int rc = SQLITE_OK;             /* Return code */
@@ -62342,8 +63377,8 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(
   /* Provide the ability to easily simulate an I/O error during testing */
   if( sqlite3FaultSim(400) ) return SQLITE_IOERR;
 
-  PAGERTRACE(("DATABASE SYNC: File=%s zMaster=%s nSize=%d\n",
-      pPager->zFilename, zMaster, pPager->dbSize));
+  PAGERTRACE(("DATABASE SYNC: File=%s zSuper=%s nSize=%d\n",
+      pPager->zFilename, zSuper, pPager->dbSize));
 
   /* If no database changes have been made, return early. */
   if( pPager->eState<PAGER_WRITER_CACHEMOD ) return SQLITE_OK;
@@ -62382,7 +63417,7 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(
       */
 #ifdef SQLITE_ENABLE_BATCH_ATOMIC_WRITE
       sqlite3_file *fd = pPager->fd;
-      int bBatch = zMaster==0    /* An SQLITE_IOCAP_BATCH_ATOMIC commit */
+      int bBatch = zSuper==0    /* An SQLITE_IOCAP_BATCH_ATOMIC commit */
         && (sqlite3OsDeviceCharacteristics(fd) & SQLITE_IOCAP_BATCH_ATOMIC)
         && !pPager->noSync
         && sqlite3JournalIsInMemory(pPager->jfd);
@@ -62420,7 +63455,7 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(
             || pPager->journalMode==PAGER_JOURNALMODE_OFF
             || pPager->journalMode==PAGER_JOURNALMODE_WAL
             );
-        if( !zMaster && isOpen(pPager->jfd)
+        if( !zSuper && isOpen(pPager->jfd)
          && pPager->journalOff==jrnlBufferSize(pPager)
          && pPager->dbSize>=pPager->dbOrigSize
          && (!(pPg = sqlite3PcacheDirtyList(pPager->pPCache)) || 0==pPg->pDirty)
@@ -62441,7 +63476,7 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(
       }
 #else  /* SQLITE_ENABLE_ATOMIC_WRITE */
 #ifdef SQLITE_ENABLE_BATCH_ATOMIC_WRITE
-      if( zMaster ){
+      if( zSuper ){
         rc = sqlite3JournalCreate(pPager->jfd);
         if( rc!=SQLITE_OK ) goto commit_phase_one_exit;
         assert( bBatch==0 );
@@ -62451,11 +63486,11 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(
 #endif /* !SQLITE_ENABLE_ATOMIC_WRITE */
       if( rc!=SQLITE_OK ) goto commit_phase_one_exit;
 
-      /* Write the master journal name into the journal file. If a master
-      ** journal file name has already been written to the journal file,
-      ** or if zMaster is NULL (no master journal), then this call is a no-op.
+      /* Write the super-journal name into the journal file. If a
+      ** super-journal file name has already been written to the journal file,
+      ** or if zSuper is NULL (no super-journal), then this call is a no-op.
       */
-      rc = writeMasterJournal(pPager, zMaster);
+      rc = writeSuperJournal(pPager, zSuper);
       if( rc!=SQLITE_OK ) goto commit_phase_one_exit;
 
       /* Sync the journal file and write all dirty pages to the database.
@@ -62523,7 +63558,7 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseOne(
 
       /* Finally, sync the database file. */
       if( !noSync ){
-        rc = sqlite3PagerSync(pPager, zMaster);
+        rc = sqlite3PagerSync(pPager, zSuper);
       }
       IOTRACE(("DBSYNC %p\n", pPager))
     }
@@ -62559,6 +63594,7 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseTwo(Pager *pPager){
   ** But if (due to a coding error elsewhere in the system) it does get
   ** called, just return the same error code without doing anything. */
   if( NEVER(pPager->errCode) ) return pPager->errCode;
+  pPager->iDataVersion++;
 
   assert( pPager->eState==PAGER_WRITER_LOCKED
        || pPager->eState==PAGER_WRITER_FINISHED
@@ -62587,8 +63623,7 @@ SQLITE_PRIVATE int sqlite3PagerCommitPhaseTwo(Pager *pPager){
   }
 
   PAGERTRACE(("COMMIT %d\n", PAGERID(pPager)));
-  pPager->iDataVersion++;
-  rc = pager_end_transaction(pPager, pPager->setMaster, 1);
+  rc = pager_end_transaction(pPager, pPager->setSuper, 1);
   return pager_error(pPager, rc);
 }
 
@@ -62633,7 +63668,7 @@ SQLITE_PRIVATE int sqlite3PagerRollback(Pager *pPager){
   if( pagerUseWal(pPager) ){
     int rc2;
     rc = sqlite3PagerSavepoint(pPager, SAVEPOINT_ROLLBACK, -1);
-    rc2 = pager_end_transaction(pPager, pPager->setMaster, 0);
+    rc2 = pager_end_transaction(pPager, pPager->setSuper, 0);
     if( rc==SQLITE_OK ) rc = rc2;
   }else if( !isOpen(pPager->jfd) || pPager->eState==PAGER_WRITER_LOCKED ){
     int eState = pPager->eState;
@@ -62931,9 +63966,13 @@ SQLITE_PRIVATE int sqlite3PagerSavepoint(Pager *pPager, int op, int iSavepoint){
 ** behavior.  But when the Btree needs to know the filename for matching to
 ** shared cache, it uses nullIfMemDb==0 so that in-memory databases can
 ** participate in shared-cache.
+**
+** The return value to this routine is always safe to use with
+** sqlite3_uri_parameter() and sqlite3_filename_database() and friends.
 */
-SQLITE_PRIVATE const char *sqlite3PagerFilename(Pager *pPager, int nullIfMemDb){
-  return (nullIfMemDb && pPager->memDb) ? "" : pPager->zFilename;
+SQLITE_PRIVATE const char *sqlite3PagerFilename(const Pager *pPager, int nullIfMemDb){
+  static const char zFake[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+  return (nullIfMemDb && pPager->memDb) ? &zFake[4] : pPager->zFilename;
 }
 
 /*
@@ -62952,16 +63991,6 @@ SQLITE_PRIVATE sqlite3_file *sqlite3PagerFile(Pager *pPager){
   return pPager->fd;
 }
 
-#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
-/*
-** Reset the lock timeout for pager.
-*/
-SQLITE_PRIVATE void sqlite3PagerResetLockTimeout(Pager *pPager){
-  int x = 0;
-  sqlite3OsFileControl(pPager->fd, SQLITE_FCNTL_LOCK_TIMEOUT, &x);
-}
-#endif
-
 /*
 ** Return the file handle for the journal file (if it exists).
 ** This will be either the rollback journal or the WAL file.
@@ -62981,6 +64010,7 @@ SQLITE_PRIVATE const char *sqlite3PagerJournalname(Pager *pPager){
   return pPager->zJournal;
 }
 
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
 /*
 ** Set or retrieve the codec for this pager
@@ -63020,7 +64050,15 @@ SQLITE_PRIVATE void *sqlite3PagerCodec(PgHdr *pPg){
   CODEC2(pPg->pPager, pPg->pData, pPg->pgno, 6, return 0, aData);
   return aData;
 }
+
+/*
+** Return the current pager state
+*/
+SQLITE_PRIVATE int sqlite3PagerState(Pager *pPager){
+  return pPager->eState;
+}
 #endif /* SQLITE_HAS_CODEC */
+/* END SQLCIPHER */
 
 #ifndef SQLITE_OMIT_AUTOVACUUM
 /*
@@ -63416,7 +64454,6 @@ SQLITE_PRIVATE int sqlite3PagerCheckpoint(
         pPager->walSyncFlags, pPager->pageSize, (u8 *)pPager->pTmpSpace,
         pnLog, pnCkpt
     );
-    sqlite3PagerResetLockTimeout(pPager);
   }
   return rc;
 }
@@ -63581,6 +64618,32 @@ SQLITE_PRIVATE int sqlite3PagerCloseWal(Pager *pPager, sqlite3 *db){
   return rc;
 }
 
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+/*
+** If pager pPager is a wal-mode database not in exclusive locking mode,
+** invoke the sqlite3WalWriteLock() function on the associated Wal object
+** with the same db and bLock parameters as were passed to this function.
+** Return an SQLite error code if an error occurs, or SQLITE_OK otherwise.
+*/
+SQLITE_PRIVATE int sqlite3PagerWalWriteLock(Pager *pPager, int bLock){
+  int rc = SQLITE_OK;
+  if( pagerUseWal(pPager) && pPager->exclusiveMode==0 ){
+    rc = sqlite3WalWriteLock(pPager->pWal, bLock);
+  }
+  return rc;
+}
+
+/*
+** Set the database handle used by the wal layer to determine if
+** blocking locks are required.
+*/
+SQLITE_PRIVATE void sqlite3PagerWalDb(Pager *pPager, sqlite3 *db){
+  if( pagerUseWal(pPager) ){
+    sqlite3WalDb(pPager->pWal, db);
+  }
+}
+#endif
+
 #ifdef SQLITE_ENABLE_SNAPSHOT
 /*
 ** If this is a WAL database, obtain a snapshot handle for the snapshot
@@ -63599,7 +64662,10 @@ SQLITE_PRIVATE int sqlite3PagerSnapshotGet(Pager *pPager, sqlite3_snapshot **ppS
 ** read transaction is opened, attempt to read from the snapshot it
 ** identifies. If this is not a WAL database, return an error.
 */
-SQLITE_PRIVATE int sqlite3PagerSnapshotOpen(Pager *pPager, sqlite3_snapshot *pSnapshot){
+SQLITE_PRIVATE int sqlite3PagerSnapshotOpen(
+  Pager *pPager,
+  sqlite3_snapshot *pSnapshot
+){
   int rc = SQLITE_OK;
   if( pPager->pWal ){
     sqlite3WalSnapshotOpen(pPager->pWal, pSnapshot);
@@ -63957,18 +65023,6 @@ SQLITE_PRIVATE int sqlite3WalTrace = 0;
 #endif
 
 /*
-** WAL mode depends on atomic aligned 32-bit loads and stores in a few
-** places.  The following macros try to make this explicit.
-*/
-#if GCC_VESRION>=5004000
-# define AtomicLoad(PTR)       __atomic_load_n((PTR),__ATOMIC_RELAXED)
-# define AtomicStore(PTR,VAL)  __atomic_store_n((PTR),(VAL),__ATOMIC_RELAXED)
-#else
-# define AtomicLoad(PTR)       (*(PTR))
-# define AtomicStore(PTR,VAL)  (*(PTR) = (VAL))
-#endif
-
-/*
 ** The maximum (and only) versions of the wal and wal-index formats
 ** that may be interpreted by this version of SQLite.
 **
@@ -64177,6 +65231,9 @@ struct Wal {
 #ifdef SQLITE_ENABLE_SNAPSHOT
   WalIndexHdr *pSnapshot;    /* Start transaction here if not NULL */
 #endif
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+  sqlite3 *db;
+#endif
 };
 
 /*
@@ -64215,7 +65272,7 @@ typedef u16 ht_slot;
 ** This functionality is used by the checkpoint code (see walCheckpoint()).
 */
 struct WalIterator {
-  int iPrior;                     /* Last result returned from the iterator */
+  u32 iPrior;                     /* Last result returned from the iterator */
   int nSegment;                   /* Number of entries in aSegment[] */
   struct WalSegment {
     int iNext;                    /* Next slot in aIndex[] not yet returned */
@@ -64275,7 +65332,7 @@ static SQLITE_NOINLINE int walIndexPageRealloc(
   if( pWal->nWiData<=iPage ){
     sqlite3_int64 nByte = sizeof(u32*)*(iPage+1);
     volatile u32 **apNew;
-    apNew = (volatile u32 **)sqlite3_realloc64((void *)pWal->apWiData, nByte);
+    apNew = (volatile u32 **)sqlite3Realloc((void *)pWal->apWiData, nByte);
     if( !apNew ){
       *ppPage = 0;
       return SQLITE_NOMEM_BKPT;
@@ -64297,7 +65354,9 @@ static SQLITE_NOINLINE int walIndexPageRealloc(
     );
     assert( pWal->apWiData[iPage]!=0 || rc!=SQLITE_OK || pWal->writeLock==0 );
     testcase( pWal->apWiData[iPage]==0 && rc==SQLITE_OK );
-    if( (rc&0xff)==SQLITE_READONLY ){
+    if( rc==SQLITE_OK ){
+      if( iPage>0 && sqlite3FaultSim(600) ) rc = SQLITE_NOMEM;
+    }else if( (rc&0xff)==SQLITE_READONLY ){
       pWal->readOnly |= WAL_SHM_RDONLY;
       if( rc==SQLITE_READONLY ){
         rc = SQLITE_OK;
@@ -64396,6 +65455,10 @@ static void walChecksumBytes(
   aOut[1] = s2;
 }
 
+/*
+** If there is the possibility of concurrent access to the SHM file
+** from multiple threads and/or processes, then do a memory barrier.
+*/
 static void walShmBarrier(Wal *pWal){
   if( pWal->exclusiveMode!=WAL_HEAPMEMORY_MODE ){
     sqlite3OsShmBarrier(pWal->pDbFd);
@@ -64403,11 +65466,24 @@ static void walShmBarrier(Wal *pWal){
 }
 
 /*
+** Add the SQLITE_NO_TSAN as part of the return-type of a function
+** definition as a hint that the function contains constructs that
+** might give false-positive TSAN warnings.
+**
+** See tag-20200519-1.
+*/
+#if defined(__clang__) && !defined(SQLITE_NO_TSAN)
+# define SQLITE_NO_TSAN __attribute__((no_sanitize_thread))
+#else
+# define SQLITE_NO_TSAN
+#endif
+
+/*
 ** Write the header information in pWal->hdr into the wal-index.
 **
 ** The checksum on pWal->hdr is updated before it is written.
 */
-static void walIndexWriteHdr(Wal *pWal){
+static SQLITE_NO_TSAN void walIndexWriteHdr(Wal *pWal){
   volatile WalIndexHdr *aHdr = walIndexHdr(pWal);
   const int nCksum = offsetof(WalIndexHdr, aCksum);
 
@@ -64415,6 +65491,7 @@ static void walIndexWriteHdr(Wal *pWal){
   pWal->hdr.isInit = 1;
   pWal->hdr.iVersion = WALINDEX_MAX_VERSION;
   walChecksumBytes(1, (u8*)&pWal->hdr, nCksum, 0, pWal->hdr.aCksum);
+  /* Possible TSAN false-positive.  See tag-20200519-1 */
   memcpy((void*)&aHdr[1], (const void*)&pWal->hdr, sizeof(WalIndexHdr));
   walShmBarrier(pWal);
   memcpy((void*)&aHdr[0], (const void*)&pWal->hdr, sizeof(WalIndexHdr));
@@ -64550,7 +65627,7 @@ static int walLockShared(Wal *pWal, int lockIdx){
                         SQLITE_SHM_LOCK | SQLITE_SHM_SHARED);
   WALTRACE(("WAL%p: acquire SHARED-%s %s\n", pWal,
             walLockName(lockIdx), rc ? "failed" : "ok"));
-  VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && rc!=SQLITE_BUSY); )
+  VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && (rc&0xFF)!=SQLITE_BUSY); )
   return rc;
 }
 static void walUnlockShared(Wal *pWal, int lockIdx){
@@ -64566,7 +65643,7 @@ static int walLockExclusive(Wal *pWal, int lockIdx, int n){
                         SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE);
   WALTRACE(("WAL%p: acquire EXCLUSIVE-%s cnt=%d %s\n", pWal,
             walLockName(lockIdx), n, rc ? "failed" : "ok"));
-  VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && rc!=SQLITE_BUSY); )
+  VVA_ONLY( pWal->lockError = (u8)(rc!=SQLITE_OK && (rc&0xFF)!=SQLITE_BUSY); )
   return rc;
 }
 static void walUnlockExclusive(Wal *pWal, int lockIdx, int n){
@@ -64654,6 +65731,7 @@ static int walFramePage(u32 iFrame){
        && (iHash>=2 || iFrame<=HASHTABLE_NPAGE_ONE+HASHTABLE_NPAGE)
        && (iHash<=2 || iFrame>(HASHTABLE_NPAGE_ONE+2*HASHTABLE_NPAGE))
   );
+  assert( iHash>=0 );
   return iHash;
 }
 
@@ -64785,7 +65863,7 @@ static int walIndexAppend(Wal *pWal, u32 iFrame, u32 iPage){
       if( (nCollide--)==0 ) return SQLITE_CORRUPT_BKPT;
     }
     sLoc.aPgno[idx] = iPage;
-    sLoc.aHash[iKey] = (ht_slot)idx;
+    AtomicStore(&sLoc.aHash[iKey], (ht_slot)idx);
 
 #ifdef SQLITE_ENABLE_EXPENSIVE_ASSERT
     /* Verify that the number of entries in the hash table exactly equals
@@ -64850,12 +65928,6 @@ static int walIndexRecover(Wal *pWal){
   assert( pWal->writeLock );
   iLock = WAL_ALL_BUT_WRITE + pWal->ckptLock;
   rc = walLockExclusive(pWal, iLock, WAL_READ_LOCK(0)-iLock);
-  if( rc==SQLITE_OK ){
-    rc = walLockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1);
-    if( rc!=SQLITE_OK ){
-      walUnlockExclusive(pWal, iLock, WAL_READ_LOCK(0)-iLock);
-    }
-  }
   if( rc ){
     return rc;
   }
@@ -64871,15 +65943,16 @@ static int walIndexRecover(Wal *pWal){
 
   if( nSize>WAL_HDRSIZE ){
     u8 aBuf[WAL_HDRSIZE];         /* Buffer to load WAL header into */
+    u32 *aPrivate = 0;            /* Heap copy of *-shm hash being populated */
     u8 *aFrame = 0;               /* Malloc'd buffer to load entire frame */
     int szFrame;                  /* Number of bytes in buffer aFrame[] */
     u8 *aData;                    /* Pointer to data part of aFrame buffer */
-    int iFrame;                   /* Index of last frame read */
-    i64 iOffset;                  /* Next offset to read from log file */
     int szPage;                   /* Page size according to the log */
     u32 magic;                    /* Magic value read from WAL header */
     u32 version;                  /* Magic value read from WAL header */
     int isValid;                  /* True if this frame is valid */
+    u32 iPg;                      /* Current 32KB wal-index page */
+    u32 iLastFrame;               /* Last frame in wal, based on nSize alone */
 
     /* Read in the WAL header. */
     rc = sqlite3OsRead(pWal->pWalFd, aBuf, WAL_HDRSIZE, 0);
@@ -64926,38 +65999,82 @@ static int walIndexRecover(Wal *pWal){
 
     /* Malloc a buffer to read frames into. */
     szFrame = szPage + WAL_FRAME_HDRSIZE;
-    aFrame = (u8 *)sqlite3_malloc64(szFrame);
+    aFrame = (u8 *)sqlite3_malloc64(szFrame + WALINDEX_PGSZ);
     if( !aFrame ){
       rc = SQLITE_NOMEM_BKPT;
       goto recovery_error;
     }
     aData = &aFrame[WAL_FRAME_HDRSIZE];
+    aPrivate = (u32*)&aData[szPage];
 
     /* Read all frames from the log file. */
-    iFrame = 0;
-    for(iOffset=WAL_HDRSIZE; (iOffset+szFrame)<=nSize; iOffset+=szFrame){
-      u32 pgno;                   /* Database page number for frame */
-      u32 nTruncate;              /* dbsize field from frame header */
-
-      /* Read and decode the next log frame. */
-      iFrame++;
-      rc = sqlite3OsRead(pWal->pWalFd, aFrame, szFrame, iOffset);
-      if( rc!=SQLITE_OK ) break;
-      isValid = walDecodeFrame(pWal, &pgno, &nTruncate, aData, aFrame);
-      if( !isValid ) break;
-      rc = walIndexAppend(pWal, iFrame, pgno);
-      if( rc!=SQLITE_OK ) break;
+    iLastFrame = (nSize - WAL_HDRSIZE) / szFrame;
+    for(iPg=0; iPg<=(u32)walFramePage(iLastFrame); iPg++){
+      u32 *aShare;
+      u32 iFrame;                 /* Index of last frame read */
+      u32 iLast = MIN(iLastFrame, HASHTABLE_NPAGE_ONE+iPg*HASHTABLE_NPAGE);
+      u32 iFirst = 1 + (iPg==0?0:HASHTABLE_NPAGE_ONE+(iPg-1)*HASHTABLE_NPAGE);
+      u32 nHdr, nHdr32;
+      rc = walIndexPage(pWal, iPg, (volatile u32**)&aShare);
+      if( rc ) break;
+      pWal->apWiData[iPg] = aPrivate;
+
+      for(iFrame=iFirst; iFrame<=iLast; iFrame++){
+        i64 iOffset = walFrameOffset(iFrame, szPage);
+        u32 pgno;                 /* Database page number for frame */
+        u32 nTruncate;            /* dbsize field from frame header */
 
-      /* If nTruncate is non-zero, this is a commit record. */
-      if( nTruncate ){
-        pWal->hdr.mxFrame = iFrame;
-        pWal->hdr.nPage = nTruncate;
-        pWal->hdr.szPage = (u16)((szPage&0xff00) | (szPage>>16));
-        testcase( szPage<=32768 );
-        testcase( szPage>=65536 );
-        aFrameCksum[0] = pWal->hdr.aFrameCksum[0];
-        aFrameCksum[1] = pWal->hdr.aFrameCksum[1];
+        /* Read and decode the next log frame. */
+        rc = sqlite3OsRead(pWal->pWalFd, aFrame, szFrame, iOffset);
+        if( rc!=SQLITE_OK ) break;
+        isValid = walDecodeFrame(pWal, &pgno, &nTruncate, aData, aFrame);
+        if( !isValid ) break;
+        rc = walIndexAppend(pWal, iFrame, pgno);
+        if( NEVER(rc!=SQLITE_OK) ) break;
+
+        /* If nTruncate is non-zero, this is a commit record. */
+        if( nTruncate ){
+          pWal->hdr.mxFrame = iFrame;
+          pWal->hdr.nPage = nTruncate;
+          pWal->hdr.szPage = (u16)((szPage&0xff00) | (szPage>>16));
+          testcase( szPage<=32768 );
+          testcase( szPage>=65536 );
+          aFrameCksum[0] = pWal->hdr.aFrameCksum[0];
+          aFrameCksum[1] = pWal->hdr.aFrameCksum[1];
+        }
+      }
+      pWal->apWiData[iPg] = aShare;
+      nHdr = (iPg==0 ? WALINDEX_HDR_SIZE : 0);
+      nHdr32 = nHdr / sizeof(u32);
+#ifndef SQLITE_SAFER_WALINDEX_RECOVERY
+      /* Memcpy() should work fine here, on all reasonable implementations.
+      ** Technically, memcpy() might change the destination to some
+      ** intermediate value before setting to the final value, and that might
+      ** cause a concurrent reader to malfunction.  Memcpy() is allowed to
+      ** do that, according to the spec, but no memcpy() implementation that
+      ** we know of actually does that, which is why we say that memcpy()
+      ** is safe for this.  Memcpy() is certainly a lot faster.
+      */
+      memcpy(&aShare[nHdr32], &aPrivate[nHdr32], WALINDEX_PGSZ-nHdr);
+#else
+      /* In the event that some platform is found for which memcpy()
+      ** changes the destination to some intermediate value before
+      ** setting the final value, this alternative copy routine is
+      ** provided.
+      */
+      {
+        int i;
+        for(i=nHdr32; i<WALINDEX_PGSZ/sizeof(u32); i++){
+          if( aShare[i]!=aPrivate[i] ){
+            /* Atomic memory operations are not required here because if
+            ** the value needs to be changed, that means it is not being
+            ** accessed concurrently. */
+            aShare[i] = aPrivate[i];
+          }
+        }
       }
+#endif
+      if( iFrame<=iLast ) break;
     }
 
     sqlite3_free(aFrame);
@@ -64972,15 +66089,26 @@ finished:
     walIndexWriteHdr(pWal);
 
     /* Reset the checkpoint-header. This is safe because this thread is
-    ** currently holding locks that exclude all other readers, writers and
-    ** checkpointers.
+    ** currently holding locks that exclude all other writers and
+    ** checkpointers. Then set the values of read-mark slots 1 through N.
     */
     pInfo = walCkptInfo(pWal);
     pInfo->nBackfill = 0;
     pInfo->nBackfillAttempted = pWal->hdr.mxFrame;
     pInfo->aReadMark[0] = 0;
-    for(i=1; i<WAL_NREADER; i++) pInfo->aReadMark[i] = READMARK_NOT_USED;
-    if( pWal->hdr.mxFrame ) pInfo->aReadMark[1] = pWal->hdr.mxFrame;
+    for(i=1; i<WAL_NREADER; i++){
+      rc = walLockExclusive(pWal, WAL_READ_LOCK(i), 1);
+      if( rc==SQLITE_OK ){
+        if( i==1 && pWal->hdr.mxFrame ){
+          pInfo->aReadMark[i] = pWal->hdr.mxFrame;
+        }else{
+          pInfo->aReadMark[i] = READMARK_NOT_USED;
+        }
+        walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1);
+      }else if( rc!=SQLITE_BUSY ){
+        goto recovery_error;
+      }
+    }
 
     /* If more than one frame was recovered from the log file, report an
     ** event via sqlite3_log(). This is to help with identifying performance
@@ -64998,7 +66126,6 @@ finished:
 recovery_error:
   WALTRACE(("WAL%p: recovery %s\n", pWal, rc ? "failed" : "ok"));
   walUnlockExclusive(pWal, iLock, WAL_READ_LOCK(0)-iLock);
-  walUnlockExclusive(pWal, WAL_READ_LOCK(1), WAL_NREADER-1);
   return rc;
 }
 
@@ -65386,6 +66513,89 @@ static int walIteratorInit(Wal *pWal, u32 nBackfill, WalIterator **pp){
   return rc;
 }
 
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+/*
+** Attempt to enable blocking locks. Blocking locks are enabled only if (a)
+** they are supported by the VFS, and (b) the database handle is configured
+** with a busy-timeout. Return 1 if blocking locks are successfully enabled,
+** or 0 otherwise.
+*/
+static int walEnableBlocking(Wal *pWal){
+  int res = 0;
+  if( pWal->db ){
+    int tmout = pWal->db->busyTimeout;
+    if( tmout ){
+      int rc;
+      rc = sqlite3OsFileControl(
+          pWal->pDbFd, SQLITE_FCNTL_LOCK_TIMEOUT, (void*)&tmout
+      );
+      res = (rc==SQLITE_OK);
+    }
+  }
+  return res;
+}
+
+/*
+** Disable blocking locks.
+*/
+static void walDisableBlocking(Wal *pWal){
+  int tmout = 0;
+  sqlite3OsFileControl(pWal->pDbFd, SQLITE_FCNTL_LOCK_TIMEOUT, (void*)&tmout);
+}
+
+/*
+** If parameter bLock is true, attempt to enable blocking locks, take
+** the WRITER lock, and then disable blocking locks. If blocking locks
+** cannot be enabled, no attempt to obtain the WRITER lock is made. Return
+** an SQLite error code if an error occurs, or SQLITE_OK otherwise. It is not
+** an error if blocking locks can not be enabled.
+**
+** If the bLock parameter is false and the WRITER lock is held, release it.
+*/
+SQLITE_PRIVATE int sqlite3WalWriteLock(Wal *pWal, int bLock){
+  int rc = SQLITE_OK;
+  assert( pWal->readLock<0 || bLock==0 );
+  if( bLock ){
+    assert( pWal->db );
+    if( walEnableBlocking(pWal) ){
+      rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1);
+      if( rc==SQLITE_OK ){
+        pWal->writeLock = 1;
+      }
+      walDisableBlocking(pWal);
+    }
+  }else if( pWal->writeLock ){
+    walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1);
+    pWal->writeLock = 0;
+  }
+  return rc;
+}
+
+/*
+** Set the database handle used to determine if blocking locks are required.
+*/
+SQLITE_PRIVATE void sqlite3WalDb(Wal *pWal, sqlite3 *db){
+  pWal->db = db;
+}
+
+/*
+** Take an exclusive WRITE lock. Blocking if so configured.
+*/
+static int walLockWriter(Wal *pWal){
+  int rc;
+  walEnableBlocking(pWal);
+  rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1);
+  walDisableBlocking(pWal);
+  return rc;
+}
+#else
+# define walEnableBlocking(x) 0
+# define walDisableBlocking(x)
+# define walLockWriter(pWal) walLockExclusive((pWal), WAL_WRITE_LOCK, 1)
+# define sqlite3WalDb(pWal, db)
+#endif   /* ifdef SQLITE_ENABLE_SETLK_TIMEOUT */
+
+
 /*
 ** Attempt to obtain the exclusive WAL lock defined by parameters lockIdx and
 ** n. If the attempt fails and parameter xBusy is not NULL, then it is a
@@ -65403,6 +66613,12 @@ static int walBusyLock(
   do {
     rc = walLockExclusive(pWal, lockIdx, n);
   }while( xBusy && rc==SQLITE_BUSY && xBusy(pBusyArg) );
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+  if( rc==SQLITE_BUSY_TIMEOUT ){
+    walDisableBlocking(pWal);
+    rc = SQLITE_BUSY;
+  }
+#endif
   return rc;
 }
 
@@ -65440,7 +66656,7 @@ static void walRestartHdr(Wal *pWal, u32 salt1){
   sqlite3Put4byte((u8*)&aSalt[0], 1 + sqlite3Get4byte((u8*)&aSalt[0]));
   memcpy(&pWal->hdr.aSalt[1], &salt1, 4);
   walIndexWriteHdr(pWal);
-  pInfo->nBackfill = 0;
+  AtomicStore(&pInfo->nBackfill, 0);
   pInfo->nBackfillAttempted = 0;
   pInfo->aReadMark[1] = 0;
   for(i=2; i<WAL_NREADER; i++) pInfo->aReadMark[i] = READMARK_NOT_USED;
@@ -65515,20 +66731,13 @@ static int walCheckpoint(
     mxSafeFrame = pWal->hdr.mxFrame;
     mxPage = pWal->hdr.nPage;
     for(i=1; i<WAL_NREADER; i++){
-      /* Thread-sanitizer reports that the following is an unsafe read,
-      ** as some other thread may be in the process of updating the value
-      ** of the aReadMark[] slot. The assumption here is that if that is
-      ** happening, the other client may only be increasing the value,
-      ** not decreasing it. So assuming either that either the "old" or
-      ** "new" version of the value is read, and not some arbitrary value
-      ** that would never be written by a real client, things are still
-      ** safe.  */
-      u32 y = pInfo->aReadMark[i];
+      u32 y = AtomicLoad(pInfo->aReadMark+i);
       if( mxSafeFrame>y ){
         assert( y<=pWal->hdr.mxFrame );
         rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(i), 1);
         if( rc==SQLITE_OK ){
-          pInfo->aReadMark[i] = (i==1 ? mxSafeFrame : READMARK_NOT_USED);
+          u32 iMark = (i==1 ? mxSafeFrame : READMARK_NOT_USED);
+          AtomicStore(pInfo->aReadMark+i, iMark);
           walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1);
         }else if( rc==SQLITE_BUSY ){
           mxSafeFrame = y;
@@ -65546,7 +66755,7 @@ static int walCheckpoint(
     }
 
     if( pIter
-     && (rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_READ_LOCK(0),1))==SQLITE_OK
+     && (rc = walBusyLock(pWal,xBusy,pBusyArg,WAL_READ_LOCK(0),1))==SQLITE_OK
     ){
       u32 nBackfill = pInfo->nBackfill;
 
@@ -65561,18 +66770,27 @@ static int walCheckpoint(
       if( rc==SQLITE_OK ){
         i64 nReq = ((i64)mxPage * szPage);
         i64 nSize;                    /* Current size of database file */
+        sqlite3OsFileControl(pWal->pDbFd, SQLITE_FCNTL_CKPT_START, 0);
         rc = sqlite3OsFileSize(pWal->pDbFd, &nSize);
         if( rc==SQLITE_OK && nSize<nReq ){
-          sqlite3OsFileControlHint(pWal->pDbFd, SQLITE_FCNTL_SIZE_HINT, &nReq);
+          if( (nSize+65536+(i64)pWal->hdr.mxFrame*szPage)<nReq ){
+            /* If the size of the final database is larger than the current
+            ** database plus the amount of data in the wal file, plus the
+            ** maximum size of the pending-byte page (65536 bytes), then
+            ** must be corruption somewhere.  */
+            rc = SQLITE_CORRUPT_BKPT;
+          }else{
+            sqlite3OsFileControlHint(pWal->pDbFd, SQLITE_FCNTL_SIZE_HINT,&nReq);
+          }
         }
-      }
 
+      }
 
       /* Iterate through the contents of the WAL, copying data to the db file */
       while( rc==SQLITE_OK && 0==walIteratorNext(pIter, &iDbpage, &iFrame) ){
         i64 iOffset;
         assert( walFramePgno(pWal, iFrame)==iDbpage );
-        if( db->u1.isInterrupted ){
+        if( AtomicLoad(&db->u1.isInterrupted) ){
           rc = db->mallocFailed ? SQLITE_NOMEM_BKPT : SQLITE_INTERRUPT;
           break;
         }
@@ -65588,6 +66806,7 @@ static int walCheckpoint(
         rc = sqlite3OsWrite(pWal->pDbFd, zBuf, szPage, iOffset);
         if( rc!=SQLITE_OK ) break;
       }
+      sqlite3OsFileControl(pWal->pDbFd, SQLITE_FCNTL_CKPT_DONE, 0);
 
       /* If work was actually accomplished... */
       if( rc==SQLITE_OK ){
@@ -65600,7 +66819,7 @@ static int walCheckpoint(
           }
         }
         if( rc==SQLITE_OK ){
-          pInfo->nBackfill = mxSafeFrame;
+          AtomicStore(&pInfo->nBackfill, mxSafeFrame);
         }
       }
 
@@ -65759,7 +66978,7 @@ SQLITE_PRIVATE int sqlite3WalClose(
 ** If the checksum cannot be verified return non-zero. If the header
 ** is read successfully and the checksum verified, return zero.
 */
-static int walIndexTryHdr(Wal *pWal, int *pChanged){
+static SQLITE_NO_TSAN int walIndexTryHdr(Wal *pWal, int *pChanged){
   u32 aCksum[2];                  /* Checksum on the header content */
   WalIndexHdr h1, h2;             /* Two copies of the header content */
   WalIndexHdr volatile *aHdr;     /* Header in shared memory */
@@ -65772,13 +66991,19 @@ static int walIndexTryHdr(Wal *pWal, int *pChanged){
   ** meaning it is possible that an inconsistent snapshot is read
   ** from the file. If this happens, return non-zero.
   **
+  ** tag-20200519-1:
   ** There are two copies of the header at the beginning of the wal-index.
   ** When reading, read [0] first then [1].  Writes are in the reverse order.
   ** Memory barriers are used to prevent the compiler or the hardware from
-  ** reordering the reads and writes.
+  ** reordering the reads and writes.  TSAN and similar tools can sometimes
+  ** give false-positive warnings about these accesses because the tools do not
+  ** account for the double-read and the memory barrier. The use of mutexes
+  ** here would be problematic as the memory being accessed is potentially
+  ** shared among multiple processes and not all mutex implementions work
+  ** reliably in that environment.
   */
   aHdr = walIndexHdr(pWal);
-  memcpy(&h1, (void *)&aHdr[0], sizeof(h1));
+  memcpy(&h1, (void *)&aHdr[0], sizeof(h1)); /* Possible TSAN false-positive */
   walShmBarrier(pWal);
   memcpy(&h2, (void *)&aHdr[1], sizeof(h2));
 
@@ -65868,28 +67093,32 @@ static int walIndexReadHdr(Wal *pWal, int *pChanged){
   /* If the first attempt failed, it might have been due to a race
   ** with a writer.  So get a WRITE lock and try again.
   */
-  assert( badHdr==0 || pWal->writeLock==0 );
   if( badHdr ){
     if( pWal->bShmUnreliable==0 && (pWal->readOnly & WAL_SHM_RDONLY) ){
       if( SQLITE_OK==(rc = walLockShared(pWal, WAL_WRITE_LOCK)) ){
         walUnlockShared(pWal, WAL_WRITE_LOCK);
         rc = SQLITE_READONLY_RECOVERY;
       }
-    }else if( SQLITE_OK==(rc = walLockExclusive(pWal, WAL_WRITE_LOCK, 1)) ){
-      pWal->writeLock = 1;
-      if( SQLITE_OK==(rc = walIndexPage(pWal, 0, &page0)) ){
-        badHdr = walIndexTryHdr(pWal, pChanged);
-        if( badHdr ){
-          /* If the wal-index header is still malformed even while holding
-          ** a WRITE lock, it can only mean that the header is corrupted and
-          ** needs to be reconstructed.  So run recovery to do exactly that.
-          */
-          rc = walIndexRecover(pWal);
-          *pChanged = 1;
+    }else{
+      int bWriteLock = pWal->writeLock;
+      if( bWriteLock || SQLITE_OK==(rc = walLockWriter(pWal)) ){
+        pWal->writeLock = 1;
+        if( SQLITE_OK==(rc = walIndexPage(pWal, 0, &page0)) ){
+          badHdr = walIndexTryHdr(pWal, pChanged);
+          if( badHdr ){
+            /* If the wal-index header is still malformed even while holding
+            ** a WRITE lock, it can only mean that the header is corrupted and
+            ** needs to be reconstructed.  So run recovery to do exactly that.
+            */
+            rc = walIndexRecover(pWal);
+            *pChanged = 1;
+          }
+        }
+        if( bWriteLock==0 ){
+          pWal->writeLock = 0;
+          walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1);
         }
       }
-      pWal->writeLock = 0;
-      walUnlockExclusive(pWal, WAL_WRITE_LOCK, 1);
     }
   }
 
@@ -66219,7 +67448,7 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){
   assert( pWal->nWiData>0 );
   assert( pWal->apWiData[0]!=0 );
   pInfo = walCkptInfo(pWal);
-  if( !useWal && pInfo->nBackfill==pWal->hdr.mxFrame
+  if( !useWal && AtomicLoad(&pInfo->nBackfill)==pWal->hdr.mxFrame
 #ifdef SQLITE_ENABLE_SNAPSHOT
    && (pWal->pSnapshot==0 || pWal->hdr.mxFrame==0)
 #endif
@@ -66281,7 +67510,8 @@ static int walTryBeginRead(Wal *pWal, int *pChanged, int useWal, int cnt){
     for(i=1; i<WAL_NREADER; i++){
       rc = walLockExclusive(pWal, WAL_READ_LOCK(i), 1);
       if( rc==SQLITE_OK ){
-        mxReadMark = AtomicStore(pInfo->aReadMark+i,mxFrame);
+        AtomicStore(pInfo->aReadMark+i,mxFrame);
+        mxReadMark = mxFrame;
         mxI = i;
         walUnlockExclusive(pWal, WAL_READ_LOCK(i), 1);
         break;
@@ -66385,7 +67615,7 @@ SQLITE_PRIVATE int sqlite3WalSnapshotRecover(Wal *pWal){
         rc = SQLITE_NOMEM;
       }else{
         u32 i = pInfo->nBackfillAttempted;
-        for(i=pInfo->nBackfillAttempted; i>pInfo->nBackfill; i--){
+        for(i=pInfo->nBackfillAttempted; i>AtomicLoad(&pInfo->nBackfill); i--){
           WalHashLoc sLoc;          /* Hash table location */
           u32 pgno;                 /* Page number in db file */
           i64 iDbOff;               /* Offset of db file entry */
@@ -66440,12 +67670,35 @@ SQLITE_PRIVATE int sqlite3WalSnapshotRecover(Wal *pWal){
 SQLITE_PRIVATE int sqlite3WalBeginReadTransaction(Wal *pWal, int *pChanged){
   int rc;                         /* Return code */
   int cnt = 0;                    /* Number of TryBeginRead attempts */
-
 #ifdef SQLITE_ENABLE_SNAPSHOT
   int bChanged = 0;
   WalIndexHdr *pSnapshot = pWal->pSnapshot;
-  if( pSnapshot && memcmp(pSnapshot, &pWal->hdr, sizeof(WalIndexHdr))!=0 ){
-    bChanged = 1;
+#endif
+
+  assert( pWal->ckptLock==0 );
+
+#ifdef SQLITE_ENABLE_SNAPSHOT
+  if( pSnapshot ){
+    if( memcmp(pSnapshot, &pWal->hdr, sizeof(WalIndexHdr))!=0 ){
+      bChanged = 1;
+    }
+
+    /* It is possible that there is a checkpointer thread running
+    ** concurrent with this code. If this is the case, it may be that the
+    ** checkpointer has already determined that it will checkpoint
+    ** snapshot X, where X is later in the wal file than pSnapshot, but
+    ** has not yet set the pInfo->nBackfillAttempted variable to indicate
+    ** its intent. To avoid the race condition this leads to, ensure that
+    ** there is no checkpointer process by taking a shared CKPT lock
+    ** before checking pInfo->nBackfillAttempted.  */
+    (void)walEnableBlocking(pWal);
+    rc = walLockShared(pWal, WAL_CKPT_LOCK);
+    walDisableBlocking(pWal);
+
+    if( rc!=SQLITE_OK ){
+      return rc;
+    }
+    pWal->ckptLock = 1;
   }
 #endif
 
@@ -66478,48 +67731,42 @@ SQLITE_PRIVATE int sqlite3WalBeginReadTransaction(Wal *pWal, int *pChanged){
       assert( pWal->readLock>0 || pWal->hdr.mxFrame==0 );
       assert( pInfo->aReadMark[pWal->readLock]<=pSnapshot->mxFrame );
 
-      /* It is possible that there is a checkpointer thread running
-      ** concurrent with this code. If this is the case, it may be that the
-      ** checkpointer has already determined that it will checkpoint
-      ** snapshot X, where X is later in the wal file than pSnapshot, but
-      ** has not yet set the pInfo->nBackfillAttempted variable to indicate
-      ** its intent. To avoid the race condition this leads to, ensure that
-      ** there is no checkpointer process by taking a shared CKPT lock
-      ** before checking pInfo->nBackfillAttempted.
-      **
-      ** TODO: Does the aReadMark[] lock prevent a checkpointer from doing
-      **       this already?
-      */
-      rc = walLockShared(pWal, WAL_CKPT_LOCK);
-
-      if( rc==SQLITE_OK ){
-        /* Check that the wal file has not been wrapped. Assuming that it has
-        ** not, also check that no checkpointer has attempted to checkpoint any
-        ** frames beyond pSnapshot->mxFrame. If either of these conditions are
-        ** true, return SQLITE_ERROR_SNAPSHOT. Otherwise, overwrite pWal->hdr
-        ** with *pSnapshot and set *pChanged as appropriate for opening the
-        ** snapshot.  */
-        if( !memcmp(pSnapshot->aSalt, pWal->hdr.aSalt, sizeof(pWal->hdr.aSalt))
-         && pSnapshot->mxFrame>=pInfo->nBackfillAttempted
-        ){
-          assert( pWal->readLock>0 );
-          memcpy(&pWal->hdr, pSnapshot, sizeof(WalIndexHdr));
-          *pChanged = bChanged;
-        }else{
-          rc = SQLITE_ERROR_SNAPSHOT;
-        }
-
-        /* Release the shared CKPT lock obtained above. */
-        walUnlockShared(pWal, WAL_CKPT_LOCK);
-        pWal->minFrame = 1;
+      /* Check that the wal file has not been wrapped. Assuming that it has
+      ** not, also check that no checkpointer has attempted to checkpoint any
+      ** frames beyond pSnapshot->mxFrame. If either of these conditions are
+      ** true, return SQLITE_ERROR_SNAPSHOT. Otherwise, overwrite pWal->hdr
+      ** with *pSnapshot and set *pChanged as appropriate for opening the
+      ** snapshot.  */
+      if( !memcmp(pSnapshot->aSalt, pWal->hdr.aSalt, sizeof(pWal->hdr.aSalt))
+       && pSnapshot->mxFrame>=pInfo->nBackfillAttempted
+      ){
+        assert( pWal->readLock>0 );
+        memcpy(&pWal->hdr, pSnapshot, sizeof(WalIndexHdr));
+        *pChanged = bChanged;
+      }else{
+        rc = SQLITE_ERROR_SNAPSHOT;
       }
 
+      /* A client using a non-current snapshot may not ignore any frames
+      ** from the start of the wal file. This is because, for a system
+      ** where (minFrame < iSnapshot < maxFrame), a checkpointer may
+      ** have omitted to checkpoint a frame earlier than minFrame in
+      ** the file because there exists a frame after iSnapshot that
+      ** is the same database page.  */
+      pWal->minFrame = 1;
 
       if( rc!=SQLITE_OK ){
         sqlite3WalEndReadTransaction(pWal);
       }
     }
   }
+
+  /* Release the shared CKPT lock obtained above. */
+  if( pWal->ckptLock ){
+    assert( pSnapshot );
+    walUnlockShared(pWal, WAL_CKPT_LOCK);
+    pWal->ckptLock = 0;
+  }
 #endif
   return rc;
 }
@@ -66599,14 +67846,15 @@ SQLITE_PRIVATE int sqlite3WalFindFrame(
     int iKey;                     /* Hash slot index */
     int nCollide;                 /* Number of hash collisions remaining */
     int rc;                       /* Error code */
+    u32 iH;
 
     rc = walHashGet(pWal, iHash, &sLoc);
     if( rc!=SQLITE_OK ){
       return rc;
     }
     nCollide = HASHTABLE_NSLOT;
-    for(iKey=walHash(pgno); sLoc.aHash[iKey]; iKey=walNextHash(iKey)){
-      u32 iH = sLoc.aHash[iKey];
+    iKey = walHash(pgno);
+    while( (iH = AtomicLoad(&sLoc.aHash[iKey]))!=0 ){
       u32 iFrame = iH + sLoc.iZero;
       if( iFrame<=iLast && iFrame>=pWal->minFrame && sLoc.aPgno[iH]==pgno ){
         assert( iFrame>iRead || CORRUPT_DB );
@@ -66615,6 +67863,7 @@ SQLITE_PRIVATE int sqlite3WalFindFrame(
       if( (nCollide--)==0 ){
         return SQLITE_CORRUPT_BKPT;
       }
+      iKey = walNextHash(iKey);
     }
     if( iRead ) break;
   }
@@ -66690,6 +67939,16 @@ SQLITE_PRIVATE Pgno sqlite3WalDbsize(Wal *pWal){
 SQLITE_PRIVATE int sqlite3WalBeginWriteTransaction(Wal *pWal){
   int rc;
 
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+  /* If the write-lock is already held, then it was obtained before the
+  ** read-transaction was even opened, making this call a no-op.
+  ** Return early. */
+  if( pWal->writeLock ){
+    assert( !memcmp(&pWal->hdr,(void *)walIndexHdr(pWal),sizeof(WalIndexHdr)) );
+    return SQLITE_OK;
+  }
+#endif
+
   /* Cannot start a write transaction without first holding a read
   ** transaction. */
   assert( pWal->readLock>=0 );
@@ -67274,45 +68533,52 @@ SQLITE_PRIVATE int sqlite3WalCheckpoint(
   if( pWal->readOnly ) return SQLITE_READONLY;
   WALTRACE(("WAL%p: checkpoint begins\n", pWal));
 
+  /* Enable blocking locks, if possible. If blocking locks are successfully
+  ** enabled, set xBusy2=0 so that the busy-handler is never invoked. */
+  sqlite3WalDb(pWal, db);
+  (void)walEnableBlocking(pWal);
+
   /* IMPLEMENTATION-OF: R-62028-47212 All calls obtain an exclusive
-  ** "checkpoint" lock on the database file. */
+  ** "checkpoint" lock on the database file.
+  ** EVIDENCE-OF: R-10421-19736 If any other process is running a
+  ** checkpoint operation at the same time, the lock cannot be obtained and
+  ** SQLITE_BUSY is returned.
+  ** EVIDENCE-OF: R-53820-33897 Even if there is a busy-handler configured,
+  ** it will not be invoked in this case.
+  */
   rc = walLockExclusive(pWal, WAL_CKPT_LOCK, 1);
-  if( rc ){
-    /* EVIDENCE-OF: R-10421-19736 If any other process is running a
-    ** checkpoint operation at the same time, the lock cannot be obtained and
-    ** SQLITE_BUSY is returned.
-    ** EVIDENCE-OF: R-53820-33897 Even if there is a busy-handler configured,
-    ** it will not be invoked in this case.
-    */
-    testcase( rc==SQLITE_BUSY );
-    testcase( xBusy!=0 );
-    return rc;
-  }
-  pWal->ckptLock = 1;
+  testcase( rc==SQLITE_BUSY );
+  testcase( rc!=SQLITE_OK && xBusy2!=0 );
+  if( rc==SQLITE_OK ){
+    pWal->ckptLock = 1;
 
-  /* IMPLEMENTATION-OF: R-59782-36818 The SQLITE_CHECKPOINT_FULL, RESTART and
-  ** TRUNCATE modes also obtain the exclusive "writer" lock on the database
-  ** file.
-  **
-  ** EVIDENCE-OF: R-60642-04082 If the writer lock cannot be obtained
-  ** immediately, and a busy-handler is configured, it is invoked and the
-  ** writer lock retried until either the busy-handler returns 0 or the
-  ** lock is successfully obtained.
-  */
-  if( eMode!=SQLITE_CHECKPOINT_PASSIVE ){
-    rc = walBusyLock(pWal, xBusy, pBusyArg, WAL_WRITE_LOCK, 1);
-    if( rc==SQLITE_OK ){
-      pWal->writeLock = 1;
-    }else if( rc==SQLITE_BUSY ){
-      eMode2 = SQLITE_CHECKPOINT_PASSIVE;
-      xBusy2 = 0;
-      rc = SQLITE_OK;
+    /* IMPLEMENTATION-OF: R-59782-36818 The SQLITE_CHECKPOINT_FULL, RESTART and
+    ** TRUNCATE modes also obtain the exclusive "writer" lock on the database
+    ** file.
+    **
+    ** EVIDENCE-OF: R-60642-04082 If the writer lock cannot be obtained
+    ** immediately, and a busy-handler is configured, it is invoked and the
+    ** writer lock retried until either the busy-handler returns 0 or the
+    ** lock is successfully obtained.
+    */
+    if( eMode!=SQLITE_CHECKPOINT_PASSIVE ){
+      rc = walBusyLock(pWal, xBusy2, pBusyArg, WAL_WRITE_LOCK, 1);
+      if( rc==SQLITE_OK ){
+        pWal->writeLock = 1;
+      }else if( rc==SQLITE_BUSY ){
+        eMode2 = SQLITE_CHECKPOINT_PASSIVE;
+        xBusy2 = 0;
+        rc = SQLITE_OK;
+      }
     }
   }
 
+
   /* Read the wal-index header. */
   if( rc==SQLITE_OK ){
+    walDisableBlocking(pWal);
     rc = walIndexReadHdr(pWal, &isChanged);
+    (void)walEnableBlocking(pWal);
     if( isChanged && pWal->pDbFd->pMethods->iVersion>=3 ){
       sqlite3OsUnfetch(pWal->pDbFd, 0, 0);
     }
@@ -67344,11 +68610,19 @@ SQLITE_PRIVATE int sqlite3WalCheckpoint(
     memset(&pWal->hdr, 0, sizeof(WalIndexHdr));
   }
 
+  walDisableBlocking(pWal);
+  sqlite3WalDb(pWal, 0);
+
   /* Release the locks. */
   sqlite3WalEndWriteTransaction(pWal);
-  walUnlockExclusive(pWal, WAL_CKPT_LOCK, 1);
-  pWal->ckptLock = 0;
+  if( pWal->ckptLock ){
+    walUnlockExclusive(pWal, WAL_CKPT_LOCK, 1);
+    pWal->ckptLock = 0;
+  }
   WALTRACE(("WAL%p: checkpoint %s\n", pWal, rc ? "failed" : "ok"));
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+  if( rc==SQLITE_BUSY_TIMEOUT ) rc = SQLITE_BUSY;
+#endif
   return (rc==SQLITE_OK && eMode!=eMode2 ? SQLITE_BUSY : rc);
 }
 
@@ -67465,7 +68739,10 @@ SQLITE_PRIVATE int sqlite3WalSnapshotGet(Wal *pWal, sqlite3_snapshot **ppSnapsho
 
 /* Try to open on pSnapshot when the next read-transaction starts
 */
-SQLITE_PRIVATE void sqlite3WalSnapshotOpen(Wal *pWal, sqlite3_snapshot *pSnapshot){
+SQLITE_PRIVATE void sqlite3WalSnapshotOpen(
+  Wal *pWal,
+  sqlite3_snapshot *pSnapshot
+){
   pWal->pSnapshot = (WalIndexHdr*)pSnapshot;
 }
 
@@ -67928,7 +69205,7 @@ int sqlite3BtreeTrace=1;  /* True to enable tracing */
 ** but the test harness needs to access it so we make it global for
 ** test builds.
 **
-** Access to this variable is protected by SQLITE_MUTEX_STATIC_MASTER.
+** Access to this variable is protected by SQLITE_MUTEX_STATIC_MAIN.
 */
 #ifdef SQLITE_TEST
 SQLITE_PRIVATE BtShared *SQLITE_WSD sqlite3SharedCacheList = 0;
@@ -68059,16 +69336,18 @@ static int hasSharedCacheTableLock(
   ** table.  */
   if( isIndex ){
     HashElem *p;
+    int bSeen = 0;
     for(p=sqliteHashFirst(&pSchema->idxHash); p; p=sqliteHashNext(p)){
       Index *pIdx = (Index *)sqliteHashData(p);
       if( pIdx->tnum==(int)iRoot ){
-        if( iTab ){
+        if( bSeen ){
           /* Two or more indexes share the same root page.  There must
           ** be imposter tables.  So just return true.  The assert is not
           ** useful in that case. */
           return 1;
         }
         iTab = pIdx->pTable->tnum;
+        bSeen = 1;
       }
     }
   }else{
@@ -68214,7 +69493,7 @@ static int setSharedCacheTableLock(Btree *p, Pgno iTable, u8 eLock){
 
   /* A connection with the read-uncommitted flag set will never try to
   ** obtain a read-lock using this function. The only read-lock obtained
-  ** by a connection in read-uncommitted mode is on the sqlite_master
+  ** by a connection in read-uncommitted mode is on the sqlite_schema
   ** table, and that lock is obtained in BtreeBeginTrans().  */
   assert( 0==(p->db->flags&SQLITE_ReadUncommit) || eLock==WRITE_LOCK );
 
@@ -68470,7 +69749,7 @@ static int btreeSetHasContent(BtShared *pBt, Pgno pgno){
 */
 static int btreeGetHasContent(BtShared *pBt, Pgno pgno){
   Bitvec *p = pBt->pHasContent;
-  return (p && (pgno>sqlite3BitvecSize(p) || sqlite3BitvecTest(p, pgno)));
+  return p && (pgno>sqlite3BitvecSize(p) || sqlite3BitvecTestNotNull(p, pgno));
 }
 
 /*
@@ -68558,6 +69837,9 @@ static int saveCursorPosition(BtCursor *pCur){
   assert( 0==pCur->pKey );
   assert( cursorHoldsMutex(pCur) );
 
+  if( pCur->curFlags & BTCF_Pinned ){
+    return SQLITE_CONSTRAINT_PINNED;
+  }
   if( pCur->eState==CURSOR_SKIPNEXT ){
     pCur->eState = CURSOR_VALID;
   }else{
@@ -68847,7 +70129,7 @@ static void ptrmapPut(BtShared *pBt, Pgno key, u8 eType, Pgno parent, int *pRC){
   if( *pRC ) return;
 
   assert( sqlite3_mutex_held(pBt->mutex) );
-  /* The master-journal page number must never be used as a pointer map page */
+  /* The super-journal page number must never be used as a pointer map page */
   assert( 0==PTRMAP_ISPAGE(pBt, PENDING_BYTE_PAGE(pBt)) );
 
   assert( pBt->autoVacuum );
@@ -69314,7 +70596,7 @@ static int defragmentPage(MemPage *pPage, int nMaxFrag){
           if( iFree2+sz2 > usableSize ) return SQLITE_CORRUPT_PAGE(pPage);
           memmove(&data[iFree+sz+sz2], &data[iFree+sz], iFree2-(iFree+sz));
           sz += sz2;
-        }else if( iFree+sz>usableSize ){
+        }else if( NEVER(iFree+sz>usableSize) ){
           return SQLITE_CORRUPT_PAGE(pPage);
         }
 
@@ -69506,8 +70788,10 @@ static int allocateSpace(MemPage *pPage, int nByte, int *pIdx){
   if( (data[hdr+2] || data[hdr+1]) && gap+2<=top ){
     u8 *pSpace = pageFindSlot(pPage, nByte, &rc);
     if( pSpace ){
+      int g2;
       assert( pSpace+nByte<=data+pPage->pBt->usableSize );
-      if( (*pIdx = (int)(pSpace-data))<=gap ){
+      *pIdx = g2 = (int)(pSpace-data);
+      if( NEVER(g2<=gap) ){
         return SQLITE_CORRUPT_PAGE(pPage);
       }else{
         return SQLITE_OK;
@@ -69585,12 +70869,12 @@ static int freeSpace(MemPage *pPage, u16 iStart, u16 iSize){
   }else{
     while( (iFreeBlk = get2byte(&data[iPtr]))<iStart ){
       if( iFreeBlk<iPtr+4 ){
-        if( iFreeBlk==0 ) break;
+        if( iFreeBlk==0 ) break; /* TH3: corrupt082.100 */
         return SQLITE_CORRUPT_PAGE(pPage);
       }
       iPtr = iFreeBlk;
     }
-    if( iFreeBlk>pPage->pBt->usableSize-4 ){
+    if( iFreeBlk>pPage->pBt->usableSize-4 ){ /* TH3: corrupt081.100 */
       return SQLITE_CORRUPT_PAGE(pPage);
     }
     assert( iFreeBlk>iPtr || iFreeBlk==0 );
@@ -69633,7 +70917,8 @@ static int freeSpace(MemPage *pPage, u16 iStart, u16 iSize){
     /* The new freeblock is at the beginning of the cell content area,
     ** so just extend the cell content area rather than create another
     ** freelist entry */
-    if( iStart<x || iPtr!=hdr+1 ) return SQLITE_CORRUPT_PAGE(pPage);
+    if( iStart<x ) return SQLITE_CORRUPT_PAGE(pPage);
+    if( iPtr!=hdr+1 ) return SQLITE_CORRUPT_PAGE(pPage);
     put2byte(&data[hdr+1], iFreeBlk);
     put2byte(&data[hdr+5], iEnd);
   }else{
@@ -69753,7 +71038,7 @@ static int btreeComputeFreeSpace(MemPage *pPage){
   nFree = data[hdr+7] + top;  /* Init nFree to non-freeblock free space */
   if( pc>0 ){
     u32 next, size;
-    if( pc<iCellFirst ){
+    if( pc<top ){
       /* EVIDENCE-OF: R-55530-52930 In a well-formed b-tree page, there will
       ** always be at least one cell before the first freeblock.
       */
@@ -69992,9 +71277,8 @@ static MemPage *btreePageLookup(BtShared *pBt, Pgno pgno){
 static Pgno btreePagecount(BtShared *pBt){
   return pBt->nPage;
 }
-SQLITE_PRIVATE u32 sqlite3BtreeLastPage(Btree *p){
+SQLITE_PRIVATE Pgno sqlite3BtreeLastPage(Btree *p){
   assert( sqlite3BtreeHoldsMutex(p) );
-  assert( ((p->pBt->nPage)&0x80000000)==0 );
   return btreePagecount(p->pBt);
 }
 
@@ -70157,8 +71441,7 @@ static int btreeInvokeBusyHandler(void *pArg){
   BtShared *pBt = (BtShared*)pArg;
   assert( pBt->db );
   assert( sqlite3_mutex_held(pBt->db->mutex) );
-  return sqlite3InvokeBusyHandler(&pBt->db->busyHandler,
-                                  sqlite3PagerFile(pBt->pPager));
+  return sqlite3InvokeBusyHandler(&pBt->db->busyHandler);
 }
 
 /*
@@ -70262,15 +71545,19 @@ SQLITE_PRIVATE int sqlite3BtreeOpen(
         rc = sqlite3OsFullPathname(pVfs, zFilename,
                                    nFullPathname, zFullPathname);
         if( rc ){
-          sqlite3_free(zFullPathname);
-          sqlite3_free(p);
-          return rc;
+          if( rc==SQLITE_OK_SYMLINK ){
+            rc = SQLITE_OK;
+          }else{
+            sqlite3_free(zFullPathname);
+            sqlite3_free(p);
+            return rc;
+          }
         }
       }
 #if SQLITE_THREADSAFE
       mutexOpen = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_OPEN);
       sqlite3_mutex_enter(mutexOpen);
-      mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+      mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN);
       sqlite3_mutex_enter(mutexShared);
 #endif
       for(pBt=GLOBAL(BtShared*,sqlite3SharedCacheList); pBt; pBt=pBt->pNext){
@@ -70389,7 +71676,7 @@ SQLITE_PRIVATE int sqlite3BtreeOpen(
     pBt->nRef = 1;
     if( p->sharable ){
       MUTEX_LOGIC( sqlite3_mutex *mutexShared; )
-      MUTEX_LOGIC( mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);)
+      MUTEX_LOGIC( mutexShared = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN);)
       if( SQLITE_THREADSAFE && sqlite3GlobalConfig.bCoreMutex ){
         pBt->mutex = sqlite3MutexAlloc(SQLITE_MUTEX_FAST);
         if( pBt->mutex==0 ){
@@ -70478,13 +71765,13 @@ btree_open_out:
 */
 static int removeFromSharingList(BtShared *pBt){
 #ifndef SQLITE_OMIT_SHARED_CACHE
-  MUTEX_LOGIC( sqlite3_mutex *pMaster; )
+  MUTEX_LOGIC( sqlite3_mutex *pMainMtx; )
   BtShared *pList;
   int removed = 0;
 
   assert( sqlite3_mutex_notheld(pBt->mutex) );
-  MUTEX_LOGIC( pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
-  sqlite3_mutex_enter(pMaster);
+  MUTEX_LOGIC( pMainMtx = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); )
+  sqlite3_mutex_enter(pMainMtx);
   pBt->nRef--;
   if( pBt->nRef<=0 ){
     if( GLOBAL(BtShared*,sqlite3SharedCacheList)==pBt ){
@@ -70503,7 +71790,7 @@ static int removeFromSharingList(BtShared *pBt){
     }
     removed = 1;
   }
-  sqlite3_mutex_leave(pMaster);
+  sqlite3_mutex_leave(pMainMtx);
   return removed;
 #else
   return 1;
@@ -70705,19 +71992,17 @@ SQLITE_PRIVATE int sqlite3BtreeSetPagerFlags(
 */
 SQLITE_PRIVATE int sqlite3BtreeSetPageSize(Btree *p, int pageSize, int nReserve, int iFix){
   int rc = SQLITE_OK;
+  int x;
   BtShared *pBt = p->pBt;
-  assert( nReserve>=-1 && nReserve<=255 );
+  assert( nReserve>=0 && nReserve<=255 );
   sqlite3BtreeEnter(p);
-#if SQLITE_HAS_CODEC
-  if( nReserve>pBt->optimalReserve ) pBt->optimalReserve = (u8)nReserve;
-#endif
+  pBt->nReserveWanted = nReserve;
+  x = pBt->pageSize - pBt->usableSize;
+  if( nReserve<x ) nReserve = x;
   if( pBt->btsFlags & BTS_PAGESIZE_FIXED ){
     sqlite3BtreeLeave(p);
     return SQLITE_READONLY;
   }
-  if( nReserve<0 ){
-    nReserve = pBt->pageSize - pBt->usableSize;
-  }
   assert( nReserve>=0 && nReserve<=255 );
   if( pageSize>=512 && pageSize<=SQLITE_MAX_PAGE_SIZE &&
         ((pageSize-1)&pageSize)==0 ){
@@ -70763,19 +72048,17 @@ SQLITE_PRIVATE int sqlite3BtreeGetReserveNoMutex(Btree *p){
 ** are intentually left unused.  This is the "reserved" space that is
 ** sometimes used by extensions.
 **
-** If SQLITE_HAS_MUTEX is defined then the number returned is the
-** greater of the current reserved space and the maximum requested
-** reserve space.
+** The value returned is the larger of the current reserve size and
+** the latest reserve size requested by SQLITE_FILECTRL_RESERVE_BYTES.
+** The amount of reserve can only grow - never shrink.
 */
-SQLITE_PRIVATE int sqlite3BtreeGetOptimalReserve(Btree *p){
-  int n;
+SQLITE_PRIVATE int sqlite3BtreeGetRequestedReserve(Btree *p){
+  int n1, n2;
   sqlite3BtreeEnter(p);
-  n = sqlite3BtreeGetReserveNoMutex(p);
-#ifdef SQLITE_HAS_CODEC
-  if( n<p->pBt->optimalReserve ) n = p->pBt->optimalReserve;
-#endif
+  n1 = (int)p->pBt->nReserveWanted;
+  n2 = sqlite3BtreeGetReserveNoMutex(p);
   sqlite3BtreeLeave(p);
-  return n;
+  return n1>n2 ? n1 : n2;
 }
 
 
@@ -70784,8 +72067,8 @@ SQLITE_PRIVATE int sqlite3BtreeGetOptimalReserve(Btree *p){
 ** No changes are made if mxPage is 0 or negative.
 ** Regardless of the value of mxPage, return the maximum page count.
 */
-SQLITE_PRIVATE int sqlite3BtreeMaxPageCount(Btree *p, int mxPage){
-  int n;
+SQLITE_PRIVATE Pgno sqlite3BtreeMaxPageCount(Btree *p, Pgno mxPage){
+  Pgno n;
   sqlite3BtreeEnter(p);
   n = sqlite3PagerMaxPageCount(p->pBt->pPager, mxPage);
   sqlite3BtreeLeave(p);
@@ -71225,6 +72508,7 @@ SQLITE_PRIVATE int sqlite3BtreeNewDb(Btree *p){
 */
 SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag, int *pSchemaVersion){
   BtShared *pBt = p->pBt;
+  Pager *pPager = pBt->pPager;
   int rc = SQLITE_OK;
 
   sqlite3BtreeEnter(p);
@@ -71240,7 +72524,7 @@ SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag, int *pSchemaVers
   assert( pBt->inTransaction==TRANS_WRITE || IfNotOmitAV(pBt->bDoTruncate)==0 );
 
   if( (p->db->flags & SQLITE_ResetDatabase)
-   && sqlite3PagerIsreadonly(pBt->pPager)==0
+   && sqlite3PagerIsreadonly(pPager)==0
   ){
     pBt->btsFlags &= ~BTS_READ_ONLY;
   }
@@ -71282,12 +72566,24 @@ SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag, int *pSchemaVers
   /* Any read-only or read-write transaction implies a read-lock on
   ** page 1. So if some other shared-cache client already has a write-lock
   ** on page 1, the transaction cannot be opened. */
-  rc = querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK);
+  rc = querySharedCacheTableLock(p, SCHEMA_ROOT, READ_LOCK);
   if( SQLITE_OK!=rc ) goto trans_begun;
 
   pBt->btsFlags &= ~BTS_INITIALLY_EMPTY;
   if( pBt->nPage==0 ) pBt->btsFlags |= BTS_INITIALLY_EMPTY;
   do {
+    sqlite3PagerWalDb(pPager, p->db);
+
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+    /* If transitioning from no transaction directly to a write transaction,
+    ** block for the WRITER lock first if possible. */
+    if( pBt->pPage1==0 && wrflag ){
+      assert( pBt->inTransaction==TRANS_NONE );
+      rc = sqlite3PagerWalWriteLock(pPager, 1);
+      if( rc!=SQLITE_BUSY && rc!=SQLITE_OK ) break;
+    }
+#endif
+
     /* Call lockBtree() until either pBt->pPage1 is populated or
     ** lockBtree() returns something other than SQLITE_OK. lockBtree()
     ** may return SQLITE_OK but leave pBt->pPage1 set to 0 if after
@@ -71301,7 +72597,7 @@ SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag, int *pSchemaVers
       if( (pBt->btsFlags & BTS_READ_ONLY)!=0 ){
         rc = SQLITE_READONLY;
       }else{
-        rc = sqlite3PagerBegin(pBt->pPager,wrflag>1,sqlite3TempInMemory(p->db));
+        rc = sqlite3PagerBegin(pPager, wrflag>1, sqlite3TempInMemory(p->db));
         if( rc==SQLITE_OK ){
           rc = newDatabase(pBt);
         }else if( rc==SQLITE_BUSY_SNAPSHOT && pBt->inTransaction==TRANS_NONE ){
@@ -71314,11 +72610,15 @@ SQLITE_PRIVATE int sqlite3BtreeBeginTrans(Btree *p, int wrflag, int *pSchemaVers
     }
 
     if( rc!=SQLITE_OK ){
+      (void)sqlite3PagerWalWriteLock(pPager, 0);
       unlockBtreeIfUnused(pBt);
     }
   }while( (rc&0xFF)==SQLITE_BUSY && pBt->inTransaction==TRANS_NONE &&
           btreeInvokeBusyHandler(pBt) );
-  sqlite3PagerResetLockTimeout(pBt->pPager);
+  sqlite3PagerWalDb(pPager, 0);
+#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
+  if( rc==SQLITE_BUSY_TIMEOUT ) rc = SQLITE_BUSY;
+#endif
 
   if( rc==SQLITE_OK ){
     if( p->inTrans==TRANS_NONE ){
@@ -71370,7 +72670,7 @@ trans_begun:
       ** open savepoints. If the second parameter is greater than 0 and
       ** the sub-journal is not already open, then it will be opened here.
       */
-      rc = sqlite3PagerOpenSavepoint(pBt->pPager, p->db->nSavepoint);
+      rc = sqlite3PagerOpenSavepoint(pPager, p->db->nSavepoint);
     }
   }
 
@@ -71721,7 +73021,7 @@ SQLITE_PRIVATE int sqlite3BtreeIncrVacuum(Btree *p){
     Pgno nFree = get4byte(&pBt->pPage1->aData[36]);
     Pgno nFin = finalDbSize(pBt, nOrig, nFree);
 
-    if( nOrig<nFin ){
+    if( nOrig<nFin || nFree>=nOrig ){
       rc = SQLITE_CORRUPT_BKPT;
     }else if( nFree>0 ){
       rc = saveAllCursors(pBt, 0, 0);
@@ -71818,18 +73118,18 @@ static int autoVacuumCommit(BtShared *pBt){
 **
 ** This call is a no-op if no write-transaction is currently active on pBt.
 **
-** Otherwise, sync the database file for the btree pBt. zMaster points to
-** the name of a master journal file that should be written into the
-** individual journal file, or is NULL, indicating no master journal file
+** Otherwise, sync the database file for the btree pBt. zSuperJrnl points to
+** the name of a super-journal file that should be written into the
+** individual journal file, or is NULL, indicating no super-journal file
 ** (single database transaction).
 **
-** When this is called, the master journal should already have been
+** When this is called, the super-journal should already have been
 ** created, populated with this journal pointer and synced to disk.
 **
 ** Once this is routine has returned, the only thing required to commit
 ** the write-transaction for this database file is to delete the journal.
 */
-SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree *p, const char *zMaster){
+SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree *p, const char *zSuperJrnl){
   int rc = SQLITE_OK;
   if( p->inTrans==TRANS_WRITE ){
     BtShared *pBt = p->pBt;
@@ -71846,7 +73146,7 @@ SQLITE_PRIVATE int sqlite3BtreeCommitPhaseOne(Btree *p, const char *zMaster){
       sqlite3PagerTruncateImage(pBt->pPager, pBt->nPage);
     }
 #endif
-    rc = sqlite3PagerCommitPhaseOne(pBt->pPager, zMaster, 0);
+    rc = sqlite3PagerCommitPhaseOne(pBt->pPager, zSuperJrnl, 0);
     sqlite3BtreeLeave(p);
   }
   return rc;
@@ -71909,7 +73209,7 @@ static void btreeEndTransaction(Btree *p){
 ** the upper layer will attempt a rollback. However, if the second argument
 ** is non-zero then this b-tree transaction is part of a multi-file
 ** transaction. In this case, the transaction has already been committed
-** (by deleting a master journal file) and the caller will ignore this
+** (by deleting a super-journal file) and the caller will ignore this
 ** functions return code. So, even if an error occurs in the pager layer,
 ** reset the b-tree objects internal state to indicate that the write
 ** transaction has been closed. This is quite safe, as the pager will have
@@ -72207,7 +73507,7 @@ SQLITE_PRIVATE int sqlite3BtreeSavepoint(Btree *p, int op, int iSavepoint){
 */
 static int btreeCursor(
   Btree *p,                              /* The btree */
-  int iTable,                            /* Root page of table to open */
+  Pgno iTable,                           /* Root page of table to open */
   int wrFlag,                            /* 1 to write. 0 read-only */
   struct KeyInfo *pKeyInfo,              /* First arg to comparison function */
   BtCursor *pCur                         /* Space for new cursor */
@@ -72224,8 +73524,9 @@ static int btreeCursor(
   /* The following assert statements verify that if this is a sharable
   ** b-tree database, the connection is holding the required table locks,
   ** and that no other connection has any open cursor that conflicts with
-  ** this lock.  */
-  assert( hasSharedCacheTableLock(p, iTable, pKeyInfo!=0, (wrFlag?2:1)) );
+  ** this lock.  The iTable<1 term disables the check for corrupt schemas. */
+  assert( hasSharedCacheTableLock(p, iTable, pKeyInfo!=0, (wrFlag?2:1))
+          || iTable<1 );
   assert( wrFlag==0 || !hasReadConflicts(p, iTable) );
 
   /* Assert that the caller has opened the required transaction. */
@@ -72238,14 +73539,18 @@ static int btreeCursor(
     allocateTempSpace(pBt);
     if( pBt->pTmpSpace==0 ) return SQLITE_NOMEM_BKPT;
   }
-  if( iTable==1 && btreePagecount(pBt)==0 ){
-    assert( wrFlag==0 );
-    iTable = 0;
+  if( iTable<=1 ){
+    if( iTable<1 ){
+      return SQLITE_CORRUPT_BKPT;
+    }else if( btreePagecount(pBt)==0 ){
+      assert( wrFlag==0 );
+      iTable = 0;
+    }
   }
 
   /* Now that no other errors can occur, finish filling in the BtCursor
   ** variables and link the cursor into the BtShared list.  */
-  pCur->pgnoRoot = (Pgno)iTable;
+  pCur->pgnoRoot = iTable;
   pCur->iPage = -1;
   pCur->pKeyInfo = pKeyInfo;
   pCur->pBtree = p;
@@ -72255,7 +73560,7 @@ static int btreeCursor(
   /* If there are two or more cursors on the same btree, then all such
   ** cursors *must* have the BTCF_Multiple flag set. */
   for(pX=pBt->pCursor; pX; pX=pX->pNext){
-    if( pX->pgnoRoot==(Pgno)iTable ){
+    if( pX->pgnoRoot==iTable ){
       pX->curFlags |= BTCF_Multiple;
       pCur->curFlags |= BTCF_Multiple;
     }
@@ -72265,22 +73570,31 @@ static int btreeCursor(
   pCur->eState = CURSOR_INVALID;
   return SQLITE_OK;
 }
+static int btreeCursorWithLock(
+  Btree *p,                              /* The btree */
+  Pgno iTable,                           /* Root page of table to open */
+  int wrFlag,                            /* 1 to write. 0 read-only */
+  struct KeyInfo *pKeyInfo,              /* First arg to comparison function */
+  BtCursor *pCur                         /* Space for new cursor */
+){
+  int rc;
+  sqlite3BtreeEnter(p);
+  rc = btreeCursor(p, iTable, wrFlag, pKeyInfo, pCur);
+  sqlite3BtreeLeave(p);
+  return rc;
+}
 SQLITE_PRIVATE int sqlite3BtreeCursor(
   Btree *p,                                   /* The btree */
-  int iTable,                                 /* Root page of table to open */
+  Pgno iTable,                                /* Root page of table to open */
   int wrFlag,                                 /* 1 to write. 0 read-only */
   struct KeyInfo *pKeyInfo,                   /* First arg to xCompare() */
   BtCursor *pCur                              /* Write new cursor here */
 ){
-  int rc;
-  if( iTable<1 ){
-    rc = SQLITE_CORRUPT_BKPT;
+  if( p->sharable ){
+    return btreeCursorWithLock(p, iTable, wrFlag, pKeyInfo, pCur);
   }else{
-    sqlite3BtreeEnter(p);
-    rc = btreeCursor(p, iTable, wrFlag, pKeyInfo, pCur);
-    sqlite3BtreeLeave(p);
+    return btreeCursor(p, iTable, wrFlag, pKeyInfo, pCur);
   }
-  return rc;
 }
 
 /*
@@ -72403,6 +73717,18 @@ SQLITE_PRIVATE i64 sqlite3BtreeIntegerKey(BtCursor *pCur){
   return pCur->info.nKey;
 }
 
+/*
+** Pin or unpin a cursor.
+*/
+SQLITE_PRIVATE void sqlite3BtreeCursorPin(BtCursor *pCur){
+  assert( (pCur->curFlags & BTCF_Pinned)==0 );
+  pCur->curFlags |= BTCF_Pinned;
+}
+SQLITE_PRIVATE void sqlite3BtreeCursorUnpin(BtCursor *pCur){
+  assert( (pCur->curFlags & BTCF_Pinned)!=0 );
+  pCur->curFlags &= ~BTCF_Pinned;
+}
+
 #ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC
 /*
 ** Return the offset into the database file for the start of the
@@ -72684,6 +74010,7 @@ static int accessPayload(
     assert( rc==SQLITE_OK && amt>0 );
     while( nextPage ){
       /* If required, populate the overflow page-list cache. */
+      if( nextPage > pBt->nPage ) return SQLITE_CORRUPT_BKPT;
       assert( pCur->aOverflow[iIdx]==0
               || pCur->aOverflow[iIdx]==nextPage
               || CORRUPT_DB );
@@ -73559,8 +74886,11 @@ static SQLITE_NOINLINE int btreeNext(BtCursor *pCur){
   ** to be invalid here. This can only occur if a second cursor modifies
   ** the page while cursor pCur is holding a reference to it. Which can
   ** only happen if the database is corrupt in such a way as to link the
-  ** page into more than one b-tree structure. */
-  testcase( idx>pPage->nCell );
+  ** page into more than one b-tree structure.
+  **
+  ** Update 2019-12-23: appears to long longer be possible after the
+  ** addition of anotherValidCursor() condition on balance_deeper().  */
+  harmless( idx>pPage->nCell );
 
   if( idx>=pPage->nCell ){
     if( !pPage->leaf ){
@@ -74096,6 +75426,10 @@ static int freePage2(BtShared *pBt, MemPage *pMemPage, Pgno iPage){
     u32 nLeaf;                /* Initial number of leaf cells on trunk page */
 
     iTrunk = get4byte(&pPage1->aData[32]);
+    if( iTrunk>btreePagecount(pBt) ){
+      rc = SQLITE_CORRUPT_BKPT;
+      goto freepage_out;
+    }
     rc = btreeGetPage(pBt, iTrunk, &pTrunk, 0);
     if( rc!=SQLITE_OK ){
       goto freepage_out;
@@ -74759,7 +76093,7 @@ static int rebuildPage(
 
   assert( i<iEnd );
   j = get2byte(&aData[hdr+5]);
-  if( j>(u32)usableSize ){ j = 0; }
+  if( NEVER(j>(u32)usableSize) ){ j = 0; }
   memcpy(&pTmp[j], &aData[j], usableSize - j);
 
   for(k=0; pCArray->ixNx[k]<=i && ALWAYS(k<NB*2); k++){}
@@ -74785,7 +76119,7 @@ static int rebuildPage(
     if( pData < pCellptr ) return SQLITE_CORRUPT_BKPT;
     memcpy(pData, pCell, sz);
     assert( sz==pPg->xCellSize(pPg, pCell) || CORRUPT_DB );
-    testcase( sz!=pPg->xCellSize(pPg,pCell) );
+    testcase( sz!=pPg->xCellSize(pPg,pCell) )
     i++;
     if( i>=iEnd ) break;
     if( pCArray->ixNx[k]<=i ){
@@ -74977,7 +76311,7 @@ static int editPage(
   assert( nCell>=0 );
   if( iOld<iNew ){
     int nShift = pageFreeArray(pPg, iOld, iNew-iOld, pCArray);
-    if( nShift>nCell ) return SQLITE_CORRUPT_BKPT;
+    if( NEVER(nShift>nCell) ) return SQLITE_CORRUPT_BKPT;
     memmove(pPg->aCellIdx, &pPg->aCellIdx[nShift*2], nCell*2);
     nCell -= nShift;
   }
@@ -76150,6 +77484,30 @@ static int balance_deeper(MemPage *pRoot, MemPage **ppChild){
 }
 
 /*
+** Return SQLITE_CORRUPT if any cursor other than pCur is currently valid
+** on the same B-tree as pCur.
+**
+** This can if a database is corrupt with two or more SQL tables
+** pointing to the same b-tree.  If an insert occurs on one SQL table
+** and causes a BEFORE TRIGGER to do a secondary insert on the other SQL
+** table linked to the same b-tree.  If the secondary insert causes a
+** rebalance, that can change content out from under the cursor on the
+** first SQL table, violating invariants on the first insert.
+*/
+static int anotherValidCursor(BtCursor *pCur){
+  BtCursor *pOther;
+  for(pOther=pCur->pBt->pCursor; pOther; pOther=pOther->pNext){
+    if( pOther!=pCur
+     && pOther->eState==CURSOR_VALID
+     && pOther->pPage==pCur->pPage
+    ){
+      return SQLITE_CORRUPT_BKPT;
+    }
+  }
+  return SQLITE_OK;
+}
+
+/*
 ** The page that pCur currently points to has just been modified in
 ** some way. This function figures out if this modification means the
 ** tree needs to be balanced, and if so calls the appropriate balancing
@@ -76176,7 +77534,7 @@ static int balance(BtCursor *pCur){
     if( pPage->nOverflow==0 && pPage->nFree<=nMin ){
       break;
     }else if( (iPage = pCur->iPage)==0 ){
-      if( pPage->nOverflow ){
+      if( pPage->nOverflow && (rc = anotherValidCursor(pCur))==SQLITE_OK ){
         /* The root page of the b-tree is overfull. In this case call the
         ** balance_deeper() function to create a new child for the root-page
         ** and copy the current contents of the root-page to it. The
@@ -76472,7 +77830,6 @@ SQLITE_PRIVATE int sqlite3BtreeInsert(
     if( flags & BTREE_SAVEPOSITION ){
       assert( pCur->curFlags & BTCF_ValidNKey );
       assert( pX->nKey==pCur->info.nKey );
-      assert( pCur->info.nSize!=0 );
       assert( loc==0 );
     }
 #endif
@@ -76547,13 +77904,19 @@ SQLITE_PRIVATE int sqlite3BtreeInsert(
     }
 
   }
-  assert( pCur->eState==CURSOR_VALID || (pCur->eState==CURSOR_INVALID && loc) );
+  assert( pCur->eState==CURSOR_VALID
+       || (pCur->eState==CURSOR_INVALID && loc)
+       || CORRUPT_DB );
 
   pPage = pCur->pPage;
   assert( pPage->intKey || pX->nKey>=0 );
   assert( pPage->leaf || !pPage->intKey );
   if( pPage->nFree<0 ){
-    rc = btreeComputeFreeSpace(pPage);
+    if( pCur->eState>CURSOR_INVALID ){
+      rc = SQLITE_CORRUPT_BKPT;
+    }else{
+      rc = btreeComputeFreeSpace(pPage);
+    }
     if( rc ) return rc;
   }
 
@@ -76871,7 +78234,7 @@ SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur, u8 flags){
 **     BTREE_INTKEY|BTREE_LEAFDATA     Used for SQL tables with rowid keys
 **     BTREE_ZERODATA                  Used for SQL indices
 */
-static int btreeCreateTable(Btree *p, int *piTable, int createTabFlags){
+static int btreeCreateTable(Btree *p, Pgno *piTable, int createTabFlags){
   BtShared *pBt = p->pBt;
   MemPage *pRoot;
   Pgno pgnoRoot;
@@ -76904,6 +78267,9 @@ static int btreeCreateTable(Btree *p, int *piTable, int createTabFlags){
     ** created so far, so the new root-page is (meta[3]+1).
     */
     sqlite3BtreeGetMeta(p, BTREE_LARGEST_ROOT_PAGE, &pgnoRoot);
+    if( pgnoRoot>btreePagecount(pBt) ){
+      return SQLITE_CORRUPT_BKPT;
+    }
     pgnoRoot++;
 
     /* The new root-page may not be allocated on a pointer-map page, or the
@@ -76913,8 +78279,7 @@ static int btreeCreateTable(Btree *p, int *piTable, int createTabFlags){
         pgnoRoot==PENDING_BYTE_PAGE(pBt) ){
       pgnoRoot++;
     }
-    assert( pgnoRoot>=3 || CORRUPT_DB );
-    testcase( pgnoRoot<3 );
+    assert( pgnoRoot>=3 );
 
     /* Allocate a page. The page that currently resides at pgnoRoot will
     ** be moved to the allocated page (unless the allocated page happens
@@ -77011,10 +78376,10 @@ static int btreeCreateTable(Btree *p, int *piTable, int createTabFlags){
   zeroPage(pRoot, ptfFlags);
   sqlite3PagerUnref(pRoot->pDbPage);
   assert( (pBt->openFlags & BTREE_SINGLE)==0 || pgnoRoot==2 );
-  *piTable = (int)pgnoRoot;
+  *piTable = pgnoRoot;
   return SQLITE_OK;
 }
-SQLITE_PRIVATE int sqlite3BtreeCreateTable(Btree *p, int *piTable, int flags){
+SQLITE_PRIVATE int sqlite3BtreeCreateTable(Btree *p, Pgno *piTable, int flags){
   int rc;
   sqlite3BtreeEnter(p);
   rc = btreeCreateTable(p, piTable, flags);
@@ -77260,7 +78625,7 @@ SQLITE_PRIVATE void sqlite3BtreeGetMeta(Btree *p, int idx, u32 *pMeta){
 
   sqlite3BtreeEnter(p);
   assert( p->inTrans>TRANS_NONE );
-  assert( SQLITE_OK==querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK) );
+  assert( SQLITE_OK==querySharedCacheTableLock(p, SCHEMA_ROOT, READ_LOCK) );
   assert( pBt->pPage1 );
   assert( idx>=0 && idx<=15 );
 
@@ -77309,7 +78674,6 @@ SQLITE_PRIVATE int sqlite3BtreeUpdateMeta(Btree *p, int idx, u32 iMeta){
   return rc;
 }
 
-#ifndef SQLITE_OMIT_BTREECOUNT
 /*
 ** The first argument, pCur, is a cursor opened on some b-tree. Count the
 ** number of entries in the b-tree and write the result to *pnEntry.
@@ -77318,7 +78682,7 @@ SQLITE_PRIVATE int sqlite3BtreeUpdateMeta(Btree *p, int idx, u32 iMeta){
 ** Otherwise, if an error is encountered (i.e. an IO error or database
 ** corruption) an SQLite error code is returned.
 */
-SQLITE_PRIVATE int sqlite3BtreeCount(BtCursor *pCur, i64 *pnEntry){
+SQLITE_PRIVATE int sqlite3BtreeCount(sqlite3 *db, BtCursor *pCur, i64 *pnEntry){
   i64 nEntry = 0;                      /* Value to return in *pnEntry */
   int rc;                              /* Return code */
 
@@ -77331,7 +78695,7 @@ SQLITE_PRIVATE int sqlite3BtreeCount(BtCursor *pCur, i64 *pnEntry){
   /* Unless an error occurs, the following loop runs one iteration for each
   ** page in the B-Tree structure (not including overflow pages).
   */
-  while( rc==SQLITE_OK ){
+  while( rc==SQLITE_OK && !AtomicLoad(&db->u1.isInterrupted) ){
     int iIdx;                          /* Index of child node in parent */
     MemPage *pPage;                    /* Current page of the b-tree */
 
@@ -77382,7 +78746,6 @@ SQLITE_PRIVATE int sqlite3BtreeCount(BtCursor *pCur, i64 *pnEntry){
   /* An error has occurred. Return an error code. */
   return rc;
 }
-#endif
 
 /*
 ** Return the pager associated with a BTree.  This routine is used for
@@ -77415,7 +78778,7 @@ static void checkAppendMsg(
   sqlite3_str_vappendf(&pCheck->errMsg, zFormat, ap);
   va_end(ap);
   if( pCheck->errMsg.accError==SQLITE_NOMEM ){
-    pCheck->mallocFailed = 1;
+    pCheck->bOomFault = 1;
   }
 }
 #endif /* SQLITE_OMIT_INTEGRITY_CHECK */
@@ -77457,6 +78820,7 @@ static int checkRef(IntegrityCk *pCheck, Pgno iPage){
     checkAppendMsg(pCheck, "2nd reference to page %d", iPage);
     return 1;
   }
+  if( AtomicLoad(&pCheck->db->u1.isInterrupted) ) return 1;
   setPageReferenced(pCheck, iPage);
   return 0;
 }
@@ -77479,7 +78843,7 @@ static void checkPtrmap(
 
   rc = ptrmapGet(pCheck->pBt, iChild, &ePtrmapType, &iPtrmapParent);
   if( rc!=SQLITE_OK ){
-    if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ) pCheck->mallocFailed = 1;
+    if( rc==SQLITE_NOMEM || rc==SQLITE_IOERR_NOMEM ) pCheck->bOomFault = 1;
     checkAppendMsg(pCheck, "Failed to read ptrmap key=%d", iChild);
     return;
   }
@@ -77499,7 +78863,7 @@ static void checkPtrmap(
 static void checkList(
   IntegrityCk *pCheck,  /* Integrity checking context */
   int isFreeList,       /* True for a freelist.  False for overflow page list */
-  int iPage,            /* Page number for first page in the list */
+  Pgno iPage,           /* Page number for first page in the list */
   u32 N                 /* Expected number of pages in the list */
 ){
   int i;
@@ -77631,7 +78995,7 @@ static int btreeHeapPull(u32 *aHeap, u32 *pOut){
 */
 static int checkTreePage(
   IntegrityCk *pCheck,  /* Context for the sanity check */
-  int iPage,            /* Page number of the page to check */
+  Pgno iPage,           /* Page number of the page to check */
   i64 *piMinKey,        /* Write minimum integer primary key here */
   i64 maxKey            /* Error if integer primary key greater than this */
 ){
@@ -77667,9 +79031,9 @@ static int checkTreePage(
   usableSize = pBt->usableSize;
   if( iPage==0 ) return 0;
   if( checkRef(pCheck, iPage) ) return 0;
-  pCheck->zPfx = "Page %d: ";
+  pCheck->zPfx = "Page %u: ";
   pCheck->v1 = iPage;
-  if( (rc = btreeGetPage(pBt, (Pgno)iPage, &pPage, 0))!=0 ){
+  if( (rc = btreeGetPage(pBt, iPage, &pPage, 0))!=0 ){
     checkAppendMsg(pCheck,
        "unable to get the page. error code=%d", rc);
     goto end_of_check;
@@ -77694,7 +79058,7 @@ static int checkTreePage(
   hdr = pPage->hdrOffset;
 
   /* Set up for cell analysis */
-  pCheck->zPfx = "On tree page %d cell %d: ";
+  pCheck->zPfx = "On tree page %u cell %d: ";
   contentOffset = get2byteNotZero(&data[hdr+5]);
   assert( contentOffset<=usableSize );  /* Enforced by btreeInitPage() */
 
@@ -77714,7 +79078,7 @@ static int checkTreePage(
     pgno = get4byte(&data[hdr+8]);
 #ifndef SQLITE_OMIT_AUTOVACUUM
     if( pBt->autoVacuum ){
-      pCheck->zPfx = "On page %d at right child: ";
+      pCheck->zPfx = "On page %u at right child: ";
       checkPtrmap(pCheck, pgno, PTRMAP_BTREE, iPage);
     }
 #endif
@@ -77855,7 +79219,7 @@ static int checkTreePage(
     while( btreeHeapPull(heap,&x) ){
       if( (prev&0xffff)>=(x>>16) ){
         checkAppendMsg(pCheck,
-          "Multiple uses for byte %u of page %d", x>>16, iPage);
+          "Multiple uses for byte %u of page %u", x>>16, iPage);
         break;
       }else{
         nFrag += (x>>16) - (prev&0xffff) - 1;
@@ -77870,7 +79234,7 @@ static int checkTreePage(
     */
     if( heap[0]==0 && nFrag!=data[hdr+7] ){
       checkAppendMsg(pCheck,
-          "Fragmentation of %d bytes reported as %d on page %d",
+          "Fragmentation of %d bytes reported as %d on page %u",
           nFrag, data[hdr+7], iPage);
     }
   }
@@ -77898,10 +79262,20 @@ end_of_check:
 ** allocation errors,  an error message held in memory obtained from
 ** malloc is returned if *pnErr is non-zero.  If *pnErr==0 then NULL is
 ** returned.  If a memory allocation error occurs, NULL is returned.
+**
+** If the first entry in aRoot[] is 0, that indicates that the list of
+** root pages is incomplete.  This is a "partial integrity-check".  This
+** happens when performing an integrity check on a single table.  The
+** zero is skipped, of course.  But in addition, the freelist checks
+** and the checks to make sure every page is referenced are also skipped,
+** since obviously it is not possible to know which pages are covered by
+** the unverified btrees.  Except, if aRoot[1] is 1, then the freelist
+** checks are still performed.
 */
 SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(
+  sqlite3 *db,  /* Database connection that is running the check */
   Btree *p,     /* The btree to be checked */
-  int *aRoot,   /* An array of root pages numbers for individual trees */
+  Pgno *aRoot,  /* An array of root pages numbers for individual trees */
   int nRoot,    /* Number of entries in aRoot[] */
   int mxErr,    /* Stop reporting errors after this many */
   int *pnErr    /* Write number of errors seen to this variable */
@@ -77911,18 +79285,29 @@ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(
   BtShared *pBt = p->pBt;
   u64 savedDbFlags = pBt->db->flags;
   char zErr[100];
+  int bPartial = 0;            /* True if not checking all btrees */
+  int bCkFreelist = 1;         /* True to scan the freelist */
   VVA_ONLY( int nRef );
+  assert( nRoot>0 );
+
+  /* aRoot[0]==0 means this is a partial check */
+  if( aRoot[0]==0 ){
+    assert( nRoot>1 );
+    bPartial = 1;
+    if( aRoot[1]!=1 ) bCkFreelist = 0;
+  }
 
   sqlite3BtreeEnter(p);
   assert( p->inTrans>TRANS_NONE && pBt->inTransaction>TRANS_NONE );
   VVA_ONLY( nRef = sqlite3PagerRefcount(pBt->pPager) );
   assert( nRef>=0 );
+  sCheck.db = db;
   sCheck.pBt = pBt;
   sCheck.pPager = pBt->pPager;
   sCheck.nPage = btreePagecount(sCheck.pBt);
   sCheck.mxErr = mxErr;
   sCheck.nErr = 0;
-  sCheck.mallocFailed = 0;
+  sCheck.bOomFault = 0;
   sCheck.zPfx = 0;
   sCheck.v1 = 0;
   sCheck.v2 = 0;
@@ -77936,12 +79321,12 @@ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(
 
   sCheck.aPgRef = sqlite3MallocZero((sCheck.nPage / 8)+ 1);
   if( !sCheck.aPgRef ){
-    sCheck.mallocFailed = 1;
+    sCheck.bOomFault = 1;
     goto integrity_ck_cleanup;
   }
   sCheck.heap = (u32*)sqlite3PageMalloc( pBt->pageSize );
   if( sCheck.heap==0 ){
-    sCheck.mallocFailed = 1;
+    sCheck.bOomFault = 1;
     goto integrity_ck_cleanup;
   }
 
@@ -77950,29 +79335,33 @@ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(
 
   /* Check the integrity of the freelist
   */
-  sCheck.zPfx = "Main freelist: ";
-  checkList(&sCheck, 1, get4byte(&pBt->pPage1->aData[32]),
-            get4byte(&pBt->pPage1->aData[36]));
-  sCheck.zPfx = 0;
+  if( bCkFreelist ){
+    sCheck.zPfx = "Main freelist: ";
+    checkList(&sCheck, 1, get4byte(&pBt->pPage1->aData[32]),
+              get4byte(&pBt->pPage1->aData[36]));
+    sCheck.zPfx = 0;
+  }
 
   /* Check all the tables.
   */
 #ifndef SQLITE_OMIT_AUTOVACUUM
-  if( pBt->autoVacuum ){
-    int mx = 0;
-    int mxInHdr;
-    for(i=0; (int)i<nRoot; i++) if( mx<aRoot[i] ) mx = aRoot[i];
-    mxInHdr = get4byte(&pBt->pPage1->aData[52]);
-    if( mx!=mxInHdr ){
+  if( !bPartial ){
+    if( pBt->autoVacuum ){
+      Pgno mx = 0;
+      Pgno mxInHdr;
+      for(i=0; (int)i<nRoot; i++) if( mx<aRoot[i] ) mx = aRoot[i];
+      mxInHdr = get4byte(&pBt->pPage1->aData[52]);
+      if( mx!=mxInHdr ){
+        checkAppendMsg(&sCheck,
+          "max rootpage (%d) disagrees with header (%d)",
+          mx, mxInHdr
+        );
+      }
+    }else if( get4byte(&pBt->pPage1->aData[64])!=0 ){
       checkAppendMsg(&sCheck,
-        "max rootpage (%d) disagrees with header (%d)",
-        mx, mxInHdr
+        "incremental_vacuum enabled with a max rootpage of zero"
       );
     }
-  }else if( get4byte(&pBt->pPage1->aData[64])!=0 ){
-    checkAppendMsg(&sCheck,
-      "incremental_vacuum enabled with a max rootpage of zero"
-    );
   }
 #endif
   testcase( pBt->db->flags & SQLITE_CellSizeCk );
@@ -77981,7 +79370,7 @@ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(
     i64 notUsed;
     if( aRoot[i]==0 ) continue;
 #ifndef SQLITE_OMIT_AUTOVACUUM
-    if( pBt->autoVacuum && aRoot[i]>1 ){
+    if( pBt->autoVacuum && aRoot[i]>1 && !bPartial ){
       checkPtrmap(&sCheck, aRoot[i], PTRMAP_ROOTPAGE, 0);
     }
 #endif
@@ -77991,24 +79380,26 @@ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(
 
   /* Make sure every page in the file is referenced
   */
-  for(i=1; i<=sCheck.nPage && sCheck.mxErr; i++){
+  if( !bPartial ){
+    for(i=1; i<=sCheck.nPage && sCheck.mxErr; i++){
 #ifdef SQLITE_OMIT_AUTOVACUUM
-    if( getPageReferenced(&sCheck, i)==0 ){
-      checkAppendMsg(&sCheck, "Page %d is never used", i);
-    }
+      if( getPageReferenced(&sCheck, i)==0 ){
+        checkAppendMsg(&sCheck, "Page %d is never used", i);
+      }
 #else
-    /* If the database supports auto-vacuum, make sure no tables contain
-    ** references to pointer-map pages.
-    */
-    if( getPageReferenced(&sCheck, i)==0 &&
-       (PTRMAP_PAGENO(pBt, i)!=i || !pBt->autoVacuum) ){
-      checkAppendMsg(&sCheck, "Page %d is never used", i);
-    }
-    if( getPageReferenced(&sCheck, i)!=0 &&
-       (PTRMAP_PAGENO(pBt, i)==i && pBt->autoVacuum) ){
-      checkAppendMsg(&sCheck, "Pointer map page %d is referenced", i);
-    }
+      /* If the database supports auto-vacuum, make sure no tables contain
+      ** references to pointer-map pages.
+      */
+      if( getPageReferenced(&sCheck, i)==0 &&
+         (PTRMAP_PAGENO(pBt, i)!=i || !pBt->autoVacuum) ){
+        checkAppendMsg(&sCheck, "Page %d is never used", i);
+      }
+      if( getPageReferenced(&sCheck, i)!=0 &&
+         (PTRMAP_PAGENO(pBt, i)==i && pBt->autoVacuum) ){
+        checkAppendMsg(&sCheck, "Pointer map page %d is referenced", i);
+      }
 #endif
+    }
   }
 
   /* Clean  up and report errors.
@@ -78016,7 +79407,7 @@ SQLITE_PRIVATE char *sqlite3BtreeIntegrityCheck(
 integrity_ck_cleanup:
   sqlite3PageFree(sCheck.heap);
   sqlite3_free(sCheck.aPgRef);
-  if( sCheck.mallocFailed ){
+  if( sCheck.bOomFault ){
     sqlite3_str_reset(&sCheck.errMsg);
     sCheck.nErr++;
   }
@@ -78136,13 +79527,13 @@ SQLITE_PRIVATE void *sqlite3BtreeSchema(Btree *p, int nBytes, void(*xFree)(void
 /*
 ** Return SQLITE_LOCKED_SHAREDCACHE if another user of the same shared
 ** btree as the argument handle holds an exclusive lock on the
-** sqlite_master table. Otherwise SQLITE_OK.
+** sqlite_schema table. Otherwise SQLITE_OK.
 */
 SQLITE_PRIVATE int sqlite3BtreeSchemaLocked(Btree *p){
   int rc;
   assert( sqlite3_mutex_held(p->db->mutex) );
   sqlite3BtreeEnter(p);
-  rc = querySharedCacheTableLock(p, MASTER_ROOT, READ_LOCK);
+  rc = querySharedCacheTableLock(p, SCHEMA_ROOT, READ_LOCK);
   assert( rc==SQLITE_OK || rc==SQLITE_LOCKED_SHAREDCACHE );
   sqlite3BtreeLeave(p);
   return rc;
@@ -78430,7 +79821,7 @@ static Btree *findBtree(sqlite3 *pErrorDb, sqlite3 *pDb, const char *zDb){
 */
 static int setDestPgsz(sqlite3_backup *p){
   int rc;
-  rc = sqlite3BtreeSetPageSize(p->pDest,sqlite3BtreeGetPageSize(p->pSrc),-1,0);
+  rc = sqlite3BtreeSetPageSize(p->pDest,sqlite3BtreeGetPageSize(p->pSrc),0,0);
   return rc;
 }
 
@@ -78574,13 +79965,15 @@ static int backupOnePage(
   int nDestPgsz = sqlite3BtreeGetPageSize(p->pDest);
   const int nCopy = MIN(nSrcPgsz, nDestPgsz);
   const i64 iEnd = (i64)iSrcPg*(i64)nSrcPgsz;
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
   /* Use BtreeGetReserveNoMutex() for the source b-tree, as although it is
   ** guaranteed that the shared-mutex is held by this thread, handle
   ** p->pSrc may not actually be the owner.  */
   int nSrcReserve = sqlite3BtreeGetReserveNoMutex(p->pSrc);
-  int nDestReserve = sqlite3BtreeGetOptimalReserve(p->pDest);
+  int nDestReserve = sqlite3BtreeGetRequestedReserve(p->pDest);
 #endif
+/* END SQLCIPHER */
   int rc = SQLITE_OK;
   i64 iOff;
 
@@ -78597,6 +79990,7 @@ static int backupOnePage(
     rc = SQLITE_READONLY;
   }
 
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
   /* Backup is not possible if the page size of the destination is changing
   ** and a codec is in use.
@@ -78616,6 +80010,7 @@ static int backupOnePage(
     if( rc==SQLITE_OK && newPgsz!=(u32)nSrcPgsz ) rc = SQLITE_READONLY;
   }
 #endif
+/* END SQLCIPHER */
 
   /* This loop runs once for each destination page spanned by the source
   ** page. For each iteration, variable iOff is set to the byte offset
@@ -79112,9 +80507,11 @@ SQLITE_PRIVATE int sqlite3BtreeCopyFile(Btree *pTo, Btree *pFrom){
   b.pDest = pTo;
   b.iNext = 1;
 
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
   sqlite3PagerAlignReserve(sqlite3BtreePager(pTo), sqlite3BtreePager(pFrom));
 #endif
+/* END SQLCIPHER */
 
   /* 0x7FFFFFFF is the hard limit for the number of pages in a database
   ** file. By passing this as the number of pages to copy to
@@ -79248,16 +80645,25 @@ SQLITE_PRIVATE int sqlite3VdbeCheckMemInvariants(Mem *p){
 static void vdbeMemRenderNum(int sz, char *zBuf, Mem *p){
   StrAccum acc;
   assert( p->flags & (MEM_Int|MEM_Real|MEM_IntReal) );
-  sqlite3StrAccumInit(&acc, 0, zBuf, sz, 0);
+  assert( sz>22 );
   if( p->flags & MEM_Int ){
-    sqlite3_str_appendf(&acc, "%lld", p->u.i);
-  }else if( p->flags & MEM_IntReal ){
-    sqlite3_str_appendf(&acc, "%!.15g", (double)p->u.i);
+#if GCC_VERSION>=7000000
+    /* Work-around for GCC bug
+    ** https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96270 */
+    i64 x;
+    assert( (p->flags&MEM_Int)*2==sizeof(x) );
+    memcpy(&x, (char*)&p->u, (p->flags&MEM_Int)*2);
+    sqlite3Int64ToText(x, zBuf);
+#else
+    sqlite3Int64ToText(p->u.i, zBuf);
+#endif
   }else{
-    sqlite3_str_appendf(&acc, "%!.15g", p->u.r);
+    sqlite3StrAccumInit(&acc, 0, zBuf, sz, 0);
+    sqlite3_str_appendf(&acc, "%!.15g",
+         (p->flags & MEM_IntReal)!=0 ? (double)p->u.i : p->u.r);
+    assert( acc.zText==zBuf && acc.mxAlloc<=0 );
+    zBuf[acc.nChar] = 0; /* Fast version of sqlite3StrAccumFinish(&acc) */
   }
-  assert( acc.zText==zBuf && acc.mxAlloc<=0 );
-  zBuf[acc.nChar] = 0; /* Fast version of sqlite3StrAccumFinish(&acc) */
 }
 
 #ifdef SQLITE_DEBUG
@@ -79604,15 +81010,11 @@ SQLITE_PRIVATE int sqlite3VdbeMemFinalize(Mem *pMem, FuncDef *pFunc){
 #ifndef SQLITE_OMIT_WINDOWFUNC
 SQLITE_PRIVATE int sqlite3VdbeMemAggValue(Mem *pAccum, Mem *pOut, FuncDef *pFunc){
   sqlite3_context ctx;
-  Mem t;
   assert( pFunc!=0 );
   assert( pFunc->xValue!=0 );
   assert( (pAccum->flags & MEM_Null)!=0 || pFunc==pAccum->u.pDef );
   assert( pAccum->db==0 || sqlite3_mutex_held(pAccum->db->mutex) );
   memset(&ctx, 0, sizeof(ctx));
-  memset(&t, 0, sizeof(t));
-  t.flags = MEM_Null;
-  t.db = pAccum->db;
   sqlite3VdbeMemSetNull(pOut);
   ctx.pOut = pOut;
   ctx.pMem = pAccum;
@@ -79738,8 +81140,7 @@ SQLITE_PRIVATE i64 sqlite3VdbeIntValue(Mem *pMem){
     return pMem->u.i;
   }else if( flags & MEM_Real ){
     return doubleToInt64(pMem->u.r);
-  }else if( flags & (MEM_Str|MEM_Blob) ){
-    assert( pMem->z || pMem->n==0 );
+  }else if( (flags & (MEM_Str|MEM_Blob))!=0 && pMem->z!=0 ){
     return memIntValue(pMem);
   }else{
     return 0;
@@ -79896,8 +81297,8 @@ SQLITE_PRIVATE int sqlite3VdbeMemNumerify(Mem *pMem){
 ** affinity even if that results in loss of data.  This routine is
 ** used (for example) to implement the SQL "cast()" operator.
 */
-SQLITE_PRIVATE void sqlite3VdbeMemCast(Mem *pMem, u8 aff, u8 encoding){
-  if( pMem->flags & MEM_Null ) return;
+SQLITE_PRIVATE int sqlite3VdbeMemCast(Mem *pMem, u8 aff, u8 encoding){
+  if( pMem->flags & MEM_Null ) return SQLITE_OK;
   switch( aff ){
     case SQLITE_AFF_BLOB: {   /* Really a cast to BLOB */
       if( (pMem->flags & MEM_Blob)==0 ){
@@ -79928,9 +81329,10 @@ SQLITE_PRIVATE void sqlite3VdbeMemCast(Mem *pMem, u8 aff, u8 encoding){
       sqlite3ValueApplyAffinity(pMem, SQLITE_AFF_TEXT, encoding);
       assert( pMem->flags & MEM_Str || pMem->db->mallocFailed );
       pMem->flags &= ~(MEM_Int|MEM_Real|MEM_IntReal|MEM_Blob|MEM_Zero);
-      break;
+      return sqlite3VdbeChangeEncoding(pMem, encoding);
     }
   }
+  return SQLITE_OK;
 }
 
 /*
@@ -80096,25 +81498,27 @@ SQLITE_PRIVATE int sqlite3VdbeMemTooBig(Mem *p){
 ** its link to a shallow copy and by marking any current shallow
 ** copies of this cell as invalid.
 **
-** This is used for testing and debugging only - to make sure shallow
-** copies are not misused.
+** This is used for testing and debugging only - to help ensure that shallow
+** copies (created by OP_SCopy) are not misused.
 */
 SQLITE_PRIVATE void sqlite3VdbeMemAboutToChange(Vdbe *pVdbe, Mem *pMem){
   int i;
   Mem *pX;
-  for(i=0, pX=pVdbe->aMem; i<pVdbe->nMem; i++, pX++){
+  for(i=1, pX=pVdbe->aMem+1; i<pVdbe->nMem; i++, pX++){
     if( pX->pScopyFrom==pMem ){
-      /* If pX is marked as a shallow copy of pMem, then verify that
+      u16 mFlags;
+      if( pVdbe->db->flags & SQLITE_VdbeTrace ){
+        sqlite3DebugPrintf("Invalidate R[%d] due to change in R[%d]\n",
+          (int)(pX - pVdbe->aMem), (int)(pMem - pVdbe->aMem));
+      }
+      /* If pX is marked as a shallow copy of pMem, then try to verify that
       ** no significant changes have been made to pX since the OP_SCopy.
       ** A significant change would indicated a missed call to this
       ** function for pX.  Minor changes, such as adding or removing a
       ** dual type, are allowed, as long as the underlying value is the
       ** same. */
-      u16 mFlags = pMem->flags & pX->flags & pX->mScopyFlags;
+      mFlags = pMem->flags & pX->flags & pX->mScopyFlags;
       assert( (mFlags&(MEM_Int|MEM_IntReal))==0 || pMem->u.i==pX->u.i );
-      assert( (mFlags&MEM_Real)==0 || pMem->u.r==pX->u.r );
-      assert( (mFlags&MEM_Str)==0  || (pMem->n==pX->n && pMem->z==pX->z) );
-      assert( (mFlags&MEM_Blob)==0  || sqlite3BlobCompare(pMem,pX)==0 );
 
       /* pMem is the register that is changing.  But also mark pX as
       ** undefined so that we can quickly detect the shallow-copy error */
@@ -80126,7 +81530,6 @@ SQLITE_PRIVATE void sqlite3VdbeMemAboutToChange(Vdbe *pVdbe, Mem *pMem){
 }
 #endif /* SQLITE_DEBUG */
 
-
 /*
 ** Make an shallow copy of pFrom into pTo.  Prior contents of
 ** pTo are freed.  The pFrom->z field is not duplicated.  If
@@ -80272,10 +81675,19 @@ SQLITE_PRIVATE int sqlite3VdbeMemSetStr(
 
   pMem->n = nByte;
   pMem->flags = flags;
-  pMem->enc = (enc==0 ? SQLITE_UTF8 : enc);
+  if( enc ){
+    pMem->enc = enc;
+#ifdef SQLITE_ENABLE_SESSION
+  }else if( pMem->db==0 ){
+    pMem->enc = SQLITE_UTF8;
+#endif
+  }else{
+    assert( pMem->db!=0 );
+    pMem->enc = ENC(pMem->db);
+  }
 
 #ifndef SQLITE_OMIT_UTF16
-  if( pMem->enc!=SQLITE_UTF8 && sqlite3VdbeMemHandleBom(pMem) ){
+  if( enc>SQLITE_UTF8 && sqlite3VdbeMemHandleBom(pMem) ){
     return SQLITE_NOMEM_BKPT;
   }
 #endif
@@ -80302,7 +81714,7 @@ SQLITE_PRIVATE int sqlite3VdbeMemSetStr(
 ** If this routine fails for any reason (malloc returns NULL or unable
 ** to read from the disk) then the pMem is left in an inconsistent state.
 */
-static SQLITE_NOINLINE int vdbeMemFromBtreeResize(
+SQLITE_PRIVATE int sqlite3VdbeMemFromBtree(
   BtCursor *pCur,   /* Cursor pointing at record to retrieve. */
   u32 offset,       /* Offset from the start of data to return bytes from. */
   u32 amt,          /* Number of bytes to return. */
@@ -80325,13 +81737,11 @@ static SQLITE_NOINLINE int vdbeMemFromBtreeResize(
   }
   return rc;
 }
-SQLITE_PRIVATE int sqlite3VdbeMemFromBtree(
+SQLITE_PRIVATE int sqlite3VdbeMemFromBtreeZeroOffset(
   BtCursor *pCur,   /* Cursor pointing at record to retrieve. */
-  u32 offset,       /* Offset from the start of data to return bytes from. */
   u32 amt,          /* Number of bytes to return. */
   Mem *pMem         /* OUT: Return data in this Mem structure. */
 ){
-  char *zData;        /* Data from the btree layer */
   u32 available = 0;  /* Number of bytes available on the local btree page */
   int rc = SQLITE_OK; /* Return code */
 
@@ -80341,15 +81751,14 @@ SQLITE_PRIVATE int sqlite3VdbeMemFromBtree(
   /* Note: the calls to BtreeKeyFetch() and DataFetch() below assert()
   ** that both the BtShared and database handle mutexes are held. */
   assert( !sqlite3VdbeMemIsRowSet(pMem) );
-  zData = (char *)sqlite3BtreePayloadFetch(pCur, &available);
-  assert( zData!=0 );
+  pMem->z = (char *)sqlite3BtreePayloadFetch(pCur, &available);
+  assert( pMem->z!=0 );
 
-  if( offset+amt<=available ){
-    pMem->z = &zData[offset];
+  if( amt<=available ){
     pMem->flags = MEM_Blob|MEM_Ephem;
     pMem->n = (int)amt;
   }else{
-    rc = vdbeMemFromBtreeResize(pCur, offset, amt, pMem);
+    rc = sqlite3VdbeMemFromBtree(pCur, 0, amt, pMem);
   }
 
   return rc;
@@ -80692,7 +82101,11 @@ static int valueFromExpr(
       if( pVal->flags & MEM_Real ){
         pVal->u.r = -pVal->u.r;
       }else if( pVal->u.i==SMALLEST_INT64 ){
+#ifndef SQLITE_OMIT_FLOATING_POINT
         pVal->u.r = -(double)SMALLEST_INT64;
+#else
+        pVal->u.r = LARGEST_INT64;
+#endif
         MemSetTypeFlag(pVal, MEM_Real);
       }else{
         pVal->u.i = -pVal->u.i;
@@ -81051,6 +82464,10 @@ SQLITE_PRIVATE int sqlite3ValueBytes(sqlite3_value *pVal, u8 enc){
 /* #include "sqliteInt.h" */
 /* #include "vdbeInt.h" */
 
+/* Forward references */
+static void freeEphemeralFunction(sqlite3 *db, FuncDef *pDef);
+static void vdbeFreeOpArray(sqlite3 *, Op *, int);
+
 /*
 ** Create a new virtual database engine.
 */
@@ -81079,6 +82496,13 @@ SQLITE_PRIVATE Vdbe *sqlite3VdbeCreate(Parse *pParse){
 }
 
 /*
+** Return the Parse object that owns a Vdbe object.
+*/
+SQLITE_PRIVATE Parse *sqlite3VdbeParser(Vdbe *p){
+  return p->pParse;
+}
+
+/*
 ** Change the error string stored in Vdbe.zErrMsg
 */
 SQLITE_PRIVATE void sqlite3VdbeError(Vdbe *p, const char *zFormat, ...){
@@ -81158,7 +82582,7 @@ SQLITE_PRIVATE void sqlite3VdbeSwap(Vdbe *pA, Vdbe *pB){
   zTmp = pA->zSql;
   pA->zSql = pB->zSql;
   pB->zSql = zTmp;
-#if 0
+#ifdef SQLITE_ENABLE_NORMALIZE
   zTmp = pA->zNormSql;
   pA->zNormSql = pB->zNormSql;
   pB->zNormSql = zTmp;
@@ -81219,9 +82643,16 @@ static int growOpArray(Vdbe *v, int nOp){
 #ifdef SQLITE_DEBUG
 /* This routine is just a convenient place to set a breakpoint that will
 ** fire after each opcode is inserted and displayed using
-** "PRAGMA vdbe_addoptrace=on".
+** "PRAGMA vdbe_addoptrace=on".  Parameters "pc" (program counter) and
+** pOp are available to make the breakpoint conditional.
+**
+** Other useful labels for breakpoints include:
+**   test_trace_breakpoint(pc,pOp)
+**   sqlite3CorruptError(lineno)
+**   sqlite3MisuseError(lineno)
+**   sqlite3CantopenError(lineno)
 */
-static void test_addop_breakpoint(void){
+static void test_addop_breakpoint(int pc, Op *pOp){
   static int n = 0;
   n++;
 }
@@ -81274,7 +82705,7 @@ SQLITE_PRIVATE int sqlite3VdbeAddOp3(Vdbe *p, int op, int p1, int p2, int p3){
 #ifdef SQLITE_DEBUG
   if( p->db->flags & SQLITE_VdbeAddopTrace ){
     sqlite3VdbePrintOp(0, i, &p->aOp[i]);
-    test_addop_breakpoint();
+    test_addop_breakpoint(i, &p->aOp[i]);
   }
 #endif
 #ifdef VDBE_PROFILE
@@ -81358,6 +82789,49 @@ SQLITE_PRIVATE int sqlite3VdbeAddOp4(
 }
 
 /*
+** Add an OP_Function or OP_PureFunc opcode.
+**
+** The eCallCtx argument is information (typically taken from Expr.op2)
+** that describes the calling context of the function.  0 means a general
+** function call.  NC_IsCheck means called by a check constraint,
+** NC_IdxExpr means called as part of an index expression.  NC_PartIdx
+** means in the WHERE clause of a partial index.  NC_GenCol means called
+** while computing a generated column value.  0 is the usual case.
+*/
+SQLITE_PRIVATE int sqlite3VdbeAddFunctionCall(
+  Parse *pParse,        /* Parsing context */
+  int p1,               /* Constant argument mask */
+  int p2,               /* First argument register */
+  int p3,               /* Register into which results are written */
+  int nArg,             /* Number of argument */
+  const FuncDef *pFunc, /* The function to be invoked */
+  int eCallCtx          /* Calling context */
+){
+  Vdbe *v = pParse->pVdbe;
+  int nByte;
+  int addr;
+  sqlite3_context *pCtx;
+  assert( v );
+  nByte = sizeof(*pCtx) + (nArg-1)*sizeof(sqlite3_value*);
+  pCtx = sqlite3DbMallocRawNN(pParse->db, nByte);
+  if( pCtx==0 ){
+    assert( pParse->db->mallocFailed );
+    freeEphemeralFunction(pParse->db, (FuncDef*)pFunc);
+    return 0;
+  }
+  pCtx->pOut = 0;
+  pCtx->pFunc = (FuncDef*)pFunc;
+  pCtx->pVdbe = 0;
+  pCtx->isError = 0;
+  pCtx->argc = nArg;
+  pCtx->iOp = sqlite3VdbeCurrentAddr(v);
+  addr = sqlite3VdbeAddOp4(v, eCallCtx ? OP_PureFunc : OP_Function,
+                           p1, p2, p3, (char*)pCtx, P4_FUNCCTX);
+  sqlite3VdbeChangeP5(v, eCallCtx & NC_SelfRef);
+  return addr;
+}
+
+/*
 ** Add an opcode that includes the p4 value with a P4_INT64 or
 ** P4_REAL type.
 */
@@ -81399,7 +82873,7 @@ SQLITE_PRIVATE void sqlite3ExplainBreakpoint(const char *z1, const char *z2){
 #endif
 
 /*
-** Add a new OP_ opcode.
+** Add a new OP_Explain opcode.
 **
 ** If the bPush flag is true, then make this opcode the parent for
 ** subsequent Explains until sqlite3VdbeExplainPop() is called.
@@ -81649,6 +83123,7 @@ static Op *opIterNext(VdbeOpIter *p){
 **   *  OP_HaltIfNull with P1=SQLITE_CONSTRAINT and P2=OE_Abort.
 **   *  OP_Destroy
 **   *  OP_VUpdate
+**   *  OP_VCreate
 **   *  OP_VRename
 **   *  OP_FkCounter with P2==0 (immediate foreign key constraint)
 **   *  OP_CreateBtree/BTREE_INTKEY and OP_InitCoroutine
@@ -81676,6 +83151,7 @@ SQLITE_PRIVATE int sqlite3VdbeAssertMayAbort(Vdbe *v, int mayAbort){
     int opcode = pOp->opcode;
     if( opcode==OP_Destroy || opcode==OP_VUpdate || opcode==OP_VRename
      || opcode==OP_VDestroy
+     || opcode==OP_VCreate
      || (opcode==OP_ParseSchema && pOp->p4.z==0)
      || ((opcode==OP_Halt || opcode==OP_HaltIfNull)
       && ((pOp->p1)!=SQLITE_OK && pOp->p2==OE_Abort))
@@ -81781,7 +83257,7 @@ static void resolveP2Values(Vdbe *p, int *pMaxFuncArgs){
       switch( pOp->opcode ){
         case OP_Transaction: {
           if( pOp->p2!=0 ) p->readOnly = 0;
-          /* fall thru */
+          /* no break */ deliberate_fall_through
         }
         case OP_AutoCommit:
         case OP_Savepoint: {
@@ -81828,6 +83304,7 @@ static void resolveP2Values(Vdbe *p, int *pMaxFuncArgs){
           n = pOp[-1].p1;
           if( n>nMaxArgs ) nMaxArgs = n;
           /* Fall through into the default case */
+          /* no break */ deliberate_fall_through
         }
 #endif
         default: {
@@ -82038,6 +83515,34 @@ SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe *p, int addr){
   sqlite3VdbeChangeP2(p, addr, p->nOp);
 }
 
+/*
+** Change the P2 operand of the jump instruction at addr so that
+** the jump lands on the next opcode.  Or if the jump instruction was
+** the previous opcode (and is thus a no-op) then simply back up
+** the next instruction counter by one slot so that the jump is
+** overwritten by the next inserted opcode.
+**
+** This routine is an optimization of sqlite3VdbeJumpHere() that
+** strives to omit useless byte-code like this:
+**
+**        7   Once 0 8 0
+**        8   ...
+*/
+SQLITE_PRIVATE void sqlite3VdbeJumpHereOrPopInst(Vdbe *p, int addr){
+  if( addr==p->nOp-1 ){
+    assert( p->aOp[addr].opcode==OP_Once
+         || p->aOp[addr].opcode==OP_If
+         || p->aOp[addr].opcode==OP_FkIfZero );
+    assert( p->aOp[addr].p4type==0 );
+#ifdef SQLITE_VDBE_COVERAGE
+    sqlite3VdbeGetOp(p,-1)->iSrcLine = 0;  /* Erase VdbeCoverage() macros */
+#endif
+    p->nOp--;
+  }else{
+    sqlite3VdbeChangeP2(p, addr, p->nOp);
+  }
+}
+
 
 /*
 ** If the input FuncDef structure is ephemeral, then free it.  If
@@ -82049,8 +83554,6 @@ static void freeEphemeralFunction(sqlite3 *db, FuncDef *pDef){
   }
 }
 
-static void vdbeFreeOpArray(sqlite3 *, Op *, int);
-
 /*
 ** Delete a P4 value if necessary.
 */
@@ -82060,7 +83563,7 @@ static SQLITE_NOINLINE void freeP4Mem(sqlite3 *db, Mem *p){
 }
 static SQLITE_NOINLINE void freeP4FuncCtx(sqlite3 *db, sqlite3_context *p){
   freeEphemeralFunction(db, p->pFunc);
- sqlite3DbFreeNN(db, p);
+  sqlite3DbFreeNN(db, p);
 }
 static void freeP4(sqlite3 *db, int p4type, void *p4){
   assert( db );
@@ -82135,6 +83638,13 @@ SQLITE_PRIVATE void sqlite3VdbeLinkSubProgram(Vdbe *pVdbe, SubProgram *p){
 }
 
 /*
+** Return true if the given Vdbe has any SubPrograms.
+*/
+SQLITE_PRIVATE int sqlite3VdbeHasSubProgram(Vdbe *pVdbe){
+  return pVdbe->pProgram!=0;
+}
+
+/*
 ** Change the opcode at addr into OP_Noop
 */
 SQLITE_PRIVATE int sqlite3VdbeChangeToNoop(Vdbe *p, int addr){
@@ -82161,6 +83671,41 @@ SQLITE_PRIVATE int sqlite3VdbeDeletePriorOpcode(Vdbe *p, u8 op){
   }
 }
 
+#ifdef SQLITE_DEBUG
+/*
+** Generate an OP_ReleaseReg opcode to indicate that a range of
+** registers, except any identified by mask, are no longer in use.
+*/
+SQLITE_PRIVATE void sqlite3VdbeReleaseRegisters(
+  Parse *pParse,       /* Parsing context */
+  int iFirst,          /* Index of first register to be released */
+  int N,               /* Number of registers to release */
+  u32 mask,            /* Mask of registers to NOT release */
+  int bUndefine        /* If true, mark registers as undefined */
+){
+  if( N==0 ) return;
+  assert( pParse->pVdbe );
+  assert( iFirst>=1 );
+  assert( iFirst+N-1<=pParse->nMem );
+  if( N<=31 && mask!=0 ){
+    while( N>0 && (mask&1)!=0 ){
+      mask >>= 1;
+      iFirst++;
+      N--;
+    }
+    while( N>0 && N<=32 && (mask & MASKBIT32(N-1))!=0 ){
+      mask &= ~MASKBIT32(N-1);
+      N--;
+    }
+  }
+  if( N>0 ){
+    sqlite3VdbeAddOp3(pParse->pVdbe, OP_ReleaseReg, iFirst, N, *(int*)&mask);
+    if( bUndefine ) sqlite3VdbeChangeP5(pParse->pVdbe, 1);
+  }
+}
+#endif /* SQLITE_DEBUG */
+
+
 /*
 ** Change the value of the P4 operand for a specific instruction.
 ** This routine is useful when a large program is loaded from a
@@ -82278,7 +83823,8 @@ SQLITE_PRIVATE void sqlite3VdbeSetP4KeyInfo(Parse *pParse, Index *pIdx){
 */
 static void vdbeVComment(Vdbe *p, const char *zFormat, va_list ap){
   assert( p->nOp>0 || p->aOp==0 );
-  assert( p->aOp==0 || p->aOp[p->nOp-1].zComment==0 || p->db->mallocFailed );
+  assert( p->aOp==0 || p->aOp[p->nOp-1].zComment==0 || p->db->mallocFailed
+          || p->pParse->nErr>0 );
   if( p->nOp ){
     assert( p->aOp );
     sqlite3DbFree(p->db, p->aOp[p->nOp-1].zComment);
@@ -82368,17 +83914,19 @@ static int translateP(char c, const Op *pOp){
 **       "PX@PY+1" ->  "r[X..X+Y]"    or "r[x]" if y is 0
 **       "PY..PY"  ->  "r[X..Y]"      or "r[x]" if y<=x
 */
-static int displayComment(
+SQLITE_PRIVATE char *sqlite3VdbeDisplayComment(
+  sqlite3 *db,       /* Optional - Oom error reporting only */
   const Op *pOp,     /* The opcode to be commented */
-  const char *zP4,   /* Previously obtained value for P4 */
-  char *zTemp,       /* Write result here */
-  int nTemp          /* Space available in zTemp[] */
+  const char *zP4    /* Previously obtained value for P4 */
 ){
   const char *zOpName;
   const char *zSynopsis;
   int nOpName;
-  int ii, jj;
+  int ii;
   char zAlt[50];
+  StrAccum x;
+
+  sqlite3StrAccumInit(&x, 0, 0, 0, SQLITE_MAX_LENGTH);
   zOpName = sqlite3OpcodeName(pOp->opcode);
   nOpName = sqlite3Strlen30(zOpName);
   if( zOpName[nOpName+1] ){
@@ -82393,53 +83941,64 @@ static int displayComment(
       }
       zSynopsis = zAlt;
     }
-    for(ii=jj=0; jj<nTemp-1 && (c = zSynopsis[ii])!=0; ii++){
+    for(ii=0; (c = zSynopsis[ii])!=0; ii++){
       if( c=='P' ){
         c = zSynopsis[++ii];
         if( c=='4' ){
-          sqlite3_snprintf(nTemp-jj, zTemp+jj, "%s", zP4);
+          sqlite3_str_appendall(&x, zP4);
         }else if( c=='X' ){
-          sqlite3_snprintf(nTemp-jj, zTemp+jj, "%s", pOp->zComment);
+          sqlite3_str_appendall(&x, pOp->zComment);
           seenCom = 1;
         }else{
           int v1 = translateP(c, pOp);
           int v2;
-          sqlite3_snprintf(nTemp-jj, zTemp+jj, "%d", v1);
           if( strncmp(zSynopsis+ii+1, "@P", 2)==0 ){
             ii += 3;
-            jj += sqlite3Strlen30(zTemp+jj);
             v2 = translateP(zSynopsis[ii], pOp);
             if( strncmp(zSynopsis+ii+1,"+1",2)==0 ){
               ii += 2;
               v2++;
             }
-            if( v2>1 ){
-              sqlite3_snprintf(nTemp-jj, zTemp+jj, "..%d", v1+v2-1);
+            if( v2<2 ){
+              sqlite3_str_appendf(&x, "%d", v1);
+            }else{
+              sqlite3_str_appendf(&x, "%d..%d", v1, v1+v2-1);
+            }
+          }else if( strncmp(zSynopsis+ii+1, "@NP", 3)==0 ){
+            sqlite3_context *pCtx = pOp->p4.pCtx;
+            if( pOp->p4type!=P4_FUNCCTX || pCtx->argc==1 ){
+              sqlite3_str_appendf(&x, "%d", v1);
+            }else if( pCtx->argc>1 ){
+              sqlite3_str_appendf(&x, "%d..%d", v1, v1+pCtx->argc-1);
+            }else{
+              assert( x.nChar>2 );
+              x.nChar -= 2;
+              ii++;
+            }
+            ii += 3;
+          }else{
+            sqlite3_str_appendf(&x, "%d", v1);
+            if( strncmp(zSynopsis+ii+1, "..P3", 4)==0 && pOp->p3==0 ){
+              ii += 4;
             }
-          }else if( strncmp(zSynopsis+ii+1, "..P3", 4)==0 && pOp->p3==0 ){
-            ii += 4;
           }
         }
-        jj += sqlite3Strlen30(zTemp+jj);
       }else{
-        zTemp[jj++] = c;
+        sqlite3_str_appendchar(&x, 1, c);
       }
     }
-    if( !seenCom && jj<nTemp-5 && pOp->zComment ){
-      sqlite3_snprintf(nTemp-jj, zTemp+jj, "; %s", pOp->zComment);
-      jj += sqlite3Strlen30(zTemp+jj);
+    if( !seenCom && pOp->zComment ){
+      sqlite3_str_appendf(&x, "; %s", pOp->zComment);
     }
-    if( jj<nTemp ) zTemp[jj] = 0;
   }else if( pOp->zComment ){
-    sqlite3_snprintf(nTemp, zTemp, "%s", pOp->zComment);
-    jj = sqlite3Strlen30(zTemp);
-  }else{
-    zTemp[0] = 0;
-    jj = 0;
+    sqlite3_str_appendall(&x, pOp->zComment);
   }
-  return jj;
+  if( (x.accError & SQLITE_NOMEM)!=0 && db!=0 ){
+    sqlite3OomFault(db);
+  }
+  return sqlite3StrAccumFinish(&x);
 }
-#endif /* SQLITE_DEBUG */
+#endif /* SQLITE_ENABLE_EXPLAIN_COMMENTS */
 
 #if VDBE_DISPLAY_P4 && defined(SQLITE_ENABLE_CURSOR_HINTS)
 /*
@@ -82520,11 +84079,11 @@ static void displayP4Expr(StrAccum *p, Expr *pExpr){
 ** Compute a string that describes the P4 parameter for an opcode.
 ** Use zTemp for any required temporary buffer space.
 */
-static char *displayP4(Op *pOp, char *zTemp, int nTemp){
-  char *zP4 = zTemp;
+SQLITE_PRIVATE char *sqlite3VdbeDisplayP4(sqlite3 *db, Op *pOp){
+  char *zP4 = 0;
   StrAccum x;
-  assert( nTemp>=20 );
-  sqlite3StrAccumInit(&x, 0, zTemp, nTemp, 0);
+
+  sqlite3StrAccumInit(&x, 0, 0, 0, SQLITE_MAX_LENGTH);
   switch( pOp->p4type ){
     case P4_KEYINFO: {
       int j;
@@ -82550,8 +84109,11 @@ static char *displayP4(Op *pOp, char *zTemp, int nTemp){
     }
 #endif
     case P4_COLLSEQ: {
+      static const char *const encnames[] = {"?", "8", "16LE", "16BE"};
       CollSeq *pColl = pOp->p4.pColl;
-      sqlite3_str_appendf(&x, "(%.20s)", pColl->zName);
+      assert( pColl->enc>=0 && pColl->enc<4 );
+      sqlite3_str_appendf(&x, "%.18s-%s", pColl->zName,
+                          encnames[pColl->enc]);
       break;
     }
     case P4_FUNCDEF: {
@@ -82559,13 +84121,11 @@ static char *displayP4(Op *pOp, char *zTemp, int nTemp){
       sqlite3_str_appendf(&x, "%s(%d)", pDef->zName, pDef->nArg);
       break;
     }
-#if defined(SQLITE_DEBUG) || defined(VDBE_PROFILE)
     case P4_FUNCCTX: {
       FuncDef *pDef = pOp->p4.pCtx->pFunc;
       sqlite3_str_appendf(&x, "%s(%d)", pDef->zName, pDef->nArg);
       break;
     }
-#endif
     case P4_INT64: {
       sqlite3_str_appendf(&x, "%lld", *pOp->p4.pI64);
       break;
@@ -82602,41 +84162,37 @@ static char *displayP4(Op *pOp, char *zTemp, int nTemp){
     }
 #endif
     case P4_INTARRAY: {
-      int i;
-      int *ai = pOp->p4.ai;
-      int n = ai[0];   /* The first element of an INTARRAY is always the
+      u32 i;
+      u32 *ai = pOp->p4.ai;
+      u32 n = ai[0];   /* The first element of an INTARRAY is always the
                        ** count of the number of elements to follow */
       for(i=1; i<=n; i++){
-        sqlite3_str_appendf(&x, ",%d", ai[i]);
+        sqlite3_str_appendf(&x, "%c%u", (i==1 ? '[' : ','), ai[i]);
       }
-      zTemp[0] = '[';
       sqlite3_str_append(&x, "]", 1);
       break;
     }
     case P4_SUBPROGRAM: {
-      sqlite3_str_appendf(&x, "program");
+      zP4 = "program";
       break;
     }
     case P4_DYNBLOB:
     case P4_ADVANCE: {
-      zTemp[0] = 0;
       break;
     }
     case P4_TABLE: {
-      sqlite3_str_appendf(&x, "%s", pOp->p4.pTab->zName);
+      zP4 = pOp->p4.pTab->zName;
       break;
     }
     default: {
       zP4 = pOp->p4.z;
-      if( zP4==0 ){
-        zP4 = zTemp;
-        zTemp[0] = 0;
-      }
     }
   }
-  sqlite3StrAccumFinish(&x);
-  assert( zP4!=0 );
-  return zP4;
+  if( zP4 ) sqlite3_str_appendall(&x, zP4);
+  if( (x.accError & SQLITE_NOMEM)!=0 ){
+    sqlite3OomFault(db);
+  }
+  return sqlite3StrAccumFinish(&x);
 }
 #endif /* VDBE_DISPLAY_P4 */
 
@@ -82726,24 +84282,30 @@ SQLITE_PRIVATE void sqlite3VdbeLeave(Vdbe *p){
 */
 SQLITE_PRIVATE void sqlite3VdbePrintOp(FILE *pOut, int pc, VdbeOp *pOp){
   char *zP4;
-  char zPtr[50];
-  char zCom[100];
+  char *zCom;
+  sqlite3 dummyDb;
   static const char *zFormat1 = "%4d %-13s %4d %4d %4d %-13s %.2X %s\n";
   if( pOut==0 ) pOut = stdout;
-  zP4 = displayP4(pOp, zPtr, sizeof(zPtr));
+  sqlite3BeginBenignMalloc();
+  dummyDb.mallocFailed = 1;
+  zP4 = sqlite3VdbeDisplayP4(&dummyDb, pOp);
 #ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS
-  displayComment(pOp, zP4, zCom, sizeof(zCom));
+  zCom = sqlite3VdbeDisplayComment(0, pOp, zP4);
 #else
-  zCom[0] = 0;
+  zCom = 0;
 #endif
   /* NB:  The sqlite3OpcodeName() function is implemented by code created
   ** by the mkopcodeh.awk and mkopcodec.awk scripts which extract the
   ** information from the vdbe.c source text */
   fprintf(pOut, zFormat1, pc,
-      sqlite3OpcodeName(pOp->opcode), pOp->p1, pOp->p2, pOp->p3, zP4, pOp->p5,
-      zCom
+      sqlite3OpcodeName(pOp->opcode), pOp->p1, pOp->p2, pOp->p3,
+      zP4 ? zP4 : "", pOp->p5,
+      zCom ? zCom : ""
   );
   fflush(pOut);
+  sqlite3_free(zP4);
+  sqlite3_free(zCom);
+  sqlite3EndBenignMalloc();
 }
 #endif
 
@@ -82834,6 +84396,121 @@ SQLITE_PRIVATE void sqlite3VdbeFrameMemDel(void *pArg){
   pFrame->v->pDelFrame = pFrame;
 }
 
+#if defined(SQLITE_ENABLE_BYTECODE_VTAB) || !defined(SQLITE_OMIT_EXPLAIN)
+/*
+** Locate the next opcode to be displayed in EXPLAIN or EXPLAIN
+** QUERY PLAN output.
+**
+** Return SQLITE_ROW on success.  Return SQLITE_DONE if there are no
+** more opcodes to be displayed.
+*/
+SQLITE_PRIVATE int sqlite3VdbeNextOpcode(
+  Vdbe *p,         /* The statement being explained */
+  Mem *pSub,       /* Storage for keeping track of subprogram nesting */
+  int eMode,       /* 0: normal.  1: EQP.  2:  TablesUsed */
+  int *piPc,       /* IN/OUT: Current rowid.  Overwritten with next rowid */
+  int *piAddr,     /* OUT: Write index into (*paOp)[] here */
+  Op **paOp        /* OUT: Write the opcode array here */
+){
+  int nRow;                            /* Stop when row count reaches this */
+  int nSub = 0;                        /* Number of sub-vdbes seen so far */
+  SubProgram **apSub = 0;              /* Array of sub-vdbes */
+  int i;                               /* Next instruction address */
+  int rc = SQLITE_OK;                  /* Result code */
+  Op *aOp = 0;                         /* Opcode array */
+  int iPc;                             /* Rowid.  Copy of value in *piPc */
+
+  /* When the number of output rows reaches nRow, that means the
+  ** listing has finished and sqlite3_step() should return SQLITE_DONE.
+  ** nRow is the sum of the number of rows in the main program, plus
+  ** the sum of the number of rows in all trigger subprograms encountered
+  ** so far.  The nRow value will increase as new trigger subprograms are
+  ** encountered, but p->pc will eventually catch up to nRow.
+  */
+  nRow = p->nOp;
+  if( pSub!=0 ){
+    if( pSub->flags&MEM_Blob ){
+      /* pSub is initiallly NULL.  It is initialized to a BLOB by
+      ** the P4_SUBPROGRAM processing logic below */
+      nSub = pSub->n/sizeof(Vdbe*);
+      apSub = (SubProgram **)pSub->z;
+    }
+    for(i=0; i<nSub; i++){
+      nRow += apSub[i]->nOp;
+    }
+  }
+  iPc = *piPc;
+  while(1){  /* Loop exits via break */
+    i = iPc++;
+    if( i>=nRow ){
+      p->rc = SQLITE_OK;
+      rc = SQLITE_DONE;
+      break;
+    }
+    if( i<p->nOp ){
+      /* The rowid is small enough that we are still in the
+      ** main program. */
+      aOp = p->aOp;
+    }else{
+      /* We are currently listing subprograms.  Figure out which one and
+      ** pick up the appropriate opcode. */
+      int j;
+      i -= p->nOp;
+      assert( apSub!=0 );
+      assert( nSub>0 );
+      for(j=0; i>=apSub[j]->nOp; j++){
+        i -= apSub[j]->nOp;
+        assert( i<apSub[j]->nOp || j+1<nSub );
+      }
+      aOp = apSub[j]->aOp;
+    }
+
+    /* When an OP_Program opcode is encounter (the only opcode that has
+    ** a P4_SUBPROGRAM argument), expand the size of the array of subprograms
+    ** kept in p->aMem[9].z to hold the new program - assuming this subprogram
+    ** has not already been seen.
+    */
+    if( pSub!=0 && aOp[i].p4type==P4_SUBPROGRAM ){
+      int nByte = (nSub+1)*sizeof(SubProgram*);
+      int j;
+      for(j=0; j<nSub; j++){
+        if( apSub[j]==aOp[i].p4.pProgram ) break;
+      }
+      if( j==nSub ){
+        p->rc = sqlite3VdbeMemGrow(pSub, nByte, nSub!=0);
+        if( p->rc!=SQLITE_OK ){
+          rc = SQLITE_ERROR;
+          break;
+        }
+        apSub = (SubProgram **)pSub->z;
+        apSub[nSub++] = aOp[i].p4.pProgram;
+        MemSetTypeFlag(pSub, MEM_Blob);
+        pSub->n = nSub*sizeof(SubProgram*);
+        nRow += aOp[i].p4.pProgram->nOp;
+      }
+    }
+    if( eMode==0 ) break;
+#ifdef SQLITE_ENABLE_BYTECODE_VTAB
+    if( eMode==2 ){
+      Op *pOp = aOp + i;
+      if( pOp->opcode==OP_OpenRead ) break;
+      if( pOp->opcode==OP_OpenWrite && (pOp->p5 & OPFLAG_P2ISREG)==0 ) break;
+      if( pOp->opcode==OP_ReopenIdx ) break;
+    }else
+#endif
+    {
+      assert( eMode==1 );
+      if( aOp[i].opcode==OP_Explain ) break;
+      if( aOp[i].opcode==OP_Init && iPc>1 ) break;
+    }
+  }
+  *piPc = iPc;
+  *piAddr = i;
+  *paOp = aOp;
+  return rc;
+}
+#endif /* SQLITE_ENABLE_BYTECODE_VTAB || !SQLITE_OMIT_EXPLAIN */
+
 
 /*
 ** Delete a VdbeFrame object and its contents. VdbeFrame objects are
@@ -82874,16 +84551,14 @@ SQLITE_PRIVATE void sqlite3VdbeFrameDelete(VdbeFrame *p){
 SQLITE_PRIVATE int sqlite3VdbeList(
   Vdbe *p                   /* The VDBE */
 ){
-  int nRow;                            /* Stop when row count reaches this */
-  int nSub = 0;                        /* Number of sub-vdbes seen so far */
-  SubProgram **apSub = 0;              /* Array of sub-vdbes */
   Mem *pSub = 0;                       /* Memory cell hold array of subprogs */
   sqlite3 *db = p->db;                 /* The database connection */
   int i;                               /* Loop counter */
   int rc = SQLITE_OK;                  /* Return code */
   Mem *pMem = &p->aMem[1];             /* First Mem of result set */
   int bListSubprogs = (p->explain==1 || (db->flags & SQLITE_TriggerEQP)!=0);
-  Op *pOp = 0;
+  Op *aOp;                             /* Array of opcodes */
+  Op *pOp;                             /* Current opcode */
 
   assert( p->explain );
   assert( p->magic==VDBE_MAGIC_RUN );
@@ -82903,14 +84578,6 @@ SQLITE_PRIVATE int sqlite3VdbeList(
     return SQLITE_ERROR;
   }
 
-  /* When the number of output rows reaches nRow, that means the
-  ** listing has finished and sqlite3_step() should return SQLITE_DONE.
-  ** nRow is the sum of the number of rows in the main program, plus
-  ** the sum of the number of rows in all trigger subprograms encountered
-  ** so far.  The nRow value will increase as new trigger subprograms are
-  ** encountered, but p->pc will eventually catch up to nRow.
-  */
-  nRow = p->nOp;
   if( bListSubprogs ){
     /* The first 8 memory cells are used for the result set.  So we will
     ** commandeer the 9th cell to use as storage for an array of pointers
@@ -82918,147 +84585,55 @@ SQLITE_PRIVATE int sqlite3VdbeList(
     ** cells.  */
     assert( p->nMem>9 );
     pSub = &p->aMem[9];
-    if( pSub->flags&MEM_Blob ){
-      /* On the first call to sqlite3_step(), pSub will hold a NULL.  It is
-      ** initialized to a BLOB by the P4_SUBPROGRAM processing logic below */
-      nSub = pSub->n/sizeof(Vdbe*);
-      apSub = (SubProgram **)pSub->z;
-    }
-    for(i=0; i<nSub; i++){
-      nRow += apSub[i]->nOp;
-    }
+  }else{
+    pSub = 0;
   }
 
-  while(1){  /* Loop exits via break */
-    i = p->pc++;
-    if( i>=nRow ){
-      p->rc = SQLITE_OK;
-      rc = SQLITE_DONE;
-      break;
-    }
-    if( i<p->nOp ){
-      /* The output line number is small enough that we are still in the
-      ** main program. */
-      pOp = &p->aOp[i];
-    }else{
-      /* We are currently listing subprograms.  Figure out which one and
-      ** pick up the appropriate opcode. */
-      int j;
-      i -= p->nOp;
-      assert( apSub!=0 );
-      assert( nSub>0 );
-      for(j=0; i>=apSub[j]->nOp; j++){
-        i -= apSub[j]->nOp;
-        assert( i<apSub[j]->nOp || j+1<nSub );
-      }
-      pOp = &apSub[j]->aOp[i];
-    }
-
-    /* When an OP_Program opcode is encounter (the only opcode that has
-    ** a P4_SUBPROGRAM argument), expand the size of the array of subprograms
-    ** kept in p->aMem[9].z to hold the new program - assuming this subprogram
-    ** has not already been seen.
-    */
-    if( bListSubprogs && pOp->p4type==P4_SUBPROGRAM ){
-      int nByte = (nSub+1)*sizeof(SubProgram*);
-      int j;
-      for(j=0; j<nSub; j++){
-        if( apSub[j]==pOp->p4.pProgram ) break;
-      }
-      if( j==nSub ){
-        p->rc = sqlite3VdbeMemGrow(pSub, nByte, nSub!=0);
-        if( p->rc!=SQLITE_OK ){
-          rc = SQLITE_ERROR;
-          break;
-        }
-        apSub = (SubProgram **)pSub->z;
-        apSub[nSub++] = pOp->p4.pProgram;
-        pSub->flags |= MEM_Blob;
-        pSub->n = nSub*sizeof(SubProgram*);
-        nRow += pOp->p4.pProgram->nOp;
-      }
-    }
-    if( p->explain<2 ) break;
-    if( pOp->opcode==OP_Explain ) break;
-    if( pOp->opcode==OP_Init && p->pc>1 ) break;
-  }
+  /* Figure out which opcode is next to display */
+  rc = sqlite3VdbeNextOpcode(p, pSub, p->explain==2, &p->pc, &i, &aOp);
 
   if( rc==SQLITE_OK ){
-    if( db->u1.isInterrupted ){
+    pOp = aOp + i;
+    if( AtomicLoad(&db->u1.isInterrupted) ){
       p->rc = SQLITE_INTERRUPT;
       rc = SQLITE_ERROR;
       sqlite3VdbeError(p, sqlite3ErrStr(p->rc));
     }else{
-      char *zP4;
-      if( p->explain==1 ){
-        pMem->flags = MEM_Int;
-        pMem->u.i = i;                                /* Program counter */
-        pMem++;
-
-        pMem->flags = MEM_Static|MEM_Str|MEM_Term;
-        pMem->z = (char*)sqlite3OpcodeName(pOp->opcode); /* Opcode */
-        assert( pMem->z!=0 );
-        pMem->n = sqlite3Strlen30(pMem->z);
-        pMem->enc = SQLITE_UTF8;
-        pMem++;
-      }
-
-      pMem->flags = MEM_Int;
-      pMem->u.i = pOp->p1;                          /* P1 */
-      pMem++;
-
-      pMem->flags = MEM_Int;
-      pMem->u.i = pOp->p2;                          /* P2 */
-      pMem++;
-
-      pMem->flags = MEM_Int;
-      pMem->u.i = pOp->p3;                          /* P3 */
-      pMem++;
-
-      if( sqlite3VdbeMemClearAndResize(pMem, 100) ){ /* P4 */
-        assert( p->db->mallocFailed );
-        return SQLITE_ERROR;
-      }
-      pMem->flags = MEM_Str|MEM_Term;
-      zP4 = displayP4(pOp, pMem->z, pMem->szMalloc);
-      if( zP4!=pMem->z ){
-        pMem->n = 0;
-        sqlite3VdbeMemSetStr(pMem, zP4, -1, SQLITE_UTF8, 0);
+      char *zP4 = sqlite3VdbeDisplayP4(db, pOp);
+      if( p->explain==2 ){
+        sqlite3VdbeMemSetInt64(pMem, pOp->p1);
+        sqlite3VdbeMemSetInt64(pMem+1, pOp->p2);
+        sqlite3VdbeMemSetInt64(pMem+2, pOp->p3);
+        sqlite3VdbeMemSetStr(pMem+3, zP4, -1, SQLITE_UTF8, sqlite3_free);
+        p->nResColumn = 4;
       }else{
-        assert( pMem->z!=0 );
-        pMem->n = sqlite3Strlen30(pMem->z);
-        pMem->enc = SQLITE_UTF8;
-      }
-      pMem++;
-
-      if( p->explain==1 ){
-        if( sqlite3VdbeMemClearAndResize(pMem, 4) ){
-          assert( p->db->mallocFailed );
-          return SQLITE_ERROR;
-        }
-        pMem->flags = MEM_Str|MEM_Term;
-        pMem->n = 2;
-        sqlite3_snprintf(3, pMem->z, "%.2x", pOp->p5);   /* P5 */
-        pMem->enc = SQLITE_UTF8;
-        pMem++;
-
+        sqlite3VdbeMemSetInt64(pMem+0, i);
+        sqlite3VdbeMemSetStr(pMem+1, (char*)sqlite3OpcodeName(pOp->opcode),
+                             -1, SQLITE_UTF8, SQLITE_STATIC);
+        sqlite3VdbeMemSetInt64(pMem+2, pOp->p1);
+        sqlite3VdbeMemSetInt64(pMem+3, pOp->p2);
+        sqlite3VdbeMemSetInt64(pMem+4, pOp->p3);
+        /* pMem+5 for p4 is done last */
+        sqlite3VdbeMemSetInt64(pMem+6, pOp->p5);
 #ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS
-        if( sqlite3VdbeMemClearAndResize(pMem, 500) ){
-          assert( p->db->mallocFailed );
-          return SQLITE_ERROR;
+        {
+          char *zCom = sqlite3VdbeDisplayComment(db, pOp, zP4);
+          sqlite3VdbeMemSetStr(pMem+7, zCom, -1, SQLITE_UTF8, sqlite3_free);
         }
-        pMem->flags = MEM_Str|MEM_Term;
-        pMem->n = displayComment(pOp, zP4, pMem->z, 500);
-        pMem->enc = SQLITE_UTF8;
 #else
-        pMem->flags = MEM_Null;                       /* Comment */
+        sqlite3VdbeMemSetNull(pMem+7);
 #endif
+        sqlite3VdbeMemSetStr(pMem+5, zP4, -1, SQLITE_UTF8, sqlite3_free);
+        p->nResColumn = 8;
+      }
+      p->pResultSet = pMem;
+      if( db->mallocFailed ){
+        p->rc = SQLITE_NOMEM;
+        rc = SQLITE_ERROR;
+      }else{
+        p->rc = SQLITE_OK;
+        rc = SQLITE_ROW;
       }
-
-      p->nResColumn = 8 - 4*(p->explain-1);
-      p->pResultSet = &p->aMem[1];
-      p->rc = SQLITE_OK;
-      rc = SQLITE_ROW;
     }
   }
   return rc;
@@ -83259,8 +84834,27 @@ SQLITE_PRIVATE void sqlite3VdbeMakeReady(
 
   resolveP2Values(p, &nArg);
   p->usesStmtJournal = (u8)(pParse->isMultiWrite && pParse->mayAbort);
-  if( pParse->explain && nMem<10 ){
-    nMem = 10;
+  if( pParse->explain ){
+    static const char * const azColName[] = {
+       "addr", "opcode", "p1", "p2", "p3", "p4", "p5", "comment",
+       "id", "parent", "notused", "detail"
+    };
+    int iFirst, mx, i;
+    if( nMem<10 ) nMem = 10;
+    p->explain = pParse->explain;
+    if( pParse->explain==2 ){
+      sqlite3VdbeSetNumCols(p, 4);
+      iFirst = 8;
+      mx = 12;
+    }else{
+      sqlite3VdbeSetNumCols(p, 8);
+      iFirst = 0;
+      mx = 8;
+    }
+    for(i=iFirst; i<mx; i++){
+      sqlite3VdbeSetColName(p, i-iFirst, COLNAME_NAME,
+                            azColName[i], SQLITE_STATIC);
+    }
   }
   p->expired = 0;
 
@@ -83298,7 +84892,6 @@ SQLITE_PRIVATE void sqlite3VdbeMakeReady(
 
   p->pVList = pParse->pVList;
   pParse->pVList =  0;
-  p->explain = pParse->explain;
   if( db->mallocFailed ){
     p->nVar = 0;
     p->nCursor = 0;
@@ -83486,13 +85079,13 @@ SQLITE_PRIVATE int sqlite3VdbeSetColName(
 ** A read or write transaction may or may not be active on database handle
 ** db. If a transaction is active, commit it. If there is a
 ** write-transaction spanning more than one database file, this routine
-** takes care of the master journal trickery.
+** takes care of the super-journal trickery.
 */
 static int vdbeCommit(sqlite3 *db, Vdbe *p){
   int i;
   int nTrans = 0;  /* Number of databases with an active write-transaction
                    ** that are candidates for a two-phase commit using a
-                   ** master-journal */
+                   ** super-journal */
   int rc = SQLITE_OK;
   int needXcommit = 0;
 
@@ -83505,7 +85098,7 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){
 
   /* Before doing anything else, call the xSync() callback for any
   ** virtual module tables written in this transaction. This has to
-  ** be done before determining whether a master journal file is
+  ** be done before determining whether a super-journal file is
   ** required, as an xSync() callback may add an attached database
   ** to the transaction.
   */
@@ -83514,15 +85107,15 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){
   /* This loop determines (a) if the commit hook should be invoked and
   ** (b) how many database files have open write transactions, not
   ** including the temp database. (b) is important because if more than
-  ** one database file has an open write transaction, a master journal
+  ** one database file has an open write transaction, a super-journal
   ** file is required for an atomic commit.
   */
   for(i=0; rc==SQLITE_OK && i<db->nDb; i++){
     Btree *pBt = db->aDb[i].pBt;
     if( sqlite3BtreeIsInTrans(pBt) ){
-      /* Whether or not a database might need a master journal depends upon
+      /* Whether or not a database might need a super-journal depends upon
       ** its journal mode (among other things).  This matrix determines which
-      ** journal modes use a master journal and which do not */
+      ** journal modes use a super-journal and which do not */
       static const u8 aMJNeeded[] = {
         /* DELETE   */  1,
         /* PERSIST   */ 1,
@@ -83560,7 +85153,7 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){
 
   /* The simple case - no more than one database file (not counting the
   ** TEMP database) has a transaction active.   There is no need for the
-  ** master-journal.
+  ** super-journal.
   **
   ** If the return value of sqlite3BtreeGetFilename() is a zero length
   ** string, it means the main database is :memory: or a temp file.  In
@@ -83594,61 +85187,62 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){
   }
 
   /* The complex case - There is a multi-file write-transaction active.
-  ** This requires a master journal file to ensure the transaction is
+  ** This requires a super-journal file to ensure the transaction is
   ** committed atomically.
   */
 #ifndef SQLITE_OMIT_DISKIO
   else{
     sqlite3_vfs *pVfs = db->pVfs;
-    char *zMaster = 0;   /* File-name for the master journal */
+    char *zSuper = 0;   /* File-name for the super-journal */
     char const *zMainFile = sqlite3BtreeGetFilename(db->aDb[0].pBt);
-    sqlite3_file *pMaster = 0;
+    sqlite3_file *pSuperJrnl = 0;
     i64 offset = 0;
     int res;
     int retryCount = 0;
     int nMainFile;
 
-    /* Select a master journal file name */
+    /* Select a super-journal file name */
     nMainFile = sqlite3Strlen30(zMainFile);
-    zMaster = sqlite3MPrintf(db, "%s-mjXXXXXX9XXz", zMainFile);
-    if( zMaster==0 ) return SQLITE_NOMEM_BKPT;
+    zSuper = sqlite3MPrintf(db, "%.4c%s%.16c", 0,zMainFile,0);
+    if( zSuper==0 ) return SQLITE_NOMEM_BKPT;
+    zSuper += 4;
     do {
       u32 iRandom;
       if( retryCount ){
         if( retryCount>100 ){
-          sqlite3_log(SQLITE_FULL, "MJ delete: %s", zMaster);
-          sqlite3OsDelete(pVfs, zMaster, 0);
+          sqlite3_log(SQLITE_FULL, "MJ delete: %s", zSuper);
+          sqlite3OsDelete(pVfs, zSuper, 0);
           break;
         }else if( retryCount==1 ){
-          sqlite3_log(SQLITE_FULL, "MJ collide: %s", zMaster);
+          sqlite3_log(SQLITE_FULL, "MJ collide: %s", zSuper);
         }
       }
       retryCount++;
       sqlite3_randomness(sizeof(iRandom), &iRandom);
-      sqlite3_snprintf(13, &zMaster[nMainFile], "-mj%06X9%02X",
+      sqlite3_snprintf(13, &zSuper[nMainFile], "-mj%06X9%02X",
                                (iRandom>>8)&0xffffff, iRandom&0xff);
-      /* The antipenultimate character of the master journal name must
+      /* The antipenultimate character of the super-journal name must
       ** be "9" to avoid name collisions when using 8+3 filenames. */
-      assert( zMaster[sqlite3Strlen30(zMaster)-3]=='9' );
-      sqlite3FileSuffix3(zMainFile, zMaster);
-      rc = sqlite3OsAccess(pVfs, zMaster, SQLITE_ACCESS_EXISTS, &res);
+      assert( zSuper[sqlite3Strlen30(zSuper)-3]=='9' );
+      sqlite3FileSuffix3(zMainFile, zSuper);
+      rc = sqlite3OsAccess(pVfs, zSuper, SQLITE_ACCESS_EXISTS, &res);
     }while( rc==SQLITE_OK && res );
     if( rc==SQLITE_OK ){
-      /* Open the master journal. */
-      rc = sqlite3OsOpenMalloc(pVfs, zMaster, &pMaster,
+      /* Open the super-journal. */
+      rc = sqlite3OsOpenMalloc(pVfs, zSuper, &pSuperJrnl,
           SQLITE_OPEN_READWRITE|SQLITE_OPEN_CREATE|
-          SQLITE_OPEN_EXCLUSIVE|SQLITE_OPEN_MASTER_JOURNAL, 0
+          SQLITE_OPEN_EXCLUSIVE|SQLITE_OPEN_SUPER_JOURNAL, 0
       );
     }
     if( rc!=SQLITE_OK ){
-      sqlite3DbFree(db, zMaster);
+      sqlite3DbFree(db, zSuper-4);
       return rc;
     }
 
     /* Write the name of each database file in the transaction into the new
-    ** master journal file. If an error occurs at this point close
-    ** and delete the master journal file. All the individual journal files
-    ** still have 'null' as the master journal pointer, so they will roll
+    ** super-journal file. If an error occurs at this point close
+    ** and delete the super-journal file. All the individual journal files
+    ** still have 'null' as the super-journal pointer, so they will roll
     ** back independently if a failure occurs.
     */
     for(i=0; i<db->nDb; i++){
@@ -83659,59 +85253,59 @@ static int vdbeCommit(sqlite3 *db, Vdbe *p){
           continue;  /* Ignore TEMP and :memory: databases */
         }
         assert( zFile[0]!=0 );
-        rc = sqlite3OsWrite(pMaster, zFile, sqlite3Strlen30(zFile)+1, offset);
+        rc = sqlite3OsWrite(pSuperJrnl, zFile, sqlite3Strlen30(zFile)+1,offset);
         offset += sqlite3Strlen30(zFile)+1;
         if( rc!=SQLITE_OK ){
-          sqlite3OsCloseFree(pMaster);
-          sqlite3OsDelete(pVfs, zMaster, 0);
-          sqlite3DbFree(db, zMaster);
+          sqlite3OsCloseFree(pSuperJrnl);
+          sqlite3OsDelete(pVfs, zSuper, 0);
+          sqlite3DbFree(db, zSuper-4);
           return rc;
         }
       }
     }
 
-    /* Sync the master journal file. If the IOCAP_SEQUENTIAL device
+    /* Sync the super-journal file. If the IOCAP_SEQUENTIAL device
     ** flag is set this is not required.
     */
-    if( 0==(sqlite3OsDeviceCharacteristics(pMaster)&SQLITE_IOCAP_SEQUENTIAL)
-     && SQLITE_OK!=(rc = sqlite3OsSync(pMaster, SQLITE_SYNC_NORMAL))
+    if( 0==(sqlite3OsDeviceCharacteristics(pSuperJrnl)&SQLITE_IOCAP_SEQUENTIAL)
+     && SQLITE_OK!=(rc = sqlite3OsSync(pSuperJrnl, SQLITE_SYNC_NORMAL))
     ){
-      sqlite3OsCloseFree(pMaster);
-      sqlite3OsDelete(pVfs, zMaster, 0);
-      sqlite3DbFree(db, zMaster);
+      sqlite3OsCloseFree(pSuperJrnl);
+      sqlite3OsDelete(pVfs, zSuper, 0);
+      sqlite3DbFree(db, zSuper-4);
       return rc;
     }
 
     /* Sync all the db files involved in the transaction. The same call
-    ** sets the master journal pointer in each individual journal. If
-    ** an error occurs here, do not delete the master journal file.
+    ** sets the super-journal pointer in each individual journal. If
+    ** an error occurs here, do not delete the super-journal file.
     **
     ** If the error occurs during the first call to
     ** sqlite3BtreeCommitPhaseOne(), then there is a chance that the
-    ** master journal file will be orphaned. But we cannot delete it,
-    ** in case the master journal file name was written into the journal
+    ** super-journal file will be orphaned. But we cannot delete it,
+    ** in case the super-journal file name was written into the journal
     ** file before the failure occurred.
     */
     for(i=0; rc==SQLITE_OK && i<db->nDb; i++){
       Btree *pBt = db->aDb[i].pBt;
       if( pBt ){
-        rc = sqlite3BtreeCommitPhaseOne(pBt, zMaster);
+        rc = sqlite3BtreeCommitPhaseOne(pBt, zSuper);
       }
     }
-    sqlite3OsCloseFree(pMaster);
+    sqlite3OsCloseFree(pSuperJrnl);
     assert( rc!=SQLITE_BUSY );
     if( rc!=SQLITE_OK ){
-      sqlite3DbFree(db, zMaster);
+      sqlite3DbFree(db, zSuper-4);
       return rc;
     }
 
-    /* Delete the master journal file. This commits the transaction. After
+    /* Delete the super-journal file. This commits the transaction. After
     ** doing this the directory is synced again before any individual
     ** transaction files are deleted.
     */
-    rc = sqlite3OsDelete(pVfs, zMaster, 1);
-    sqlite3DbFree(db, zMaster);
-    zMaster = 0;
+    rc = sqlite3OsDelete(pVfs, zSuper, 1);
+    sqlite3DbFree(db, zSuper-4);
+    zSuper = 0;
     if( rc ){
       return rc;
     }
@@ -84158,7 +85752,11 @@ SQLITE_PRIVATE int sqlite3VdbeReset(Vdbe *p){
   */
   if( p->pc>=0 ){
     vdbeInvokeSqllog(p);
-    sqlite3VdbeTransferError(p);
+    if( db->pErr || p->zErrMsg ){
+      sqlite3VdbeTransferError(p);
+    }else{
+      db->errCode = p->rc;
+    }
     if( p->runOnlyOnce ) p->expired = 1;
   }else if( p->rc && p->expired ){
     /* The expired flag was set on the VDBE before the first call
@@ -84178,8 +85776,10 @@ SQLITE_PRIVATE int sqlite3VdbeReset(Vdbe *p){
     for(i=0; i<p->nMem; i++) assert( p->aMem[i].flags==MEM_Undefined );
   }
 #endif
-  sqlite3DbFree(db, p->zErrMsg);
-  p->zErrMsg = 0;
+  if( p->zErrMsg ){
+    sqlite3DbFree(db, p->zErrMsg);
+    p->zErrMsg = 0;
+  }
   p->pResultSet = 0;
 #ifdef SQLITE_DEBUG
   p->nWrite = 0;
@@ -84349,7 +85949,7 @@ SQLITE_PRIVATE void sqlite3VdbeDelete(Vdbe *p){
 ** carried out.  Seek the cursor now.  If an error occurs, return
 ** the appropriate error code.
 */
-static int SQLITE_NOINLINE handleDeferredMoveto(VdbeCursor *p){
+SQLITE_PRIVATE int SQLITE_NOINLINE sqlite3VdbeFinishMoveto(VdbeCursor *p){
   int res, rc;
 #ifdef SQLITE_TEST
   extern int sqlite3_search_count;
@@ -84411,17 +86011,17 @@ SQLITE_PRIVATE int sqlite3VdbeCursorRestore(VdbeCursor *p){
 ** If the cursor is already pointing to the correct row and that row has
 ** not been deleted out from under the cursor, then this routine is a no-op.
 */
-SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor **pp, int *piCol){
+SQLITE_PRIVATE int sqlite3VdbeCursorMoveto(VdbeCursor **pp, u32 *piCol){
   VdbeCursor *p = *pp;
   assert( p->eCurType==CURTYPE_BTREE || p->eCurType==CURTYPE_PSEUDO );
   if( p->deferredMoveto ){
-    int iMap;
-    if( p->aAltMap && (iMap = p->aAltMap[1+*piCol])>0 ){
+    u32 iMap;
+    if( p->aAltMap && (iMap = p->aAltMap[1+*piCol])>0 && !p->nullRow ){
       *pp = p->pAltCursor;
       *piCol = iMap - 1;
       return SQLITE_OK;
     }
-    return handleDeferredMoveto(p);
+    return sqlite3VdbeFinishMoveto(p);
   }
   if( sqlite3BtreeCursorHasMoved(p->uc.pCursor) ){
     return handleMovedCursor(p);
@@ -85419,7 +87019,7 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip(
 
     /* RHS is a string */
     else if( pRhs->flags & MEM_Str ){
-      getVarint32(&aKey1[idx1], serial_type);
+      getVarint32NR(&aKey1[idx1], serial_type);
       testcase( serial_type==12 );
       if( serial_type<12 ){
         rc = -1;
@@ -85453,7 +87053,7 @@ SQLITE_PRIVATE int sqlite3VdbeRecordCompareWithSkip(
     /* RHS is a blob */
     else if( pRhs->flags & MEM_Blob ){
       assert( (pRhs->flags & MEM_Zero)==0 || pRhs->n==0 );
-      getVarint32(&aKey1[idx1], serial_type);
+      getVarint32NR(&aKey1[idx1], serial_type);
       testcase( serial_type==12 );
       if( serial_type<12 || (serial_type & 0x01) ){
         rc = -1;
@@ -85642,7 +87242,10 @@ static int vdbeRecordCompareString(
 
   assert( pPKey2->aMem[0].flags & MEM_Str );
   vdbeAssertFieldCountWithinLimits(nKey1, pKey1, pPKey2->pKeyInfo);
-  getVarint32(&aKey1[1], serial_type);
+  serial_type = (u8)(aKey1[1]);
+  if( serial_type >= 0x80 ){
+    sqlite3GetVarint32(&aKey1[1], (u32*)&serial_type);
+  }
   if( serial_type<12 ){
     res = pPKey2->r1;      /* (pKey1/nKey1) is a number or a null */
   }else if( !(serial_type & 0x01) ){
@@ -85763,13 +87366,13 @@ SQLITE_PRIVATE int sqlite3VdbeIdxRowid(sqlite3 *db, BtCursor *pCur, i64 *rowid){
 
   /* Read in the complete content of the index entry */
   sqlite3VdbeMemInit(&m, db, 0);
-  rc = sqlite3VdbeMemFromBtree(pCur, 0, (u32)nCellKey, &m);
+  rc = sqlite3VdbeMemFromBtreeZeroOffset(pCur, (u32)nCellKey, &m);
   if( rc ){
     return rc;
   }
 
   /* The index entry must begin with a header size */
-  (void)getVarint32((u8*)m.z, szHdr);
+  getVarint32NR((u8*)m.z, szHdr);
   testcase( szHdr==3 );
   testcase( szHdr==m.n );
   testcase( szHdr>0x7fffffff );
@@ -85780,7 +87383,7 @@ SQLITE_PRIVATE int sqlite3VdbeIdxRowid(sqlite3 *db, BtCursor *pCur, i64 *rowid){
 
   /* The last field of the index should be an integer - the ROWID.
   ** Verify that the last entry really is an integer. */
-  (void)getVarint32((u8*)&m.z[szHdr-1], typeRowid);
+  getVarint32NR((u8*)&m.z[szHdr-1], typeRowid);
   testcase( typeRowid==1 );
   testcase( typeRowid==2 );
   testcase( typeRowid==3 );
@@ -85845,7 +87448,7 @@ SQLITE_PRIVATE int sqlite3VdbeIdxKeyCompare(
     return SQLITE_CORRUPT_BKPT;
   }
   sqlite3VdbeMemInit(&m, db, 0);
-  rc = sqlite3VdbeMemFromBtree(pCur, 0, (u32)nCellKey, &m);
+  rc = sqlite3VdbeMemFromBtreeZeroOffset(pCur, (u32)nCellKey, &m);
   if( rc ){
     return rc;
   }
@@ -85961,13 +87564,25 @@ SQLITE_PRIVATE void sqlite3VdbeSetVarmask(Vdbe *v, int iVar){
 ** features such as 'now'.
 */
 SQLITE_PRIVATE int sqlite3NotPureFunc(sqlite3_context *pCtx){
+  const VdbeOp *pOp;
 #ifdef SQLITE_ENABLE_STAT4
   if( pCtx->pVdbe==0 ) return 1;
 #endif
-  if( pCtx->pVdbe->aOp[pCtx->iOp].opcode==OP_PureFunc ){
-    sqlite3_result_error(pCtx,
-       "non-deterministic function in index expression or CHECK constraint",
-       -1);
+  pOp = pCtx->pVdbe->aOp + pCtx->iOp;
+  if( pOp->opcode==OP_PureFunc ){
+    const char *zContext;
+    char *zMsg;
+    if( pOp->p5 & NC_IsCheck ){
+      zContext = "a CHECK constraint";
+    }else if( pOp->p5 & NC_GenCol ){
+      zContext = "a generated column";
+    }else{
+      zContext = "an index";
+    }
+    zMsg = sqlite3_mprintf("non-deterministic use of %s() in %s",
+                           pCtx->pFunc->zName, zContext);
+    sqlite3_result_error(pCtx, zMsg, -1);
+    sqlite3_free(zMsg);
     return 0;
   }
   return 1;
@@ -86156,7 +87771,7 @@ static SQLITE_NOINLINE void invokeProfileCallback(sqlite3 *db, Vdbe *p){
   }
 #endif
   if( db->mTrace & SQLITE_TRACE_PROFILE ){
-    db->xTrace(SQLITE_TRACE_PROFILE, db->pTraceArg, p, (void*)&iElapse);
+    db->trace.xV2(SQLITE_TRACE_PROFILE, db->pTraceArg, p, (void*)&iElapse);
   }
   p->startTime = 0;
 }
@@ -86738,6 +88353,13 @@ static int sqlite3Step(Vdbe *p){
   if( p->pc<0 && p->expired ){
     p->rc = SQLITE_SCHEMA;
     rc = SQLITE_ERROR;
+    if( (p->prepFlags & SQLITE_PREPARE_SAVESQL)!=0 ){
+      /* If this statement was prepared using saved SQL and an
+      ** error has occurred, then return the error code in p->rc to the
+      ** caller. Set the error code in the database handle to the same value.
+      */
+      rc = sqlite3VdbeTransferError(p);
+    }
     goto end_of_step;
   }
   if( p->pc<0 ){
@@ -86746,7 +88368,7 @@ static int sqlite3Step(Vdbe *p){
     ** from interrupting a statement that has not yet started.
     */
     if( db->nVdbeActive==0 ){
-      db->u1.isInterrupted = 0;
+      AtomicStore(&db->u1.isInterrupted, 0);
     }
 
     assert( db->nVdbeWrite>0 || db->autoCommit==0
@@ -86793,35 +88415,27 @@ static int sqlite3Step(Vdbe *p){
       if( p->rc!=SQLITE_OK ){
         rc = SQLITE_ERROR;
       }
+    }else if( rc!=SQLITE_DONE && (p->prepFlags & SQLITE_PREPARE_SAVESQL)!=0 ){
+      /* If this statement was prepared using saved SQL and an
+      ** error has occurred, then return the error code in p->rc to the
+      ** caller. Set the error code in the database handle to the same value.
+      */
+      rc = sqlite3VdbeTransferError(p);
     }
   }
 
   db->errCode = rc;
   if( SQLITE_NOMEM==sqlite3ApiExit(p->db, p->rc) ){
     p->rc = SQLITE_NOMEM_BKPT;
+    if( (p->prepFlags & SQLITE_PREPARE_SAVESQL)!=0 ) rc = p->rc;
   }
 end_of_step:
-  /* At this point local variable rc holds the value that should be
-  ** returned if this statement was compiled using the legacy
-  ** sqlite3_prepare() interface. According to the docs, this can only
-  ** be one of the values in the first assert() below. Variable p->rc
-  ** contains the value that would be returned if sqlite3_finalize()
-  ** were called on statement p.
-  */
-  assert( rc==SQLITE_ROW  || rc==SQLITE_DONE   || rc==SQLITE_ERROR
+  /* There are only a limited number of result codes allowed from the
+  ** statements prepared using the legacy sqlite3_prepare() interface */
+  assert( (p->prepFlags & SQLITE_PREPARE_SAVESQL)!=0
+       || rc==SQLITE_ROW  || rc==SQLITE_DONE   || rc==SQLITE_ERROR
        || (rc&0xff)==SQLITE_BUSY || rc==SQLITE_MISUSE
   );
-  assert( (p->rc!=SQLITE_ROW && p->rc!=SQLITE_DONE) || p->rc==p->rcApp );
-  if( rc!=SQLITE_ROW
-   && rc!=SQLITE_DONE
-   && (p->prepFlags & SQLITE_PREPARE_SAVESQL)!=0
-  ){
-    /* If this statement was prepared using saved SQL and an
-    ** error has occurred, then return the error code in p->rc to the
-    ** caller. Set the error code in the database handle to the same value.
-    */
-    rc = sqlite3VdbeTransferError(p);
-  }
   return (rc&db->errMask);
 }
 
@@ -87438,7 +89052,7 @@ static int vdbeUnbind(Vdbe *p, int i){
   /* If the bit corresponding to this variable in Vdbe.expmask is set, then
   ** binding a new value to this variable invalidates the current query plan.
   **
-  ** IMPLEMENTATION-OF: R-48440-37595 If the specific value bound to host
+  ** IMPLEMENTATION-OF: R-57496-20354 If the specific value bound to a host
   ** parameter in the WHERE clause might influence the choice of query plan
   ** for a statement, then the statement will be automatically recompiled,
   ** as if there had been a schema change, on the first sqlite3_step() call
@@ -87914,7 +89528,7 @@ SQLITE_API int sqlite3_preupdate_old(sqlite3 *db, int iIdx, sqlite3_value **ppVa
     goto preupdate_old_out;
   }
   if( p->pPk ){
-    iIdx = sqlite3ColumnOfIndex(p->pPk, iIdx);
+    iIdx = sqlite3TableColumnToIndex(p->pPk, iIdx);
   }
   if( iIdx>=p->pCsr->nField || iIdx<0 ){
     rc = SQLITE_RANGE;
@@ -88004,7 +89618,7 @@ SQLITE_API int sqlite3_preupdate_new(sqlite3 *db, int iIdx, sqlite3_value **ppVa
     goto preupdate_new_out;
   }
   if( p->pPk && p->op!=SQLITE_UPDATE ){
-    iIdx = sqlite3ColumnOfIndex(p->pPk, iIdx);
+    iIdx = sqlite3TableColumnToIndex(p->pPk, iIdx);
   }
   if( iIdx>=p->pCsr->nField || iIdx<0 ){
     rc = SQLITE_RANGE;
@@ -88452,6 +90066,26 @@ SQLITE_API int sqlite3_found_count = 0;
 # define UPDATE_MAX_BLOBSIZE(P)
 #endif
 
+#ifdef SQLITE_DEBUG
+/* This routine provides a convenient place to set a breakpoint during
+** tracing with PRAGMA vdbe_trace=on.  The breakpoint fires right after
+** each opcode is printed.  Variables "pc" (program counter) and pOp are
+** available to add conditionals to the breakpoint.  GDB example:
+**
+**         break test_trace_breakpoint if pc=22
+**
+** Other useful labels for breakpoints include:
+**   test_addop_breakpoint(pc,pOp)
+**   sqlite3CorruptError(lineno)
+**   sqlite3MisuseError(lineno)
+**   sqlite3CantopenError(lineno)
+*/
+static void test_trace_breakpoint(int pc, Op *pOp, Vdbe *v){
+  static int n = 0;
+  n++;
+}
+#endif
+
 /*
 ** Invoke the VDBE coverage callback, if that callback is defined.  This
 ** feature is used for test suite validation only and does not appear an
@@ -88796,12 +90430,9 @@ static u16 numericType(Mem *pMem){
 ** Write a nice string representation of the contents of cell pMem
 ** into buffer zBuf, length nBuf.
 */
-SQLITE_PRIVATE void sqlite3VdbeMemPrettyPrint(Mem *pMem, char *zBuf){
-  char *zCsr = zBuf;
+SQLITE_PRIVATE void sqlite3VdbeMemPrettyPrint(Mem *pMem, StrAccum *pStr){
   int f = pMem->flags;
-
   static const char *const encnames[] = {"(X)", "(8)", "(16LE)", "(16BE)"};
-
   if( f&MEM_Blob ){
     int i;
     char c;
@@ -88817,57 +90448,40 @@ SQLITE_PRIVATE void sqlite3VdbeMemPrettyPrint(Mem *pMem, char *zBuf){
     }else{
       c = 's';
     }
-    *(zCsr++) = c;
-    *(zCsr++) = 'x';
-    sqlite3_snprintf(100, zCsr, "%d[", pMem->n);
-    zCsr += sqlite3Strlen30(zCsr);
+    sqlite3_str_appendf(pStr, "%cx[", c);
     for(i=0; i<25 && i<pMem->n; i++){
-      sqlite3_snprintf(100, zCsr, "%02X", ((int)pMem->z[i] & 0xFF));
-      zCsr += sqlite3Strlen30(zCsr);
+      sqlite3_str_appendf(pStr, "%02X", ((int)pMem->z[i] & 0xFF));
     }
-    *zCsr++ = '|';
+    sqlite3_str_appendf(pStr, "|");
     for(i=0; i<25 && i<pMem->n; i++){
       char z = pMem->z[i];
-      if( z<32 || z>126 ) *zCsr++ = '.';
-      else *zCsr++ = z;
+      sqlite3_str_appendchar(pStr, 1, (z<32||z>126)?'.':z);
     }
-    *(zCsr++) = ']';
+    sqlite3_str_appendf(pStr,"]");
     if( f & MEM_Zero ){
-      sqlite3_snprintf(100, zCsr,"+%dz",pMem->u.nZero);
-      zCsr += sqlite3Strlen30(zCsr);
+      sqlite3_str_appendf(pStr, "+%dz",pMem->u.nZero);
     }
-    *zCsr = '\0';
   }else if( f & MEM_Str ){
-    int j, k;
-    zBuf[0] = ' ';
+    int j;
+    u8 c;
     if( f & MEM_Dyn ){
-      zBuf[1] = 'z';
+      c = 'z';
       assert( (f & (MEM_Static|MEM_Ephem))==0 );
     }else if( f & MEM_Static ){
-      zBuf[1] = 't';
+      c = 't';
       assert( (f & (MEM_Dyn|MEM_Ephem))==0 );
     }else if( f & MEM_Ephem ){
-      zBuf[1] = 'e';
+      c = 'e';
       assert( (f & (MEM_Static|MEM_Dyn))==0 );
     }else{
-      zBuf[1] = 's';
+      c = 's';
     }
-    k = 2;
-    sqlite3_snprintf(100, &zBuf[k], "%d", pMem->n);
-    k += sqlite3Strlen30(&zBuf[k]);
-    zBuf[k++] = '[';
+    sqlite3_str_appendf(pStr, " %c%d[", c, pMem->n);
     for(j=0; j<25 && j<pMem->n; j++){
-      u8 c = pMem->z[j];
-      if( c>=0x20 && c<0x7f ){
-        zBuf[k++] = c;
-      }else{
-        zBuf[k++] = '.';
-      }
+      c = pMem->z[j];
+      sqlite3_str_appendchar(pStr, 1, (c>=0x20&&c<=0x7f) ? c : '.');
     }
-    zBuf[k++] = ']';
-    sqlite3_snprintf(100,&zBuf[k], encnames[pMem->enc]);
-    k += sqlite3Strlen30(&zBuf[k]);
-    zBuf[k++] = 0;
+    sqlite3_str_appendf(pStr, "]%s", encnames[pMem->enc]);
   }
 }
 #endif
@@ -88894,21 +90508,38 @@ static void memTracePrint(Mem *p){
   }else if( sqlite3VdbeMemIsRowSet(p) ){
     printf(" (rowset)");
   }else{
-    char zBuf[200];
-    sqlite3VdbeMemPrettyPrint(p, zBuf);
-    printf(" %s", zBuf);
+    StrAccum acc;
+    char zBuf[1000];
+    sqlite3StrAccumInit(&acc, 0, zBuf, sizeof(zBuf), 0);
+    sqlite3VdbeMemPrettyPrint(p, &acc);
+    printf(" %s", sqlite3StrAccumFinish(&acc));
   }
   if( p->flags & MEM_Subtype ) printf(" subtype=0x%02x", p->eSubtype);
 }
 static void registerTrace(int iReg, Mem *p){
-  printf("REG[%d] = ", iReg);
+  printf("R[%d] = ", iReg);
   memTracePrint(p);
+  if( p->pScopyFrom ){
+    printf(" <== R[%d]", (int)(p->pScopyFrom - &p[-iReg]));
+  }
   printf("\n");
   sqlite3VdbeCheckMemInvariants(p);
 }
 #endif
 
 #ifdef SQLITE_DEBUG
+/*
+** Show the values of all registers in the virtual machine.  Used for
+** interactive debugging.
+*/
+SQLITE_PRIVATE void sqlite3VdbeRegisterDump(Vdbe *v){
+  int i;
+  for(i=1; i<v->nMem; i++) registerTrace(i, v->aMem+i);
+}
+#endif /* SQLITE_DEBUG */
+
+
+#ifdef SQLITE_DEBUG
 #  define REGISTER_TRACE(R,M) if(db->flags&SQLITE_VdbeTrace)registerTrace(R,M)
 #else
 #  define REGISTER_TRACE(R,M)
@@ -88936,7 +90567,7 @@ static void registerTrace(int iReg, Mem *p){
 ******************************************************************************
 **
 ** This file contains inline asm code for retrieving "high-performance"
-** counters for x86 class CPUs.
+** counters for x86 and x86_64 class CPUs.
 */
 #ifndef SQLITE_HWTIME_H
 #define SQLITE_HWTIME_H
@@ -88947,8 +90578,9 @@ static void registerTrace(int iReg, Mem *p){
 ** processor and returns that value.  This can be used for high-res
 ** profiling.
 */
-#if (defined(__GNUC__) || defined(_MSC_VER)) && \
-      (defined(i386) || defined(__i386__) || defined(_M_IX86))
+#if !defined(__STRICT_ANSI__) && \
+    (defined(__GNUC__) || defined(_MSC_VER)) && \
+    (defined(i386) || defined(__i386__) || defined(_M_IX86))
 
   #if defined(__GNUC__)
 
@@ -88969,7 +90601,7 @@ static void registerTrace(int iReg, Mem *p){
 
   #endif
 
-#elif (defined(__GNUC__) && defined(__x86_64__))
+#elif !defined(__STRICT_ANSI__) && (defined(__GNUC__) && defined(__x86_64__))
 
   __inline__ sqlite_uint64 sqlite3Hwtime(void){
       unsigned long val;
@@ -88977,7 +90609,7 @@ static void registerTrace(int iReg, Mem *p){
       return val;
   }
 
-#elif (defined(__GNUC__) && defined(__ppc__))
+#elif !defined(__STRICT_ANSI__) && (defined(__GNUC__) && defined(__ppc__))
 
   __inline__ sqlite_uint64 sqlite3Hwtime(void){
       unsigned long long retval;
@@ -88994,14 +90626,13 @@ static void registerTrace(int iReg, Mem *p){
 
 #else
 
-  #error Need implementation of sqlite3Hwtime() for your platform.
-
   /*
-  ** To compile without implementing sqlite3Hwtime() for your platform,
-  ** you can remove the above #error and use the following
-  ** stub function.  You will lose timing support for many
-  ** of the debugging and testing utilities, but it should at
-  ** least compile and run.
+  ** asm() is needed for hardware timing support.  Without asm(),
+  ** disable the sqlite3Hwtime() routine.
+  **
+  ** sqlite3Hwtime() is only used for some obscure debugging
+  ** and analysis configurations, not in any deliverable, so this
+  ** should not be a great loss.
   */
 SQLITE_PRIVATE   sqlite_uint64 sqlite3Hwtime(void){ return ((sqlite_uint64)0); }
 
@@ -89078,9 +90709,9 @@ SQLITE_PRIVATE int sqlite3VdbeExec(
   u8 resetSchemaOnFault = 0; /* Reset schema after an error if positive */
   u8 encoding = ENC(db);     /* The database encoding */
   int iCompare = 0;          /* Result of last comparison */
-  unsigned nVmStep = 0;      /* Number of virtual machine steps */
+  u64 nVmStep = 0;           /* Number of virtual machine steps */
 #ifndef SQLITE_OMIT_PROGRESS_CALLBACK
-  unsigned nProgressLimit;   /* Invoke xProgress() when nVmStep reaches this */
+  u64 nProgressLimit;        /* Invoke xProgress() when nVmStep reaches this */
 #endif
   Mem *aMem = p->aMem;       /* Copy of p->aMem */
   Mem *pIn1 = 0;             /* 1st input operand */
@@ -89100,7 +90731,7 @@ SQLITE_PRIVATE int sqlite3VdbeExec(
     assert( 0 < db->nProgressOps );
     nProgressLimit = db->nProgressOps - (iPrior % db->nProgressOps);
   }else{
-    nProgressLimit = 0xffffffff;
+    nProgressLimit = LARGEST_UINT64;
   }
 #endif
   if( p->rc==SQLITE_NOMEM ){
@@ -89109,12 +90740,14 @@ SQLITE_PRIVATE int sqlite3VdbeExec(
     goto no_mem;
   }
   assert( p->rc==SQLITE_OK || (p->rc&0xff)==SQLITE_BUSY );
+  testcase( p->rc!=SQLITE_OK );
+  p->rc = SQLITE_OK;
   assert( p->bIsReader || p->readOnly!=0 );
   p->iCurrentTime = 0;
   assert( p->explain==0 );
   p->pResultSet = 0;
   db->busyHandler.nBusy = 0;
-  if( db->u1.isInterrupted ) goto abort_due_to_interrupt;
+  if( AtomicLoad(&db->u1.isInterrupted) ) goto abort_due_to_interrupt;
   sqlite3VdbeIOTraceSql(p);
 #ifdef SQLITE_DEBUG
   sqlite3BeginBenignMalloc();
@@ -89162,6 +90795,7 @@ SQLITE_PRIVATE int sqlite3VdbeExec(
 #ifdef SQLITE_DEBUG
     if( db->flags & SQLITE_VdbeTrace ){
       sqlite3VdbePrintOp(stdout, (int)(pOp - aOp), pOp);
+      test_trace_breakpoint((int)(pOp - aOp),pOp,p);
     }
 #endif
 
@@ -89269,6 +90903,20 @@ SQLITE_PRIVATE int sqlite3VdbeExec(
 ** to the current line should be indented for EXPLAIN output.
 */
 case OP_Goto: {             /* jump */
+
+#ifdef SQLITE_DEBUG
+  /* In debuggging mode, when the p5 flags is set on an OP_Goto, that
+  ** means we should really jump back to the preceeding OP_ReleaseReg
+  ** instruction. */
+  if( pOp->p5 ){
+    assert( pOp->p2 < (int)(pOp - aOp) );
+    assert( pOp->p2 > 1 );
+    pOp = &aOp[pOp->p2 - 2];
+    assert( pOp[1].opcode==OP_ReleaseReg );
+    goto check_for_interrupt;
+  }
+#endif
+
 jump_to_p2_and_check_for_interrupt:
   pOp = &aOp[pOp->p2 - 1];
 
@@ -89283,7 +90931,7 @@ jump_to_p2_and_check_for_interrupt:
   ** checks on every opcode.  This helps sqlite3_step() to run about 1.5%
   ** faster according to "valgrind --tool=cachegrind" */
 check_for_interrupt:
-  if( db->u1.isInterrupted ) goto abort_due_to_interrupt;
+  if( AtomicLoad(&db->u1.isInterrupted) ) goto abort_due_to_interrupt;
 #ifndef SQLITE_OMIT_PROGRESS_CALLBACK
   /* Call the progress callback if it is configured and the required number
   ** of VDBE ops have been executed (either since this invocation of
@@ -89295,7 +90943,7 @@ check_for_interrupt:
     assert( db->nProgressOps!=0 );
     nProgressLimit += db->nProgressOps;
     if( db->xProgress(db->pProgressArg) ){
-      nProgressLimit = 0xffffffff;
+      nProgressLimit = LARGEST_UINT64;
       rc = SQLITE_INTERRUPT;
       goto abort_due_to_error;
     }
@@ -89423,6 +91071,7 @@ case OP_HaltIfNull: {      /* in3 */
 #endif
   if( (pIn3->flags & MEM_Null)==0 ) break;
   /* Fall through into OP_Halt */
+  /* no break */ deliberate_fall_through
 }
 
 /* Opcode:  Halt P1 P2 * P4 P5
@@ -89593,6 +91242,7 @@ case OP_String8: {         /* same as TK_STRING, out2 */
   pOp->opcode = OP_String;
   assert( rc==SQLITE_OK );
   /* Fall through to the next case, OP_String */
+  /* no break */ deliberate_fall_through
 }
 
 /* Opcode: String P1 P2 P3 P4 P5
@@ -89745,8 +91395,13 @@ case OP_Move: {
     memAboutToChange(p, pOut);
     sqlite3VdbeMemMove(pOut, pIn1);
 #ifdef SQLITE_DEBUG
-    if( pOut->pScopyFrom>=&aMem[p1] && pOut->pScopyFrom<pOut ){
-      pOut->pScopyFrom += pOp->p2 - p1;
+    pIn1->pScopyFrom = 0;
+    { int i;
+      for(i=1; i<p->nMem; i++){
+        if( aMem[i].pScopyFrom==pIn1 ){
+          aMem[i].pScopyFrom = pOut;
+        }
+      }
     }
 #endif
     Deephemeralize(pOut);
@@ -89887,13 +91542,22 @@ case OP_ResultRow: {
             || (pMem[i].flags & (MEM_Str|MEM_Blob))==0 );
     sqlite3VdbeMemNulTerminate(&pMem[i]);
     REGISTER_TRACE(pOp->p1+i, &pMem[i]);
+#ifdef SQLITE_DEBUG
+    /* The registers in the result will not be used again when the
+    ** prepared statement restarts.  This is because sqlite3_column()
+    ** APIs might have caused type conversions of made other changes to
+    ** the register values.  Therefore, we can go ahead and break any
+    ** OP_SCopy dependencies. */
+    pMem[i].pScopyFrom = 0;
+#endif
   }
   if( db->mallocFailed ) goto no_mem;
 
   if( db->mTrace & SQLITE_TRACE_ROW ){
-    db->xTrace(SQLITE_TRACE_ROW, db->pTraceArg, p, 0);
+    db->trace.xV2(SQLITE_TRACE_ROW, db->pTraceArg, p, 0);
   }
 
+
   /* Return SQLITE_ROW
   */
   p->pc = (int)(pOp - aOp) + 1;
@@ -89922,7 +91586,6 @@ case OP_Concat: {           /* same as TK_CONCAT, in1, in2, out3 */
   pIn1 = &aMem[pOp->p1];
   pIn2 = &aMem[pOp->p2];
   pOut = &aMem[pOp->p3];
-  testcase( pIn1==pIn2 );
   testcase( pOut==pIn2 );
   assert( pIn1!=pOut );
   flags1 = pIn1->flags;
@@ -90290,9 +91953,11 @@ case OP_Cast: {                  /* in1 */
   pIn1 = &aMem[pOp->p1];
   memAboutToChange(p, pIn1);
   rc = ExpandBlob(pIn1);
-  sqlite3VdbeMemCast(pIn1, pOp->p2, encoding);
-  UPDATE_MAX_BLOBSIZE(pIn1);
   if( rc ) goto abort_due_to_error;
+  rc = sqlite3VdbeMemCast(pIn1, pOp->p2, encoding);
+  if( rc ) goto abort_due_to_error;
+  UPDATE_MAX_BLOBSIZE(pIn1);
+  REGISTER_TRACE(pOp->p1, pIn1);
   break;
 }
 #endif /* SQLITE_OMIT_CAST */
@@ -90451,12 +92116,7 @@ case OP_Ge: {             /* same as TK_GE, jump, in1, in3 */
       if( (flags1 | flags3)&MEM_Str ){
         if( (flags1 & (MEM_Int|MEM_IntReal|MEM_Real|MEM_Str))==MEM_Str ){
           applyNumericAffinity(pIn1,0);
-          assert( flags3==pIn3->flags );
-          /* testcase( flags3!=pIn3->flags );
-          ** this used to be possible with pIn1==pIn3, but not since
-          ** the column cache was removed.  The following assignment
-          ** is essentially a no-op.  But, it provides defense-in-depth
-          ** in case our analysis is incorrect, so it is left in. */
+          testcase( flags3==pIn3->flags );
           flags3 = pIn3->flags;
         }
         if( (flags3 & (MEM_Int|MEM_IntReal|MEM_Real|MEM_Str))==MEM_Str ){
@@ -90479,7 +92139,7 @@ case OP_Ge: {             /* same as TK_GE, jump, in1, in3 */
         sqlite3VdbeMemStringify(pIn1, encoding, 1);
         testcase( (flags1&MEM_Dyn) != (pIn1->flags&MEM_Dyn) );
         flags1 = (pIn1->flags & ~MEM_TypeMask) | (flags1 & MEM_TypeMask);
-        assert( pIn1!=pIn3 );
+        if( NEVER(pIn1==pIn3) ) flags3 = flags1 | MEM_Str;
       }
       if( (flags3 & MEM_Str)==0 && (flags3&(MEM_Int|MEM_Real|MEM_IntReal))!=0 ){
         testcase( pIn3->flags & MEM_Int );
@@ -90514,10 +92174,10 @@ compare_op:
   }
 
   /* Undo any changes made by applyAffinity() to the input registers. */
-  assert( (pIn1->flags & MEM_Dyn) == (flags1 & MEM_Dyn) );
-  pIn1->flags = flags1;
   assert( (pIn3->flags & MEM_Dyn) == (flags3 & MEM_Dyn) );
   pIn3->flags = flags3;
+  assert( (pIn1->flags & MEM_Dyn) == (flags1 & MEM_Dyn) );
+  pIn1->flags = flags1;
 
   if( pOp->p5 & SQLITE_STOREP2 ){
     pOut = &aMem[pOp->p2];
@@ -90553,16 +92213,31 @@ compare_op:
 
 /* Opcode: ElseNotEq * P2 * * *
 **
-** This opcode must immediately follow an OP_Lt or OP_Gt comparison operator.
-** If result of an OP_Eq comparison on the same two operands
-** would have be NULL or false (0), then then jump to P2.
-** If the result of an OP_Eq comparison on the two previous operands
-** would have been true (1), then fall through.
+** This opcode must follow an OP_Lt or OP_Gt comparison operator.  There
+** can be zero or more OP_ReleaseReg opcodes intervening, but no other
+** opcodes are allowed to occur between this instruction and the previous
+** OP_Lt or OP_Gt.  Furthermore, the prior OP_Lt or OP_Gt must have the
+** SQLITE_STOREP2 bit set in the P5 field.
+**
+** If result of an OP_Eq comparison on the same two operands as the
+** prior OP_Lt or OP_Gt would have been NULL or false (0), then then
+** jump to P2.  If the result of an OP_Eq comparison on the two previous
+** operands would have been true (1), then fall through.
 */
 case OP_ElseNotEq: {       /* same as TK_ESCAPE, jump */
-  assert( pOp>aOp );
-  assert( pOp[-1].opcode==OP_Lt || pOp[-1].opcode==OP_Gt );
-  assert( pOp[-1].p5 & SQLITE_STOREP2 );
+
+#ifdef SQLITE_DEBUG
+  /* Verify the preconditions of this opcode - that it follows an OP_Lt or
+  ** OP_Gt with the SQLITE_STOREP2 flag set, with zero or more intervening
+  ** OP_ReleaseReg opcodes */
+  int iAddr;
+  for(iAddr = (int)(pOp - aOp) - 1; ALWAYS(iAddr>=0); iAddr--){
+    if( aOp[iAddr].opcode==OP_ReleaseReg ) continue;
+    assert( aOp[iAddr].opcode==OP_Lt || aOp[iAddr].opcode==OP_Gt );
+    assert( aOp[iAddr].p5 & SQLITE_STOREP2 );
+    break;
+  }
+#endif /* SQLITE_DEBUG */
   VdbeBranchTaken(iCompare!=0, 2);
   if( iCompare!=0 ) goto jump_to_p2;
   break;
@@ -90615,10 +92290,10 @@ case OP_Compare: {
   int p1;
   int p2;
   const KeyInfo *pKeyInfo;
-  int idx;
+  u32 idx;
   CollSeq *pColl;    /* Collating sequence to use on this term */
   int bRev;          /* True for DESCENDING sort order */
-  int *aPermute;     /* The permutation */
+  u32 *aPermute;     /* The permutation */
 
   if( (pOp->p5 & OPFLAG_PERMUTE)==0 ){
     aPermute = 0;
@@ -90638,7 +92313,7 @@ case OP_Compare: {
 #ifdef SQLITE_DEBUG
   if( aPermute ){
     int k, mx = 0;
-    for(k=0; k<n; k++) if( aPermute[k]>mx ) mx = aPermute[k];
+    for(k=0; k<n; k++) if( aPermute[k]>(u32)mx ) mx = aPermute[k];
     assert( p1>0 && p1+mx<=(p->nMem+1 - p->nCursor)+1 );
     assert( p2>0 && p2+mx<=(p->nMem+1 - p->nCursor)+1 );
   }else{
@@ -90647,7 +92322,7 @@ case OP_Compare: {
   }
 #endif /* SQLITE_DEBUG */
   for(i=0; i<n; i++){
-    idx = aPermute ? aPermute[i] : i;
+    idx = aPermute ? aPermute[i] : (u32)i;
     assert( memIsValid(&aMem[p1+idx]) );
     assert( memIsValid(&aMem[p2+idx]) );
     REGISTER_TRACE(p1+idx, &aMem[p1+idx]);
@@ -90958,7 +92633,7 @@ case OP_Offset: {          /* out3 */
 ** skipped for length() and all content loading can be skipped for typeof().
 */
 case OP_Column: {
-  int p2;            /* column number to retrieve */
+  u32 p2;            /* column number to retrieve */
   VdbeCursor *pC;    /* The VDBE cursor */
   BtCursor *pCrsr;   /* The BTree cursor */
   u32 *aOffset;      /* aOffset[i] is offset to start of data for i-th column */
@@ -90973,8 +92648,10 @@ case OP_Column: {
   u32 t;             /* A type code from the record header */
   Mem *pReg;         /* PseudoTable input register */
 
+  assert( pOp->p1>=0 && pOp->p1<p->nCursor );
   pC = p->apCsr[pOp->p1];
-  p2 = pOp->p2;
+  assert( pC!=0 );
+  p2 = (u32)pOp->p2;
 
   /* If the cursor cache is stale (meaning it is not currently point at
   ** the correct row) then bring it up-to-date by doing the necessary
@@ -90985,9 +92662,8 @@ case OP_Column: {
   assert( pOp->p3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) );
   pDest = &aMem[pOp->p3];
   memAboutToChange(p, pDest);
-  assert( pOp->p1>=0 && pOp->p1<p->nCursor );
   assert( pC!=0 );
-  assert( p2<pC->nField );
+  assert( p2<(u32)pC->nField );
   aOffset = pC->aOffset;
   assert( pC->eCurType!=CURTYPE_VTAB );
   assert( pC->eCurType!=CURTYPE_PSEUDO || pC->nullRow );
@@ -91078,7 +92754,7 @@ case OP_Column: {
       /* Make sure zData points to enough of the record to cover the header. */
       if( pC->aRow==0 ){
         memset(&sMem, 0, sizeof(sMem));
-        rc = sqlite3VdbeMemFromBtree(pC->uc.pCursor, 0, aOffset[0], &sMem);
+        rc = sqlite3VdbeMemFromBtreeZeroOffset(pC->uc.pCursor,aOffset[0],&sMem);
         if( rc!=SQLITE_OK ) goto abort_due_to_error;
         zData = (u8*)sMem.z;
       }else{
@@ -91102,7 +92778,7 @@ case OP_Column: {
           offset64 += sqlite3VdbeSerialTypeLen(t);
         }
         aOffset[++i] = (u32)(offset64 & 0xffffffff);
-      }while( i<=p2 && zHdr<zEndHdr );
+      }while( (u32)i<=p2 && zHdr<zEndHdr );
 
       /* The record is corrupt if any of the following are true:
       ** (1) the bytes of the header extend past the declared header size
@@ -91196,10 +92872,11 @@ case OP_Column: {
       **
       ** Although sqlite3VdbeSerialGet() may read at most 8 bytes from the
       ** buffer passed to it, debugging function VdbeMemPrettyPrint() may
-      ** read up to 16. So 16 bytes of bogus content is supplied.
+      ** read more.  Use the global constant sqlite3CtypeMap[] as the array,
+      ** as that array is 256 bytes long (plenty for VdbeMemPrettyPrint())
+      ** and it begins with a bunch of zeros.
       */
-      static u8 aZero[16];  /* This is the bogus content */
-      sqlite3VdbeSerialGet(aZero, t, pDest);
+      sqlite3VdbeSerialGet((u8*)sqlite3CtypeMap, t, pDest);
     }else{
       rc = sqlite3VdbeMemFromBtree(pC->uc.pCursor, aOffset[p2], len, pDest);
       if( rc!=SQLITE_OK ) goto abort_due_to_error;
@@ -91242,7 +92919,7 @@ case OP_Affinity: {
   pIn1 = &aMem[pOp->p1];
   while( 1 /*exit-by-break*/ ){
     assert( pIn1 <= &p->aMem[(p->nMem+1 - p->nCursor)] );
-    assert( memIsValid(pIn1) );
+    assert( zAffinity[0]==SQLITE_AFF_NONE || memIsValid(pIn1) );
     applyAffinity(pIn1, zAffinity[0], encoding);
     if( zAffinity[0]==SQLITE_AFF_REAL && (pIn1->flags & MEM_Int)!=0 ){
       /* When applying REAL affinity, if the result is still an MEM_Int
@@ -91285,6 +92962,17 @@ case OP_Affinity: {
 ** macros defined in sqliteInt.h.
 **
 ** If P4 is NULL then all index fields have the affinity BLOB.
+**
+** The meaning of P5 depends on whether or not the SQLITE_ENABLE_NULL_TRIM
+** compile-time option is enabled:
+**
+**   * If SQLITE_ENABLE_NULL_TRIM is enabled, then the P5 is the index
+**     of the right-most table that can be null-trimmed.
+**
+**   * If SQLITE_ENABLE_NULL_TRIM is omitted, then P5 has the value
+**     OPFLAG_NOCHNG_MAGIC if the OP_MakeRecord opcode is allowed to
+**     accept no-change records with serial_type 10.  This value is
+**     only used inside an assert() and does not affect the end result.
 */
 case OP_MakeRecord: {
   Mem *pRec;             /* The new record */
@@ -91403,7 +93091,9 @@ case OP_MakeRecord: {
         ** Give such values a special internal-use-only serial-type of 10
         ** so that they can be passed through to xUpdate and have
         ** a true sqlite3_value_nochange(). */
+#ifndef SQLITE_ENABLE_NULL_TRIM
         assert( pOp->p5==OPFLAG_NOCHNG_MAGIC || CORRUPT_DB );
+#endif
         pRec->uTemp = 10;
       }else{
         pRec->uTemp = 0;
@@ -91552,13 +93242,16 @@ case OP_MakeRecord: {
   break;
 }
 
-/* Opcode: Count P1 P2 * * *
+/* Opcode: Count P1 P2 p3 * *
 ** Synopsis: r[P2]=count()
 **
 ** Store the number of entries (an integer value) in the table or index
-** opened by cursor P1 in register P2
+** opened by cursor P1 in register P2.
+**
+** If P3==0, then an exact count is obtained, which involves visiting
+** every btree page of the table.  But if P3 is non-zero, an estimate
+** is returned based on the current cursor position.
 */
-#ifndef SQLITE_OMIT_BTREECOUNT
 case OP_Count: {         /* out2 */
   i64 nEntry;
   BtCursor *pCrsr;
@@ -91566,14 +93259,17 @@ case OP_Count: {         /* out2 */
   assert( p->apCsr[pOp->p1]->eCurType==CURTYPE_BTREE );
   pCrsr = p->apCsr[pOp->p1]->uc.pCursor;
   assert( pCrsr );
-  nEntry = 0;  /* Not needed.  Only used to silence a warning. */
-  rc = sqlite3BtreeCount(pCrsr, &nEntry);
-  if( rc ) goto abort_due_to_error;
+  if( pOp->p3 ){
+    nEntry = sqlite3BtreeRowCountEst(pCrsr);
+  }else{
+    nEntry = 0;  /* Not needed.  Only used to silence a warning. */
+    rc = sqlite3BtreeCount(db, pCrsr, &nEntry);
+    if( rc ) goto abort_due_to_error;
+  }
   pOut = out2Prerelease(p, pOp);
   pOut->u.i = nEntry;
-  break;
+  goto check_for_interrupt;
 }
-#endif
 
 /* Opcode: Savepoint P1 * * P4 *
 **
@@ -91688,8 +93384,12 @@ case OP_Savepoint: {
           p->rc = rc = SQLITE_BUSY;
           goto vdbe_return;
         }
-        db->isTransactionSavepoint = 0;
         rc = p->rc;
+        if( rc ){
+          db->autoCommit = 0;
+        }else{
+          db->isTransactionSavepoint = 0;
+        }
       }else{
         int isSchemaChange;
         iSavepoint = db->nSavepoint - iSavepoint - 1;
@@ -91717,6 +93417,7 @@ case OP_Savepoint: {
           db->mDbFlags |= DBFLAG_SchemaChange;
         }
       }
+      if( rc ) goto abort_due_to_error;
 
       /* Regardless of whether this is a RELEASE or ROLLBACK, destroy all
       ** savepoints nested inside of the savepoint being operated on. */
@@ -91799,7 +93500,6 @@ case OP_AutoCommit: {
       p->rc = rc = SQLITE_BUSY;
       goto vdbe_return;
     }
-    assert( db->nStatement==0 );
     sqlite3CloseSavepoints(db);
     if( p->rc==SQLITE_OK ){
       rc = SQLITE_DONE;
@@ -91880,7 +93580,8 @@ case OP_Transaction: {
       goto abort_due_to_error;
     }
 
-    if( pOp->p2 && p->usesStmtJournal
+    if( p->usesStmtJournal
+     && pOp->p2
      && (db->autoCommit==0 || db->nVdbeRead>1)
     ){
       assert( sqlite3BtreeIsInTrans(pBt) );
@@ -91968,7 +93669,7 @@ case OP_ReadCookie: {               /* out2 */
   break;
 }
 
-/* Opcode: SetCookie P1 P2 P3 * *
+/* Opcode: SetCookie P1 P2 P3 * P5
 **
 ** Write the integer value P3 into cookie number P2 of database P1.
 ** P2==1 is the schema version.  P2==2 is the database format.
@@ -91977,6 +93678,11 @@ case OP_ReadCookie: {               /* out2 */
 ** database file used to store temporary tables.
 **
 ** A transaction must be started before executing this opcode.
+**
+** If P2 is the SCHEMA_VERSION cookie (cookie number 1) then the internal
+** schema version is set to P3-P5.  The "PRAGMA schema_version=N" statement
+** has P5 set to 1, so that the internal schema version will be different
+** from the database schema version, resulting in a schema reset.
 */
 case OP_SetCookie: {
   Db *pDb;
@@ -91993,7 +93699,7 @@ case OP_SetCookie: {
   rc = sqlite3BtreeUpdateMeta(pDb->pBt, pOp->p2, pOp->p3);
   if( pOp->p2==BTREE_SCHEMA_VERSION ){
     /* When the schema cookie changes, record the new cookie internally */
-    pDb->pSchema->schema_cookie = pOp->p3;
+    pDb->pSchema->schema_cookie = pOp->p3 - pOp->p5;
     db->mDbFlags |= DBFLAG_SchemaChange;
   }else if( pOp->p2==BTREE_FILE_FORMAT ){
     /* Record changes in the file format */
@@ -92024,7 +93730,7 @@ case OP_SetCookie: {
 ** <ul>
 ** <li>  <b>0x02 OPFLAG_SEEKEQ</b>: This cursor will only be used for
 **       equality lookups (implemented as a pair of opcodes OP_SeekGE/OP_IdxGT
-**       of OP_SeekLE/OP_IdxGT)
+**       of OP_SeekLE/OP_IdxLT)
 ** </ul>
 **
 ** The P4 value may be either an integer (P4_INT32) or a pointer to
@@ -92054,7 +93760,7 @@ case OP_SetCookie: {
 ** <ul>
 ** <li>  <b>0x02 OPFLAG_SEEKEQ</b>: This cursor will only be used for
 **       equality lookups (implemented as a pair of opcodes OP_SeekGE/OP_IdxGT
-**       of OP_SeekLE/OP_IdxGT)
+**       of OP_SeekLE/OP_IdxLT)
 ** </ul>
 **
 ** See also: OP_OpenRead, OP_OpenWrite
@@ -92078,7 +93784,7 @@ case OP_SetCookie: {
 ** <ul>
 ** <li>  <b>0x02 OPFLAG_SEEKEQ</b>: This cursor will only be used for
 **       equality lookups (implemented as a pair of opcodes OP_SeekGE/OP_IdxGT
-**       of OP_SeekLE/OP_IdxGT)
+**       of OP_SeekLE/OP_IdxLT)
 ** <li>  <b>0x08 OPFLAG_FORDELETE</b>: This cursor is used only to seek
 **       and subsequently delete entries in an index btree.  This is a
 **       hint to the storage engine that the storage engine is allowed to
@@ -92096,7 +93802,7 @@ case OP_SetCookie: {
 case OP_ReopenIdx: {
   int nField;
   KeyInfo *pKeyInfo;
-  int p2;
+  u32 p2;
   int iDb;
   int wrFlag;
   Btree *pX;
@@ -92127,7 +93833,7 @@ case OP_OpenWrite:
 
   nField = 0;
   pKeyInfo = 0;
-  p2 = pOp->p2;
+  p2 = (u32)pOp->p2;
   iDb = pOp->p3;
   assert( iDb>=0 && iDb<db->nDb );
   assert( DbMaskTest(p->btreeMask, iDb) );
@@ -92146,7 +93852,7 @@ case OP_OpenWrite:
   }
   if( pOp->p5 & OPFLAG_P2ISREG ){
     assert( p2>0 );
-    assert( p2<=(p->nMem+1 - p->nCursor) );
+    assert( p2<=(u32)(p->nMem+1 - p->nCursor) );
     assert( pOp->opcode==OP_OpenWrite );
     pIn2 = &aMem[p2];
     assert( memIsValid(pIn2) );
@@ -92190,9 +93896,7 @@ open_cursor_set_hints:
   assert( OPFLAG_BULKCSR==BTREE_BULKLOAD );
   assert( OPFLAG_SEEKEQ==BTREE_SEEK_EQ );
   testcase( pOp->p5 & OPFLAG_BULKCSR );
-#ifdef SQLITE_ENABLE_CURSOR_HINTS
   testcase( pOp->p2 & OPFLAG_SEEKEQ );
-#endif
   sqlite3BtreeCursorHintFlags(pCur->uc.pCursor,
                                (pOp->p5 & (OPFLAG_BULKCSR|OPFLAG_SEEKEQ)));
   if( rc ) goto abort_due_to_error;
@@ -92212,6 +93916,7 @@ case OP_OpenDup: {
   VdbeCursor *pCx;      /* The new cursor */
 
   pOrig = p->apCsr[pOp->p2];
+  assert( pOrig );
   assert( pOrig->pBtx!=0 );  /* Only ephemeral cursors can be duplicated */
 
   pCx = allocateCursor(p, pOp->p1, pOrig->nField, -1, CURTYPE_BTREE);
@@ -92275,15 +93980,13 @@ case OP_OpenEphemeral: {
   assert( pOp->p1>=0 );
   assert( pOp->p2>=0 );
   pCx = p->apCsr[pOp->p1];
-  if( pCx ){
+  if( pCx && pCx->pBtx ){
     /* If the ephermeral table is already open, erase all existing content
     ** so that the table is empty again, rather than creating a new table. */
     assert( pCx->isEphemeral );
     pCx->seqCount = 0;
     pCx->cacheStatus = CACHE_STALE;
-    if( pCx->pBtx ){
-      rc = sqlite3BtreeClearTable(pCx->pBtx, pCx->pgnoRoot, 0);
-    }
+    rc = sqlite3BtreeClearTable(pCx->pBtx, pCx->pgnoRoot, 0);
   }else{
     pCx = allocateCursor(p, pOp->p1, pOp->p2, -1, CURTYPE_BTREE);
     if( pCx==0 ) goto no_mem;
@@ -92302,10 +94005,10 @@ case OP_OpenEphemeral: {
       */
       if( (pCx->pKeyInfo = pKeyInfo = pOp->p4.pKeyInfo)!=0 ){
         assert( pOp->p4type==P4_KEYINFO );
-        rc = sqlite3BtreeCreateTable(pCx->pBtx, (int*)&pCx->pgnoRoot,
+        rc = sqlite3BtreeCreateTable(pCx->pBtx, &pCx->pgnoRoot,
                                      BTREE_BLOBKEY | pOp->p5);
         if( rc==SQLITE_OK ){
-          assert( pCx->pgnoRoot==MASTER_ROOT+1 );
+          assert( pCx->pgnoRoot==SCHEMA_ROOT+1 );
           assert( pKeyInfo->db==db );
           assert( pKeyInfo->enc==ENC(db) );
           rc = sqlite3BtreeCursor(pCx->pBtx, pCx->pgnoRoot, BTREE_WRCSR,
@@ -92313,8 +94016,8 @@ case OP_OpenEphemeral: {
         }
         pCx->isTable = 0;
       }else{
-        pCx->pgnoRoot = MASTER_ROOT;
-        rc = sqlite3BtreeCursor(pCx->pBtx, MASTER_ROOT, BTREE_WRCSR,
+        pCx->pgnoRoot = SCHEMA_ROOT;
+        rc = sqlite3BtreeCursor(pCx->pBtx, SCHEMA_ROOT, BTREE_WRCSR,
                                 0, pCx->uc.pCursor);
         pCx->isTable = 1;
       }
@@ -92449,11 +94152,13 @@ case OP_ColumnsUsed: {
 ** greater than or equal to the key and P2 is not zero, then jump to P2.
 **
 ** If the cursor P1 was opened using the OPFLAG_SEEKEQ flag, then this
-** opcode will always land on a record that equally equals the key, or
-** else jump immediately to P2.  When the cursor is OPFLAG_SEEKEQ, this
-** opcode must be followed by an IdxLE opcode with the same arguments.
-** The IdxLE opcode will be skipped if this opcode succeeds, but the
-** IdxLE opcode will be used on subsequent loop iterations.
+** opcode will either land on a record that exactly matches the key, or
+** else it will cause a jump to P2.  When the cursor is OPFLAG_SEEKEQ,
+** this opcode must be followed by an IdxLE opcode with the same arguments.
+** The IdxGT opcode will be skipped if this opcode succeeds, but the
+** IdxGT opcode will be used on subsequent loop iterations.  The
+** OPFLAG_SEEKEQ flags is a hint to the btree layer to say that this
+** is an equality search.
 **
 ** This opcode leaves the cursor configured to move in forward order,
 ** from the beginning toward the end.  In other words, the cursor is
@@ -92469,7 +94174,7 @@ case OP_ColumnsUsed: {
 ** to an SQL index, then P3 is the first in an array of P4 registers
 ** that are used as an unpacked index key.
 **
-** Reposition cursor P1 so that  it points to the smallest entry that
+** Reposition cursor P1 so that it points to the smallest entry that
 ** is greater than the key value. If there are no records greater than
 ** the key and P2 is not zero, then jump to P2.
 **
@@ -92514,11 +94219,13 @@ case OP_ColumnsUsed: {
 ** configured to use Prev, not Next.
 **
 ** If the cursor P1 was opened using the OPFLAG_SEEKEQ flag, then this
-** opcode will always land on a record that equally equals the key, or
-** else jump immediately to P2.  When the cursor is OPFLAG_SEEKEQ, this
-** opcode must be followed by an IdxGE opcode with the same arguments.
+** opcode will either land on a record that exactly matches the key, or
+** else it will cause a jump to P2.  When the cursor is OPFLAG_SEEKEQ,
+** this opcode must be followed by an IdxLE opcode with the same arguments.
 ** The IdxGE opcode will be skipped if this opcode succeeds, but the
-** IdxGE opcode will be used on subsequent loop iterations.
+** IdxGE opcode will be used on subsequent loop iterations.  The
+** OPFLAG_SEEKEQ flags is a hint to the btree layer to say that this
+** is an equality search.
 **
 ** See also: Found, NotFound, SeekGt, SeekGe, SeekLt
 */
@@ -92555,7 +94262,7 @@ case OP_SeekGT: {       /* jump, in3, group */
   pC->cacheStatus = CACHE_STALE;
   if( pC->isTable ){
     u16 flags3, newType;
-    /* The BTREE_SEEK_EQ flag is only set on index cursors */
+    /* The OPFLAG_SEEKEQ/BTREE_SEEK_EQ flag is only set on index cursors */
     assert( sqlite3BtreeCursorHasHint(pC->uc.pCursor, BTREE_SEEK_EQ)==0
               || CORRUPT_DB );
 
@@ -92614,14 +94321,17 @@ case OP_SeekGT: {       /* jump, in3, group */
       goto abort_due_to_error;
     }
   }else{
-    /* For a cursor with the BTREE_SEEK_EQ hint, only the OP_SeekGE and
-    ** OP_SeekLE opcodes are allowed, and these must be immediately followed
-    ** by an OP_IdxGT or OP_IdxLT opcode, respectively, with the same key.
+    /* For a cursor with the OPFLAG_SEEKEQ/BTREE_SEEK_EQ hint, only the
+    ** OP_SeekGE and OP_SeekLE opcodes are allowed, and these must be
+    ** immediately followed by an OP_IdxGT or OP_IdxLT opcode, respectively,
+    ** with the same key.
     */
     if( sqlite3BtreeCursorHasHint(pC->uc.pCursor, BTREE_SEEK_EQ) ){
       eqOnly = 1;
       assert( pOp->opcode==OP_SeekGE || pOp->opcode==OP_SeekLE );
       assert( pOp[1].opcode==OP_IdxLT || pOp[1].opcode==OP_IdxGT );
+      assert( pOp->opcode==OP_SeekGE || pOp[1].opcode==OP_IdxLT );
+      assert( pOp->opcode==OP_SeekLE || pOp[1].opcode==OP_IdxGT );
       assert( pOp[1].p1==pOp[0].p1 );
       assert( pOp[1].p2==pOp[0].p2 );
       assert( pOp[1].p3==pOp[0].p3 );
@@ -92730,6 +94440,20 @@ case OP_SeekHit: {
   break;
 }
 
+/* Opcode: IfNotOpen P1 P2 * * *
+** Synopsis: if( !csr[P1] ) goto P2
+**
+** If cursor P1 is not open, jump to instruction P2. Otherwise, fall through.
+*/
+case OP_IfNotOpen: {        /* jump */
+  assert( pOp->p1>=0 && pOp->p1<p->nCursor );
+  VdbeBranchTaken(p->apCsr[pOp->p1]==0, 2);
+  if( !p->apCsr[pOp->p1] ){
+    goto jump_to_p2_and_check_for_interrupt;
+  }
+  break;
+}
+
 /* Opcode: Found P1 P2 P3 P4 *
 ** Synopsis: key=r[P3@P4]
 **
@@ -92823,6 +94547,7 @@ case OP_IfNoHope: {     /* jump, in3 */
   assert( pC!=0 );
   if( pC->seekHit ) break;
   /* Fall through into OP_NotFound */
+  /* no break */ deliberate_fall_through
 }
 case OP_NoConflict:     /* jump, in3 */
 case OP_NotFound:       /* jump, in3 */
@@ -92977,6 +94702,7 @@ case OP_SeekRowid: {        /* jump, in3 */
     goto notExistsWithKey;
   }
   /* Fall through into OP_NotExists */
+  /* no break */ deliberate_fall_through
 case OP_NotExists:          /* jump, in3 */
   pIn3 = &aMem[pOp->p3];
   assert( (pIn3->flags & MEM_Int)!=0 || pOp->opcode==OP_SeekRowid );
@@ -93218,6 +94944,7 @@ case OP_Insert: {
   pC = p->apCsr[pOp->p1];
   assert( pC!=0 );
   assert( pC->eCurType==CURTYPE_BTREE );
+  assert( pC->deferredMoveto==0 );
   assert( pC->uc.pCursor!=0 );
   assert( (pOp->p5 & OPFLAG_ISNOOP) || pC->isTable );
   assert( pOp->p4type==P4_TABLE || pOp->p4type>=P4_STATIC );
@@ -93335,7 +95062,11 @@ case OP_Delete: {
   sqlite3VdbeIncrWriteCounter(p, pC);
 
 #ifdef SQLITE_DEBUG
-  if( pOp->p4type==P4_TABLE && HasRowid(pOp->p4.pTab) && pOp->p5==0 ){
+  if( pOp->p4type==P4_TABLE
+   && HasRowid(pOp->p4.pTab)
+   && pOp->p5==0
+   && sqlite3BtreeCursorIsValidNN(pC->uc.pCursor)
+  ){
     /* If p5 is zero, the seek operation that positioned the cursor prior to
     ** OP_Delete will have also set the pC->movetoTarget field to the rowid of
     ** the row that is being deleted */
@@ -93540,17 +95271,13 @@ case OP_RowData: {
   */
   assert( pC->deferredMoveto==0 );
   assert( sqlite3BtreeCursorIsValid(pCrsr) );
-#if 0  /* Not required due to the previous to assert() statements */
-  rc = sqlite3VdbeCursorMoveto(pC);
-  if( rc!=SQLITE_OK ) goto abort_due_to_error;
-#endif
 
   n = sqlite3BtreePayloadSize(pCrsr);
   if( n>(u32)db->aLimit[SQLITE_LIMIT_LENGTH] ){
     goto too_big;
   }
   testcase( n==0 );
-  rc = sqlite3VdbeMemFromBtree(pCrsr, 0, n, pOut);
+  rc = sqlite3VdbeMemFromBtreeZeroOffset(pCrsr, n, pOut);
   if( rc ) goto abort_due_to_error;
   if( !pOp->p3 ) Deephemeralize(pOut);
   UPDATE_MAX_BLOBSIZE(pOut);
@@ -93747,6 +95474,7 @@ case OP_Sort: {        /* jump */
 #endif
   p->aCounter[SQLITE_STMTSTATUS_SORT]++;
   /* Fall through into OP_Rewind */
+  /* no break */ deliberate_fall_through
 }
 /* Opcode: Rewind P1 P2 * * *
 **
@@ -93928,6 +95656,36 @@ next_tail:
 ** This instruction only works for indices.  The equivalent instruction
 ** for tables is OP_Insert.
 */
+case OP_IdxInsert: {        /* in2 */
+  VdbeCursor *pC;
+  BtreePayload x;
+
+  assert( pOp->p1>=0 && pOp->p1<p->nCursor );
+  pC = p->apCsr[pOp->p1];
+  sqlite3VdbeIncrWriteCounter(p, pC);
+  assert( pC!=0 );
+  assert( !isSorter(pC) );
+  pIn2 = &aMem[pOp->p2];
+  assert( pIn2->flags & MEM_Blob );
+  if( pOp->p5 & OPFLAG_NCHANGE ) p->nChange++;
+  assert( pC->eCurType==CURTYPE_BTREE );
+  assert( pC->isTable==0 );
+  rc = ExpandBlob(pIn2);
+  if( rc ) goto abort_due_to_error;
+  x.nKey = pIn2->n;
+  x.pKey = pIn2->z;
+  x.aMem = aMem + pOp->p3;
+  x.nMem = (u16)pOp->p4.i;
+  rc = sqlite3BtreeInsert(pC->uc.pCursor, &x,
+       (pOp->p5 & (OPFLAG_APPEND|OPFLAG_SAVEPOSITION)),
+      ((pOp->p5 & OPFLAG_USESEEKRESULT) ? pC->seekResult : 0)
+      );
+  assert( pC->deferredMoveto==0 );
+  pC->cacheStatus = CACHE_STALE;
+  if( rc) goto abort_due_to_error;
+  break;
+}
+
 /* Opcode: SorterInsert P1 P2 * * *
 ** Synopsis: key=r[P2]
 **
@@ -93935,47 +95693,37 @@ next_tail:
 ** MakeRecord instructions.  This opcode writes that key
 ** into the sorter P1.  Data for the entry is nil.
 */
-case OP_SorterInsert:       /* in2 */
-case OP_IdxInsert: {        /* in2 */
+case OP_SorterInsert: {     /* in2 */
   VdbeCursor *pC;
-  BtreePayload x;
 
   assert( pOp->p1>=0 && pOp->p1<p->nCursor );
   pC = p->apCsr[pOp->p1];
   sqlite3VdbeIncrWriteCounter(p, pC);
   assert( pC!=0 );
-  assert( isSorter(pC)==(pOp->opcode==OP_SorterInsert) );
+  assert( isSorter(pC) );
   pIn2 = &aMem[pOp->p2];
   assert( pIn2->flags & MEM_Blob );
-  if( pOp->p5 & OPFLAG_NCHANGE ) p->nChange++;
-  assert( pC->eCurType==CURTYPE_BTREE || pOp->opcode==OP_SorterInsert );
   assert( pC->isTable==0 );
   rc = ExpandBlob(pIn2);
   if( rc ) goto abort_due_to_error;
-  if( pOp->opcode==OP_SorterInsert ){
-    rc = sqlite3VdbeSorterWrite(pC, pIn2);
-  }else{
-    x.nKey = pIn2->n;
-    x.pKey = pIn2->z;
-    x.aMem = aMem + pOp->p3;
-    x.nMem = (u16)pOp->p4.i;
-    rc = sqlite3BtreeInsert(pC->uc.pCursor, &x,
-         (pOp->p5 & (OPFLAG_APPEND|OPFLAG_SAVEPOSITION)),
-        ((pOp->p5 & OPFLAG_USESEEKRESULT) ? pC->seekResult : 0)
-        );
-    assert( pC->deferredMoveto==0 );
-    pC->cacheStatus = CACHE_STALE;
-  }
+  rc = sqlite3VdbeSorterWrite(pC, pIn2);
   if( rc) goto abort_due_to_error;
   break;
 }
 
-/* Opcode: IdxDelete P1 P2 P3 * *
+/* Opcode: IdxDelete P1 P2 P3 * P5
 ** Synopsis: key=r[P2@P3]
 **
 ** The content of P3 registers starting at register P2 form
 ** an unpacked index key. This opcode removes that entry from the
 ** index opened by cursor P1.
+**
+** If P5 is not zero, then raise an SQLITE_CORRUPT_INDEX error
+** if no matching index entry is found.  This happens when running
+** an UPDATE or DELETE statement and the index entry to be updated
+** or deleted is not found.  For some uses of IdxDelete
+** (example:  the EXCEPT operator) it does not matter that no matching
+** entry is found.  For those cases, P5 is zero.
 */
 case OP_IdxDelete: {
   VdbeCursor *pC;
@@ -93992,7 +95740,6 @@ case OP_IdxDelete: {
   sqlite3VdbeIncrWriteCounter(p, pC);
   pCrsr = pC->uc.pCursor;
   assert( pCrsr!=0 );
-  assert( pOp->p5==0 );
   r.pKeyInfo = pC->pKeyInfo;
   r.nField = (u16)pOp->p3;
   r.default_rc = 0;
@@ -94002,6 +95749,9 @@ case OP_IdxDelete: {
   if( res==0 ){
     rc = sqlite3BtreeDelete(pCrsr, BTREE_AUXDELETE);
     if( rc ) goto abort_due_to_error;
+  }else if( pOp->p5 ){
+    rc = SQLITE_CORRUPT_INDEX;
+    goto abort_due_to_error;
   }
   assert( pC->deferredMoveto==0 );
   pC->cacheStatus = CACHE_STALE;
@@ -94091,6 +95841,24 @@ case OP_IdxRowid: {           /* out2 */
   break;
 }
 
+/* Opcode: FinishSeek P1 * * * *
+**
+** If cursor P1 was previously moved via OP_DeferredSeek, complete that
+** seek operation now, without further delay.  If the cursor seek has
+** already occurred, this instruction is a no-op.
+*/
+case OP_FinishSeek: {
+  VdbeCursor *pC;             /* The P1 index cursor */
+
+  assert( pOp->p1>=0 && pOp->p1<p->nCursor );
+  pC = p->apCsr[pOp->p1];
+  if( pC->deferredMoveto ){
+    rc = sqlite3VdbeFinishMoveto(pC);
+    if( rc ) goto abort_due_to_error;
+  }
+  break;
+}
+
 /* Opcode: IdxGE P1 P2 P3 P4 P5
 ** Synopsis: key=r[P3@P4]
 **
@@ -94273,7 +96041,7 @@ case OP_Clear: {
   assert( p->readOnly==0 );
   assert( DbMaskTest(p->btreeMask, pOp->p2) );
   rc = sqlite3BtreeClearTable(
-      db->aDb[pOp->p2].pBt, pOp->p1, (pOp->p3 ? &nChange : 0)
+      db->aDb[pOp->p2].pBt, (u32)pOp->p1, (pOp->p3 ? &nChange : 0)
   );
   if( pOp->p3 ){
     p->nChange += nChange;
@@ -94322,7 +96090,7 @@ case OP_ResetSorter: {
 ** The root page number of the new b-tree is stored in register P2.
 */
 case OP_CreateBtree: {          /* out2 */
-  int pgno;
+  Pgno pgno;
   Db *pDb;
 
   sqlite3VdbeIncrWriteCounter(p, 0);
@@ -94355,7 +96123,7 @@ case OP_SqlExec: {
 
 /* Opcode: ParseSchema P1 * * P4 *
 **
-** Read and parse all entries from the SQLITE_MASTER table of database P1
+** Read and parse all entries from the schema table of database P1
 ** that match the WHERE clause P4.  If P4 is a NULL pointer, then the
 ** entire schema for P1 is reparsed.
 **
@@ -94364,7 +96132,7 @@ case OP_SqlExec: {
 */
 case OP_ParseSchema: {
   int iDb;
-  const char *zMaster;
+  const char *zSchema;
   char *zSql;
   InitData initData;
 
@@ -94392,14 +96160,15 @@ case OP_ParseSchema: {
   }else
 #endif
   {
-    zMaster = MASTER_NAME;
+    zSchema = DFLT_SCHEMA_TABLE;
     initData.db = db;
     initData.iDb = iDb;
     initData.pzErrMsg = &p->zErrMsg;
     initData.mInitFlags = 0;
+    initData.mxPage = sqlite3BtreeLastPage(db->aDb[iDb].pBt);
     zSql = sqlite3MPrintf(db,
        "SELECT*FROM\"%w\".%s WHERE %s ORDER BY rowid",
-       db->aDb[iDb].zDbSName, zMaster, pOp->p4.z);
+       db->aDb[iDb].zDbSName, zSchema, pOp->p4.z);
     if( zSql==0 ){
       rc = SQLITE_NOMEM_BKPT;
     }else{
@@ -94413,7 +96182,7 @@ case OP_ParseSchema: {
       if( rc==SQLITE_OK && initData.nInitRow==0 ){
         /* The OP_ParseSchema opcode with a non-NULL P4 argument should parse
         ** at least one SQL statement. Any less than that indicates that
-        ** the sqlite_master table is corrupt. */
+        ** the sqlite_schema table is corrupt. */
         rc = SQLITE_CORRUPT_BKPT;
       }
       sqlite3DbFreeNN(db, zSql);
@@ -94510,7 +96279,7 @@ case OP_DropTrigger: {
 */
 case OP_IntegrityCk: {
   int nRoot;      /* Number of tables to check.  (Number of root pages.) */
-  int *aRoot;     /* Array of rootpage numbers for tables to be checked */
+  Pgno *aRoot;    /* Array of rootpage numbers for tables to be checked */
   int nErr;       /* Number of errors reported */
   char *z;        /* Text of the error report */
   Mem *pnErr;     /* Register keeping track of errors remaining */
@@ -94519,7 +96288,7 @@ case OP_IntegrityCk: {
   nRoot = pOp->p2;
   aRoot = pOp->p4.ai;
   assert( nRoot>0 );
-  assert( aRoot[0]==nRoot );
+  assert( aRoot[0]==(Pgno)nRoot );
   assert( pOp->p3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) );
   pnErr = &aMem[pOp->p3];
   assert( (pnErr->flags & MEM_Int)!=0 );
@@ -94527,7 +96296,7 @@ case OP_IntegrityCk: {
   pIn1 = &aMem[pOp->p1];
   assert( pOp->p5<db->nDb );
   assert( DbMaskTest(p->btreeMask, pOp->p5) );
-  z = sqlite3BtreeIntegrityCheck(db->aDb[pOp->p5].pBt, &aRoot[1], nRoot,
+  z = sqlite3BtreeIntegrityCheck(db, db->aDb[pOp->p5].pBt, &aRoot[1], nRoot,
                                  (int)pnErr->u.i+1, &nErr);
   sqlite3VdbeMemSetNull(pIn1);
   if( nErr==0 ){
@@ -94540,7 +96309,7 @@ case OP_IntegrityCk: {
   }
   UPDATE_MAX_BLOBSIZE(pIn1);
   sqlite3VdbeChangeEncoding(pIn1, encoding);
-  break;
+  goto check_for_interrupt;
 }
 #endif /* SQLITE_OMIT_INTEGRITY_CHECK */
 
@@ -94786,7 +96555,7 @@ case OP_Program: {        /* jump */
     int i;
     for(i=0; i<p->nMem; i++){
       aMem[i].pScopyFrom = 0;  /* Prevent false-positive AboutToChange() errs */
-      aMem[i].flags |= MEM_Undefined; /* Cause a fault if this reg is reused */
+      MemSetTypeFlag(&aMem[i], MEM_Undefined); /* Fault if this reg is reused */
     }
   }
 #endif
@@ -95059,6 +96828,7 @@ case OP_AggStep: {
 
   pOp->opcode = OP_AggStep1;
   /* Fall through into OP_AggStep */
+  /* no break */ deliberate_fall_through
 }
 case OP_AggStep1: {
   int i;
@@ -95397,6 +97167,36 @@ case OP_Expire: {
   break;
 }
 
+/* Opcode: CursorLock P1 * * * *
+**
+** Lock the btree to which cursor P1 is pointing so that the btree cannot be
+** written by an other cursor.
+*/
+case OP_CursorLock: {
+  VdbeCursor *pC;
+  assert( pOp->p1>=0 && pOp->p1<p->nCursor );
+  pC = p->apCsr[pOp->p1];
+  assert( pC!=0 );
+  assert( pC->eCurType==CURTYPE_BTREE );
+  sqlite3BtreeCursorPin(pC->uc.pCursor);
+  break;
+}
+
+/* Opcode: CursorUnlock P1 * * * *
+**
+** Unlock the btree to which cursor P1 is pointing so that it can be
+** written by other cursors.
+*/
+case OP_CursorUnlock: {
+  VdbeCursor *pC;
+  assert( pOp->p1>=0 && pOp->p1<p->nCursor );
+  pC = p->apCsr[pOp->p1];
+  assert( pC!=0 );
+  assert( pC->eCurType==CURTYPE_BTREE );
+  sqlite3BtreeCursorUnpin(pC->uc.pCursor);
+  break;
+}
+
 #ifndef SQLITE_OMIT_SHARED_CACHE
 /* Opcode: TableLock P1 P2 P3 P4 *
 ** Synopsis: iDb=P1 root=P2 write=P3
@@ -95641,7 +97441,7 @@ case OP_VColumn: {
   assert( pModule->xColumn );
   memset(&sContext, 0, sizeof(sContext));
   sContext.pOut = pDest;
-  testcase( (pOp->p5 & OPFLAG_NOCHNG)==0 && pOp->p5!=0 );
+  assert( pOp->p5==OPFLAG_NOCHNG || pOp->p5==0 );
   if( pOp->p5 & OPFLAG_NOCHNG ){
     sqlite3VdbeMemSetNull(pDest);
     pDest->flags = MEM_Null|MEM_Zero;
@@ -95866,13 +97666,15 @@ case OP_MaxPgcnt: {            /* out2 */
 }
 #endif
 
-/* Opcode: Function0 P1 P2 P3 P4 P5
-** Synopsis: r[P3]=func(r[P2@P5])
+/* Opcode: Function P1 P2 P3 P4 *
+** Synopsis: r[P3]=func(r[P2@NP])
 **
-** Invoke a user function (P4 is a pointer to a FuncDef object that
-** defines the function) with P5 arguments taken from register P2 and
-** successors.  The result of the function is stored in register P3.
-** Register P3 must not be one of the function inputs.
+** Invoke a user function (P4 is a pointer to an sqlite3_context object that
+** contains a pointer to the function to be run) with arguments taken
+** from register P2 and successors.  The number of arguments is in
+** the sqlite3_context object that P4 points to.
+** The result of the function is stored
+** in register P3.  Register P3 must not be one of the function inputs.
 **
 ** P1 is a 32-bit bitmask indicating whether or not each argument to the
 ** function was determined to be constant at compile time. If the first
@@ -95881,14 +97683,16 @@ case OP_MaxPgcnt: {            /* out2 */
 ** sqlite3_set_auxdata() API may be safely retained until the next
 ** invocation of this opcode.
 **
-** See also: Function, AggStep, AggFinal
+** See also: AggStep, AggFinal, PureFunc
 */
-/* Opcode: Function P1 P2 P3 P4 P5
-** Synopsis: r[P3]=func(r[P2@P5])
+/* Opcode: PureFunc P1 P2 P3 P4 *
+** Synopsis: r[P3]=func(r[P2@NP])
 **
 ** Invoke a user function (P4 is a pointer to an sqlite3_context object that
-** contains a pointer to the function to be run) with P5 arguments taken
-** from register P2 and successors.  The result of the function is stored
+** contains a pointer to the function to be run) with arguments taken
+** from register P2 and successors.  The number of arguments is in
+** the sqlite3_context object that P4 points to.
+** The result of the function is stored
 ** in register P3.  Register P3 must not be one of the function inputs.
 **
 ** P1 is a 32-bit bitmask indicating whether or not each argument to the
@@ -95898,40 +97702,16 @@ case OP_MaxPgcnt: {            /* out2 */
 ** sqlite3_set_auxdata() API may be safely retained until the next
 ** invocation of this opcode.
 **
-** SQL functions are initially coded as OP_Function0 with P4 pointing
-** to a FuncDef object.  But on first evaluation, the P4 operand is
-** automatically converted into an sqlite3_context object and the operation
-** changed to this OP_Function opcode.  In this way, the initialization of
-** the sqlite3_context object occurs only once, rather than once for each
-** evaluation of the function.
+** This opcode works exactly like OP_Function.  The only difference is in
+** its name.  This opcode is used in places where the function must be
+** purely non-deterministic.  Some built-in date/time functions can be
+** either determinitic of non-deterministic, depending on their arguments.
+** When those function are used in a non-deterministic way, they will check
+** to see if they were called using OP_PureFunc instead of OP_Function, and
+** if they were, they throw an error.
 **
-** See also: Function0, AggStep, AggFinal
+** See also: AggStep, AggFinal, Function
 */
-case OP_PureFunc0:              /* group */
-case OP_Function0: {            /* group */
-  int n;
-  sqlite3_context *pCtx;
-
-  assert( pOp->p4type==P4_FUNCDEF );
-  n = pOp->p5;
-  assert( pOp->p3>0 && pOp->p3<=(p->nMem+1 - p->nCursor) );
-  assert( n==0 || (pOp->p2>0 && pOp->p2+n<=(p->nMem+1 - p->nCursor)+1) );
-  assert( pOp->p3<pOp->p2 || pOp->p3>=pOp->p2+n );
-  pCtx = sqlite3DbMallocRawNN(db, sizeof(*pCtx) + (n-1)*sizeof(sqlite3_value*));
-  if( pCtx==0 ) goto no_mem;
-  pCtx->pOut = 0;
-  pCtx->pFunc = pOp->p4.pFunc;
-  pCtx->iOp = (int)(pOp - aOp);
-  pCtx->pVdbe = p;
-  pCtx->isError = 0;
-  pCtx->argc = n;
-  pOp->p4type = P4_FUNCCTX;
-  pOp->p4.pCtx = pCtx;
-  assert( OP_PureFunc == OP_PureFunc0+2 );
-  assert( OP_Function == OP_Function0+2 );
-  pOp->opcode += 2;
-  /* Fall through into OP_Function */
-}
 case OP_PureFunc:              /* group */
 case OP_Function: {            /* group */
   int i;
@@ -95946,9 +97726,11 @@ case OP_Function: {            /* group */
   ** reinitializes the relavant parts of the sqlite3_context object */
   pOut = &aMem[pOp->p3];
   if( pCtx->pOut != pOut ){
+    pCtx->pVdbe = p;
     pCtx->pOut = pOut;
     for(i=pCtx->argc-1; i>=0; i--) pCtx->argv[i] = &aMem[pOp->p2+i];
   }
+  assert( pCtx->pVdbe==p );
 
   memAboutToChange(p, pOut);
 #ifdef SQLITE_DEBUG
@@ -96036,18 +97818,17 @@ case OP_Init: {          /* jump */
   ){
 #ifndef SQLITE_OMIT_DEPRECATED
     if( db->mTrace & SQLITE_TRACE_LEGACY ){
-      void (*x)(void*,const char*) = (void(*)(void*,const char*))db->xTrace;
       char *z = sqlite3VdbeExpandSql(p, zTrace);
-      x(db->pTraceArg, z);
+      db->trace.xLegacy(db->pTraceArg, z);
       sqlite3_free(z);
     }else
 #endif
     if( db->nVdbeExec>1 ){
       char *z = sqlite3MPrintf(db, "-- %s", zTrace);
-      (void)db->xTrace(SQLITE_TRACE_STMT, db->pTraceArg, p, z);
+      (void)db->trace.xV2(SQLITE_TRACE_STMT, db->pTraceArg, p, z);
       sqlite3DbFree(db, z);
     }else{
-      (void)db->xTrace(SQLITE_TRACE_STMT, db->pTraceArg, p, zTrace);
+      (void)db->trace.xV2(SQLITE_TRACE_STMT, db->pTraceArg, p, zTrace);
     }
   }
 #ifdef SQLITE_USE_FCNTL_TRACE
@@ -96120,6 +97901,55 @@ case OP_Abortable: {
 }
 #endif
 
+#ifdef SQLITE_DEBUG
+/* Opcode:  ReleaseReg   P1 P2 P3 * P5
+** Synopsis: release r[P1@P2] mask P3
+**
+** Release registers from service.  Any content that was in the
+** the registers is unreliable after this opcode completes.
+**
+** The registers released will be the P2 registers starting at P1,
+** except if bit ii of P3 set, then do not release register P1+ii.
+** In other words, P3 is a mask of registers to preserve.
+**
+** Releasing a register clears the Mem.pScopyFrom pointer.  That means
+** that if the content of the released register was set using OP_SCopy,
+** a change to the value of the source register for the OP_SCopy will no longer
+** generate an assertion fault in sqlite3VdbeMemAboutToChange().
+**
+** If P5 is set, then all released registers have their type set
+** to MEM_Undefined so that any subsequent attempt to read the released
+** register (before it is reinitialized) will generate an assertion fault.
+**
+** P5 ought to be set on every call to this opcode.
+** However, there are places in the code generator will release registers
+** before their are used, under the (valid) assumption that the registers
+** will not be reallocated for some other purpose before they are used and
+** hence are safe to release.
+**
+** This opcode is only available in testing and debugging builds.  It is
+** not generated for release builds.  The purpose of this opcode is to help
+** validate the generated bytecode.  This opcode does not actually contribute
+** to computing an answer.
+*/
+case OP_ReleaseReg: {
+  Mem *pMem;
+  int i;
+  u32 constMask;
+  assert( pOp->p1>0 );
+  assert( pOp->p1+pOp->p2<=(p->nMem+1 - p->nCursor)+1 );
+  pMem = &aMem[pOp->p1];
+  constMask = pOp->p3;
+  for(i=0; i<pOp->p2; i++, pMem++){
+    if( i>=32 || (constMask & MASKBIT32(i))==0 ){
+      pMem->pScopyFrom = 0;
+      if( i<32 && pOp->p5 ) MemSetTypeFlag(pMem, MEM_Undefined);
+    }
+  }
+  break;
+}
+#endif
+
 /* Opcode: Noop * * * * *
 **
 ** Do nothing.  This instruction is often useful as a jump
@@ -96171,6 +98001,12 @@ default: {          /* This is really OP_Noop, OP_Explain */
       if( opProperty & OPFLG_OUT3 ){
         registerTrace(pOrigOp->p3, &aMem[pOrigOp->p3]);
       }
+      if( opProperty==0xff ){
+        /* Never happens.  This code exists to avoid a harmless linkage
+        ** warning aboud sqlite3VdbeRegisterDump() being defined but not
+        ** used. */
+        sqlite3VdbeRegisterDump(p);
+      }
     }
 #endif  /* SQLITE_DEBUG */
 #endif  /* NDEBUG */
@@ -96205,7 +98041,7 @@ vdbe_return:
   while( nVmStep>=nProgressLimit && db->xProgress!=0 ){
     nProgressLimit += db->nProgressOps;
     if( db->xProgress(db->pProgressArg) ){
-      nProgressLimit = 0xffffffff;
+      nProgressLimit = LARGEST_UINT64;
       rc = SQLITE_INTERRUPT;
       goto abort_due_to_error;
     }
@@ -96238,10 +98074,8 @@ no_mem:
   ** flag.
   */
 abort_due_to_interrupt:
-  assert( db->u1.isInterrupted );
-  rc = db->mallocFailed ? SQLITE_NOMEM_BKPT : SQLITE_INTERRUPT;
-  p->rc = rc;
-  sqlite3VdbeError(p, "%s", sqlite3ErrStr(rc));
+  assert( AtomicLoad(&db->u1.isInterrupted) );
+  rc = SQLITE_INTERRUPT;
   goto abort_due_to_error;
 }
 
@@ -97576,8 +99410,8 @@ static int vdbeSorterCompareText(
   int n2;
   int res;
 
-  getVarint32(&p1[1], n1);
-  getVarint32(&p2[1], n2);
+  getVarint32NR(&p1[1], n1);
+  getVarint32NR(&p2[1], n2);
   res = memcmp(v1, v2, (MIN(n1, n2) - 13)/2);
   if( res==0 ){
     res = n1 - n2;
@@ -98157,20 +99991,16 @@ static SorterCompare vdbeSorterGetCompare(VdbeSorter *p){
 */
 static int vdbeSorterSort(SortSubtask *pTask, SorterList *pList){
   int i;
-  SorterRecord **aSlot;
   SorterRecord *p;
   int rc;
+  SorterRecord *aSlot[64];
 
   rc = vdbeSortAllocUnpacked(pTask);
   if( rc!=SQLITE_OK ) return rc;
 
   p = pList->pList;
   pTask->xCompare = vdbeSorterGetCompare(pTask->pSorter);
-
-  aSlot = (SorterRecord **)sqlite3MallocZero(64 * sizeof(SorterRecord *));
-  if( !aSlot ){
-    return SQLITE_NOMEM_BKPT;
-  }
+  memset(aSlot, 0, sizeof(aSlot));
 
   while( p ){
     SorterRecord *pNext;
@@ -98195,13 +100025,12 @@ static int vdbeSorterSort(SortSubtask *pTask, SorterList *pList){
   }
 
   p = 0;
-  for(i=0; i<64; i++){
+  for(i=0; i<ArraySize(aSlot); i++){
     if( aSlot[i]==0 ) continue;
     p = p ? vdbeSorterMerge(pTask, p, aSlot[i]) : aSlot[i];
   }
   pList->pList = p;
 
-  sqlite3_free(aSlot);
   assert( pTask->pUnpacked->errCode==SQLITE_OK
        || pTask->pUnpacked->errCode==SQLITE_NOMEM
   );
@@ -98539,7 +100368,7 @@ SQLITE_PRIVATE int sqlite3VdbeSorterWrite(
 
   assert( pCsr->eCurType==CURTYPE_SORTER );
   pSorter = pCsr->uc.pSorter;
-  getVarint32((const u8*)&pVal->z[1], t);
+  getVarint32NR((const u8*)&pVal->z[1], t);
   if( t>0 && t<10 && t!=7 ){
     pSorter->typeMask &= SORTER_TYPE_INTEGER;
   }else if( t>10 && (t & 0x01) ){
@@ -99526,6 +101355,433 @@ SQLITE_PRIVATE int sqlite3VdbeSorterCompare(
 }
 
 /************** End of vdbesort.c ********************************************/
+/************** Begin file vdbevtab.c ****************************************/
+/*
+** 2020-03-23
+**
+** The author disclaims copyright to this source code.  In place of
+** a legal notice, here is a blessing:
+**
+**    May you do good and not evil.
+**    May you find forgiveness for yourself and forgive others.
+**    May you share freely, never taking more than you give.
+**
+*************************************************************************
+**
+** This file implements virtual-tables for examining the bytecode content
+** of a prepared statement.
+*/
+/* #include "sqliteInt.h" */
+#if defined(SQLITE_ENABLE_BYTECODE_VTAB) && !defined(SQLITE_OMIT_VIRTUALTABLE)
+/* #include "vdbeInt.h" */
+
+/* An instance of the bytecode() table-valued function.
+*/
+typedef struct bytecodevtab bytecodevtab;
+struct bytecodevtab {
+  sqlite3_vtab base;     /* Base class - must be first */
+  sqlite3 *db;           /* Database connection */
+  int bTablesUsed;       /* 2 for tables_used().  0 for bytecode(). */
+};
+
+/* A cursor for scanning through the bytecode
+*/
+typedef struct bytecodevtab_cursor bytecodevtab_cursor;
+struct bytecodevtab_cursor {
+  sqlite3_vtab_cursor base;  /* Base class - must be first */
+  sqlite3_stmt *pStmt;       /* The statement whose bytecode is displayed */
+  int iRowid;                /* The rowid of the output table */
+  int iAddr;                 /* Address */
+  int needFinalize;          /* Cursors owns pStmt and must finalize it */
+  int showSubprograms;       /* Provide a listing of subprograms */
+  Op *aOp;                   /* Operand array */
+  char *zP4;                 /* Rendered P4 value */
+  const char *zType;         /* tables_used.type */
+  const char *zSchema;       /* tables_used.schema */
+  const char *zName;         /* tables_used.name */
+  Mem sub;                   /* Subprograms */
+};
+
+/*
+** Create a new bytecode() table-valued function.
+*/
+static int bytecodevtabConnect(
+  sqlite3 *db,
+  void *pAux,
+  int argc, const char *const*argv,
+  sqlite3_vtab **ppVtab,
+  char **pzErr
+){
+  bytecodevtab *pNew;
+  int rc;
+  int isTabUsed = pAux!=0;
+  const char *azSchema[2] = {
+    /* bytecode() schema */
+    "CREATE TABLE x("
+      "addr INT,"
+      "opcode TEXT,"
+      "p1 INT,"
+      "p2 INT,"
+      "p3 INT,"
+      "p4 TEXT,"
+      "p5 INT,"
+      "comment TEXT,"
+      "subprog TEXT,"
+      "stmt HIDDEN"
+    ");",
+
+    /* Tables_used() schema */
+    "CREATE TABLE x("
+      "type TEXT,"
+      "schema TEXT,"
+      "name TEXT,"
+      "wr INT,"
+      "subprog TEXT,"
+      "stmt HIDDEN"
+   ");"
+  };
+
+  rc = sqlite3_declare_vtab(db, azSchema[isTabUsed]);
+  if( rc==SQLITE_OK ){
+    pNew = sqlite3_malloc( sizeof(*pNew) );
+    *ppVtab = (sqlite3_vtab*)pNew;
+    if( pNew==0 ) return SQLITE_NOMEM;
+    memset(pNew, 0, sizeof(*pNew));
+    pNew->db = db;
+    pNew->bTablesUsed = isTabUsed*2;
+  }
+  return rc;
+}
+
+/*
+** This method is the destructor for bytecodevtab objects.
+*/
+static int bytecodevtabDisconnect(sqlite3_vtab *pVtab){
+  bytecodevtab *p = (bytecodevtab*)pVtab;
+  sqlite3_free(p);
+  return SQLITE_OK;
+}
+
+/*
+** Constructor for a new bytecodevtab_cursor object.
+*/
+static int bytecodevtabOpen(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){
+  bytecodevtab *pVTab = (bytecodevtab*)p;
+  bytecodevtab_cursor *pCur;
+  pCur = sqlite3_malloc( sizeof(*pCur) );
+  if( pCur==0 ) return SQLITE_NOMEM;
+  memset(pCur, 0, sizeof(*pCur));
+  sqlite3VdbeMemInit(&pCur->sub, pVTab->db, 1);
+  *ppCursor = &pCur->base;
+  return SQLITE_OK;
+}
+
+/*
+** Clear all internal content from a bytecodevtab cursor.
+*/
+static void bytecodevtabCursorClear(bytecodevtab_cursor *pCur){
+  sqlite3_free(pCur->zP4);
+  pCur->zP4 = 0;
+  sqlite3VdbeMemRelease(&pCur->sub);
+  sqlite3VdbeMemSetNull(&pCur->sub);
+  if( pCur->needFinalize ){
+    sqlite3_finalize(pCur->pStmt);
+  }
+  pCur->pStmt = 0;
+  pCur->needFinalize = 0;
+  pCur->zType = 0;
+  pCur->zSchema = 0;
+  pCur->zName = 0;
+}
+
+/*
+** Destructor for a bytecodevtab_cursor.
+*/
+static int bytecodevtabClose(sqlite3_vtab_cursor *cur){
+  bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur;
+  bytecodevtabCursorClear(pCur);
+  sqlite3_free(pCur);
+  return SQLITE_OK;
+}
+
+
+/*
+** Advance a bytecodevtab_cursor to its next row of output.
+*/
+static int bytecodevtabNext(sqlite3_vtab_cursor *cur){
+  bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur;
+  bytecodevtab *pTab = (bytecodevtab*)cur->pVtab;
+  int rc;
+  if( pCur->zP4 ){
+    sqlite3_free(pCur->zP4);
+    pCur->zP4 = 0;
+  }
+  if( pCur->zName ){
+    pCur->zName = 0;
+    pCur->zType = 0;
+    pCur->zSchema = 0;
+  }
+  rc = sqlite3VdbeNextOpcode(
+           (Vdbe*)pCur->pStmt,
+           pCur->showSubprograms ? &pCur->sub : 0,
+           pTab->bTablesUsed,
+           &pCur->iRowid,
+           &pCur->iAddr,
+           &pCur->aOp);
+  if( rc!=SQLITE_OK ){
+    sqlite3VdbeMemSetNull(&pCur->sub);
+    pCur->aOp = 0;
+  }
+  return SQLITE_OK;
+}
+
+/*
+** Return TRUE if the cursor has been moved off of the last
+** row of output.
+*/
+static int bytecodevtabEof(sqlite3_vtab_cursor *cur){
+  bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur;
+  return pCur->aOp==0;
+}
+
+/*
+** Return values of columns for the row at which the bytecodevtab_cursor
+** is currently pointing.
+*/
+static int bytecodevtabColumn(
+  sqlite3_vtab_cursor *cur,   /* The cursor */
+  sqlite3_context *ctx,       /* First argument to sqlite3_result_...() */
+  int i                       /* Which column to return */
+){
+  bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur;
+  bytecodevtab *pVTab = (bytecodevtab*)cur->pVtab;
+  Op *pOp = pCur->aOp + pCur->iAddr;
+  if( pVTab->bTablesUsed ){
+    if( i==4 ){
+      i = 8;
+    }else{
+      if( i<=2 && pCur->zType==0 ){
+        Schema *pSchema;
+        HashElem *k;
+        int iDb = pOp->p3;
+        Pgno iRoot = (Pgno)pOp->p2;
+        sqlite3 *db = pVTab->db;
+        pSchema = db->aDb[iDb].pSchema;
+        pCur->zSchema = db->aDb[iDb].zDbSName;
+        for(k=sqliteHashFirst(&pSchema->tblHash); k; k=sqliteHashNext(k)){
+          Table *pTab = (Table*)sqliteHashData(k);
+          if( !IsVirtual(pTab) && pTab->tnum==iRoot ){
+            pCur->zName = pTab->zName;
+            pCur->zType = "table";
+            break;
+          }
+        }
+        if( pCur->zName==0 ){
+          for(k=sqliteHashFirst(&pSchema->idxHash); k; k=sqliteHashNext(k)){
+            Index *pIdx = (Index*)sqliteHashData(k);
+            if( pIdx->tnum==iRoot ){
+              pCur->zName = pIdx->zName;
+              pCur->zType = "index";
+            }
+          }
+        }
+      }
+      i += 10;
+    }
+  }
+  switch( i ){
+    case 0:   /* addr */
+      sqlite3_result_int(ctx, pCur->iAddr);
+      break;
+    case 1:   /* opcode */
+      sqlite3_result_text(ctx, (char*)sqlite3OpcodeName(pOp->opcode),
+                          -1, SQLITE_STATIC);
+      break;
+    case 2:   /* p1 */
+      sqlite3_result_int(ctx, pOp->p1);
+      break;
+    case 3:   /* p2 */
+      sqlite3_result_int(ctx, pOp->p2);
+      break;
+    case 4:   /* p3 */
+      sqlite3_result_int(ctx, pOp->p3);
+      break;
+    case 5:   /* p4 */
+    case 7:   /* comment */
+      if( pCur->zP4==0 ){
+        pCur->zP4 = sqlite3VdbeDisplayP4(pVTab->db, pOp);
+      }
+      if( i==5 ){
+        sqlite3_result_text(ctx, pCur->zP4, -1, SQLITE_STATIC);
+      }else{
+#ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS
+        char *zCom = sqlite3VdbeDisplayComment(pVTab->db, pOp, pCur->zP4);
+        sqlite3_result_text(ctx, zCom, -1, sqlite3_free);
+#endif
+      }
+      break;
+    case 6:     /* p5 */
+      sqlite3_result_int(ctx, pOp->p5);
+      break;
+    case 8: {   /* subprog */
+      Op *aOp = pCur->aOp;
+      assert( aOp[0].opcode==OP_Init );
+      assert( aOp[0].p4.z==0 || strncmp(aOp[0].p4.z,"-" "- ",3)==0 );
+      if( pCur->iRowid==pCur->iAddr+1 ){
+        break;  /* Result is NULL for the main program */
+      }else if( aOp[0].p4.z!=0 ){
+         sqlite3_result_text(ctx, aOp[0].p4.z+3, -1, SQLITE_STATIC);
+      }else{
+         sqlite3_result_text(ctx, "(FK)", 4, SQLITE_STATIC);
+      }
+      break;
+    }
+    case 10:  /* tables_used.type */
+      sqlite3_result_text(ctx, pCur->zType, -1, SQLITE_STATIC);
+      break;
+    case 11:  /* tables_used.schema */
+      sqlite3_result_text(ctx, pCur->zSchema, -1, SQLITE_STATIC);
+      break;
+    case 12:  /* tables_used.name */
+      sqlite3_result_text(ctx, pCur->zName, -1, SQLITE_STATIC);
+      break;
+    case 13:  /* tables_used.wr */
+      sqlite3_result_int(ctx, pOp->opcode==OP_OpenWrite);
+      break;
+  }
+  return SQLITE_OK;
+}
+
+/*
+** Return the rowid for the current row.  In this implementation, the
+** rowid is the same as the output value.
+*/
+static int bytecodevtabRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){
+  bytecodevtab_cursor *pCur = (bytecodevtab_cursor*)cur;
+  *pRowid = pCur->iRowid;
+  return SQLITE_OK;
+}
+
+/*
+** Initialize a cursor.
+**
+**    idxNum==0     means show all subprograms
+**    idxNum==1     means show only the main bytecode and omit subprograms.
+*/
+static int bytecodevtabFilter(
+  sqlite3_vtab_cursor *pVtabCursor,
+  int idxNum, const char *idxStr,
+  int argc, sqlite3_value **argv
+){
+  bytecodevtab_cursor *pCur = (bytecodevtab_cursor *)pVtabCursor;
+  bytecodevtab *pVTab = (bytecodevtab *)pVtabCursor->pVtab;
+  int rc = SQLITE_OK;
+
+  bytecodevtabCursorClear(pCur);
+  pCur->iRowid = 0;
+  pCur->iAddr = 0;
+  pCur->showSubprograms = idxNum==0;
+  assert( argc==1 );
+  if( sqlite3_value_type(argv[0])==SQLITE_TEXT ){
+    const char *zSql = (const char*)sqlite3_value_text(argv[0]);
+    if( zSql==0 ){
+      rc = SQLITE_NOMEM;
+    }else{
+      rc = sqlite3_prepare_v2(pVTab->db, zSql, -1, &pCur->pStmt, 0);
+      pCur->needFinalize = 1;
+    }
+  }else{
+    pCur->pStmt = (sqlite3_stmt*)sqlite3_value_pointer(argv[0],"stmt-pointer");
+  }
+  if( pCur->pStmt==0 ){
+    pVTab->base.zErrMsg = sqlite3_mprintf(
+       "argument to %s() is not a valid SQL statement",
+       pVTab->bTablesUsed ? "tables_used" : "bytecode"
+    );
+    rc = SQLITE_ERROR;
+  }else{
+    bytecodevtabNext(pVtabCursor);
+  }
+  return rc;
+}
+
+/*
+** We must have a single stmt=? constraint that will be passed through
+** into the xFilter method.  If there is no valid stmt=? constraint,
+** then return an SQLITE_CONSTRAINT error.
+*/
+static int bytecodevtabBestIndex(
+  sqlite3_vtab *tab,
+  sqlite3_index_info *pIdxInfo
+){
+  int i;
+  int rc = SQLITE_CONSTRAINT;
+  struct sqlite3_index_constraint *p;
+  bytecodevtab *pVTab = (bytecodevtab*)tab;
+  int iBaseCol = pVTab->bTablesUsed ? 4 : 8;
+  pIdxInfo->estimatedCost = (double)100;
+  pIdxInfo->estimatedRows = 100;
+  pIdxInfo->idxNum = 0;
+  for(i=0, p=pIdxInfo->aConstraint; i<pIdxInfo->nConstraint; i++, p++){
+    if( p->usable==0 ) continue;
+    if( p->op==SQLITE_INDEX_CONSTRAINT_EQ && p->iColumn==iBaseCol+1 ){
+      rc = SQLITE_OK;
+      pIdxInfo->aConstraintUsage[i].omit = 1;
+      pIdxInfo->aConstraintUsage[i].argvIndex = 1;
+    }
+    if( p->op==SQLITE_INDEX_CONSTRAINT_ISNULL && p->iColumn==iBaseCol ){
+      pIdxInfo->aConstraintUsage[i].omit = 1;
+      pIdxInfo->idxNum = 1;
+    }
+  }
+  return rc;
+}
+
+/*
+** This following structure defines all the methods for the
+** virtual table.
+*/
+static sqlite3_module bytecodevtabModule = {
+  /* iVersion    */ 0,
+  /* xCreate     */ 0,
+  /* xConnect    */ bytecodevtabConnect,
+  /* xBestIndex  */ bytecodevtabBestIndex,
+  /* xDisconnect */ bytecodevtabDisconnect,
+  /* xDestroy    */ 0,
+  /* xOpen       */ bytecodevtabOpen,
+  /* xClose      */ bytecodevtabClose,
+  /* xFilter     */ bytecodevtabFilter,
+  /* xNext       */ bytecodevtabNext,
+  /* xEof        */ bytecodevtabEof,
+  /* xColumn     */ bytecodevtabColumn,
+  /* xRowid      */ bytecodevtabRowid,
+  /* xUpdate     */ 0,
+  /* xBegin      */ 0,
+  /* xSync       */ 0,
+  /* xCommit     */ 0,
+  /* xRollback   */ 0,
+  /* xFindMethod */ 0,
+  /* xRename     */ 0,
+  /* xSavepoint  */ 0,
+  /* xRelease    */ 0,
+  /* xRollbackTo */ 0,
+  /* xShadowName */ 0
+};
+
+
+SQLITE_PRIVATE int sqlite3VdbeBytecodeVtabInit(sqlite3 *db){
+  int rc;
+  rc = sqlite3_create_module(db, "bytecode", &bytecodevtabModule, 0);
+  if( rc==SQLITE_OK ){
+    rc = sqlite3_create_module(db, "tables_used", &bytecodevtabModule, &db);
+  }
+  return rc;
+}
+#elif defined(SQLITE_ENABLE_BYTECODE_VTAB)
+SQLITE_PRIVATE int sqlite3VdbeBytecodeVtabInit(sqlite3 *db){ return SQLITE_OK; }
+#endif /* SQLITE_ENABLE_BYTECODE_VTAB */
+
+/************** End of vdbevtab.c ********************************************/
 /************** Begin file memjournal.c **************************************/
 /*
 ** 2008 October 7
@@ -99895,7 +102151,7 @@ SQLITE_PRIVATE int sqlite3JournalOpen(
     assert( MEMJOURNAL_DFLT_FILECHUNKSIZE==fileChunkSize(p->nChunkSize) );
   }
 
-  p->pMethod = (const sqlite3_io_methods*)&MemJournalMethods;
+  pJfd->pMethods = (const sqlite3_io_methods*)&MemJournalMethods;
   p->nSpill = nSpill;
   p->flags = flags;
   p->zJournal = zName;
@@ -99921,7 +102177,7 @@ SQLITE_PRIVATE void sqlite3MemJournalOpen(sqlite3_file *pJfd){
 SQLITE_PRIVATE int sqlite3JournalCreate(sqlite3_file *pJfd){
   int rc = SQLITE_OK;
   MemJournal *p = (MemJournal*)pJfd;
-  if( p->pMethod==&MemJournalMethods && (
+  if( pJfd->pMethods==&MemJournalMethods && (
 #ifdef SQLITE_ENABLE_ATOMIC_WRITE
      p->nSpill>0
 #else
@@ -100034,8 +102290,8 @@ static SQLITE_NOINLINE int walkExpr(Walker *pWalker, Expr *pExpr){
     rc = pWalker->xExprCallback(pWalker, pExpr);
     if( rc ) return rc & WRC_Abort;
     if( !ExprHasProperty(pExpr,(EP_TokenOnly|EP_Leaf)) ){
+      assert( pExpr->x.pList==0 || pExpr->pRight==0 );
       if( pExpr->pLeft && walkExpr(pWalker, pExpr->pLeft) ) return WRC_Abort;
-       assert( pExpr->x.pList==0 || pExpr->pRight==0 );
       if( pExpr->pRight ){
         assert( !ExprHasProperty(pExpr, EP_WinFunc) );
         pExpr = pExpr->pRight;
@@ -100117,15 +102373,16 @@ SQLITE_PRIVATE int sqlite3WalkSelectFrom(Walker *pWalker, Select *p){
   struct SrcList_item *pItem;
 
   pSrc = p->pSrc;
-  assert( pSrc!=0 );
-  for(i=pSrc->nSrc, pItem=pSrc->a; i>0; i--, pItem++){
-    if( pItem->pSelect && sqlite3WalkSelect(pWalker, pItem->pSelect) ){
-      return WRC_Abort;
-    }
-    if( pItem->fg.isTabFunc
-     && sqlite3WalkExprList(pWalker, pItem->u1.pFuncArg)
-    ){
-      return WRC_Abort;
+  if( pSrc ){
+    for(i=pSrc->nSrc, pItem=pSrc->a; i>0; i--, pItem++){
+      if( pItem->pSelect && sqlite3WalkSelect(pWalker, pItem->pSelect) ){
+        return WRC_Abort;
+      }
+      if( pItem->fg.isTabFunc
+       && sqlite3WalkExprList(pWalker, pItem->u1.pFuncArg)
+      ){
+        return WRC_Abort;
+      }
     }
   }
   return WRC_Continue;
@@ -100168,6 +102425,43 @@ SQLITE_PRIVATE int sqlite3WalkSelect(Walker *pWalker, Select *p){
   return WRC_Continue;
 }
 
+/* Increase the walkerDepth when entering a subquery, and
+** descrease when leaving the subquery.
+*/
+SQLITE_PRIVATE int sqlite3WalkerDepthIncrease(Walker *pWalker, Select *pSelect){
+  UNUSED_PARAMETER(pSelect);
+  pWalker->walkerDepth++;
+  return WRC_Continue;
+}
+SQLITE_PRIVATE void sqlite3WalkerDepthDecrease(Walker *pWalker, Select *pSelect){
+  UNUSED_PARAMETER(pSelect);
+  pWalker->walkerDepth--;
+}
+
+
+/*
+** No-op routine for the parse-tree walker.
+**
+** When this routine is the Walker.xExprCallback then expression trees
+** are walked without any actions being taken at each node.  Presumably,
+** when this routine is used for Walker.xExprCallback then
+** Walker.xSelectCallback is set to do something useful for every
+** subquery in the parser tree.
+*/
+SQLITE_PRIVATE int sqlite3ExprWalkNoop(Walker *NotUsed, Expr *NotUsed2){
+  UNUSED_PARAMETER2(NotUsed, NotUsed2);
+  return WRC_Continue;
+}
+
+/*
+** No-op routine for the parse-tree walker for SELECT statements.
+** subquery in the parser tree.
+*/
+SQLITE_PRIVATE int sqlite3SelectWalkNoop(Walker *NotUsed, Select *NotUsed2){
+  UNUSED_PARAMETER2(NotUsed, NotUsed2);
+  return WRC_Continue;
+}
+
 /************** End of walker.c **********************************************/
 /************** Begin file resolve.c *****************************************/
 /*
@@ -100189,6 +102483,11 @@ SQLITE_PRIVATE int sqlite3WalkSelect(Walker *pWalker, Select *p){
 /* #include "sqliteInt.h" */
 
 /*
+** Magic table number to mean the EXCLUDED table in an UPSERT statement.
+*/
+#define EXCLUDED_TABLE_NUMBER  2
+
+/*
 ** Walk the expression tree pExpr and increase the aggregate function
 ** depth (the Expr.op2 field) by N on every TK_AGG_FUNCTION node.
 ** This needs to occur when copying a TK_AGG_FUNCTION node from an
@@ -100196,6 +102495,8 @@ SQLITE_PRIVATE int sqlite3WalkSelect(Walker *pWalker, Select *p){
 **
 ** incrAggFunctionDepth(pExpr,n) is the main routine.  incrAggDepth(..)
 ** is a helper function - a callback for the tree walker.
+**
+** See also the sqlite3WindowExtraAggFuncDepth() routine in window.c
 */
 static int incrAggDepth(Walker *pWalker, Expr *pExpr){
   if( pExpr->op==TK_AGG_FUNCTION ) pExpr->op2 += pWalker->u.n;
@@ -100304,13 +102605,16 @@ static int nameInUsingClause(IdList *pUsing, const char *zCol){
 ** and zCol.  If any of zDb, zTab, and zCol are NULL then those fields will
 ** match anything.
 */
-SQLITE_PRIVATE int sqlite3MatchSpanName(
-  const char *zSpan,
+SQLITE_PRIVATE int sqlite3MatchEName(
+  const struct ExprList_item *pItem,
   const char *zCol,
   const char *zTab,
   const char *zDb
 ){
   int n;
+  const char *zSpan;
+  if( pItem->eEName!=ENAME_TAB ) return 0;
+  zSpan = pItem->zEName;
   for(n=0; ALWAYS(zSpan[n]) && zSpan[n]!='.'; n++){}
   if( zDb && (sqlite3StrNICmp(zSpan, zDb, n)!=0 || zDb[n]!=0) ){
     return 0;
@@ -100345,6 +102649,31 @@ static int areDoubleQuotedStringsEnabled(sqlite3 *db, NameContext *pTopNC){
 }
 
 /*
+** The argument is guaranteed to be a non-NULL Expr node of type TK_COLUMN.
+** return the appropriate colUsed mask.
+*/
+SQLITE_PRIVATE Bitmask sqlite3ExprColUsed(Expr *pExpr){
+  int n;
+  Table *pExTab;
+
+  n = pExpr->iColumn;
+  pExTab = pExpr->y.pTab;
+  assert( pExTab!=0 );
+  if( (pExTab->tabFlags & TF_HasGenerated)!=0
+   && (pExTab->aCol[n].colFlags & COLFLAG_GENERATED)!=0
+  ){
+    testcase( pExTab->nCol==BMS-1 );
+    testcase( pExTab->nCol==BMS );
+    return pExTab->nCol>=BMS ? ALLBITS : MASKBIT(pExTab->nCol)-1;
+  }else{
+    testcase( n==BMS-1 );
+    testcase( n==BMS );
+    if( n>=BMS ) n = BMS-1;
+    return ((Bitmask)1)<<n;
+  }
+}
+
+/*
 ** Given the name of a column of the form X.Y.Z or Y.Z or just Z, look up
 ** that name in the set of source tables in pSrcList and make the pExpr
 ** expression node refer back to that source column.  The following changes
@@ -100421,6 +102750,12 @@ static int lookupName(
           break;
         }
       }
+      if( i==db->nDb && sqlite3StrICmp("main", zDb)==0 ){
+        /* This branch is taken when the main database has been renamed
+        ** using SQLITE_DBCONFIG_MAINDBNAME. */
+        pSchema = db->aDb[0].pSchema;
+        zDb = db->aDb[0].zDbSName;
+      }
     }
   }
 
@@ -100432,6 +102767,7 @@ static int lookupName(
 
     if( pSrcList ){
       for(i=0, pItem=pSrcList->a; i<pSrcList->nSrc; i++, pItem++){
+        u8 hCol;
         pTab = pItem->pTab;
         assert( pTab!=0 && pTab->zName!=0 );
         assert( pTab->nCol>0 );
@@ -100439,7 +102775,7 @@ static int lookupName(
           int hit = 0;
           pEList = pItem->pSelect->pEList;
           for(j=0; j<pEList->nExpr; j++){
-            if( sqlite3MatchSpanName(pEList->a[j].zSpan, zCol, zTab, zDb) ){
+            if( sqlite3MatchEName(&pEList->a[j], zCol, zTab, zDb) ){
               cnt++;
               cntTab = 2;
               pMatch = pItem;
@@ -100465,8 +102801,9 @@ static int lookupName(
         if( 0==(cntTab++) ){
           pMatch = pItem;
         }
+        hCol = sqlite3StrIHash(zCol);
         for(j=0, pCol=pTab->aCol; j<pTab->nCol; j++, pCol++){
-          if( sqlite3StrICmp(pCol->zName, zCol)==0 ){
+          if( pCol->hName==hCol && sqlite3StrICmp(pCol->zName, zCol)==0 ){
             /* If there has been exactly one prior match and this match
             ** is for the right-hand table of a NATURAL JOIN or is in a
             ** USING clause, then skip this match.
@@ -100520,17 +102857,18 @@ static int lookupName(
         Upsert *pUpsert = pNC->uNC.pUpsert;
         if( pUpsert && sqlite3StrICmp("excluded",zTab)==0 ){
           pTab = pUpsert->pUpsertSrc->a[0].pTab;
-          pExpr->iTable = 2;
+          pExpr->iTable = EXCLUDED_TABLE_NUMBER;
         }
       }
 #endif /* SQLITE_OMIT_UPSERT */
 
       if( pTab ){
         int iCol;
+        u8 hCol = sqlite3StrIHash(zCol);
         pSchema = pTab->pSchema;
         cntTab++;
         for(iCol=0, pCol=pTab->aCol; iCol<pTab->nCol; iCol++, pCol++){
-          if( sqlite3StrICmp(pCol->zName, zCol)==0 ){
+          if( pCol->hName==hCol && sqlite3StrICmp(pCol->zName, zCol)==0 ){
             if( iCol==pTab->iPKey ){
               iCol = -1;
             }
@@ -100544,14 +102882,15 @@ static int lookupName(
         if( iCol<pTab->nCol ){
           cnt++;
 #ifndef SQLITE_OMIT_UPSERT
-          if( pExpr->iTable==2 ){
+          if( pExpr->iTable==EXCLUDED_TABLE_NUMBER ){
             testcase( iCol==(-1) );
             if( IN_RENAME_OBJECT ){
               pExpr->iColumn = iCol;
               pExpr->y.pTab = pTab;
               eNewExprOp = TK_COLUMN;
             }else{
-              pExpr->iTable = pNC->uNC.pUpsert->regData + iCol;
+              pExpr->iTable = pNC->uNC.pUpsert->regData +
+                 sqlite3TableColumnToStorage(pTab, iCol);
               eNewExprOp = TK_REGISTER;
               ExprSetProperty(pExpr, EP_Alias);
             }
@@ -100586,7 +102925,7 @@ static int lookupName(
     if( cnt==0
      && cntTab==1
      && pMatch
-     && (pNC->ncFlags & NC_IdxExpr)==0
+     && (pNC->ncFlags & (NC_IdxExpr|NC_GenCol))==0
      && sqlite3IsRowid(zCol)
      && VisibleRowid(pMatch->pTab)
     ){
@@ -100620,8 +102959,10 @@ static int lookupName(
       pEList = pNC->uNC.pEList;
       assert( pEList!=0 );
       for(j=0; j<pEList->nExpr; j++){
-        char *zAs = pEList->a[j].zName;
-        if( zAs!=0 && sqlite3StrICmp(zAs, zCol)==0 ){
+        char *zAs = pEList->a[j].zEName;
+        if( pEList->a[j].eEName==ENAME_NAME
+         && sqlite3_stricmp(zAs, zCol)==0
+        ){
           Expr *pOrig;
           assert( pExpr->pLeft==0 && pExpr->pRight==0 );
           assert( pExpr->x.pList==0 );
@@ -100631,7 +102972,9 @@ static int lookupName(
             sqlite3ErrorMsg(pParse, "misuse of aliased aggregate %s", zAs);
             return WRC_Abort;
           }
-          if( (pNC->ncFlags&NC_AllowWin)==0 && ExprHasProperty(pOrig, EP_Win) ){
+          if( ExprHasProperty(pOrig, EP_Win)
+           && ((pNC->ncFlags&NC_AllowWin)==0 || pNC!=pTopNC )
+          ){
             sqlite3ErrorMsg(pParse, "misuse of aliased window function %s",zAs);
             return WRC_Abort;
           }
@@ -100723,18 +103066,20 @@ static int lookupName(
 
   /* If a column from a table in pSrcList is referenced, then record
   ** this fact in the pSrcList.a[].colUsed bitmask.  Column 0 causes
-  ** bit 0 to be set.  Column 1 sets bit 1.  And so forth.  If the
-  ** column number is greater than the number of bits in the bitmask
-  ** then set the high-order bit of the bitmask.
+  ** bit 0 to be set.  Column 1 sets bit 1.  And so forth.  Bit 63 is
+  ** set if the 63rd or any subsequent column is used.
+  **
+  ** The colUsed mask is an optimization used to help determine if an
+  ** index is a covering index.  The correct answer is still obtained
+  ** if the mask contains extra set bits.  However, it is important to
+  ** avoid setting bits beyond the maximum column number of the table.
+  ** (See ticket [b92e5e8ec2cdbaa1]).
+  **
+  ** If a generated column is referenced, set bits for every column
+  ** of the table.
   */
   if( pExpr->iColumn>=0 && pMatch!=0 ){
-    int n = pExpr->iColumn;
-    testcase( n==BMS-1 );
-    if( n>=BMS ){
-      n = BMS-1;
-    }
-    assert( pMatch->iCursor==pExpr->iTable );
-    pMatch->colUsed |= ((Bitmask)1)<<n;
+    pMatch->colUsed |= sqlite3ExprColUsed(pExpr);
   }
 
   /* Clean up and return
@@ -100773,15 +103118,23 @@ SQLITE_PRIVATE Expr *sqlite3CreateColumnExpr(sqlite3 *db, SrcList *pSrc, int iSr
   Expr *p = sqlite3ExprAlloc(db, TK_COLUMN, 0, 0);
   if( p ){
     struct SrcList_item *pItem = &pSrc->a[iSrc];
-    p->y.pTab = pItem->pTab;
+    Table *pTab = p->y.pTab = pItem->pTab;
     p->iTable = pItem->iCursor;
     if( p->y.pTab->iPKey==iCol ){
       p->iColumn = -1;
     }else{
       p->iColumn = (ynVar)iCol;
-      testcase( iCol==BMS );
-      testcase( iCol==BMS-1 );
-      pItem->colUsed |= ((Bitmask)1)<<(iCol>=BMS ? BMS-1 : iCol);
+      if( (pTab->tabFlags & TF_HasGenerated)!=0
+       && (pTab->aCol[iCol].colFlags & COLFLAG_GENERATED)!=0
+      ){
+        testcase( pTab->nCol==63 );
+        testcase( pTab->nCol==64 );
+        pItem->colUsed = pTab->nCol>=64 ? ALLBITS : MASKBIT(pTab->nCol)-1;
+      }else{
+        testcase( iCol==BMS );
+        testcase( iCol==BMS-1 );
+        pItem->colUsed |= ((Bitmask)1)<<(iCol>=BMS ? BMS-1 : iCol);
+      }
     }
   }
   return p;
@@ -100790,23 +103143,39 @@ SQLITE_PRIVATE Expr *sqlite3CreateColumnExpr(sqlite3 *db, SrcList *pSrc, int iSr
 /*
 ** Report an error that an expression is not valid for some set of
 ** pNC->ncFlags values determined by validMask.
-*/
-static void notValid(
-  Parse *pParse,       /* Leave error message here */
-  NameContext *pNC,    /* The name context */
-  const char *zMsg,    /* Type of error */
-  int validMask        /* Set of contexts for which prohibited */
-){
-  assert( (validMask&~(NC_IsCheck|NC_PartIdx|NC_IdxExpr))==0 );
-  if( (pNC->ncFlags & validMask)!=0 ){
-    const char *zIn = "partial index WHERE clauses";
-    if( pNC->ncFlags & NC_IdxExpr )      zIn = "index expressions";
+**
+** static void notValid(
+**   Parse *pParse,       // Leave error message here
+**   NameContext *pNC,    // The name context
+**   const char *zMsg,    // Type of error
+**   int validMask,       // Set of contexts for which prohibited
+**   Expr *pExpr          // Invalidate this expression on error
+** ){...}
+**
+** As an optimization, since the conditional is almost always false
+** (because errors are rare), the conditional is moved outside of the
+** function call using a macro.
+*/
+static void notValidImpl(
+   Parse *pParse,       /* Leave error message here */
+   NameContext *pNC,    /* The name context */
+   const char *zMsg,    /* Type of error */
+   Expr *pExpr          /* Invalidate this expression on error */
+){
+  const char *zIn = "partial index WHERE clauses";
+  if( pNC->ncFlags & NC_IdxExpr )      zIn = "index expressions";
 #ifndef SQLITE_OMIT_CHECK
-    else if( pNC->ncFlags & NC_IsCheck ) zIn = "CHECK constraints";
+  else if( pNC->ncFlags & NC_IsCheck ) zIn = "CHECK constraints";
 #endif
-    sqlite3ErrorMsg(pParse, "%s prohibited in %s", zMsg, zIn);
-  }
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+  else if( pNC->ncFlags & NC_GenCol ) zIn = "generated columns";
+#endif
+  sqlite3ErrorMsg(pParse, "%s prohibited in %s", zMsg, zIn);
+  if( pExpr ) pExpr->op = TK_NULL;
 }
+#define sqlite3ResolveNotValid(P,N,M,X,E) \
+  assert( ((X)&~(NC_IsCheck|NC_PartIdx|NC_IdxExpr|NC_GenCol))==0 ); \
+  if( ((N)->ncFlags & (X))!=0 ) notValidImpl(P,N,M,E);
 
 /*
 ** Expression p should encode a floating point value between 1.0 and 0.0.
@@ -100853,26 +103222,23 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
 #endif
   switch( pExpr->op ){
 
-#if defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) && !defined(SQLITE_OMIT_SUBQUERY)
     /* The special operator TK_ROW means use the rowid for the first
     ** column in the FROM clause.  This is used by the LIMIT and ORDER BY
-    ** clause processing on UPDATE and DELETE statements.
+    ** clause processing on UPDATE and DELETE statements, and by
+    ** UPDATE ... FROM statement processing.
     */
     case TK_ROW: {
       SrcList *pSrcList = pNC->pSrcList;
       struct SrcList_item *pItem;
-      assert( pSrcList && pSrcList->nSrc==1 );
+      assert( pSrcList && pSrcList->nSrc>=1 );
       pItem = pSrcList->a;
-      assert( HasRowid(pItem->pTab) && pItem->pTab->pSelect==0 );
       pExpr->op = TK_COLUMN;
       pExpr->y.pTab = pItem->pTab;
       pExpr->iTable = pItem->iCursor;
-      pExpr->iColumn = -1;
+      pExpr->iColumn--;
       pExpr->affExpr = SQLITE_AFF_INTEGER;
       break;
     }
-#endif /* defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT)
-          && !defined(SQLITE_OMIT_SUBQUERY) */
 
     /* A column name:                    ID
     ** Or table name and column name:    ID.ID
@@ -100895,7 +103261,10 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
         zColumn = pExpr->u.zToken;
       }else{
         Expr *pLeft = pExpr->pLeft;
-        notValid(pParse, pNC, "the \".\" operator", NC_IdxExpr);
+        testcase( pNC->ncFlags & NC_IdxExpr );
+        testcase( pNC->ncFlags & NC_GenCol );
+        sqlite3ResolveNotValid(pParse, pNC, "the \".\" operator",
+                               NC_IdxExpr|NC_GenCol, 0);
         pRight = pExpr->pRight;
         if( pRight->op==TK_ID ){
           zDb = 0;
@@ -100984,33 +103353,39 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
         if( pDef->funcFlags & (SQLITE_FUNC_CONSTANT|SQLITE_FUNC_SLOCHNG) ){
           /* For the purposes of the EP_ConstFunc flag, date and time
           ** functions and other functions that change slowly are considered
-          ** constant because they are constant for the duration of one query */
+          ** constant because they are constant for the duration of one query.
+          ** This allows them to be factored out of inner loops. */
           ExprSetProperty(pExpr,EP_ConstFunc);
         }
         if( (pDef->funcFlags & SQLITE_FUNC_CONSTANT)==0 ){
-          /* Date/time functions that use 'now', and other functions like
+          /* Clearly non-deterministic functions like random(), but also
+          ** date/time functions that use 'now', and other functions like
           ** sqlite_version() that might change over time cannot be used
-          ** in an index. */
-          notValid(pParse, pNC, "non-deterministic functions",
-                   NC_IdxExpr|NC_PartIdx);
+          ** in an index or generated column.  Curiously, they can be used
+          ** in a CHECK constraint.  SQLServer, MySQL, and PostgreSQL all
+          ** all this. */
+          sqlite3ResolveNotValid(pParse, pNC, "non-deterministic functions",
+                                 NC_IdxExpr|NC_PartIdx|NC_GenCol, 0);
+        }else{
+          assert( (NC_SelfRef & 0xff)==NC_SelfRef ); /* Must fit in 8 bits */
+          pExpr->op2 = pNC->ncFlags & NC_SelfRef;
+          if( pNC->ncFlags & NC_FromDDL ) ExprSetProperty(pExpr, EP_FromDDL);
         }
         if( (pDef->funcFlags & SQLITE_FUNC_INTERNAL)!=0
          && pParse->nested==0
-         && sqlite3Config.bInternalFunctions==0
+         && (pParse->db->mDbFlags & DBFLAG_InternalFunc)==0
         ){
           /* Internal-use-only functions are disallowed unless the
-          ** SQL is being compiled using sqlite3NestedParse() */
+          ** SQL is being compiled using sqlite3NestedParse() or
+          ** the SQLITE_TESTCTRL_INTERNAL_FUNCTIONS test-control has be
+          ** used to activate internal functionsn for testing purposes */
           no_such_func = 1;
           pDef = 0;
         }else
-        if( (pDef->funcFlags & SQLITE_FUNC_DIRECT)!=0
-         && ExprHasProperty(pExpr, EP_Indirect)
+        if( (pDef->funcFlags & (SQLITE_FUNC_DIRECT|SQLITE_FUNC_UNSAFE))!=0
          && !IN_RENAME_OBJECT
         ){
-          /* Functions tagged with SQLITE_DIRECTONLY may not be used
-          ** inside of triggers and views */
-          sqlite3ErrorMsg(pParse, "%s() prohibited in triggers and views",
-                          pDef->zName);
+          sqlite3ExprFunctionUsable(pParse, pExpr, pDef);
         }
       }
 
@@ -101091,7 +103466,7 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
           Select *pSel = pNC->pWinSelect;
           assert( pWin==pExpr->y.pWin );
           if( IN_RENAME_OBJECT==0 ){
-            sqlite3WindowUpdate(pParse, pSel->pWinDefn, pWin, pDef);
+            sqlite3WindowUpdate(pParse, pSel ? pSel->pWinDefn : 0, pWin, pDef);
           }
           sqlite3WalkExprList(pWalker, pWin->pPartition);
           sqlite3WalkExprList(pWalker, pWin->pOrderBy);
@@ -101136,7 +103511,12 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
       testcase( pExpr->op==TK_IN );
       if( ExprHasProperty(pExpr, EP_xIsSelect) ){
         int nRef = pNC->nRef;
-        notValid(pParse, pNC, "subqueries", NC_IsCheck|NC_PartIdx|NC_IdxExpr);
+        testcase( pNC->ncFlags & NC_IsCheck );
+        testcase( pNC->ncFlags & NC_PartIdx );
+        testcase( pNC->ncFlags & NC_IdxExpr );
+        testcase( pNC->ncFlags & NC_GenCol );
+        sqlite3ResolveNotValid(pParse, pNC, "subqueries",
+                 NC_IsCheck|NC_PartIdx|NC_IdxExpr|NC_GenCol, pExpr);
         sqlite3WalkSelect(pWalker, pExpr->x.pSelect);
         assert( pNC->nRef>=nRef );
         if( nRef!=pNC->nRef ){
@@ -101147,7 +103527,12 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
       break;
     }
     case TK_VARIABLE: {
-      notValid(pParse, pNC, "parameters", NC_IsCheck|NC_PartIdx|NC_IdxExpr);
+      testcase( pNC->ncFlags & NC_IsCheck );
+      testcase( pNC->ncFlags & NC_PartIdx );
+      testcase( pNC->ncFlags & NC_IdxExpr );
+      testcase( pNC->ncFlags & NC_GenCol );
+      sqlite3ResolveNotValid(pParse, pNC, "parameters",
+               NC_IsCheck|NC_PartIdx|NC_IdxExpr|NC_GenCol, pExpr);
       break;
     }
     case TK_IS:
@@ -101156,7 +103541,7 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
       assert( !ExprHasProperty(pExpr, EP_Reduced) );
       /* Handle special cases of "x IS TRUE", "x IS FALSE", "x IS NOT TRUE",
       ** and "x IS NOT FALSE". */
-      if( pRight->op==TK_ID ){
+      if( pRight && pRight->op==TK_ID ){
         int rc = resolveExprStep(pWalker, pRight);
         if( rc==WRC_Abort ) return WRC_Abort;
         if( pRight->op==TK_TRUEFALSE ){
@@ -101165,7 +103550,7 @@ static int resolveExprStep(Walker *pWalker, Expr *pExpr){
           return WRC_Continue;
         }
       }
-      /* Fall thru */
+      /* no break */ deliberate_fall_through
     }
     case TK_BETWEEN:
     case TK_EQ:
@@ -101229,8 +103614,9 @@ static int resolveAsName(
   if( pE->op==TK_ID ){
     char *zCol = pE->u.zToken;
     for(i=0; i<pEList->nExpr; i++){
-      char *zAs = pEList->a[i].zName;
-      if( zAs!=0 && sqlite3StrICmp(zAs, zCol)==0 ){
+      if( pEList->a[i].eEName==ENAME_NAME
+       && sqlite3_stricmp(pEList->a[i].zEName, zCol)==0
+      ){
         return i+1;
       }
     }
@@ -101281,7 +103667,7 @@ static int resolveOrderByTermToExprList(
   nc.nErr = 0;
   db = pParse->db;
   savedSuppErr = db->suppressErr;
-  db->suppressErr = 1;
+  if( IN_RENAME_OBJECT==0 ) db->suppressErr = 1;
   rc = sqlite3ResolveExprNames(&nc, pE);
   db->suppressErr = savedSuppErr;
   if( rc ) return 0;
@@ -101916,11 +104302,41 @@ SQLITE_PRIVATE int sqlite3ResolveExprListNames(
   ExprList *pList         /* The expression list to be analyzed. */
 ){
   int i;
-  if( pList ){
-    for(i=0; i<pList->nExpr; i++){
-      if( sqlite3ResolveExprNames(pNC, pList->a[i].pExpr) ) return WRC_Abort;
+  int savedHasAgg = 0;
+  Walker w;
+  if( pList==0 ) return WRC_Continue;
+  w.pParse = pNC->pParse;
+  w.xExprCallback = resolveExprStep;
+  w.xSelectCallback = resolveSelectStep;
+  w.xSelectCallback2 = 0;
+  w.u.pNC = pNC;
+  savedHasAgg = pNC->ncFlags & (NC_HasAgg|NC_MinMaxAgg|NC_HasWin);
+  pNC->ncFlags &= ~(NC_HasAgg|NC_MinMaxAgg|NC_HasWin);
+  for(i=0; i<pList->nExpr; i++){
+    Expr *pExpr = pList->a[i].pExpr;
+    if( pExpr==0 ) continue;
+#if SQLITE_MAX_EXPR_DEPTH>0
+    w.pParse->nHeight += pExpr->nHeight;
+    if( sqlite3ExprCheckHeight(w.pParse, w.pParse->nHeight) ){
+      return WRC_Abort;
+    }
+#endif
+    sqlite3WalkExpr(&w, pExpr);
+#if SQLITE_MAX_EXPR_DEPTH>0
+    w.pParse->nHeight -= pExpr->nHeight;
+#endif
+    assert( EP_Agg==NC_HasAgg );
+    assert( EP_Win==NC_HasWin );
+    testcase( pNC->ncFlags & NC_HasAgg );
+    testcase( pNC->ncFlags & NC_HasWin );
+    if( pNC->ncFlags & (NC_HasAgg|NC_MinMaxAgg|NC_HasWin) ){
+      ExprSetProperty(pExpr, pNC->ncFlags & (NC_HasAgg|NC_HasWin) );
+      savedHasAgg |= pNC->ncFlags & (NC_HasAgg|NC_MinMaxAgg|NC_HasWin);
+      pNC->ncFlags &= ~(NC_HasAgg|NC_MinMaxAgg|NC_HasWin);
     }
+    if( pNC->nErr>0 || w.pParse->nErr>0 ) return WRC_Abort;
   }
+  pNC->ncFlags |= savedHasAgg;
   return WRC_Continue;
 }
 
@@ -101956,10 +104372,13 @@ SQLITE_PRIVATE void sqlite3ResolveSelectNames(
 ** Resolve names in expressions that can only reference a single table
 ** or which cannot reference any tables at all.  Examples:
 **
-**    (1)   CHECK constraints
-**    (2)   WHERE clauses on partial indices
-**    (3)   Expressions in indexes on expressions
-**    (4)   Expression arguments to VACUUM INTO.
+**                                                    "type" flag
+**                                                    ------------
+**    (1)   CHECK constraints                         NC_IsCheck
+**    (2)   WHERE clauses on partial indices          NC_PartIdx
+**    (3)   Expressions in indexes on expressions     NC_IdxExpr
+**    (4)   Expression arguments to VACUUM INTO.      0
+**    (5)   GENERATED ALWAYS as expressions           NC_GenCol
 **
 ** In all cases except (4), the Expr.iTable value for Expr.op==TK_COLUMN
 ** nodes of the expression is set to -1 and the Expr.iColumn value is
@@ -101968,18 +104387,19 @@ SQLITE_PRIVATE void sqlite3ResolveSelectNames(
 ** Any errors cause an error message to be set in pParse.
 */
 SQLITE_PRIVATE int sqlite3ResolveSelfReference(
-  Parse *pParse,      /* Parsing context */
-  Table *pTab,        /* The table being referenced, or NULL */
-  int type,           /* NC_IsCheck or NC_PartIdx or NC_IdxExpr, or 0 */
-  Expr *pExpr,        /* Expression to resolve.  May be NULL. */
-  ExprList *pList     /* Expression list to resolve.  May be NULL. */
+  Parse *pParse,   /* Parsing context */
+  Table *pTab,     /* The table being referenced, or NULL */
+  int type,        /* NC_IsCheck, NC_PartIdx, NC_IdxExpr, NC_GenCol, or 0 */
+  Expr *pExpr,     /* Expression to resolve.  May be NULL. */
+  ExprList *pList  /* Expression list to resolve.  May be NULL. */
 ){
   SrcList sSrc;                   /* Fake SrcList for pParse->pNewTable */
   NameContext sNC;                /* Name context for pParse->pNewTable */
   int rc;
 
   assert( type==0 || pTab!=0 );
-  assert( type==NC_IsCheck || type==NC_PartIdx || type==NC_IdxExpr || pTab==0 );
+  assert( type==NC_IsCheck || type==NC_PartIdx || type==NC_IdxExpr
+          || type==NC_GenCol || pTab==0 );
   memset(&sNC, 0, sizeof(sNC));
   memset(&sSrc, 0, sizeof(sSrc));
   if( pTab ){
@@ -101987,6 +104407,11 @@ SQLITE_PRIVATE int sqlite3ResolveSelfReference(
     sSrc.a[0].zName = pTab->zName;
     sSrc.a[0].pTab = pTab;
     sSrc.a[0].iCursor = -1;
+    if( pTab->pSchema!=pParse->db->aDb[1].pSchema ){
+      /* Cause EP_FromDDL to be set on TK_FUNCTION nodes of non-TEMP
+      ** schema elements */
+      type |= NC_FromDDL;
+    }
   }
   sNC.pParse = pParse;
   sNC.pSrcList = &sSrc;
@@ -102042,16 +104467,19 @@ SQLITE_PRIVATE char sqlite3TableColumnAffinity(Table *pTab, int iCol){
 ** SELECT a AS b FROM t1 WHERE b;
 ** SELECT * FROM t1 WHERE (select a from t1);
 */
-SQLITE_PRIVATE char sqlite3ExprAffinity(Expr *pExpr){
+SQLITE_PRIVATE char sqlite3ExprAffinity(const Expr *pExpr){
   int op;
   while( ExprHasProperty(pExpr, EP_Skip) ){
-    assert( pExpr->op==TK_COLLATE );
+    assert( pExpr->op==TK_COLLATE || pExpr->op==TK_IF_NULL_ROW );
     pExpr = pExpr->pLeft;
     assert( pExpr!=0 );
   }
   op = pExpr->op;
   if( op==TK_SELECT ){
     assert( pExpr->flags&EP_xIsSelect );
+    assert( pExpr->x.pSelect!=0 );
+    assert( pExpr->x.pSelect->pEList!=0 );
+    assert( pExpr->x.pSelect->pEList->a[0].pExpr!=0 );
     return sqlite3ExprAffinity(pExpr->x.pSelect->pEList->a[0].pExpr);
   }
   if( op==TK_REGISTER ) op = pExpr->op2;
@@ -102070,6 +104498,9 @@ SQLITE_PRIVATE char sqlite3ExprAffinity(Expr *pExpr){
         pExpr->pLeft->x.pSelect->pEList->a[pExpr->iColumn].pExpr
     );
   }
+  if( op==TK_VECTOR ){
+    return sqlite3ExprAffinity(pExpr->x.pList->a[0].pExpr);
+  }
   return pExpr->affExpr;
 }
 
@@ -102109,7 +104540,7 @@ SQLITE_PRIVATE Expr *sqlite3ExprAddCollateString(Parse *pParse, Expr *pExpr, con
 */
 SQLITE_PRIVATE Expr *sqlite3ExprSkipCollate(Expr *pExpr){
   while( pExpr && ExprHasProperty(pExpr, EP_Skip) ){
-    assert( pExpr->op==TK_COLLATE );
+    assert( pExpr->op==TK_COLLATE || pExpr->op==TK_IF_NULL_ROW );
     pExpr = pExpr->pLeft;
   }
   return pExpr;
@@ -102128,7 +104559,7 @@ SQLITE_PRIVATE Expr *sqlite3ExprSkipCollateAndLikely(Expr *pExpr){
       assert( pExpr->op==TK_FUNCTION );
       pExpr = pExpr->x.pList->a[0].pExpr;
     }else{
-      assert( pExpr->op==TK_COLLATE );
+      assert( pExpr->op==TK_COLLATE || pExpr->op==TK_IF_NULL_ROW );
       pExpr = pExpr->pLeft;
     }
   }
@@ -102149,10 +104580,10 @@ SQLITE_PRIVATE Expr *sqlite3ExprSkipCollateAndLikely(Expr *pExpr){
 ** COLLATE operators take first precedence.  Left operands take
 ** precedence over right operands.
 */
-SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){
+SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, const Expr *pExpr){
   sqlite3 *db = pParse->db;
   CollSeq *pColl = 0;
-  Expr *p = pExpr;
+  const Expr *p = pExpr;
   while( p ){
     int op = p->op;
     if( op==TK_REGISTER ) op = p->op2;
@@ -102172,6 +104603,10 @@ SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){
       p = p->pLeft;
       continue;
     }
+    if( op==TK_VECTOR ){
+      p = p->x.pList->a[0].pExpr;
+      continue;
+    }
     if( op==TK_COLLATE ){
       pColl = sqlite3GetCollSeq(pParse, ENC(db), 0, p->u.zToken);
       break;
@@ -102183,10 +104618,10 @@ SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){
         Expr *pNext  = p->pRight;
         /* The Expr.x union is never used at the same time as Expr.pRight */
         assert( p->x.pList==0 || p->pRight==0 );
-        /* p->flags holds EP_Collate and p->pLeft->flags does not.  And
-        ** p->x.pSelect cannot.  So if p->x.pLeft exists, it must hold at
-        ** least one EP_Collate. Thus the following two ALWAYS. */
-        if( p->x.pList!=0 && ALWAYS(!ExprHasProperty(p, EP_xIsSelect)) ){
+        if( p->x.pList!=0
+         && !db->mallocFailed
+         && ALWAYS(!ExprHasProperty(p, EP_xIsSelect))
+        ){
           int i;
           for(i=0; ALWAYS(i<p->x.pList->nExpr); i++){
             if( ExprHasProperty(p->x.pList->a[i].pExpr, EP_Collate) ){
@@ -102217,7 +104652,7 @@ SQLITE_PRIVATE CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr){
 ** The sqlite3ExprCollSeq() routine works the same except that it
 ** returns NULL if there is no defined collation.
 */
-SQLITE_PRIVATE CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, Expr *pExpr){
+SQLITE_PRIVATE CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, const Expr *pExpr){
   CollSeq *p = sqlite3ExprCollSeq(pParse, pExpr);
   if( p==0 ) p = pParse->db->pDfltColl;
   assert( p!=0 );
@@ -102227,7 +104662,7 @@ SQLITE_PRIVATE CollSeq *sqlite3ExprNNCollSeq(Parse *pParse, Expr *pExpr){
 /*
 ** Return TRUE if the two expressions have equivalent collating sequences.
 */
-SQLITE_PRIVATE int sqlite3ExprCollSeqMatch(Parse *pParse, Expr *pE1, Expr *pE2){
+SQLITE_PRIVATE int sqlite3ExprCollSeqMatch(Parse *pParse, const Expr *pE1, const Expr *pE2){
   CollSeq *pColl1 = sqlite3ExprNNCollSeq(pParse, pE1);
   CollSeq *pColl2 = sqlite3ExprNNCollSeq(pParse, pE2);
   return sqlite3StrICmp(pColl1->zName, pColl2->zName)==0;
@@ -102238,7 +104673,7 @@ SQLITE_PRIVATE int sqlite3ExprCollSeqMatch(Parse *pParse, Expr *pE1, Expr *pE2){
 ** type affinity of the other operand.  This routine returns the
 ** type affinity that should be used for the comparison operator.
 */
-SQLITE_PRIVATE char sqlite3CompareAffinity(Expr *pExpr, char aff2){
+SQLITE_PRIVATE char sqlite3CompareAffinity(const Expr *pExpr, char aff2){
   char aff1 = sqlite3ExprAffinity(pExpr);
   if( aff1>SQLITE_AFF_NONE && aff2>SQLITE_AFF_NONE ){
     /* Both sides of the comparison are columns. If one has numeric
@@ -102260,7 +104695,7 @@ SQLITE_PRIVATE char sqlite3CompareAffinity(Expr *pExpr, char aff2){
 ** pExpr is a comparison operator.  Return the type affinity that should
 ** be applied to both operands prior to doing the comparison.
 */
-static char comparisonAffinity(Expr *pExpr){
+static char comparisonAffinity(const Expr *pExpr){
   char aff;
   assert( pExpr->op==TK_EQ || pExpr->op==TK_IN || pExpr->op==TK_LT ||
           pExpr->op==TK_GT || pExpr->op==TK_GE || pExpr->op==TK_LE ||
@@ -102283,7 +104718,7 @@ static char comparisonAffinity(Expr *pExpr){
 ** if the index with affinity idx_affinity may be used to implement
 ** the comparison in pExpr.
 */
-SQLITE_PRIVATE int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity){
+SQLITE_PRIVATE int sqlite3IndexAffinityOk(const Expr *pExpr, char idx_affinity){
   char aff = comparisonAffinity(pExpr);
   if( aff<SQLITE_AFF_TEXT ){
     return 1;
@@ -102298,7 +104733,11 @@ SQLITE_PRIVATE int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity){
 ** Return the P5 value that should be used for a binary comparison
 ** opcode (OP_Eq, OP_Ge etc.) used to compare pExpr1 and pExpr2.
 */
-static u8 binaryCompareP5(Expr *pExpr1, Expr *pExpr2, int jumpIfNull){
+static u8 binaryCompareP5(
+  const Expr *pExpr1,   /* Left operand */
+  const Expr *pExpr2,   /* Right operand */
+  int jumpIfNull        /* Extra flags added to P5 */
+){
   u8 aff = (char)sqlite3ExprAffinity(pExpr2);
   aff = (u8)sqlite3CompareAffinity(pExpr1, aff) | (u8)jumpIfNull;
   return aff;
@@ -102318,8 +104757,8 @@ static u8 binaryCompareP5(Expr *pExpr1, Expr *pExpr2, int jumpIfNull){
 */
 SQLITE_PRIVATE CollSeq *sqlite3BinaryCompareCollSeq(
   Parse *pParse,
-  Expr *pLeft,
-  Expr *pRight
+  const Expr *pLeft,
+  const Expr *pRight
 ){
   CollSeq *pColl;
   assert( pLeft );
@@ -102336,6 +104775,22 @@ SQLITE_PRIVATE CollSeq *sqlite3BinaryCompareCollSeq(
   return pColl;
 }
 
+/* Expresssion p is a comparison operator.  Return a collation sequence
+** appropriate for the comparison operator.
+**
+** This is normally just a wrapper around sqlite3BinaryCompareCollSeq().
+** However, if the OP_Commuted flag is set, then the order of the operands
+** is reversed in the sqlite3BinaryCompareCollSeq() call so that the
+** correct collating sequence is found.
+*/
+SQLITE_PRIVATE CollSeq *sqlite3ExprCompareCollSeq(Parse *pParse, const Expr *p){
+  if( ExprHasProperty(p, EP_Commuted) ){
+    return sqlite3BinaryCompareCollSeq(pParse, p->pRight, p->pLeft);
+  }else{
+    return sqlite3BinaryCompareCollSeq(pParse, p->pLeft, p->pRight);
+  }
+}
+
 /*
 ** Generate code for a comparison operator.
 */
@@ -102346,13 +104801,19 @@ static int codeCompare(
   int opcode,       /* The comparison opcode */
   int in1, int in2, /* Register holding operands */
   int dest,         /* Jump here if true.  */
-  int jumpIfNull    /* If true, jump if either operand is NULL */
+  int jumpIfNull,   /* If true, jump if either operand is NULL */
+  int isCommuted    /* The comparison has been commuted */
 ){
   int p5;
   int addr;
   CollSeq *p4;
 
-  p4 = sqlite3BinaryCompareCollSeq(pParse, pLeft, pRight);
+  if( pParse->nErr ) return 0;
+  if( isCommuted ){
+    p4 = sqlite3BinaryCompareCollSeq(pParse, pRight, pLeft);
+  }else{
+    p4 = sqlite3BinaryCompareCollSeq(pParse, pLeft, pRight);
+  }
   p5 = binaryCompareP5(pLeft, pRight, jumpIfNull);
   addr = sqlite3VdbeAddOp4(pParse->pVdbe, opcode, in2, dest, in1,
                            (void*)p4, P4_COLLSEQ);
@@ -102563,7 +105024,10 @@ static void codeVectorCompare(
   int regRight = 0;
   u8 opx = op;
   int addrDone = sqlite3VdbeMakeLabel(pParse);
+  int isCommuted = ExprHasProperty(pExpr,EP_Commuted);
 
+  assert( !ExprHasVVAProperty(pExpr,EP_Immutable) );
+  if( pParse->nErr ) return;
   if( nLeft!=sqlite3ExprVectorSize(pRight) ){
     sqlite3ErrorMsg(pParse, "row value misused");
     return;
@@ -102592,7 +105056,7 @@ static void codeVectorCompare(
     assert( i>=0 && i<nLeft );
     r1 = exprVectorRegister(pParse, pLeft, i, regLeft, &pL, &regFree1);
     r2 = exprVectorRegister(pParse, pRight, i, regRight, &pR, &regFree2);
-    codeCompare(pParse, pL, pR, opx, r1, r2, dest, p5);
+    codeCompare(pParse, pL, pR, opx, r1, r2, dest, p5, isCommuted);
     testcase(op==OP_Lt); VdbeCoverageIf(v,op==OP_Lt);
     testcase(op==OP_Le); VdbeCoverageIf(v,op==OP_Le);
     testcase(op==OP_Gt); VdbeCoverageIf(v,op==OP_Gt);
@@ -102902,9 +105366,11 @@ SQLITE_PRIVATE Expr *sqlite3ExprAnd(Parse *pParse, Expr *pLeft, Expr *pRight){
     return pRight;
   }else if( pRight==0 ){
     return pLeft;
-  }else if( ExprAlwaysFalse(pLeft) || ExprAlwaysFalse(pRight) ){
-    sqlite3ExprUnmapAndDelete(pParse, pLeft);
-    sqlite3ExprUnmapAndDelete(pParse, pRight);
+  }else if( (ExprAlwaysFalse(pLeft) || ExprAlwaysFalse(pRight))
+         && !IN_RENAME_OBJECT
+  ){
+    sqlite3ExprDelete(db, pLeft);
+    sqlite3ExprDelete(db, pRight);
     return sqlite3Expr(db, TK_INTEGER, "0");
   }else{
     return sqlite3PExpr(pParse, TK_AND, pLeft, pRight);
@@ -102941,6 +105407,40 @@ SQLITE_PRIVATE Expr *sqlite3ExprFunction(
 }
 
 /*
+** Check to see if a function is usable according to current access
+** rules:
+**
+**    SQLITE_FUNC_DIRECT    -     Only usable from top-level SQL
+**
+**    SQLITE_FUNC_UNSAFE    -     Usable if TRUSTED_SCHEMA or from
+**                                top-level SQL
+**
+** If the function is not usable, create an error.
+*/
+SQLITE_PRIVATE void sqlite3ExprFunctionUsable(
+  Parse *pParse,         /* Parsing and code generating context */
+  Expr *pExpr,           /* The function invocation */
+  FuncDef *pDef          /* The function being invoked */
+){
+  assert( !IN_RENAME_OBJECT );
+  assert( (pDef->funcFlags & (SQLITE_FUNC_DIRECT|SQLITE_FUNC_UNSAFE))!=0 );
+  if( ExprHasProperty(pExpr, EP_FromDDL) ){
+    if( (pDef->funcFlags & SQLITE_FUNC_DIRECT)!=0
+     || (pParse->db->flags & SQLITE_TrustedSchema)==0
+    ){
+      /* Functions prohibited in triggers and views if:
+      **     (1) tagged with SQLITE_DIRECTONLY
+      **     (2) not tagged with SQLITE_INNOCUOUS (which means it
+      **         is tagged with SQLITE_FUNC_UNSAFE) and
+      **         SQLITE_DBCONFIG_TRUSTED_SCHEMA is off (meaning
+      **         that the schema is possibly tainted).
+      */
+      sqlite3ErrorMsg(pParse, "unsafe use of %s()", pDef->zName);
+    }
+  }
+}
+
+/*
 ** Assign a variable number to an expression that encodes a wildcard
 ** in the original SQL statement.
 **
@@ -103139,7 +105639,7 @@ static int dupedExprStructSize(Expr *p, int flags){
     assert( !ExprHasProperty(p, EP_TokenOnly|EP_Reduced) );
     assert( !ExprHasProperty(p, EP_FromJoin) );
     assert( !ExprHasProperty(p, EP_MemToken) );
-    assert( !ExprHasProperty(p, EP_NoReduce) );
+    assert( !ExprHasVVAProperty(p, EP_NoReduce) );
     if( p->pLeft || p->x.pList ){
       nSize = EXPR_REDUCEDSIZE | EP_Reduced;
     }else{
@@ -103244,6 +105744,10 @@ static Expr *exprDup(sqlite3 *db, Expr *p, int dupFlags, u8 **pzBuffer){
     pNew->flags &= ~(EP_Reduced|EP_TokenOnly|EP_Static|EP_MemToken);
     pNew->flags |= nStructSize & (EP_Reduced|EP_TokenOnly);
     pNew->flags |= staticFlag;
+    ExprClearVVAProperties(pNew);
+    if( dupFlags ){
+      ExprSetVVAProperty(pNew, EP_Immutable);
+    }
 
     /* Copy the p->u.zToken string, if any. */
     if( nToken ){
@@ -103407,12 +105911,11 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListDup(sqlite3 *db, ExprList *p, int flags)
         pNewExpr->pLeft = pPriorSelectCol;
       }
     }
-    pItem->zName = sqlite3DbStrDup(db, pOldItem->zName);
-    pItem->zSpan = sqlite3DbStrDup(db, pOldItem->zSpan);
+    pItem->zEName = sqlite3DbStrDup(db, pOldItem->zEName);
     pItem->sortFlags = pOldItem->sortFlags;
+    pItem->eEName = pOldItem->eEName;
     pItem->done = 0;
     pItem->bNulls = pOldItem->bNulls;
-    pItem->bSpanIsTab = pOldItem->bSpanIsTab;
     pItem->bSorterRef = pOldItem->bSorterRef;
     pItem->u = pOldItem->u;
   }
@@ -103579,9 +106082,9 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListAppend(
     pList = pNew;
   }
   pItem = &pList->a[pList->nExpr++];
-  assert( offsetof(struct ExprList_item,zName)==sizeof(pItem->pExpr) );
+  assert( offsetof(struct ExprList_item,zEName)==sizeof(pItem->pExpr) );
   assert( offsetof(struct ExprList_item,pExpr)==0 );
-  memset(&pItem->zName,0,sizeof(*pItem)-offsetof(struct ExprList_item,zName));
+  memset(&pItem->zEName,0,sizeof(*pItem)-offsetof(struct ExprList_item,zEName));
   pItem->pExpr = pExpr;
   return pList;
 
@@ -103638,7 +106141,7 @@ SQLITE_PRIVATE ExprList *sqlite3ExprListAppendVector(
     pList = sqlite3ExprListAppend(pParse, pList, pSubExpr);
     if( pList ){
       assert( pList->nExpr==iFirst+i+1 );
-      pList->a[pList->nExpr-1].zName = pColumns->a[i].zName;
+      pList->a[pList->nExpr-1].zEName = pColumns->a[i].zName;
       pColumns->a[i].zName = 0;
     }
   }
@@ -103698,7 +106201,7 @@ SQLITE_PRIVATE void sqlite3ExprListSetSortOrder(ExprList *p, int iSortOrder, int
 }
 
 /*
-** Set the ExprList.a[].zName element of the most recently added item
+** Set the ExprList.a[].zEName element of the most recently added item
 ** on the expression list.
 **
 ** pList might be NULL following an OOM error.  But pName should never be
@@ -103712,15 +106215,22 @@ SQLITE_PRIVATE void sqlite3ExprListSetName(
   int dequote             /* True to cause the name to be dequoted */
 ){
   assert( pList!=0 || pParse->db->mallocFailed!=0 );
+  assert( pParse->eParseMode!=PARSE_MODE_UNMAP || dequote==0 );
   if( pList ){
     struct ExprList_item *pItem;
     assert( pList->nExpr>0 );
     pItem = &pList->a[pList->nExpr-1];
-    assert( pItem->zName==0 );
-    pItem->zName = sqlite3DbStrNDup(pParse->db, pName->z, pName->n);
-    if( dequote ) sqlite3Dequote(pItem->zName);
-    if( IN_RENAME_OBJECT ){
-      sqlite3RenameTokenMap(pParse, (void*)pItem->zName, pName);
+    assert( pItem->zEName==0 );
+    assert( pItem->eEName==ENAME_NAME );
+    pItem->zEName = sqlite3DbStrNDup(pParse->db, pName->z, pName->n);
+    if( dequote ){
+      /* If dequote==0, then pName->z does not point to part of a DDL
+      ** statement handled by the parser. And so no token need be added
+      ** to the token-map.  */
+      sqlite3Dequote(pItem->zEName);
+      if( IN_RENAME_OBJECT ){
+        sqlite3RenameTokenMap(pParse, (void*)pItem->zEName, pName);
+      }
     }
   }
 }
@@ -103744,8 +106254,10 @@ SQLITE_PRIVATE void sqlite3ExprListSetSpan(
   if( pList ){
     struct ExprList_item *pItem = &pList->a[pList->nExpr-1];
     assert( pList->nExpr>0 );
-    sqlite3DbFree(db, pItem->zSpan);
-    pItem->zSpan = sqlite3DbSpanDup(db, zStart, zEnd);
+    if( pItem->zEName==0 ){
+      pItem->zEName = sqlite3DbSpanDup(db, zStart, zEnd);
+      pItem->eEName = ENAME_SPAN;
+    }
   }
 }
 
@@ -103775,8 +106287,7 @@ static SQLITE_NOINLINE void exprListDeleteNN(sqlite3 *db, ExprList *pList){
   assert( pList->nExpr>0 );
   do{
     sqlite3ExprDelete(db, pItem->pExpr);
-    sqlite3DbFree(db, pItem->zName);
-    sqlite3DbFree(db, pItem->zSpan);
+    sqlite3DbFree(db, pItem->zEName);
     pItem++;
   }while( --i>0 );
   sqlite3DbFreeNN(db, pList);
@@ -103815,18 +106326,33 @@ SQLITE_PRIVATE int sqlite3SelectWalkFail(Walker *pWalker, Select *NotUsed){
 }
 
 /*
+** Check the input string to see if it is "true" or "false" (in any case).
+**
+**       If the string is....           Return
+**         "true"                         EP_IsTrue
+**         "false"                        EP_IsFalse
+**         anything else                  0
+*/
+SQLITE_PRIVATE u32 sqlite3IsTrueOrFalse(const char *zIn){
+  if( sqlite3StrICmp(zIn, "true")==0  ) return EP_IsTrue;
+  if( sqlite3StrICmp(zIn, "false")==0 ) return EP_IsFalse;
+  return 0;
+}
+
+
+/*
 ** If the input expression is an ID with the name "true" or "false"
 ** then convert it into an TK_TRUEFALSE term.  Return non-zero if
 ** the conversion happened, and zero if the expression is unaltered.
 */
 SQLITE_PRIVATE int sqlite3ExprIdToTrueFalse(Expr *pExpr){
+  u32 v;
   assert( pExpr->op==TK_ID || pExpr->op==TK_STRING );
   if( !ExprHasProperty(pExpr, EP_Quoted)
-   && (sqlite3StrICmp(pExpr->u.zToken, "true")==0
-       || sqlite3StrICmp(pExpr->u.zToken, "false")==0)
+   && (v = sqlite3IsTrueOrFalse(pExpr->u.zToken))!=0
   ){
     pExpr->op = TK_TRUEFALSE;
-    ExprSetProperty(pExpr, pExpr->u.zToken[4]==0 ? EP_IsTrue : EP_IsFalse);
+    ExprSetProperty(pExpr, v);
     return 1;
   }
   return 0;
@@ -103888,11 +106414,12 @@ SQLITE_PRIVATE Expr *sqlite3ExprSimplifiedAndOr(Expr *pExpr){
 ** In all cases, the callbacks set Walker.eCode=0 and abort if the expression
 ** is found to not be a constant.
 **
-** The sqlite3ExprIsConstantOrFunction() is used for evaluating expressions
-** in a CREATE TABLE statement.  The Walker.eCode value is 5 when parsing
-** an existing schema and 4 when processing a new statement.  A bound
-** parameter raises an error for new statements, but is silently converted
-** to NULL for existing schemas.  This allows sqlite_master tables that
+** The sqlite3ExprIsConstantOrFunction() is used for evaluating DEFAULT
+** expressions in a CREATE TABLE statement.  The Walker.eCode value is 5
+** when parsing an existing schema out of the sqlite_schema table and 4
+** when processing a new CREATE TABLE statement.  A bound parameter raises
+** an error for new statements, but is silently converted
+** to NULL for existing schemas.  This allows sqlite_schema tables that
 ** contain a bound parameter because they were generated by older versions
 ** of SQLite to be parsed by newer versions of SQLite without raising a
 ** malformed schema error.
@@ -103912,7 +106439,10 @@ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){
     ** and either pWalker->eCode==4 or 5 or the function has the
     ** SQLITE_FUNC_CONST flag. */
     case TK_FUNCTION:
-      if( pWalker->eCode>=4 || ExprHasProperty(pExpr,EP_ConstFunc) ){
+      if( (pWalker->eCode>=4 || ExprHasProperty(pExpr,EP_ConstFunc))
+       && !ExprHasProperty(pExpr, EP_WinFunc)
+      ){
+        if( pWalker->eCode==5 ) ExprSetProperty(pExpr, EP_FromDDL);
         return WRC_Continue;
       }else{
         pWalker->eCode = 0;
@@ -103924,7 +106454,7 @@ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){
       if( sqlite3ExprIdToTrueFalse(pExpr) ){
         return WRC_Prune;
       }
-      /* Fall thru */
+      /* no break */ deliberate_fall_through
     case TK_COLUMN:
     case TK_AGG_FUNCTION:
     case TK_AGG_COLUMN:
@@ -103938,18 +106468,20 @@ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){
       if( pWalker->eCode==3 && pExpr->iTable==pWalker->u.iCur ){
         return WRC_Continue;
       }
-      /* Fall through */
+      /* no break */ deliberate_fall_through
     case TK_IF_NULL_ROW:
     case TK_REGISTER:
+    case TK_DOT:
       testcase( pExpr->op==TK_REGISTER );
       testcase( pExpr->op==TK_IF_NULL_ROW );
+      testcase( pExpr->op==TK_DOT );
       pWalker->eCode = 0;
       return WRC_Abort;
     case TK_VARIABLE:
       if( pWalker->eCode==5 ){
         /* Silently convert bound parameters that appear inside of CREATE
         ** statements into a NULL when parsing the CREATE statement text out
-        ** of the sqlite_master table */
+        ** of the sqlite_schema table */
         pExpr->op = TK_NULL;
       }else if( pWalker->eCode==4 ){
         /* A bound parameter in a CREATE statement that originates from
@@ -103957,7 +106489,7 @@ static int exprNodeIsConstant(Walker *pWalker, Expr *pExpr){
         pWalker->eCode = 0;
         return WRC_Abort;
       }
-      /* Fall through */
+      /* no break */ deliberate_fall_through
     default:
       testcase( pExpr->op==TK_SELECT ); /* sqlite3SelectWalkFail() disallows */
       testcase( pExpr->op==TK_EXISTS ); /* sqlite3SelectWalkFail() disallows */
@@ -104000,7 +106532,7 @@ SQLITE_PRIVATE int sqlite3ExprIsConstant(Expr *p){
 **
 ** When this routine returns true, it indicates that the expression
 ** can be added to the pParse->pConstExpr list and evaluated once when
-** the prepared statement starts up.  See sqlite3ExprCodeAtInit().
+** the prepared statement starts up.  See sqlite3ExprCodeRunJustOnce().
 */
 SQLITE_PRIVATE int sqlite3ExprIsConstantNotJoin(Expr *p){
   return exprIsConst(p, 2, 0);
@@ -104076,9 +106608,21 @@ SQLITE_PRIVATE int sqlite3ExprIsConstantOrGroupBy(Parse *pParse, Expr *p, ExprLi
 }
 
 /*
-** Walk an expression tree.  Return non-zero if the expression is constant
-** or a function call with constant arguments.  Return and 0 if there
-** are any variables.
+** Walk an expression tree for the DEFAULT field of a column definition
+** in a CREATE TABLE statement.  Return non-zero if the expression is
+** acceptable for use as a DEFAULT.  That is to say, return non-zero if
+** the expression is constant or a function call with constant arguments.
+** Return and 0 if there are any variables.
+**
+** isInit is true when parsing from sqlite_schema.  isInit is false when
+** processing a new CREATE TABLE statement.  When isInit is true, parameters
+** (such as ? or $abc) in the expression are converted into NULL.  When
+** isInit is false, parameters raise an error.  Parameters should not be
+** allowed in a CREATE TABLE statement, but some legacy versions of SQLite
+** allowed it, so we need to support it when reading sqlite_schema for
+** backwards compatibility.
+**
+** If isInit is true, set EP_FromDDL on every TK_FUNCTION node.
 **
 ** For the purposes of this function, a double-quoted string (ex: "abc")
 ** is considered a variable but a single-quoted string (ex: 'abc') is
@@ -104175,7 +106719,9 @@ SQLITE_PRIVATE int sqlite3ExprCanBeNull(const Expr *p){
     case TK_COLUMN:
       return ExprHasProperty(p, EP_CanBeNull) ||
              p->y.pTab==0 ||  /* Reference to column of index on expression */
-             (p->iColumn>=0 && p->y.pTab->aCol[p->iColumn].notNull==0);
+             (p->iColumn>=0
+              && ALWAYS(p->y.pTab->aCol!=0) /* Defense against OOM problems */
+              && p->y.pTab->aCol[p->iColumn].notNull==0);
     default:
       return 1;
   }
@@ -104436,7 +106982,7 @@ SQLITE_PRIVATE int sqlite3FindInIndex(
   if( pParse->nErr==0 && (p = isCandidateForInOpt(pX))!=0 ){
     sqlite3 *db = pParse->db;              /* Database connection */
     Table *pTab;                           /* Table <table>. */
-    i16 iDb;                               /* Database idx for pTab */
+    int iDb;                               /* Database idx for pTab */
     ExprList *pEList = p->pEList;
     int nExpr = pEList->nExpr;
 
@@ -104447,6 +106993,7 @@ SQLITE_PRIVATE int sqlite3FindInIndex(
 
     /* Code an OP_Transaction and OP_TableLock for <table>. */
     iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
+    assert( iDb>=0 && iDb<SQLITE_MAX_ATTACHED );
     sqlite3CodeVerifySchema(pParse, iDb);
     sqlite3TableLock(pParse, iDb, pTab->tnum, 0, pTab->zName);
 
@@ -104652,8 +107199,10 @@ static char *exprINAffinity(Parse *pParse, Expr *pExpr){
 **   "sub-select returns N columns - expected M"
 */
 SQLITE_PRIVATE void sqlite3SubselectError(Parse *pParse, int nActual, int nExpect){
-  const char *zFmt = "sub-select returns %d columns - expected %d";
-  sqlite3ErrorMsg(pParse, zFmt, nActual, nExpect);
+  if( pParse->nErr==0 ){
+    const char *zFmt = "sub-select returns %d columns - expected %d";
+    sqlite3ErrorMsg(pParse, zFmt, nActual, nExpect);
+  }
 }
 #endif
 
@@ -104747,6 +107296,7 @@ SQLITE_PRIVATE void sqlite3CodeRhsOfIN(
 
     /* Begin coding the subroutine */
     ExprSetProperty(pExpr, EP_Subrtn);
+    assert( !ExprHasProperty(pExpr, EP_TokenOnly|EP_Reduced) );
     pExpr->y.sub.regReturn = ++pParse->nMem;
     pExpr->y.sub.iAddr =
       sqlite3VdbeAddOp2(v, OP_Integer, 0, pExpr->y.sub.regReturn) + 1;
@@ -104828,6 +107378,8 @@ SQLITE_PRIVATE void sqlite3CodeRhsOfIN(
     affinity = sqlite3ExprAffinity(pLeft);
     if( affinity<=SQLITE_AFF_NONE ){
       affinity = SQLITE_AFF_BLOB;
+    }else if( affinity==SQLITE_AFF_REAL ){
+      affinity = SQLITE_AFF_NUMERIC;
     }
     if( pKeyInfo ){
       assert( sqlite3KeyInfoIsWriteable(pKeyInfo) );
@@ -105066,7 +107618,9 @@ static void sqlite3ExprCodeIN(
   int destNotNull;      /* Jump here if a comparison is not true in step 6 */
   int addrTop;          /* Top of the step-6 loop */
   int iTab = 0;         /* Index to use */
+  u8 okConstFactor = pParse->okConstFactor;
 
+  assert( !ExprHasVVAProperty(pExpr,EP_Immutable) );
   pLeft = pExpr->pLeft;
   if( sqlite3ExprCheckIN(pParse, pExpr) ) return;
   zAff = exprINAffinity(pParse, pExpr);
@@ -105109,8 +107663,14 @@ static void sqlite3ExprCodeIN(
   ** so that the fields are in the same order as an existing index.   The
   ** aiMap[] array contains a mapping from the original LHS field order to
   ** the field order that matches the RHS index.
-  */
+  **
+  ** Avoid factoring the LHS of the IN(...) expression out of the loop,
+  ** even if it is constant, as OP_Affinity may be used on the register
+  ** by code generated below.  */
+  assert( pParse->okConstFactor==okConstFactor );
+  pParse->okConstFactor = 0;
   rLhsOrig = exprCodeVector(pParse, pLeft, &iDummy);
+  pParse->okConstFactor = okConstFactor;
   for(i=0; i<nVector && aiMap[i]==i; i++){} /* Are LHS fields reordered? */
   if( i==nVector ){
     /* LHS fields are not reordered */
@@ -105136,37 +107696,35 @@ static void sqlite3ExprCodeIN(
     int r2, regToFree;
     int regCkNull = 0;
     int ii;
-    int bLhsReal;  /* True if the LHS of the IN has REAL affinity */
     assert( !ExprHasProperty(pExpr, EP_xIsSelect) );
     if( destIfNull!=destIfFalse ){
       regCkNull = sqlite3GetTempReg(pParse);
       sqlite3VdbeAddOp3(v, OP_BitAnd, rLhs, rLhs, regCkNull);
     }
-    bLhsReal = sqlite3ExprAffinity(pExpr->pLeft)==SQLITE_AFF_REAL;
     for(ii=0; ii<pList->nExpr; ii++){
-      if( bLhsReal ){
-        r2 = regToFree = sqlite3GetTempReg(pParse);
-        sqlite3ExprCode(pParse, pList->a[ii].pExpr, r2);
-        sqlite3VdbeAddOp4(v, OP_Affinity, r2, 1, 0, "E", P4_STATIC);
-      }else{
-        r2 = sqlite3ExprCodeTemp(pParse, pList->a[ii].pExpr, &regToFree);
-      }
+      r2 = sqlite3ExprCodeTemp(pParse, pList->a[ii].pExpr, &regToFree);
       if( regCkNull && sqlite3ExprCanBeNull(pList->a[ii].pExpr) ){
         sqlite3VdbeAddOp3(v, OP_BitAnd, regCkNull, r2, regCkNull);
       }
+      sqlite3ReleaseTempReg(pParse, regToFree);
       if( ii<pList->nExpr-1 || destIfNull!=destIfFalse ){
-        sqlite3VdbeAddOp4(v, OP_Eq, rLhs, labelOk, r2,
+        int op = rLhs!=r2 ? OP_Eq : OP_NotNull;
+        sqlite3VdbeAddOp4(v, op, rLhs, labelOk, r2,
                           (void*)pColl, P4_COLLSEQ);
-        VdbeCoverageIf(v, ii<pList->nExpr-1);
-        VdbeCoverageIf(v, ii==pList->nExpr-1);
+        VdbeCoverageIf(v, ii<pList->nExpr-1 && op==OP_Eq);
+        VdbeCoverageIf(v, ii==pList->nExpr-1 && op==OP_Eq);
+        VdbeCoverageIf(v, ii<pList->nExpr-1 && op==OP_NotNull);
+        VdbeCoverageIf(v, ii==pList->nExpr-1 && op==OP_NotNull);
         sqlite3VdbeChangeP5(v, zAff[0]);
       }else{
+        int op = rLhs!=r2 ? OP_Ne : OP_IsNull;
         assert( destIfNull==destIfFalse );
-        sqlite3VdbeAddOp4(v, OP_Ne, rLhs, destIfFalse, r2,
-                          (void*)pColl, P4_COLLSEQ); VdbeCoverage(v);
+        sqlite3VdbeAddOp4(v, op, rLhs, destIfFalse, r2,
+                          (void*)pColl, P4_COLLSEQ);
+        VdbeCoverageIf(v, op==OP_Ne);
+        VdbeCoverageIf(v, op==OP_IsNull);
         sqlite3VdbeChangeP5(v, zAff[0] | SQLITE_JUMPIFNULL);
       }
-      sqlite3ReleaseTempReg(pParse, regToFree);
     }
     if( regCkNull ){
       sqlite3VdbeAddOp2(v, OP_IsNull, regCkNull, destIfNull); VdbeCoverage(v);
@@ -105186,6 +107744,7 @@ static void sqlite3ExprCodeIN(
   }else{
     destStep2 = destStep6 = sqlite3VdbeMakeLabel(pParse);
   }
+  if( pParse->nErr ) goto sqlite3ExprCodeIN_finished;
   for(i=0; i<nVector; i++){
     Expr *p = sqlite3VectorFieldSubexpr(pExpr->pLeft, i);
     if( sqlite3ExprCanBeNull(p) ){
@@ -105367,16 +107926,45 @@ SQLITE_PRIVATE void sqlite3ExprCodeLoadIndexColumn(
   }
 }
 
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+/*
+** Generate code that will compute the value of generated column pCol
+** and store the result in register regOut
+*/
+SQLITE_PRIVATE void sqlite3ExprCodeGeneratedColumn(
+  Parse *pParse,
+  Column *pCol,
+  int regOut
+){
+  int iAddr;
+  Vdbe *v = pParse->pVdbe;
+  assert( v!=0 );
+  assert( pParse->iSelfTab!=0 );
+  if( pParse->iSelfTab>0 ){
+    iAddr = sqlite3VdbeAddOp3(v, OP_IfNullRow, pParse->iSelfTab-1, 0, regOut);
+  }else{
+    iAddr = 0;
+  }
+  sqlite3ExprCodeCopy(pParse, pCol->pDflt, regOut);
+  if( pCol->affinity>=SQLITE_AFF_TEXT ){
+    sqlite3VdbeAddOp4(v, OP_Affinity, regOut, 1, 0, &pCol->affinity, 1);
+  }
+  if( iAddr ) sqlite3VdbeJumpHere(v, iAddr);
+}
+#endif /* SQLITE_OMIT_GENERATED_COLUMNS */
+
 /*
 ** Generate code to extract the value of the iCol-th column of a table.
 */
 SQLITE_PRIVATE void sqlite3ExprCodeGetColumnOfTable(
-  Vdbe *v,        /* The VDBE under construction */
+  Vdbe *v,        /* Parsing context */
   Table *pTab,    /* The table containing the value */
   int iTabCur,    /* The table cursor.  Or the PK cursor for WITHOUT ROWID */
   int iCol,       /* Index of the column to extract */
   int regOut      /* Extract the value into this register */
 ){
+  Column *pCol;
+  assert( v!=0 );
   if( pTab==0 ){
     sqlite3VdbeAddOp3(v, OP_Column, iTabCur, iCol, regOut);
     return;
@@ -105384,14 +107972,36 @@ SQLITE_PRIVATE void sqlite3ExprCodeGetColumnOfTable(
   if( iCol<0 || iCol==pTab->iPKey ){
     sqlite3VdbeAddOp2(v, OP_Rowid, iTabCur, regOut);
   }else{
-    int op = IsVirtual(pTab) ? OP_VColumn : OP_Column;
-    int x = iCol;
-    if( !HasRowid(pTab) && !IsVirtual(pTab) ){
-      x = sqlite3ColumnOfIndex(sqlite3PrimaryKeyIndex(pTab), iCol);
+    int op;
+    int x;
+    if( IsVirtual(pTab) ){
+      op = OP_VColumn;
+      x = iCol;
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+    }else if( (pCol = &pTab->aCol[iCol])->colFlags & COLFLAG_VIRTUAL ){
+      Parse *pParse = sqlite3VdbeParser(v);
+      if( pCol->colFlags & COLFLAG_BUSY ){
+        sqlite3ErrorMsg(pParse, "generated column loop on \"%s\"", pCol->zName);
+      }else{
+        int savedSelfTab = pParse->iSelfTab;
+        pCol->colFlags |= COLFLAG_BUSY;
+        pParse->iSelfTab = iTabCur+1;
+        sqlite3ExprCodeGeneratedColumn(pParse, pCol, regOut);
+        pParse->iSelfTab = savedSelfTab;
+        pCol->colFlags &= ~COLFLAG_BUSY;
+      }
+      return;
+#endif
+    }else if( !HasRowid(pTab) ){
+      testcase( iCol!=sqlite3TableColumnToStorage(pTab, iCol) );
+      x = sqlite3TableColumnToIndex(sqlite3PrimaryKeyIndex(pTab), iCol);
+      op = OP_Column;
+    }else{
+      x = sqlite3TableColumnToStorage(pTab,iCol);
+      testcase( x!=iCol );
+      op = OP_Column;
     }
     sqlite3VdbeAddOp3(v, op, iTabCur, x, regOut);
-  }
-  if( iCol>=0 ){
     sqlite3ColumnDefault(v, pTab, iCol, regOut);
   }
 }
@@ -105411,11 +108021,11 @@ SQLITE_PRIVATE int sqlite3ExprCodeGetColumn(
   int iReg,        /* Store results here */
   u8 p5            /* P5 value for OP_Column + FLAGS */
 ){
-  Vdbe *v = pParse->pVdbe;
-  assert( v!=0 );
-  sqlite3ExprCodeGetColumnOfTable(v, pTab, iTable, iColumn, iReg);
+  assert( pParse->pVdbe!=0 );
+  sqlite3ExprCodeGetColumnOfTable(pParse->pVdbe, pTab, iTable, iColumn, iReg);
   if( p5 ){
-    sqlite3VdbeChangeP5(v, p5);
+    VdbeOp *pOp = sqlite3VdbeGetOp(pParse->pVdbe,-1);
+    if( pOp->opcode==OP_Column ) pOp->p5 = p5;
   }
   return iReg;
 }
@@ -105425,7 +108035,6 @@ SQLITE_PRIVATE int sqlite3ExprCodeGetColumn(
 ** over to iTo..iTo+nReg-1.
 */
 SQLITE_PRIVATE void sqlite3ExprCodeMove(Parse *pParse, int iFrom, int iTo, int nReg){
-  assert( iFrom>=iTo+nReg || iFrom+nReg<=iTo );
   sqlite3VdbeAddOp3(pParse->pVdbe, OP_Move, iFrom, iTo, nReg);
 }
 
@@ -105477,6 +108086,124 @@ static int exprCodeVector(Parse *pParse, Expr *p, int *piFreeable){
   return iResult;
 }
 
+/*
+** If the last opcode is a OP_Copy, then set the do-not-merge flag (p5)
+** so that a subsequent copy will not be merged into this one.
+*/
+static void setDoNotMergeFlagOnCopy(Vdbe *v){
+  if( sqlite3VdbeGetOp(v, -1)->opcode==OP_Copy ){
+    sqlite3VdbeChangeP5(v, 1);  /* Tag trailing OP_Copy as not mergable */
+  }
+}
+
+/*
+** Generate code to implement special SQL functions that are implemented
+** in-line rather than by using the usual callbacks.
+*/
+static int exprCodeInlineFunction(
+  Parse *pParse,        /* Parsing context */
+  ExprList *pFarg,      /* List of function arguments */
+  int iFuncId,          /* Function ID.  One of the INTFUNC_... values */
+  int target            /* Store function result in this register */
+){
+  int nFarg;
+  Vdbe *v = pParse->pVdbe;
+  assert( v!=0 );
+  assert( pFarg!=0 );
+  nFarg = pFarg->nExpr;
+  assert( nFarg>0 );  /* All in-line functions have at least one argument */
+  switch( iFuncId ){
+    case INLINEFUNC_coalesce: {
+      /* Attempt a direct implementation of the built-in COALESCE() and
+      ** IFNULL() functions.  This avoids unnecessary evaluation of
+      ** arguments past the first non-NULL argument.
+      */
+      int endCoalesce = sqlite3VdbeMakeLabel(pParse);
+      int i;
+      assert( nFarg>=2 );
+      sqlite3ExprCode(pParse, pFarg->a[0].pExpr, target);
+      for(i=1; i<nFarg; i++){
+        sqlite3VdbeAddOp2(v, OP_NotNull, target, endCoalesce);
+        VdbeCoverage(v);
+        sqlite3ExprCode(pParse, pFarg->a[i].pExpr, target);
+      }
+      setDoNotMergeFlagOnCopy(v);
+      sqlite3VdbeResolveLabel(v, endCoalesce);
+      break;
+    }
+    case INLINEFUNC_iif: {
+      Expr caseExpr;
+      memset(&caseExpr, 0, sizeof(caseExpr));
+      caseExpr.op = TK_CASE;
+      caseExpr.x.pList = pFarg;
+      return sqlite3ExprCodeTarget(pParse, &caseExpr, target);
+    }
+
+    default: {
+      /* The UNLIKELY() function is a no-op.  The result is the value
+      ** of the first argument.
+      */
+      assert( nFarg==1 || nFarg==2 );
+      target = sqlite3ExprCodeTarget(pParse, pFarg->a[0].pExpr, target);
+      break;
+    }
+
+  /***********************************************************************
+  ** Test-only SQL functions that are only usable if enabled
+  ** via SQLITE_TESTCTRL_INTERNAL_FUNCTIONS
+  */
+    case INLINEFUNC_expr_compare: {
+      /* Compare two expressions using sqlite3ExprCompare() */
+      assert( nFarg==2 );
+      sqlite3VdbeAddOp2(v, OP_Integer,
+         sqlite3ExprCompare(0,pFarg->a[0].pExpr, pFarg->a[1].pExpr,-1),
+         target);
+      break;
+    }
+
+    case INLINEFUNC_expr_implies_expr: {
+      /* Compare two expressions using sqlite3ExprImpliesExpr() */
+      assert( nFarg==2 );
+      sqlite3VdbeAddOp2(v, OP_Integer,
+         sqlite3ExprImpliesExpr(pParse,pFarg->a[0].pExpr, pFarg->a[1].pExpr,-1),
+         target);
+      break;
+    }
+
+    case INLINEFUNC_implies_nonnull_row: {
+      /* REsult of sqlite3ExprImpliesNonNullRow() */
+      Expr *pA1;
+      assert( nFarg==2 );
+      pA1 = pFarg->a[1].pExpr;
+      if( pA1->op==TK_COLUMN ){
+        sqlite3VdbeAddOp2(v, OP_Integer,
+           sqlite3ExprImpliesNonNullRow(pFarg->a[0].pExpr,pA1->iTable),
+           target);
+      }else{
+        sqlite3VdbeAddOp2(v, OP_Null, 0, target);
+      }
+      break;
+    }
+
+#ifdef SQLITE_DEBUG
+    case INLINEFUNC_affinity: {
+      /* The AFFINITY() function evaluates to a string that describes
+      ** the type affinity of the argument.  This is used for testing of
+      ** the SQLite type logic.
+      */
+      const char *azAff[] = { "blob", "text", "numeric", "integer", "real" };
+      char aff;
+      assert( nFarg==1 );
+      aff = sqlite3ExprAffinity(pFarg->a[0].pExpr);
+      sqlite3VdbeLoadString(v, target,
+              (aff<=SQLITE_AFF_NONE) ? "none" : azAff[aff-SQLITE_AFF_BLOB]);
+      break;
+    }
+#endif
+  }
+  return target;
+}
+
 
 /*
 ** Generate code into the current Vdbe to evaluate the given
@@ -105500,33 +108227,45 @@ SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse *pParse, Expr *pExpr, int target)
   int p5 = 0;
 
   assert( target>0 && target<=pParse->nMem );
-  if( v==0 ){
-    assert( pParse->db->mallocFailed );
-    return 0;
-  }
+  assert( v!=0 );
 
 expr_code_doover:
   if( pExpr==0 ){
     op = TK_NULL;
   }else{
+    assert( !ExprHasVVAProperty(pExpr,EP_Immutable) );
     op = pExpr->op;
   }
   switch( op ){
     case TK_AGG_COLUMN: {
       AggInfo *pAggInfo = pExpr->pAggInfo;
-      struct AggInfo_col *pCol = &pAggInfo->aCol[pExpr->iAgg];
+      struct AggInfo_col *pCol;
+      assert( pAggInfo!=0 );
+      assert( pExpr->iAgg>=0 && pExpr->iAgg<pAggInfo->nColumn );
+      pCol = &pAggInfo->aCol[pExpr->iAgg];
       if( !pAggInfo->directMode ){
         assert( pCol->iMem>0 );
         return pCol->iMem;
       }else if( pAggInfo->useSortingIdx ){
+        Table *pTab = pCol->pTab;
         sqlite3VdbeAddOp3(v, OP_Column, pAggInfo->sortingIdxPTab,
                               pCol->iSorterColumn, target);
+        if( pCol->iColumn<0 ){
+          VdbeComment((v,"%s.rowid",pTab->zName));
+        }else{
+          VdbeComment((v,"%s.%s",pTab->zName,pTab->aCol[pCol->iColumn].zName));
+          if( pTab->aCol[pCol->iColumn].affinity==SQLITE_AFF_REAL ){
+            sqlite3VdbeAddOp1(v, OP_RealAffinity, target);
+          }
+        }
         return target;
       }
       /* Otherwise, fall thru into the TK_COLUMN case */
+      /* no break */ deliberate_fall_through
     }
     case TK_COLUMN: {
       int iTab = pExpr->iTable;
+      int iReg;
       if( ExprHasProperty(pExpr, EP_FixedCol) ){
         /* This COLUMN expression is really a constant due to WHERE clause
         ** constraints, and that constant is coded by the pExpr->pLeft
@@ -105534,16 +108273,17 @@ expr_code_doover:
         ** datatype by applying the Affinity of the table column to the
         ** constant.
         */
-        int iReg = sqlite3ExprCodeTarget(pParse, pExpr->pLeft,target);
-        int aff = sqlite3TableColumnAffinity(pExpr->y.pTab, pExpr->iColumn);
+        int aff;
+        iReg = sqlite3ExprCodeTarget(pParse, pExpr->pLeft,target);
+        if( pExpr->y.pTab ){
+          aff = sqlite3TableColumnAffinity(pExpr->y.pTab, pExpr->iColumn);
+        }else{
+          aff = pExpr->affExpr;
+        }
         if( aff>SQLITE_AFF_BLOB ){
           static const char zAff[] = "B\000C\000D\000E";
           assert( SQLITE_AFF_BLOB=='A' );
           assert( SQLITE_AFF_TEXT=='B' );
-          if( iReg!=target ){
-            sqlite3VdbeAddOp2(v, OP_SCopy, iReg, target);
-            iReg = target;
-          }
           sqlite3VdbeAddOp4(v, OP_Affinity, iReg, 1, 0,
                             &zAff[(aff-'B')*2], P4_STATIC);
         }
@@ -105551,19 +108291,46 @@ expr_code_doover:
       }
       if( iTab<0 ){
         if( pParse->iSelfTab<0 ){
-          /* Generating CHECK constraints or inserting into partial index */
-          assert( pExpr->y.pTab!=0 );
-          assert( pExpr->iColumn>=XN_ROWID );
-          assert( pExpr->iColumn<pExpr->y.pTab->nCol );
-          if( pExpr->iColumn>=0
-            && pExpr->y.pTab->aCol[pExpr->iColumn].affinity==SQLITE_AFF_REAL
-          ){
-            sqlite3VdbeAddOp2(v, OP_SCopy, pExpr->iColumn - pParse->iSelfTab,
-                              target);
+          /* Other columns in the same row for CHECK constraints or
+          ** generated columns or for inserting into partial index.
+          ** The row is unpacked into registers beginning at
+          ** 0-(pParse->iSelfTab).  The rowid (if any) is in a register
+          ** immediately prior to the first column.
+          */
+          Column *pCol;
+          Table *pTab = pExpr->y.pTab;
+          int iSrc;
+          int iCol = pExpr->iColumn;
+          assert( pTab!=0 );
+          assert( iCol>=XN_ROWID );
+          assert( iCol<pTab->nCol );
+          if( iCol<0 ){
+            return -1-pParse->iSelfTab;
+          }
+          pCol = pTab->aCol + iCol;
+          testcase( iCol!=sqlite3TableColumnToStorage(pTab,iCol) );
+          iSrc = sqlite3TableColumnToStorage(pTab, iCol) - pParse->iSelfTab;
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+          if( pCol->colFlags & COLFLAG_GENERATED ){
+            if( pCol->colFlags & COLFLAG_BUSY ){
+              sqlite3ErrorMsg(pParse, "generated column loop on \"%s\"",
+                              pCol->zName);
+              return 0;
+            }
+            pCol->colFlags |= COLFLAG_BUSY;
+            if( pCol->colFlags & COLFLAG_NOTAVAIL ){
+              sqlite3ExprCodeGeneratedColumn(pParse, pCol, iSrc);
+            }
+            pCol->colFlags &= ~(COLFLAG_BUSY|COLFLAG_NOTAVAIL);
+            return iSrc;
+          }else
+#endif /* SQLITE_OMIT_GENERATED_COLUMNS */
+          if( pCol->affinity==SQLITE_AFF_REAL ){
+            sqlite3VdbeAddOp2(v, OP_SCopy, iSrc, target);
             sqlite3VdbeAddOp1(v, OP_RealAffinity, target);
             return target;
           }else{
-            return pExpr->iColumn - pParse->iSelfTab;
+            return iSrc;
           }
         }else{
           /* Coding an expression that is part of an index where column names
@@ -105571,9 +108338,13 @@ expr_code_doover:
           iTab = pParse->iSelfTab - 1;
         }
       }
-      return sqlite3ExprCodeGetColumn(pParse, pExpr->y.pTab,
+      iReg = sqlite3ExprCodeGetColumn(pParse, pExpr->y.pTab,
                                pExpr->iColumn, iTab, target,
                                pExpr->op2);
+      if( pExpr->y.pTab==0 && pExpr->affExpr==SQLITE_AFF_REAL ){
+        sqlite3VdbeAddOp1(v, OP_RealAffinity, iReg);
+      }
+      return iReg;
     }
     case TK_INTEGER: {
       codeInteger(pParse, pExpr, 0, target);
@@ -105595,7 +108366,12 @@ expr_code_doover:
       sqlite3VdbeLoadString(v, target, pExpr->u.zToken);
       return target;
     }
-    case TK_NULL: {
+    default: {
+      /* Make NULL the default case so that if a bug causes an illegal
+      ** Expr node to be passed into this function, it will be handled
+      ** sanely and not crash.  But keep the assert() to bring the problem
+      ** to the attention of the developers. */
+      assert( op==TK_NULL );
       sqlite3VdbeAddOp2(v, OP_Null, 0, target);
       return target;
     }
@@ -105622,7 +108398,7 @@ expr_code_doover:
       sqlite3VdbeAddOp2(v, OP_Variable, pExpr->iColumn, target);
       if( pExpr->u.zToken[1]!=0 ){
         const char *z = sqlite3VListNumToName(pParse->pVList, pExpr->iColumn);
-        assert( pExpr->u.zToken[0]=='?' || strcmp(pExpr->u.zToken, z)==0 );
+        assert( pExpr->u.zToken[0]=='?' || (z && !strcmp(pExpr->u.zToken, z)) );
         pParse->pVList[0] = 0; /* Indicate VList may no longer be enlarged */
         sqlite3VdbeAppendP4(v, (char*)z, P4_STATIC);
       }
@@ -105662,7 +108438,8 @@ expr_code_doover:
         r1 = sqlite3ExprCodeTemp(pParse, pLeft, &regFree1);
         r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, &regFree2);
         codeCompare(pParse, pLeft, pExpr->pRight, op,
-            r1, r2, inReg, SQLITE_STOREP2 | p5);
+            r1, r2, inReg, SQLITE_STOREP2 | p5,
+            ExprHasProperty(pExpr,EP_Commuted));
         assert(TK_LT==OP_Lt); testcase(op==OP_Lt); VdbeCoverageIf(v,op==OP_Lt);
         assert(TK_LE==OP_Le); testcase(op==OP_Le); VdbeCoverageIf(v,op==OP_Le);
         assert(TK_GT==OP_Gt); testcase(op==OP_Gt); VdbeCoverageIf(v,op==OP_Gt);
@@ -105720,6 +108497,7 @@ expr_code_doover:
         tempX.op = TK_INTEGER;
         tempX.flags = EP_IntValue|EP_TokenOnly;
         tempX.u.iValue = 0;
+        ExprClearVVAProperties(&tempX);
         r1 = sqlite3ExprCodeTemp(pParse, &tempX, &regFree1);
         r2 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, &regFree2);
         sqlite3VdbeAddOp3(v, OP_Subtract, r2, r1, target);
@@ -105765,7 +108543,10 @@ expr_code_doover:
     }
     case TK_AGG_FUNCTION: {
       AggInfo *pInfo = pExpr->pAggInfo;
-      if( pInfo==0 ){
+      if( pInfo==0
+       || NEVER(pExpr->iAgg<0)
+       || NEVER(pExpr->iAgg>=pInfo->nFunc)
+      ){
         assert( !ExprHasProperty(pExpr, EP_IntValue) );
         sqlite3ErrorMsg(pParse, "misuse of aggregate: %s()", pExpr->u.zToken);
       }else{
@@ -105791,16 +108572,13 @@ expr_code_doover:
 #endif
 
       if( ConstFactorOk(pParse) && sqlite3ExprIsConstantNotJoin(pExpr) ){
-        /* SQL functions can be expensive. So try to move constant functions
-        ** out of the inner loop, even if that means an extra OP_Copy. */
-        return sqlite3ExprCodeAtInit(pParse, pExpr, -1);
+        /* SQL functions can be expensive. So try to avoid running them
+        ** multiple times if we know they always give the same result */
+        return sqlite3ExprCodeRunJustOnce(pParse, pExpr, -1);
       }
       assert( !ExprHasProperty(pExpr, EP_xIsSelect) );
-      if( ExprHasProperty(pExpr, EP_TokenOnly) ){
-        pFarg = 0;
-      }else{
-        pFarg = pExpr->x.pList;
-      }
+      assert( !ExprHasProperty(pExpr, EP_TokenOnly) );
+      pFarg = pExpr->x.pList;
       nFarg = pFarg ? pFarg->nExpr : 0;
       assert( !ExprHasProperty(pExpr, EP_IntValue) );
       zId = pExpr->u.zToken;
@@ -105814,47 +108592,14 @@ expr_code_doover:
         sqlite3ErrorMsg(pParse, "unknown function: %s()", zId);
         break;
       }
-
-      /* Attempt a direct implementation of the built-in COALESCE() and
-      ** IFNULL() functions.  This avoids unnecessary evaluation of
-      ** arguments past the first non-NULL argument.
-      */
-      if( pDef->funcFlags & SQLITE_FUNC_COALESCE ){
-        int endCoalesce = sqlite3VdbeMakeLabel(pParse);
-        assert( nFarg>=2 );
-        sqlite3ExprCode(pParse, pFarg->a[0].pExpr, target);
-        for(i=1; i<nFarg; i++){
-          sqlite3VdbeAddOp2(v, OP_NotNull, target, endCoalesce);
-          VdbeCoverage(v);
-          sqlite3ExprCode(pParse, pFarg->a[i].pExpr, target);
-        }
-        sqlite3VdbeResolveLabel(v, endCoalesce);
-        break;
-      }
-
-      /* The UNLIKELY() function is a no-op.  The result is the value
-      ** of the first argument.
-      */
-      if( pDef->funcFlags & SQLITE_FUNC_UNLIKELY ){
-        assert( nFarg>=1 );
-        return sqlite3ExprCodeTarget(pParse, pFarg->a[0].pExpr, target);
-      }
-
-#ifdef SQLITE_DEBUG
-      /* The AFFINITY() function evaluates to a string that describes
-      ** the type affinity of the argument.  This is used for testing of
-      ** the SQLite type logic.
-      */
-      if( pDef->funcFlags & SQLITE_FUNC_AFFINITY ){
-        const char *azAff[] = { "blob", "text", "numeric", "integer", "real" };
-        char aff;
-        assert( nFarg==1 );
-        aff = sqlite3ExprAffinity(pFarg->a[0].pExpr);
-        sqlite3VdbeLoadString(v, target,
-                (aff<=SQLITE_AFF_NONE) ? "none" : azAff[aff-SQLITE_AFF_BLOB]);
-        return target;
+      if( pDef->funcFlags & SQLITE_FUNC_INLINE ){
+        assert( (pDef->funcFlags & SQLITE_FUNC_UNSAFE)==0 );
+        assert( (pDef->funcFlags & SQLITE_FUNC_DIRECT)==0 );
+        return exprCodeInlineFunction(pParse, pFarg,
+             SQLITE_PTR_TO_INT(pDef->pUserData), target);
+      }else if( pDef->funcFlags & (SQLITE_FUNC_DIRECT|SQLITE_FUNC_UNSAFE) ){
+        sqlite3ExprFunctionUsable(pParse, pExpr, pDef);
       }
-#endif
 
       for(i=0; i<nFarg; i++){
         if( i<32 && sqlite3ExprIsConstant(pFarg->a[i].pExpr) ){
@@ -105931,12 +108676,15 @@ expr_code_doover:
       }else
 #endif
       {
-        sqlite3VdbeAddOp4(v, pParse->iSelfTab ? OP_PureFunc0 : OP_Function0,
-                          constMask, r1, target, (char*)pDef, P4_FUNCDEF);
-        sqlite3VdbeChangeP5(v, (u8)nFarg);
+        sqlite3VdbeAddFunctionCall(pParse, constMask, r1, target, nFarg,
+                                   pDef, pExpr->op2);
       }
-      if( nFarg && constMask==0 ){
-        sqlite3ReleaseTempRange(pParse, r1, nFarg);
+      if( nFarg ){
+        if( constMask==0 ){
+          sqlite3ReleaseTempRange(pParse, r1, nFarg);
+        }else{
+          sqlite3VdbeReleaseRegisters(pParse, r1, nFarg, constMask, 1);
+        }
       }
       return target;
     }
@@ -105946,7 +108694,9 @@ expr_code_doover:
       int nCol;
       testcase( op==TK_EXISTS );
       testcase( op==TK_SELECT );
-      if( op==TK_SELECT && (nCol = pExpr->x.pSelect->pEList->nExpr)!=1 ){
+      if( pParse->db->mallocFailed ){
+        return 0;
+      }else if( op==TK_SELECT && (nCol = pExpr->x.pSelect->pEList->nExpr)!=1 ){
         sqlite3SubselectError(pParse, nCol, 1);
       }else{
         return sqlite3CodeSubselect(pParse, pExpr);
@@ -106030,17 +108780,19 @@ expr_code_doover:
       **   p1==2   ->    old.b         p1==5   ->    new.b
       */
       Table *pTab = pExpr->y.pTab;
-      int p1 = pExpr->iTable * (pTab->nCol+1) + 1 + pExpr->iColumn;
+      int iCol = pExpr->iColumn;
+      int p1 = pExpr->iTable * (pTab->nCol+1) + 1
+                     + sqlite3TableColumnToStorage(pTab, iCol);
 
       assert( pExpr->iTable==0 || pExpr->iTable==1 );
-      assert( pExpr->iColumn>=-1 && pExpr->iColumn<pTab->nCol );
-      assert( pTab->iPKey<0 || pExpr->iColumn!=pTab->iPKey );
+      assert( iCol>=-1 && iCol<pTab->nCol );
+      assert( pTab->iPKey<0 || iCol!=pTab->iPKey );
       assert( p1>=0 && p1<(pTab->nCol*2+2) );
 
       sqlite3VdbeAddOp2(v, OP_Param, p1, target);
       VdbeComment((v, "r[%d]=%s.%s", target,
         (pExpr->iTable ? "new" : "old"),
-        (pExpr->iColumn<0 ? "rowid" : pExpr->y.pTab->aCol[pExpr->iColumn].zName)
+        (pExpr->iColumn<0 ? "rowid" : pExpr->y.pTab->aCol[iCol].zName)
       ));
 
 #ifndef SQLITE_OMIT_FLOATING_POINT
@@ -106049,9 +108801,7 @@ expr_code_doover:
       **
       ** EVIDENCE-OF: R-60985-57662 SQLite will convert the value back to
       ** floating point when extracting it from the record.  */
-      if( pExpr->iColumn>=0
-       && pTab->aCol[pExpr->iColumn].affinity==SQLITE_AFF_REAL
-      ){
+      if( iCol>=0 && pTab->aCol[iCol].affinity==SQLITE_AFF_REAL ){
         sqlite3VdbeAddOp1(v, OP_RealAffinity, target);
       }
 #endif
@@ -106106,7 +108856,7 @@ expr_code_doover:
     ** or if there is no matching Ei, the ELSE term Y, or if there is
     ** no ELSE term, NULL.
     */
-    default: assert( op==TK_CASE ); {
+    case TK_CASE: {
       int endLabel;                     /* GOTO label for end of CASE stmt */
       int nextCase;                     /* GOTO label for next WHEN clause */
       int nExpr;                        /* 2x number of WHEN terms */
@@ -106165,6 +108915,7 @@ expr_code_doover:
         sqlite3VdbeAddOp2(v, OP_Null, 0, target);
       }
       sqlite3ExprDelete(db, pDel);
+      setDoNotMergeFlagOnCopy(v);
       sqlite3VdbeResolveLabel(v, endLabel);
       break;
     }
@@ -106175,7 +108926,7 @@ expr_code_doover:
            || pExpr->affExpr==OE_Fail
            || pExpr->affExpr==OE_Ignore
       );
-      if( !pParse->pTriggerTab ){
+      if( !pParse->pTriggerTab && !pParse->nested ){
         sqlite3ErrorMsg(pParse,
                        "RAISE() may only be used within a trigger-program");
         return 0;
@@ -106189,8 +108940,9 @@ expr_code_doover:
             v, OP_Halt, SQLITE_OK, OE_Ignore, 0, pExpr->u.zToken,0);
         VdbeCoverage(v);
       }else{
-        sqlite3HaltConstraint(pParse, SQLITE_CONSTRAINT_TRIGGER,
-                              pExpr->affExpr, pExpr->u.zToken, 0, 0);
+        sqlite3HaltConstraint(pParse,
+             pParse->pTriggerTab ? SQLITE_CONSTRAINT_TRIGGER : SQLITE_ERROR,
+             pExpr->affExpr, pExpr->u.zToken, 0, 0);
       }
 
       break;
@@ -106203,15 +108955,23 @@ expr_code_doover:
 }
 
 /*
-** Factor out the code of the given expression to initialization time.
+** Generate code that will evaluate expression pExpr just one time
+** per prepared statement execution.
+**
+** If the expression uses functions (that might throw an exception) then
+** guard them with an OP_Once opcode to ensure that the code is only executed
+** once. If no functions are involved, then factor the code out and put it at
+** the end of the prepared statement in the initialization section.
 **
 ** If regDest>=0 then the result is always stored in that register and the
 ** result is not reusable.  If regDest<0 then this routine is free to
 ** store the value whereever it wants.  The register where the expression
-** is stored is returned.  When regDest<0, two identical expressions will
-** code to the same register.
+** is stored is returned.  When regDest<0, two identical expressions might
+** code to the same register, if they do not contain function calls and hence
+** are factored out into the initialization section at the end of the
+** prepared statement.
 */
-SQLITE_PRIVATE int sqlite3ExprCodeAtInit(
+SQLITE_PRIVATE int sqlite3ExprCodeRunJustOnce(
   Parse *pParse,    /* Parsing context */
   Expr *pExpr,      /* The expression to code when the VDBE initializes */
   int regDest       /* Store the value in this register */
@@ -106229,14 +108989,29 @@ SQLITE_PRIVATE int sqlite3ExprCodeAtInit(
     }
   }
   pExpr = sqlite3ExprDup(pParse->db, pExpr, 0);
-  p = sqlite3ExprListAppend(pParse, p, pExpr);
-  if( p ){
-     struct ExprList_item *pItem = &p->a[p->nExpr-1];
-     pItem->reusable = regDest<0;
-     if( regDest<0 ) regDest = ++pParse->nMem;
-     pItem->u.iConstExprReg = regDest;
+  if( pExpr!=0 && ExprHasProperty(pExpr, EP_HasFunc) ){
+    Vdbe *v = pParse->pVdbe;
+    int addr;
+    assert( v );
+    addr = sqlite3VdbeAddOp0(v, OP_Once); VdbeCoverage(v);
+    pParse->okConstFactor = 0;
+    if( !pParse->db->mallocFailed ){
+      if( regDest<0 ) regDest = ++pParse->nMem;
+      sqlite3ExprCode(pParse, pExpr, regDest);
+    }
+    pParse->okConstFactor = 1;
+    sqlite3ExprDelete(pParse->db, pExpr);
+    sqlite3VdbeJumpHere(v, addr);
+  }else{
+    p = sqlite3ExprListAppend(pParse, p, pExpr);
+    if( p ){
+       struct ExprList_item *pItem = &p->a[p->nExpr-1];
+       pItem->reusable = regDest<0;
+       if( regDest<0 ) regDest = ++pParse->nMem;
+       pItem->u.iConstExprReg = regDest;
+    }
+    pParse->pConstExpr = p;
   }
-  pParse->pConstExpr = p;
   return regDest;
 }
 
@@ -106261,7 +109036,7 @@ SQLITE_PRIVATE int sqlite3ExprCodeTemp(Parse *pParse, Expr *pExpr, int *pReg){
    && sqlite3ExprIsConstantNotJoin(pExpr)
   ){
     *pReg  = 0;
-    r2 = sqlite3ExprCodeAtInit(pParse, pExpr, -1);
+    r2 = sqlite3ExprCodeRunJustOnce(pParse, pExpr, -1);
   }else{
     int r1 = sqlite3GetTempReg(pParse);
     r2 = sqlite3ExprCodeTarget(pParse, pExpr, r1);
@@ -106283,15 +109058,19 @@ SQLITE_PRIVATE int sqlite3ExprCodeTemp(Parse *pParse, Expr *pExpr, int *pReg){
 SQLITE_PRIVATE void sqlite3ExprCode(Parse *pParse, Expr *pExpr, int target){
   int inReg;
 
+  assert( pExpr==0 || !ExprHasVVAProperty(pExpr,EP_Immutable) );
   assert( target>0 && target<=pParse->nMem );
-  if( pExpr && pExpr->op==TK_REGISTER ){
-    sqlite3VdbeAddOp2(pParse->pVdbe, OP_Copy, pExpr->iTable, target);
-  }else{
-    inReg = sqlite3ExprCodeTarget(pParse, pExpr, target);
-    assert( pParse->pVdbe!=0 || pParse->db->mallocFailed );
-    if( inReg!=target && pParse->pVdbe ){
-      sqlite3VdbeAddOp2(pParse->pVdbe, OP_SCopy, inReg, target);
+  assert( pParse->pVdbe!=0 || pParse->db->mallocFailed );
+  if( pParse->pVdbe==0 ) return;
+  inReg = sqlite3ExprCodeTarget(pParse, pExpr, target);
+  if( inReg!=target ){
+    u8 op;
+    if( ExprHasProperty(pExpr,EP_Subquery) ){
+      op = OP_Copy;
+    }else{
+      op = OP_SCopy;
     }
+    sqlite3VdbeAddOp2(pParse->pVdbe, op, inReg, target);
   }
 }
 
@@ -106315,37 +109094,13 @@ SQLITE_PRIVATE void sqlite3ExprCodeCopy(Parse *pParse, Expr *pExpr, int target){
 */
 SQLITE_PRIVATE void sqlite3ExprCodeFactorable(Parse *pParse, Expr *pExpr, int target){
   if( pParse->okConstFactor && sqlite3ExprIsConstantNotJoin(pExpr) ){
-    sqlite3ExprCodeAtInit(pParse, pExpr, target);
+    sqlite3ExprCodeRunJustOnce(pParse, pExpr, target);
   }else{
-    sqlite3ExprCode(pParse, pExpr, target);
+    sqlite3ExprCodeCopy(pParse, pExpr, target);
   }
 }
 
 /*
-** Generate code that evaluates the given expression and puts the result
-** in register target.
-**
-** Also make a copy of the expression results into another "cache" register
-** and modify the expression so that the next time it is evaluated,
-** the result is a copy of the cache register.
-**
-** This routine is used for expressions that are used multiple
-** times.  They are evaluated once and the results of the expression
-** are reused.
-*/
-SQLITE_PRIVATE void sqlite3ExprCodeAndCache(Parse *pParse, Expr *pExpr, int target){
-  Vdbe *v = pParse->pVdbe;
-  int iMem;
-
-  assert( target>0 );
-  assert( pExpr->op!=TK_REGISTER );
-  sqlite3ExprCode(pParse, pExpr, target);
-  iMem = ++pParse->nMem;
-  sqlite3VdbeAddOp2(v, OP_Copy, target, iMem);
-  exprToRegister(pExpr, iMem);
-}
-
-/*
 ** Generate code that pushes the value of every element of the given
 ** expression list into a sequence of registers beginning at target.
 **
@@ -106399,7 +109154,7 @@ SQLITE_PRIVATE int sqlite3ExprCodeExprList(
     }else if( (flags & SQLITE_ECEL_FACTOR)!=0
            && sqlite3ExprIsConstantNotJoin(pExpr)
     ){
-      sqlite3ExprCodeAtInit(pParse, pExpr, target+i);
+      sqlite3ExprCodeRunJustOnce(pParse, pExpr, target+i);
     }else{
       int inReg = sqlite3ExprCodeTarget(pParse, pExpr, target+i);
       if( inReg!=target+i ){
@@ -106408,6 +109163,7 @@ SQLITE_PRIVATE int sqlite3ExprCodeExprList(
          && (pOp=sqlite3VdbeGetOp(v, -1))->opcode==OP_Copy
          && pOp->p1+pOp->p3+1==inReg
          && pOp->p2+pOp->p3+1==target+i
+         && pOp->p5==0  /* The do-not-merge flag must be clear */
         ){
           pOp->p3++;
         }else{
@@ -106521,6 +109277,7 @@ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int
   assert( jumpIfNull==SQLITE_JUMPIFNULL || jumpIfNull==0 );
   if( NEVER(v==0) )     return;  /* Existence of VDBE checked by caller */
   if( NEVER(pExpr==0) ) return;  /* No way this can happen */
+  assert( !ExprHasVVAProperty(pExpr, EP_Immutable) );
   op = pExpr->op;
   switch( op ){
     case TK_AND:
@@ -106570,7 +109327,7 @@ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int
       testcase( op==TK_ISNOT );
       op = (op==TK_IS) ? TK_EQ : TK_NE;
       jumpIfNull = SQLITE_NULLEQ;
-      /* Fall thru */
+      /* no break */ deliberate_fall_through
     case TK_LT:
     case TK_LE:
     case TK_GT:
@@ -106582,7 +109339,7 @@ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse *pParse, Expr *pExpr, int dest, int
       r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, &regFree1);
       r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, &regFree2);
       codeCompare(pParse, pExpr->pLeft, pExpr->pRight, op,
-                  r1, r2, dest, jumpIfNull);
+                  r1, r2, dest, jumpIfNull, ExprHasProperty(pExpr,EP_Commuted));
       assert(TK_LT==OP_Lt); testcase(op==OP_Lt); VdbeCoverageIf(v,op==OP_Lt);
       assert(TK_LE==OP_Le); testcase(op==OP_Le); VdbeCoverageIf(v,op==OP_Le);
       assert(TK_GT==OP_Gt); testcase(op==OP_Gt); VdbeCoverageIf(v,op==OP_Gt);
@@ -106662,6 +109419,7 @@ SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int
   assert( jumpIfNull==SQLITE_JUMPIFNULL || jumpIfNull==0 );
   if( NEVER(v==0) ) return; /* Existence of VDBE checked by caller */
   if( pExpr==0 )    return;
+  assert( !ExprHasVVAProperty(pExpr,EP_Immutable) );
 
   /* The value of pExpr->op and op are related as follows:
   **
@@ -106745,7 +109503,7 @@ SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int
       testcase( pExpr->op==TK_ISNOT );
       op = (pExpr->op==TK_IS) ? TK_NE : TK_EQ;
       jumpIfNull = SQLITE_NULLEQ;
-      /* Fall thru */
+      /* no break */ deliberate_fall_through
     case TK_LT:
     case TK_LE:
     case TK_GT:
@@ -106757,7 +109515,7 @@ SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse *pParse, Expr *pExpr, int dest, int
       r1 = sqlite3ExprCodeTemp(pParse, pExpr->pLeft, &regFree1);
       r2 = sqlite3ExprCodeTemp(pParse, pExpr->pRight, &regFree2);
       codeCompare(pParse, pExpr->pLeft, pExpr->pRight, op,
-                  r1, r2, dest, jumpIfNull);
+                  r1, r2, dest, jumpIfNull,ExprHasProperty(pExpr,EP_Commuted));
       assert(TK_LT==OP_Lt); testcase(op==OP_Lt); VdbeCoverageIf(v,op==OP_Lt);
       assert(TK_LE==OP_Le); testcase(op==OP_Le); VdbeCoverageIf(v,op==OP_Le);
       assert(TK_GT==OP_Gt); testcase(op==OP_Gt); VdbeCoverageIf(v,op==OP_Gt);
@@ -106943,8 +109701,9 @@ SQLITE_PRIVATE int sqlite3ExprCompare(Parse *pParse, Expr *pA, Expr *pB, int iTa
       return 2;
     }
   }
-  if( (pA->flags & EP_Distinct)!=(pB->flags & EP_Distinct) ) return 2;
-  if( (combinedFlags & EP_TokenOnly)==0 ){
+  if( (pA->flags & (EP_Distinct|EP_Commuted))
+     != (pB->flags & (EP_Distinct|EP_Commuted)) ) return 2;
+  if( ALWAYS((combinedFlags & EP_TokenOnly)==0) ){
     if( combinedFlags & EP_xIsSelect ) return 2;
     if( (combinedFlags & EP_FixedCol)==0
      && sqlite3ExprCompare(pParse, pA->pLeft, pB->pLeft, iTab) ) return 2;
@@ -106952,21 +109711,22 @@ SQLITE_PRIVATE int sqlite3ExprCompare(Parse *pParse, Expr *pA, Expr *pB, int iTa
     if( sqlite3ExprListCompare(pA->x.pList, pB->x.pList, iTab) ) return 2;
     if( pA->op!=TK_STRING
      && pA->op!=TK_TRUEFALSE
-     && (combinedFlags & EP_Reduced)==0
+     && ALWAYS((combinedFlags & EP_Reduced)==0)
     ){
       if( pA->iColumn!=pB->iColumn ) return 2;
-      if( pA->op2!=pB->op2 ) return 2;
-      if( pA->op!=TK_IN
-       && pA->iTable!=pB->iTable
-       && (pA->iTable!=iTab || NEVER(pB->iTable>=0)) ) return 2;
+      if( pA->op2!=pB->op2 && pA->op==TK_TRUTH ) return 2;
+      if( pA->op!=TK_IN && pA->iTable!=pB->iTable && pA->iTable!=iTab ){
+        return 2;
+      }
     }
   }
   return 0;
 }
 
 /*
-** Compare two ExprList objects.  Return 0 if they are identical and
-** non-zero if they differ in any way.
+** Compare two ExprList objects.  Return 0 if they are identical, 1
+** if they are certainly different, or 2 if it is not possible to
+** determine if they are identical or not.
 **
 ** If any subelement of pB has Expr.iTable==(-1) then it is allowed
 ** to compare equal to an equivalent element in pA with Expr.iTable==iTab.
@@ -106985,10 +109745,11 @@ SQLITE_PRIVATE int sqlite3ExprListCompare(ExprList *pA, ExprList *pB, int iTab){
   if( pA==0 || pB==0 ) return 1;
   if( pA->nExpr!=pB->nExpr ) return 1;
   for(i=0; i<pA->nExpr; i++){
+    int res;
     Expr *pExprA = pA->a[i].pExpr;
     Expr *pExprB = pB->a[i].pExpr;
     if( pA->a[i].sortFlags!=pB->a[i].sortFlags ) return 1;
-    if( sqlite3ExprCompare(0, pExprA, pExprB, iTab) ) return 1;
+    if( (res = sqlite3ExprCompare(0, pExprA, pExprB, iTab)) ) return res;
   }
   return 0;
 }
@@ -107054,13 +109815,13 @@ static int exprImpliesNotNull(
     case TK_RSHIFT:
     case TK_CONCAT:
       seenNot = 1;
-      /* Fall thru */
+      /* no break */ deliberate_fall_through
     case TK_STAR:
     case TK_REM:
     case TK_BITAND:
     case TK_SLASH: {
       if( exprImpliesNotNull(pParse, p->pRight, pNN, iTab, seenNot) ) return 1;
-      /* Fall thru into the next case */
+      /* no break */ deliberate_fall_through
     }
     case TK_SPAN:
     case TK_COLLATE:
@@ -107125,7 +109886,7 @@ SQLITE_PRIVATE int sqlite3ExprImpliesExpr(Parse *pParse, Expr *pE1, Expr *pE2, i
 }
 
 /*
-** This is the Expr node callback for sqlite3ExprImpliesNotNullRow().
+** This is the Expr node callback for sqlite3ExprImpliesNonNullRow().
 ** If the expression node requires that the table at pWalker->iCur
 ** have one or more non-NULL column, then set pWalker->eCode to 1 and abort.
 **
@@ -107143,6 +109904,7 @@ static int impliesNotNullRow(Walker *pWalker, Expr *pExpr){
     case TK_NOTNULL:
     case TK_IS:
     case TK_OR:
+    case TK_VECTOR:
     case TK_CASE:
     case TK_IN:
     case TK_FUNCTION:
@@ -107152,6 +109914,7 @@ static int impliesNotNullRow(Walker *pWalker, Expr *pExpr){
       testcase( pExpr->op==TK_NOTNULL );
       testcase( pExpr->op==TK_IS );
       testcase( pExpr->op==TK_OR );
+      testcase( pExpr->op==TK_VECTOR );
       testcase( pExpr->op==TK_CASE );
       testcase( pExpr->op==TK_IN );
       testcase( pExpr->op==TK_FUNCTION );
@@ -107165,15 +109928,20 @@ static int impliesNotNullRow(Walker *pWalker, Expr *pExpr){
       return WRC_Prune;
 
     case TK_AND:
-      if( sqlite3ExprImpliesNonNullRow(pExpr->pLeft, pWalker->u.iCur)
-       && sqlite3ExprImpliesNonNullRow(pExpr->pRight, pWalker->u.iCur)
-      ){
-        pWalker->eCode = 1;
+      if( pWalker->eCode==0 ){
+        sqlite3WalkExpr(pWalker, pExpr->pLeft);
+        if( pWalker->eCode ){
+          pWalker->eCode = 0;
+          sqlite3WalkExpr(pWalker, pExpr->pRight);
+        }
       }
       return WRC_Prune;
 
     case TK_BETWEEN:
-      sqlite3WalkExpr(pWalker, pExpr->pLeft);
+      if( sqlite3WalkExpr(pWalker, pExpr->pLeft)==WRC_Abort ){
+        assert( pWalker->eCode );
+        return WRC_Abort;
+      }
       return WRC_Prune;
 
     /* Virtual tables are allowed to use constraints like x=NULL.  So
@@ -107184,19 +109952,26 @@ static int impliesNotNullRow(Walker *pWalker, Expr *pExpr){
     case TK_LT:
     case TK_LE:
     case TK_GT:
-    case TK_GE:
+    case TK_GE: {
+      Expr *pLeft = pExpr->pLeft;
+      Expr *pRight = pExpr->pRight;
       testcase( pExpr->op==TK_EQ );
       testcase( pExpr->op==TK_NE );
       testcase( pExpr->op==TK_LT );
       testcase( pExpr->op==TK_LE );
       testcase( pExpr->op==TK_GT );
       testcase( pExpr->op==TK_GE );
-      if( (pExpr->pLeft->op==TK_COLUMN && IsVirtual(pExpr->pLeft->y.pTab))
-       || (pExpr->pRight->op==TK_COLUMN && IsVirtual(pExpr->pRight->y.pTab))
+      /* The y.pTab=0 assignment in wherecode.c always happens after the
+      ** impliesNotNullRow() test */
+      if( (pLeft->op==TK_COLUMN && ALWAYS(pLeft->y.pTab!=0)
+                               && IsVirtual(pLeft->y.pTab))
+       || (pRight->op==TK_COLUMN && ALWAYS(pRight->y.pTab!=0)
+                               && IsVirtual(pRight->y.pTab))
       ){
-       return WRC_Prune;
+        return WRC_Prune;
       }
-
+      /* no break */ deliberate_fall_through
+    }
     default:
       return WRC_Continue;
   }
@@ -107227,14 +110002,13 @@ static int impliesNotNullRow(Walker *pWalker, Expr *pExpr){
 SQLITE_PRIVATE int sqlite3ExprImpliesNonNullRow(Expr *p, int iTab){
   Walker w;
   p = sqlite3ExprSkipCollateAndLikely(p);
-  while( p ){
-    if( p->op==TK_NOTNULL ){
-      p = p->pLeft;
-    }else if( p->op==TK_AND ){
+  if( p==0 ) return 0;
+  if( p->op==TK_NOTNULL ){
+    p = p->pLeft;
+  }else{
+    while( p->op==TK_AND ){
       if( sqlite3ExprImpliesNonNullRow(p->pLeft, iTab) ) return 1;
       p = p->pRight;
-    }else{
-      break;
     }
   }
   w.xExprCallback = impliesNotNullRow;
@@ -107266,7 +110040,7 @@ struct IdxCover {
 static int exprIdxCover(Walker *pWalker, Expr *pExpr){
   if( pExpr->op==TK_COLUMN
    && pExpr->iTable==pWalker->u.pIdxCover->iCur
-   && sqlite3ColumnOfIndex(pWalker->u.pIdxCover->pIdx, pExpr->iColumn)<0
+   && sqlite3TableColumnToIndex(pWalker->u.pIdxCover->pIdx, pExpr->iColumn)<0
   ){
     pWalker->eCode = 1;
     return WRC_Abort;
@@ -107309,20 +110083,36 @@ SQLITE_PRIVATE int sqlite3ExprCoveredByIndex(
 */
 struct SrcCount {
   SrcList *pSrc;   /* One particular FROM clause in a nested query */
+  int iSrcInner;   /* Smallest cursor number in this context */
   int nThis;       /* Number of references to columns in pSrcList */
   int nOther;      /* Number of references to columns in other FROM clauses */
 };
 
 /*
+** xSelect callback for sqlite3FunctionUsesThisSrc(). If this is the first
+** SELECT with a FROM clause encountered during this iteration, set
+** SrcCount.iSrcInner to the cursor number of the leftmost object in
+** the FROM cause.
+*/
+static int selectSrcCount(Walker *pWalker, Select *pSel){
+  struct SrcCount *p = pWalker->u.pSrcCount;
+  if( p->iSrcInner==0x7FFFFFFF && ALWAYS(pSel->pSrc) && pSel->pSrc->nSrc ){
+    pWalker->u.pSrcCount->iSrcInner = pSel->pSrc->a[0].iCursor;
+  }
+  return WRC_Continue;
+}
+
+/*
 ** Count the number of references to columns.
 */
 static int exprSrcCount(Walker *pWalker, Expr *pExpr){
-  /* The NEVER() on the second term is because sqlite3FunctionUsesThisSrc()
-  ** is always called before sqlite3ExprAnalyzeAggregates() and so the
-  ** TK_COLUMNs have not yet been converted into TK_AGG_COLUMN.  If
-  ** sqlite3FunctionUsesThisSrc() is used differently in the future, the
-  ** NEVER() will need to be removed. */
-  if( pExpr->op==TK_COLUMN || NEVER(pExpr->op==TK_AGG_COLUMN) ){
+  /* There was once a NEVER() on the second term on the grounds that
+  ** sqlite3FunctionUsesThisSrc() was always called before
+  ** sqlite3ExprAnalyzeAggregates() and so the TK_COLUMNs have not yet
+  ** been converted into TK_AGG_COLUMN. But this is no longer true due
+  ** to window functions - sqlite3WindowRewrite() may now indirectly call
+  ** FunctionUsesThisSrc() when creating a new sub-select. */
+  if( pExpr->op==TK_COLUMN || pExpr->op==TK_AGG_COLUMN ){
     int i;
     struct SrcCount *p = pWalker->u.pSrcCount;
     SrcList *pSrc = p->pSrc;
@@ -107332,7 +110122,7 @@ static int exprSrcCount(Walker *pWalker, Expr *pExpr){
     }
     if( i<nSrc ){
       p->nThis++;
-    }else if( nSrc==0 || pExpr->iTable<pSrc->a[0].iCursor ){
+    }else if( pExpr->iTable<p->iSrcInner ){
       /* In a well-formed parse tree (no name resolution errors),
       ** TK_COLUMN nodes with smaller Expr.iTable values are in an
       ** outer context.  Those are the only ones to count as "other" */
@@ -107354,16 +110144,80 @@ SQLITE_PRIVATE int sqlite3FunctionUsesThisSrc(Expr *pExpr, SrcList *pSrcList){
   assert( pExpr->op==TK_AGG_FUNCTION );
   memset(&w, 0, sizeof(w));
   w.xExprCallback = exprSrcCount;
-  w.xSelectCallback = sqlite3SelectWalkNoop;
+  w.xSelectCallback = selectSrcCount;
   w.u.pSrcCount = &cnt;
   cnt.pSrc = pSrcList;
+  cnt.iSrcInner = (pSrcList&&pSrcList->nSrc)?pSrcList->a[0].iCursor:0x7FFFFFFF;
   cnt.nThis = 0;
   cnt.nOther = 0;
   sqlite3WalkExprList(&w, pExpr->x.pList);
+#ifndef SQLITE_OMIT_WINDOWFUNC
+  if( ExprHasProperty(pExpr, EP_WinFunc) ){
+    sqlite3WalkExpr(&w, pExpr->y.pWin->pFilter);
+  }
+#endif
   return cnt.nThis>0 || cnt.nOther==0;
 }
 
 /*
+** This is a Walker expression node callback.
+**
+** For Expr nodes that contain pAggInfo pointers, make sure the AggInfo
+** object that is referenced does not refer directly to the Expr.  If
+** it does, make a copy.  This is done because the pExpr argument is
+** subject to change.
+**
+** The copy is stored on pParse->pConstExpr with a register number of 0.
+** This will cause the expression to be deleted automatically when the
+** Parse object is destroyed, but the zero register number means that it
+** will not generate any code in the preamble.
+*/
+static int agginfoPersistExprCb(Walker *pWalker, Expr *pExpr){
+  if( ALWAYS(!ExprHasProperty(pExpr, EP_TokenOnly|EP_Reduced))
+   && pExpr->pAggInfo!=0
+  ){
+    AggInfo *pAggInfo = pExpr->pAggInfo;
+    int iAgg = pExpr->iAgg;
+    Parse *pParse = pWalker->pParse;
+    sqlite3 *db = pParse->db;
+    assert( pExpr->op==TK_AGG_COLUMN || pExpr->op==TK_AGG_FUNCTION );
+    if( pExpr->op==TK_AGG_COLUMN ){
+      assert( iAgg>=0 && iAgg<pAggInfo->nColumn );
+      if( pAggInfo->aCol[iAgg].pCExpr==pExpr ){
+        pExpr = sqlite3ExprDup(db, pExpr, 0);
+        if( pExpr ){
+          pAggInfo->aCol[iAgg].pCExpr = pExpr;
+          pParse->pConstExpr =
+             sqlite3ExprListAppend(pParse, pParse->pConstExpr, pExpr);
+        }
+      }
+    }else{
+      assert( iAgg>=0 && iAgg<pAggInfo->nFunc );
+      if( pAggInfo->aFunc[iAgg].pFExpr==pExpr ){
+        pExpr = sqlite3ExprDup(db, pExpr, 0);
+        if( pExpr ){
+          pAggInfo->aFunc[iAgg].pFExpr = pExpr;
+          pParse->pConstExpr =
+             sqlite3ExprListAppend(pParse, pParse->pConstExpr, pExpr);
+        }
+      }
+    }
+  }
+  return WRC_Continue;
+}
+
+/*
+** Initialize a Walker object so that will persist AggInfo entries referenced
+** by the tree that is walked.
+*/
+SQLITE_PRIVATE void sqlite3AggInfoPersistWalkerInit(Walker *pWalker, Parse *pParse){
+  memset(pWalker, 0, sizeof(*pWalker));
+  pWalker->pParse = pParse;
+  pWalker->xExprCallback = agginfoPersistExprCb;
+  pWalker->xSelectCallback = sqlite3SelectWalkNoop;
+}
+
+/*
 ** Add a new element to the pAggInfo->aCol[] array.  Return the index of
 ** the new element.  Return a negative number if malloc fails.
 */
@@ -107444,7 +110298,7 @@ static int analyzeAggregate(Walker *pWalker, Expr *pExpr){
               pCol->iColumn = pExpr->iColumn;
               pCol->iMem = ++pParse->nMem;
               pCol->iSorterColumn = -1;
-              pCol->pExpr = pExpr;
+              pCol->pCExpr = pExpr;
               if( pAggInfo->pGroupBy ){
                 int j, n;
                 ExprList *pGB = pAggInfo->pGroupBy;
@@ -107487,7 +110341,7 @@ static int analyzeAggregate(Walker *pWalker, Expr *pExpr){
         */
         struct AggInfo_func *pItem = pAggInfo->aFunc;
         for(i=0; i<pAggInfo->nFunc; i++, pItem++){
-          if( sqlite3ExprCompare(0, pItem->pExpr, pExpr, -1)==0 ){
+          if( sqlite3ExprCompare(0, pItem->pFExpr, pExpr, -1)==0 ){
             break;
           }
         }
@@ -107499,7 +110353,7 @@ static int analyzeAggregate(Walker *pWalker, Expr *pExpr){
           if( i>=0 ){
             assert( !ExprHasProperty(pExpr, EP_xIsSelect) );
             pItem = &pAggInfo->aFunc[i];
-            pItem->pExpr = pExpr;
+            pItem->pFExpr = pExpr;
             pItem->iMem = ++pParse->nMem;
             assert( !ExprHasProperty(pExpr, EP_IntValue) );
             pItem->pFunc = sqlite3FindFunction(pParse->db,
@@ -107526,15 +110380,6 @@ static int analyzeAggregate(Walker *pWalker, Expr *pExpr){
   }
   return WRC_Continue;
 }
-static int analyzeAggregatesInSelect(Walker *pWalker, Select *pSelect){
-  UNUSED_PARAMETER(pSelect);
-  pWalker->walkerDepth++;
-  return WRC_Continue;
-}
-static void analyzeAggregatesInSelectEnd(Walker *pWalker, Select *pSelect){
-  UNUSED_PARAMETER(pSelect);
-  pWalker->walkerDepth--;
-}
 
 /*
 ** Analyze the pExpr expression looking for aggregate functions and
@@ -107548,8 +110393,8 @@ static void analyzeAggregatesInSelectEnd(Walker *pWalker, Select *pSelect){
 SQLITE_PRIVATE void sqlite3ExprAnalyzeAggregates(NameContext *pNC, Expr *pExpr){
   Walker w;
   w.xExprCallback = analyzeAggregate;
-  w.xSelectCallback = analyzeAggregatesInSelect;
-  w.xSelectCallback2 = analyzeAggregatesInSelectEnd;
+  w.xSelectCallback = sqlite3WalkerDepthIncrease;
+  w.xSelectCallback2 = sqlite3WalkerDepthDecrease;
   w.walkerDepth = 0;
   w.u.pNC = pNC;
   w.pParse = 0;
@@ -107588,8 +110433,11 @@ SQLITE_PRIVATE int sqlite3GetTempReg(Parse *pParse){
 ** purpose.
 */
 SQLITE_PRIVATE void sqlite3ReleaseTempReg(Parse *pParse, int iReg){
-  if( iReg && pParse->nTempReg<ArraySize(pParse->aTempReg) ){
-    pParse->aTempReg[pParse->nTempReg++] = iReg;
+  if( iReg ){
+    sqlite3VdbeReleaseRegisters(pParse, iReg, 1, 0, 0);
+    if( pParse->nTempReg<ArraySize(pParse->aTempReg) ){
+      pParse->aTempReg[pParse->nTempReg++] = iReg;
+    }
   }
 }
 
@@ -107615,6 +110463,7 @@ SQLITE_PRIVATE void sqlite3ReleaseTempRange(Parse *pParse, int iReg, int nReg){
     sqlite3ReleaseTempReg(pParse, iReg);
     return;
   }
+  sqlite3VdbeReleaseRegisters(pParse, iReg, nReg, 0, 0);
   if( nReg>pParse->nRangeReg ){
     pParse->nRangeReg = nReg;
     pParse->iRangeReg = iReg;
@@ -107692,9 +110541,8 @@ SQLITE_PRIVATE int sqlite3NoTempsInRange(Parse *pParse, int iFirst, int iLast){
 static int isAlterableTable(Parse *pParse, Table *pTab){
   if( 0==sqlite3StrNICmp(pTab->zName, "sqlite_", 7)
 #ifndef SQLITE_OMIT_VIRTUALTABLE
-   || ( (pTab->tabFlags & TF_Shadow)
-     && (pParse->db->flags & SQLITE_Defensive)
-     && pParse->db->nVdbeExec==0
+   || ( (pTab->tabFlags & TF_Shadow)!=0
+        && sqlite3ReadOnlyShadowTables(pParse->db)
    )
 #endif
   ){
@@ -107714,22 +110562,22 @@ static int isAlterableTable(Parse *pParse, Table *pTab){
 static void renameTestSchema(Parse *pParse, const char *zDb, int bTemp){
   sqlite3NestedParse(pParse,
       "SELECT 1 "
-      "FROM \"%w\".%s "
+      "FROM \"%w\"." DFLT_SCHEMA_TABLE " "
       "WHERE name NOT LIKE 'sqliteX_%%' ESCAPE 'X'"
       " AND sql NOT LIKE 'create virtual%%'"
       " AND sqlite_rename_test(%Q, sql, type, name, %d)=NULL ",
-      zDb, MASTER_NAME,
+      zDb,
       zDb, bTemp
   );
 
   if( bTemp==0 ){
     sqlite3NestedParse(pParse,
         "SELECT 1 "
-        "FROM temp.%s "
+        "FROM temp." DFLT_SCHEMA_TABLE " "
         "WHERE name NOT LIKE 'sqliteX_%%' ESCAPE 'X'"
         " AND sql NOT LIKE 'create virtual%%'"
         " AND sqlite_rename_test(%Q, sql, type, name, 1)=NULL ",
-        MASTER_NAME, zDb
+        zDb
     );
   }
 }
@@ -107785,7 +110633,10 @@ SQLITE_PRIVATE void sqlite3AlterRenameTable(
   /* Check that a table or index named 'zName' does not already exist
   ** in database iDb. If so, this is an error.
   */
-  if( sqlite3FindTable(db, zName, zDb) || sqlite3FindIndex(db, zName, zDb) ){
+  if( sqlite3FindTable(db, zName, zDb)
+   || sqlite3FindIndex(db, zName, zDb)
+   || sqlite3IsShadowTableOf(db, pTab, zName)
+  ){
     sqlite3ErrorMsg(pParse,
         "there is already another table or index with this name: %s", zName);
     goto exit_rename_table;
@@ -107844,27 +110695,27 @@ SQLITE_PRIVATE void sqlite3AlterRenameTable(
   /* Rewrite all CREATE TABLE, INDEX, TRIGGER or VIEW statements in
   ** the schema to use the new table name.  */
   sqlite3NestedParse(pParse,
-      "UPDATE \"%w\".%s SET "
+      "UPDATE \"%w\"." DFLT_SCHEMA_TABLE " SET "
       "sql = sqlite_rename_table(%Q, type, name, sql, %Q, %Q, %d) "
       "WHERE (type!='index' OR tbl_name=%Q COLLATE nocase)"
       "AND   name NOT LIKE 'sqliteX_%%' ESCAPE 'X'"
-      , zDb, MASTER_NAME, zDb, zTabName, zName, (iDb==1), zTabName
+      , zDb, zDb, zTabName, zName, (iDb==1), zTabName
   );
 
-  /* Update the tbl_name and name columns of the sqlite_master table
+  /* Update the tbl_name and name columns of the sqlite_schema table
   ** as required.  */
   sqlite3NestedParse(pParse,
-      "UPDATE %Q.%s SET "
+      "UPDATE %Q." DFLT_SCHEMA_TABLE " SET "
           "tbl_name = %Q, "
           "name = CASE "
             "WHEN type='table' THEN %Q "
             "WHEN name LIKE 'sqliteX_autoindex%%' ESCAPE 'X' "
             "     AND type='index' THEN "
-             "'sqlcipher_autoindex_' || %Q || substr(name,%d+18) "
+             "'sqlite_autoindex_' || %Q || substr(name,%d+18) "
             "ELSE name END "
       "WHERE tbl_name=%Q COLLATE nocase AND "
           "(type='table' OR type='index' OR type='trigger');",
-      zDb, MASTER_NAME,
+      zDb,
       zName, zName, zName,
       nTabName, zTabName
   );
@@ -107873,9 +110724,9 @@ SQLITE_PRIVATE void sqlite3AlterRenameTable(
   /* If the sqlite_sequence table exists in this database, then update
   ** it with the new table name.
   */
-  if( sqlite3FindTable(db, "sqlcipher_sequence", zDb) ){
+  if( sqlite3FindTable(db, "sqlite_sequence", zDb) ){
     sqlite3NestedParse(pParse,
-        "UPDATE \"%w\".sqlcipher_sequence set name = %Q WHERE name = %Q",
+        "UPDATE \"%w\".sqlite_sequence set name = %Q WHERE name = %Q",
         zDb, zName, pTab->zName);
   }
 #endif
@@ -107885,7 +110736,7 @@ SQLITE_PRIVATE void sqlite3AlterRenameTable(
   ** as required.  */
   if( iDb!=1 ){
     sqlite3NestedParse(pParse,
-        "UPDATE sqlcipher_temp_master SET "
+        "UPDATE sqlite_temp_schema SET "
             "sql = sqlite_rename_table(%Q, type, name, sql, %Q, %Q, 1), "
             "tbl_name = "
               "CASE WHEN tbl_name=%Q COLLATE nocase AND "
@@ -107918,6 +110769,22 @@ exit_rename_table:
 }
 
 /*
+** Write code that will raise an error if the table described by
+** zDb and zTab is not empty.
+*/
+static void sqlite3ErrorIfNotEmpty(
+  Parse *pParse,        /* Parsing context */
+  const char *zDb,      /* Schema holding the table */
+  const char *zTab,     /* Table to check for empty */
+  const char *zErr      /* Error message text */
+){
+  sqlite3NestedParse(pParse,
+     "SELECT raise(ABORT,%Q) FROM \"%w\".\"%w\"",
+     zErr, zDb, zTab
+  );
+}
+
+/*
 ** This function is called after an "ALTER TABLE ... ADD" statement
 ** has been parsed. Argument pColDef contains the text of the new
 ** column definition.
@@ -107959,14 +110826,6 @@ SQLITE_PRIVATE void sqlite3AlterFinishAddColumn(Parse *pParse, Token *pColDef){
   }
 #endif
 
-  /* If the default value for the new column was specified with a
-  ** literal NULL, then set pDflt to 0. This simplifies checking
-  ** for an SQL NULL default below.
-  */
-  assert( pDflt==0 || pDflt->op==TK_SPAN );
-  if( pDflt && pDflt->pLeft->op==TK_NULL ){
-    pDflt = 0;
-  }
 
   /* Check that the new column is not specified as PRIMARY KEY or UNIQUE.
   ** If there is a NOT NULL constraint, then the default value for the
@@ -107977,39 +110836,52 @@ SQLITE_PRIVATE void sqlite3AlterFinishAddColumn(Parse *pParse, Token *pColDef){
     return;
   }
   if( pNew->pIndex ){
-    sqlite3ErrorMsg(pParse, "Cannot add a UNIQUE column");
-    return;
-  }
-  if( (db->flags&SQLITE_ForeignKeys) && pNew->pFKey && pDflt ){
     sqlite3ErrorMsg(pParse,
-        "Cannot add a REFERENCES column with non-NULL default value");
+         "Cannot add a UNIQUE column");
     return;
   }
-  if( pCol->notNull && !pDflt ){
-    sqlite3ErrorMsg(pParse,
-        "Cannot add a NOT NULL column with default value NULL");
-    return;
-  }
-
-  /* Ensure the default expression is something that sqlite3ValueFromExpr()
-  ** can handle (i.e. not CURRENT_TIME etc.)
-  */
-  if( pDflt ){
-    sqlite3_value *pVal = 0;
-    int rc;
-    rc = sqlite3ValueFromExpr(db, pDflt, SQLITE_UTF8, SQLITE_AFF_BLOB, &pVal);
-    assert( rc==SQLITE_OK || rc==SQLITE_NOMEM );
-    if( rc!=SQLITE_OK ){
-      assert( db->mallocFailed == 1 );
-      return;
+  if( (pCol->colFlags & COLFLAG_GENERATED)==0 ){
+    /* If the default value for the new column was specified with a
+    ** literal NULL, then set pDflt to 0. This simplifies checking
+    ** for an SQL NULL default below.
+    */
+    assert( pDflt==0 || pDflt->op==TK_SPAN );
+    if( pDflt && pDflt->pLeft->op==TK_NULL ){
+      pDflt = 0;
     }
-    if( !pVal ){
-      sqlite3ErrorMsg(pParse, "Cannot add a column with non-constant default");
-      return;
+    if( (db->flags&SQLITE_ForeignKeys) && pNew->pFKey && pDflt ){
+      sqlite3ErrorIfNotEmpty(pParse, zDb, zTab,
+          "Cannot add a REFERENCES column with non-NULL default value");
     }
-    sqlite3ValueFree(pVal);
+    if( pCol->notNull && !pDflt ){
+      sqlite3ErrorIfNotEmpty(pParse, zDb, zTab,
+          "Cannot add a NOT NULL column with default value NULL");
+    }
+
+
+    /* Ensure the default expression is something that sqlite3ValueFromExpr()
+    ** can handle (i.e. not CURRENT_TIME etc.)
+    */
+    if( pDflt ){
+      sqlite3_value *pVal = 0;
+      int rc;
+      rc = sqlite3ValueFromExpr(db, pDflt, SQLITE_UTF8, SQLITE_AFF_BLOB, &pVal);
+      assert( rc==SQLITE_OK || rc==SQLITE_NOMEM );
+      if( rc!=SQLITE_OK ){
+        assert( db->mallocFailed == 1 );
+        return;
+      }
+      if( !pVal ){
+        sqlite3ErrorIfNotEmpty(pParse, zDb, zTab,
+           "Cannot add a column with non-constant default");
+      }
+      sqlite3ValueFree(pVal);
+    }
+  }else if( pCol->colFlags & COLFLAG_STORED ){
+    sqlite3ErrorIfNotEmpty(pParse, zDb, zTab, "cannot add a STORED column");
   }
 
+
   /* Modify the CREATE TABLE statement. */
   zCol = sqlite3DbStrNDup(db, (char*)pColDef->z, pColDef->n);
   if( zCol ){
@@ -108020,10 +110892,10 @@ SQLITE_PRIVATE void sqlite3AlterFinishAddColumn(Parse *pParse, Token *pColDef){
     }
     db->mDbFlags |= DBFLAG_PreferBuiltin;
     sqlite3NestedParse(pParse,
-        "UPDATE \"%w\".%s SET "
+        "UPDATE \"%w\"." DFLT_SCHEMA_TABLE " SET "
           "sql = substr(sql,1,%d) || ', ' || %Q || substr(sql,%d) "
         "WHERE type = 'table' AND name = %Q",
-      zDb, MASTER_NAME, pNew->addColOffset, zCol, pNew->addColOffset+1,
+      zDb, pNew->addColOffset, zCol, pNew->addColOffset+1,
       zTab
     );
     sqlite3DbFree(db, zCol);
@@ -108125,6 +110997,7 @@ SQLITE_PRIVATE void sqlite3AlterBeginAddColumn(Parse *pParse, SrcList *pSrc){
   for(i=0; i<pNew->nCol; i++){
     Column *pCol = &pNew->aCol[i];
     pCol->zName = sqlite3DbStrDup(db, pCol->zName);
+    pCol->hName = sqlite3StrIHash(pCol->zName);
     pCol->zColl = 0;
     pCol->pDflt = 0;
   }
@@ -108224,7 +111097,7 @@ SQLITE_PRIVATE void sqlite3AlterRenameColumn(
 
   /* Do the rename operation using a recursive UPDATE statement that
   ** uses the sqlite_rename_column() SQL function to compute the new
-  ** CREATE statement text for the sqlite_master table.
+  ** CREATE statement text for the sqlite_schema table.
   */
   sqlite3MayAbort(pParse);
   zNew = sqlite3NameFromToken(db, pNew);
@@ -108232,21 +111105,20 @@ SQLITE_PRIVATE void sqlite3AlterRenameColumn(
   assert( pNew->n>0 );
   bQuote = sqlite3Isquote(pNew->z[0]);
   sqlite3NestedParse(pParse,
-      "UPDATE \"%w\".%s SET "
+      "UPDATE \"%w\"." DFLT_SCHEMA_TABLE " SET "
       "sql = sqlite_rename_column(sql, type, name, %Q, %Q, %d, %Q, %d, %d) "
       "WHERE name NOT LIKE 'sqliteX_%%' ESCAPE 'X' "
       " AND (type != 'index' OR tbl_name = %Q)"
       " AND sql NOT LIKE 'create virtual%%'",
-      zDb, MASTER_NAME,
+      zDb,
       zDb, pTab->zName, iCol, zNew, bQuote, iSchema==1,
       pTab->zName
   );
 
   sqlite3NestedParse(pParse,
-      "UPDATE temp.%s SET "
+      "UPDATE temp." DFLT_SCHEMA_TABLE " SET "
       "sql = sqlite_rename_column(sql, type, name, %Q, %Q, %d, %Q, %d, 1) "
       "WHERE type IN ('trigger', 'view')",
-      MASTER_NAME,
       zDb, pTab->zName, iCol, zNew, bQuote
   );
 
@@ -108353,12 +111225,14 @@ SQLITE_PRIVATE void *sqlite3RenameTokenMap(Parse *pParse, void *pPtr, Token *pTo
   RenameToken *pNew;
   assert( pPtr || pParse->db->mallocFailed );
   renameTokenCheckAll(pParse, pPtr);
-  pNew = sqlite3DbMallocZero(pParse->db, sizeof(RenameToken));
-  if( pNew ){
-    pNew->p = pPtr;
-    pNew->t = *pToken;
-    pNew->pNext = pParse->pRename;
-    pParse->pRename = pNew;
+  if( ALWAYS(pParse->eParseMode!=PARSE_MODE_UNMAP) ){
+    pNew = sqlite3DbMallocZero(pParse->db, sizeof(RenameToken));
+    if( pNew ){
+      pNew->p = pPtr;
+      pNew->t = *pToken;
+      pNew->pNext = pParse->pRename;
+      pParse->pRename = pNew;
+    }
   }
 
   return pPtr;
@@ -108390,16 +111264,53 @@ static int renameUnmapExprCb(Walker *pWalker, Expr *pExpr){
 }
 
 /*
+** Iterate through the Select objects that are part of WITH clauses attached
+** to select statement pSelect.
+*/
+static void renameWalkWith(Walker *pWalker, Select *pSelect){
+  With *pWith = pSelect->pWith;
+  if( pWith ){
+    int i;
+    for(i=0; i<pWith->nCte; i++){
+      Select *p = pWith->a[i].pSelect;
+      NameContext sNC;
+      memset(&sNC, 0, sizeof(sNC));
+      sNC.pParse = pWalker->pParse;
+      sqlite3SelectPrep(sNC.pParse, p, &sNC);
+      sqlite3WalkSelect(pWalker, p);
+      sqlite3RenameExprlistUnmap(pWalker->pParse, pWith->a[i].pCols);
+    }
+  }
+}
+
+/*
+** Unmap all tokens in the IdList object passed as the second argument.
+*/
+static void unmapColumnIdlistNames(
+  Parse *pParse,
+  IdList *pIdList
+){
+  if( pIdList ){
+    int ii;
+    for(ii=0; ii<pIdList->nId; ii++){
+      sqlite3RenameTokenRemap(pParse, 0, (void*)pIdList->a[ii].zName);
+    }
+  }
+}
+
+/*
 ** Walker callback used by sqlite3RenameExprUnmap().
 */
 static int renameUnmapSelectCb(Walker *pWalker, Select *p){
   Parse *pParse = pWalker->pParse;
   int i;
+  if( pParse->nErr ) return WRC_Abort;
+  if( NEVER(p->selFlags & SF_View) ) return WRC_Prune;
   if( ALWAYS(p->pEList) ){
     ExprList *pList = p->pEList;
     for(i=0; i<pList->nExpr; i++){
-      if( pList->a[i].zName ){
-        sqlite3RenameTokenRemap(pParse, 0, (void*)pList->a[i].zName);
+      if( pList->a[i].zEName && pList->a[i].eEName==ENAME_NAME ){
+        sqlite3RenameTokenRemap(pParse, 0, (void*)pList->a[i].zEName);
       }
     }
   }
@@ -108407,8 +111318,12 @@ static int renameUnmapSelectCb(Walker *pWalker, Select *p){
     SrcList *pSrc = p->pSrc;
     for(i=0; i<pSrc->nSrc; i++){
       sqlite3RenameTokenRemap(pParse, 0, (void*)pSrc->a[i].zName);
+      if( sqlite3WalkExpr(pWalker, pSrc->a[i].pOn) ) return WRC_Abort;
+      unmapColumnIdlistNames(pParse, pSrc->a[i].pUsing);
     }
   }
+
+  renameWalkWith(pWalker, p);
   return WRC_Continue;
 }
 
@@ -108416,12 +111331,15 @@ static int renameUnmapSelectCb(Walker *pWalker, Select *p){
 ** Remove all nodes that are part of expression pExpr from the rename list.
 */
 SQLITE_PRIVATE void sqlite3RenameExprUnmap(Parse *pParse, Expr *pExpr){
+  u8 eMode = pParse->eParseMode;
   Walker sWalker;
   memset(&sWalker, 0, sizeof(Walker));
   sWalker.pParse = pParse;
   sWalker.xExprCallback = renameUnmapExprCb;
   sWalker.xSelectCallback = renameUnmapSelectCb;
+  pParse->eParseMode = PARSE_MODE_UNMAP;
   sqlite3WalkExpr(&sWalker, pExpr);
+  pParse->eParseMode = eMode;
 }
 
 /*
@@ -108437,7 +111355,9 @@ SQLITE_PRIVATE void sqlite3RenameExprlistUnmap(Parse *pParse, ExprList *pEList){
     sWalker.xExprCallback = renameUnmapExprCb;
     sqlite3WalkExprList(&sWalker, pEList);
     for(i=0; i<pEList->nExpr; i++){
-      sqlite3RenameTokenRemap(pParse, 0, (void*)pEList->a[i].zName);
+      if( ALWAYS(pEList->a[i].eEName==ENAME_NAME) ){
+        sqlite3RenameTokenRemap(pParse, 0, (void*)pEList->a[i].zEName);
+      }
     }
   }
 }
@@ -108476,29 +111396,12 @@ static void renameTokenFind(Parse *pParse, struct RenameCtx *pCtx, void *pPtr){
 }
 
 /*
-** Iterate through the Select objects that are part of WITH clauses attached
-** to select statement pSelect.
-*/
-static void renameWalkWith(Walker *pWalker, Select *pSelect){
-  if( pSelect->pWith ){
-    int i;
-    for(i=0; i<pSelect->pWith->nCte; i++){
-      Select *p = pSelect->pWith->a[i].pSelect;
-      NameContext sNC;
-      memset(&sNC, 0, sizeof(sNC));
-      sNC.pParse = pWalker->pParse;
-      sqlite3SelectPrep(sNC.pParse, p, &sNC);
-      sqlite3WalkSelect(pWalker, p);
-    }
-  }
-}
-
-/*
 ** This is a Walker select callback. It does nothing. It is only required
 ** because without a dummy callback, sqlite3WalkExpr() and similar do not
 ** descend into sub-select statements.
 */
 static int renameColumnSelectCb(Walker *pWalker, Select *p){
+  if( p->selFlags & SF_View ) return WRC_Prune;
   renameWalkWith(pWalker, p);
   return WRC_Continue;
 }
@@ -108592,8 +111495,11 @@ static void renameColumnElistNames(
   if( pEList ){
     int i;
     for(i=0; i<pEList->nExpr; i++){
-      char *zName = pEList->a[i].zName;
-      if( 0==sqlite3_stricmp(zName, zOld) ){
+      char *zName = pEList->a[i].zEName;
+      if( ALWAYS(pEList->a[i].eEName==ENAME_NAME)
+       && ALWAYS(zName!=0)
+       && 0==sqlite3_stricmp(zName, zOld)
+      ){
         renameTokenFind(pParse, pCtx, (void*)zName);
       }
     }
@@ -108622,6 +111528,7 @@ static void renameColumnIdlistNames(
   }
 }
 
+
 /*
 ** Parse the SQL statement zSql using Parse object (*p). The Parse object
 ** is initialized by this function before it is used.
@@ -108629,7 +111536,6 @@ static void renameColumnIdlistNames(
 static int renameParseSql(
   Parse *p,                       /* Memory to use for Parse object */
   const char *zDb,                /* Name of schema SQL belongs to */
-  int bTable,                     /* 1 -> RENAME TABLE, 0 -> RENAME COLUMN */
   sqlite3 *db,                    /* Database handle */
   const char *zSql,               /* SQL to parse */
   int bTemp                       /* True if SQL is from temp schema */
@@ -108643,7 +111549,7 @@ static int renameParseSql(
   ** occurs and the parse does not result in a new table, index or
   ** trigger object, the database must be corrupt. */
   memset(p, 0, sizeof(Parse));
-  p->eParseMode = (bTable ? PARSE_MODE_RENAME_TABLE : PARSE_MODE_RENAME_COLUMN);
+  p->eParseMode = PARSE_MODE_RENAME;
   p->db = db;
   p->nQueryLoop = 1;
   rc = sqlite3RunParser(p, zSql, &zErr);
@@ -108764,7 +111670,7 @@ static int renameEditSql(
 ** successful. Otherwise, return an SQLite error code and leave an error
 ** message in the Parse object.
 */
-static int renameResolveTrigger(Parse *pParse, const char *zDb){
+static int renameResolveTrigger(Parse *pParse){
   sqlite3 *db = pParse->db;
   Trigger *pNew = pParse->pNewTrigger;
   TriggerStep *pStep;
@@ -108795,17 +111701,22 @@ static int renameResolveTrigger(Parse *pParse, const char *zDb){
       if( pParse->nErr ) rc = pParse->rc;
     }
     if( rc==SQLITE_OK && pStep->zTarget ){
-      Table *pTarget = sqlite3LocateTable(pParse, 0, pStep->zTarget, zDb);
-      if( pTarget==0 ){
-        rc = SQLITE_ERROR;
-      }else if( SQLITE_OK==(rc = sqlite3ViewGetColumnNames(pParse, pTarget)) ){
-        SrcList sSrc;
-        memset(&sSrc, 0, sizeof(sSrc));
-        sSrc.nSrc = 1;
-        sSrc.a[0].zName = pStep->zTarget;
-        sSrc.a[0].pTab = pTarget;
-        sNC.pSrcList = &sSrc;
-        if( pStep->pWhere ){
+      SrcList *pSrc = sqlite3TriggerStepSrc(pParse, pStep);
+      if( pSrc ){
+        int i;
+        for(i=0; i<pSrc->nSrc && rc==SQLITE_OK; i++){
+          struct SrcList_item *p = &pSrc->a[i];
+          p->pTab = sqlite3LocateTableItem(pParse, 0, p);
+          p->iCursor = pParse->nTab++;
+          if( p->pTab==0 ){
+            rc = SQLITE_ERROR;
+          }else{
+            p->pTab->nTabRef++;
+            rc = sqlite3ViewGetColumnNames(pParse, p->pTab);
+          }
+        }
+        sNC.pSrcList = pSrc;
+        if( rc==SQLITE_OK && pStep->pWhere ){
           rc = sqlite3ResolveExprNames(&sNC, pStep->pWhere);
         }
         if( rc==SQLITE_OK ){
@@ -108815,7 +111726,7 @@ static int renameResolveTrigger(Parse *pParse, const char *zDb){
         if( pStep->pUpsert ){
           Upsert *pUpsert = pStep->pUpsert;
           assert( rc==SQLITE_OK );
-          pUpsert->pUpsertSrc = &sSrc;
+          pUpsert->pUpsertSrc = pSrc;
           sNC.uNC.pUpsert = pUpsert;
           sNC.ncFlags = NC_UUpsert;
           rc = sqlite3ResolveExprListNames(&sNC, pUpsert->pUpsertTarget);
@@ -108832,6 +111743,9 @@ static int renameResolveTrigger(Parse *pParse, const char *zDb){
           sNC.ncFlags = 0;
         }
         sNC.pSrcList = 0;
+        sqlite3SrcListDelete(db, pSrc);
+      }else{
+        rc = SQLITE_NOMEM;
       }
     }
   }
@@ -108950,7 +111864,7 @@ static void renameColumnFunc(
 #ifndef SQLITE_OMIT_AUTHORIZATION
   db->xAuth = 0;
 #endif
-  rc = renameParseSql(&sParse, zDb, 0, db, zSql, bTemp);
+  rc = renameParseSql(&sParse, zDb, db, zSql, bTemp);
 
   /* Find tokens that need to be replaced. */
   memset(&sWalker, 0, sizeof(Walker));
@@ -108964,8 +111878,9 @@ static void renameColumnFunc(
   if( sParse.pNewTable ){
     Select *pSelect = sParse.pNewTable->pSelect;
     if( pSelect ){
+      pSelect->selFlags &= ~SF_View;
       sParse.rc = SQLITE_OK;
-      sqlite3SelectPrep(&sParse, sParse.pNewTable->pSelect, 0);
+      sqlite3SelectPrep(&sParse, pSelect, 0);
       rc = (db->mallocFailed ? SQLITE_NOMEM : sParse.rc);
       if( rc==SQLITE_OK ){
         sqlite3WalkSelect(&sWalker, pSelect);
@@ -108992,6 +111907,11 @@ static void renameColumnFunc(
           sqlite3WalkExprList(&sWalker, pIdx->aColExpr);
         }
       }
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+      for(i=0; i<sParse.pNewTable->nCol; i++){
+        sqlite3WalkExpr(&sWalker, sParse.pNewTable->aCol[i].pDflt);
+      }
+#endif
 
       for(pFKey=sParse.pNewTable->pFKey; pFKey; pFKey=pFKey->pNextFrom){
         for(i=0; i<pFKey->nCol; i++){
@@ -109012,7 +111932,7 @@ static void renameColumnFunc(
   }else{
     /* A trigger */
     TriggerStep *pStep;
-    rc = renameResolveTrigger(&sParse, (bTemp ? 0 : zDb));
+    rc = renameResolveTrigger(&sParse);
     if( rc!=SQLITE_OK ) goto renameColumnFunc_done;
 
     for(pStep=sParse.pNewTrigger->step_list; pStep; pStep=pStep->pNext){
@@ -109077,6 +111997,7 @@ static int renameTableSelectCb(Walker *pWalker, Select *pSelect){
   int i;
   RenameCtx *p = pWalker->u.pRename;
   SrcList *pSrc = pSelect->pSrc;
+  if( pSelect->selFlags & SF_View ) return WRC_Prune;
   if( pSrc==0 ){
     assert( pWalker->pParse->db->mallocFailed );
     return WRC_Abort;
@@ -109147,7 +112068,7 @@ static void renameTableFunc(
     sWalker.xSelectCallback = renameTableSelectCb;
     sWalker.u.pRename = &sCtx;
 
-    rc = renameParseSql(&sParse, zDb, 1, db, zInput, bTemp);
+    rc = renameParseSql(&sParse, zDb, db, zInput, bTemp);
 
     if( rc==SQLITE_OK ){
       int isLegacy = (db->flags & SQLITE_LegacyAlter);
@@ -109156,13 +112077,19 @@ static void renameTableFunc(
 
         if( pTab->pSelect ){
           if( isLegacy==0 ){
+            Select *pSelect = pTab->pSelect;
             NameContext sNC;
             memset(&sNC, 0, sizeof(sNC));
             sNC.pParse = &sParse;
 
+            assert( pSelect->selFlags & SF_View );
+            pSelect->selFlags &= ~SF_View;
             sqlite3SelectPrep(&sParse, pTab->pSelect, &sNC);
-            if( sParse.nErr ) rc = sParse.rc;
-            sqlite3WalkSelect(&sWalker, pTab->pSelect);
+            if( sParse.nErr ){
+              rc = sParse.rc;
+            }else{
+              sqlite3WalkSelect(&sWalker, pTab->pSelect);
+            }
           }
         }else{
           /* Modify any FK definitions to point to the new table. */
@@ -109208,7 +112135,7 @@ static void renameTableFunc(
         }
 
         if( isLegacy==0 ){
-          rc = renameResolveTrigger(&sParse, bTemp ? 0 : zDb);
+          rc = renameResolveTrigger(&sParse);
           if( rc==SQLITE_OK ){
             renameWalkTrigger(&sWalker, pTrigger);
             for(pStep=pTrigger->step_list; pStep; pStep=pStep->pNext){
@@ -109283,7 +112210,7 @@ static void renameTableTest(
   if( zDb && zInput ){
     int rc;
     Parse sParse;
-    rc = renameParseSql(&sParse, zDb, 1, db, zInput, bTemp);
+    rc = renameParseSql(&sParse, zDb, db, zInput, bTemp);
     if( rc==SQLITE_OK ){
       if( isLegacy==0 && sParse.pNewTable && sParse.pNewTable->pSelect ){
         NameContext sNC;
@@ -109295,7 +112222,7 @@ static void renameTableTest(
 
       else if( sParse.pNewTrigger ){
         if( isLegacy==0 ){
-          rc = renameResolveTrigger(&sParse, bTemp ? 0 : zDb);
+          rc = renameResolveTrigger(&sParse);
         }
         if( rc==SQLITE_OK ){
           int i1 = sqlite3SchemaToIndex(db, sParse.pNewTrigger->pTabSchema);
@@ -109507,20 +112434,25 @@ static void openStatTable(
     const char *zName;
     const char *zCols;
   } aTable[] = {
-    { "sqlcipher_stat1", "tbl,idx,stat" },
+    { "sqlite_stat1", "tbl,idx,stat" },
 #if defined(SQLITE_ENABLE_STAT4)
-    { "sqlcipher_stat4", "tbl,idx,neq,nlt,ndlt,sample" },
+    { "sqlite_stat4", "tbl,idx,neq,nlt,ndlt,sample" },
 #else
-    { "sqlcipher_stat4", 0 },
+    { "sqlite_stat4", 0 },
 #endif
-    { "sqlcipher_stat3", 0 },
+    { "sqlite_stat3", 0 },
   };
   int i;
   sqlite3 *db = pParse->db;
   Db *pDb;
   Vdbe *v = sqlite3GetVdbe(pParse);
-  int aRoot[ArraySize(aTable)];
+  u32 aRoot[ArraySize(aTable)];
   u8 aCreateTbl[ArraySize(aTable)];
+#ifdef SQLITE_ENABLE_STAT4
+  const int nToOpen = OptimizationEnabled(db,SQLITE_Stat4) ? 2 : 1;
+#else
+  const int nToOpen = 1;
+#endif
 
   if( v==0 ) return;
   assert( sqlite3BtreeHoldsAllMutexes(db) );
@@ -109533,8 +112465,9 @@ static void openStatTable(
   for(i=0; i<ArraySize(aTable); i++){
     const char *zTab = aTable[i].zName;
     Table *pStat;
+    aCreateTbl[i] = 0;
     if( (pStat = sqlite3FindTable(db, zTab, pDb->zDbSName))==0 ){
-      if( aTable[i].zCols ){
+      if( i<nToOpen ){
         /* The sqlite_statN table does not exist. Create it. Note that a
         ** side-effect of the CREATE TABLE statement is to leave the rootpage
         ** of the new table in register pParse->regRoot. This is important
@@ -109542,7 +112475,7 @@ static void openStatTable(
         sqlite3NestedParse(pParse,
             "CREATE TABLE %Q.%s(%s)", pDb->zDbSName, zTab, aTable[i].zCols
         );
-        aRoot[i] = pParse->regRoot;
+        aRoot[i] = (u32)pParse->regRoot;
         aCreateTbl[i] = OPFLAG_P2ISREG;
       }
     }else{
@@ -109550,7 +112483,6 @@ static void openStatTable(
       ** associated with the table zWhere. If zWhere is NULL, delete the
       ** entire contents of the table. */
       aRoot[i] = pStat->tnum;
-      aCreateTbl[i] = 0;
       sqlite3TableLock(pParse, iDb, aRoot[i], 1, zTab);
       if( zWhere ){
         sqlite3NestedParse(pParse,
@@ -109563,15 +112495,15 @@ static void openStatTable(
 #endif
       }else{
         /* The sqlite_stat[134] table already exists.  Delete all rows. */
-        sqlite3VdbeAddOp2(v, OP_Clear, aRoot[i], iDb);
+        sqlite3VdbeAddOp2(v, OP_Clear, (int)aRoot[i], iDb);
       }
     }
   }
 
   /* Open the sqlite_stat[134] tables for writing. */
-  for(i=0; aTable[i].zCols; i++){
+  for(i=0; i<nToOpen; i++){
     assert( i<ArraySize(aTable) );
-    sqlite3VdbeAddOp4Int(v, OP_OpenWrite, iStatCur+i, aRoot[i], iDb, 3);
+    sqlite3VdbeAddOp4Int(v, OP_OpenWrite, iStatCur+i, (int)aRoot[i], iDb, 3);
     sqlite3VdbeChangeP5(v, aCreateTbl[i]);
     VdbeComment((v, aTable[i].zName));
   }
@@ -109589,9 +112521,9 @@ static void openStatTable(
 ** share an instance of the following structure to hold their state
 ** information.
 */
-typedef struct Stat4Accum Stat4Accum;
-typedef struct Stat4Sample Stat4Sample;
-struct Stat4Sample {
+typedef struct StatAccum StatAccum;
+typedef struct StatSample StatSample;
+struct StatSample {
   tRowcnt *anEq;                  /* sqlite_stat4.nEq */
   tRowcnt *anDLt;                 /* sqlite_stat4.nDLt */
 #ifdef SQLITE_ENABLE_STAT4
@@ -109606,27 +112538,32 @@ struct Stat4Sample {
   u32 iHash;                      /* Tiebreaker hash */
 #endif
 };
-struct Stat4Accum {
-  tRowcnt nRow;             /* Number of rows in the entire table */
-  tRowcnt nPSample;         /* How often to do a periodic sample */
+struct StatAccum {
+  sqlite3 *db;              /* Database connection, for malloc() */
+  tRowcnt nEst;             /* Estimated number of rows */
+  tRowcnt nRow;             /* Number of rows visited so far */
+  int nLimit;               /* Analysis row-scan limit */
   int nCol;                 /* Number of columns in index + pk/rowid */
   int nKeyCol;              /* Number of index columns w/o the pk/rowid */
+  u8 nSkipAhead;            /* Number of times of skip-ahead */
+  StatSample current;       /* Current row as a StatSample */
+#ifdef SQLITE_ENABLE_STAT4
+  tRowcnt nPSample;         /* How often to do a periodic sample */
   int mxSample;             /* Maximum number of samples to accumulate */
-  Stat4Sample current;      /* Current row as a Stat4Sample */
   u32 iPrn;                 /* Pseudo-random number used for sampling */
-  Stat4Sample *aBest;       /* Array of nCol best samples */
+  StatSample *aBest;        /* Array of nCol best samples */
   int iMin;                 /* Index in a[] of entry with minimum score */
   int nSample;              /* Current number of samples */
   int nMaxEqZero;           /* Max leading 0 in anEq[] for any a[] entry */
   int iGet;                 /* Index of current sample accessed by stat_get() */
-  Stat4Sample *a;           /* Array of mxSample Stat4Sample objects */
-  sqlite3 *db;              /* Database connection, for malloc() */
+  StatSample *a;            /* Array of mxSample StatSample objects */
+#endif
 };
 
-/* Reclaim memory used by a Stat4Sample
+/* Reclaim memory used by a StatSample
 */
 #ifdef SQLITE_ENABLE_STAT4
-static void sampleClear(sqlite3 *db, Stat4Sample *p){
+static void sampleClear(sqlite3 *db, StatSample *p){
   assert( db!=0 );
   if( p->nRowid ){
     sqlite3DbFree(db, p->u.aRowid);
@@ -109638,7 +112575,7 @@ static void sampleClear(sqlite3 *db, Stat4Sample *p){
 /* Initialize the BLOB value of a ROWID
 */
 #ifdef SQLITE_ENABLE_STAT4
-static void sampleSetRowid(sqlite3 *db, Stat4Sample *p, int n, const u8 *pData){
+static void sampleSetRowid(sqlite3 *db, StatSample *p, int n, const u8 *pData){
   assert( db!=0 );
   if( p->nRowid ) sqlite3DbFree(db, p->u.aRowid);
   p->u.aRowid = sqlite3DbMallocRawNN(db, n);
@@ -109654,7 +112591,7 @@ static void sampleSetRowid(sqlite3 *db, Stat4Sample *p, int n, const u8 *pData){
 /* Initialize the INTEGER value of a ROWID.
 */
 #ifdef SQLITE_ENABLE_STAT4
-static void sampleSetRowidInt64(sqlite3 *db, Stat4Sample *p, i64 iRowid){
+static void sampleSetRowidInt64(sqlite3 *db, StatSample *p, i64 iRowid){
   assert( db!=0 );
   if( p->nRowid ) sqlite3DbFree(db, p->u.aRowid);
   p->nRowid = 0;
@@ -109667,7 +112604,7 @@ static void sampleSetRowidInt64(sqlite3 *db, Stat4Sample *p, i64 iRowid){
 ** Copy the contents of object (*pFrom) into (*pTo).
 */
 #ifdef SQLITE_ENABLE_STAT4
-static void sampleCopy(Stat4Accum *p, Stat4Sample *pTo, Stat4Sample *pFrom){
+static void sampleCopy(StatAccum *p, StatSample *pTo, StatSample *pFrom){
   pTo->isPSample = pFrom->isPSample;
   pTo->iCol = pFrom->iCol;
   pTo->iHash = pFrom->iHash;
@@ -109683,40 +112620,41 @@ static void sampleCopy(Stat4Accum *p, Stat4Sample *pTo, Stat4Sample *pFrom){
 #endif
 
 /*
-** Reclaim all memory of a Stat4Accum structure.
+** Reclaim all memory of a StatAccum structure.
 */
-static void stat4Destructor(void *pOld){
-  Stat4Accum *p = (Stat4Accum*)pOld;
+static void statAccumDestructor(void *pOld){
+  StatAccum *p = (StatAccum*)pOld;
 #ifdef SQLITE_ENABLE_STAT4
-  int i;
-  for(i=0; i<p->nCol; i++) sampleClear(p->db, p->aBest+i);
-  for(i=0; i<p->mxSample; i++) sampleClear(p->db, p->a+i);
-  sampleClear(p->db, &p->current);
+  if( p->mxSample ){
+    int i;
+    for(i=0; i<p->nCol; i++) sampleClear(p->db, p->aBest+i);
+    for(i=0; i<p->mxSample; i++) sampleClear(p->db, p->a+i);
+    sampleClear(p->db, &p->current);
+  }
 #endif
   sqlite3DbFree(p->db, p);
 }
 
 /*
-** Implementation of the stat_init(N,K,C) SQL function. The three parameters
+** Implementation of the stat_init(N,K,C,L) SQL function. The four parameters
 ** are:
 **     N:    The number of columns in the index including the rowid/pk (note 1)
 **     K:    The number of columns in the index excluding the rowid/pk.
-**     C:    The number of rows in the index (note 2)
+**     C:    Estimated number of rows in the index
+**     L:    A limit on the number of rows to scan, or 0 for no-limit
 **
 ** Note 1:  In the special case of the covering index that implements a
 ** WITHOUT ROWID table, N is the number of PRIMARY KEY columns, not the
 ** total number of columns in the table.
 **
-** Note 2:  C is only used for STAT4.
-**
 ** For indexes on ordinary rowid tables, N==K+1.  But for indexes on
 ** WITHOUT ROWID tables, N=K+P where P is the number of columns in the
 ** PRIMARY KEY of the table.  The covering index that implements the
 ** original WITHOUT ROWID table as N==K as a special case.
 **
-** This routine allocates the Stat4Accum object in heap memory. The return
-** value is a pointer to the Stat4Accum object.  The datatype of the
-** return value is BLOB, but it is really just a pointer to the Stat4Accum
+** This routine allocates the StatAccum object in heap memory. The return
+** value is a pointer to the StatAccum object.  The datatype of the
+** return value is BLOB, but it is really just a pointer to the StatAccum
 ** object.
 */
 static void statInit(
@@ -109724,14 +112662,15 @@ static void statInit(
   int argc,
   sqlite3_value **argv
 ){
-  Stat4Accum *p;
+  StatAccum *p;
   int nCol;                       /* Number of columns in index being sampled */
   int nKeyCol;                    /* Number of key columns */
   int nColUp;                     /* nCol rounded up for alignment */
   int n;                          /* Bytes of space to allocate */
-  sqlite3 *db;                    /* Database connection */
+  sqlite3 *db = sqlite3_context_db_handle(context);   /* Database connection */
 #ifdef SQLITE_ENABLE_STAT4
-  int mxSample = SQLITE_STAT4_SAMPLES;
+  /* Maximum number of samples.  0 if STAT4 data is not collected */
+  int mxSample = OptimizationEnabled(db,SQLITE_Stat4) ?SQLITE_STAT4_SAMPLES :0;
 #endif
 
   /* Decode the three function arguments */
@@ -109743,16 +112682,17 @@ static void statInit(
   assert( nKeyCol<=nCol );
   assert( nKeyCol>0 );
 
-  /* Allocate the space required for the Stat4Accum object */
+  /* Allocate the space required for the StatAccum object */
   n = sizeof(*p)
-    + sizeof(tRowcnt)*nColUp                  /* Stat4Accum.anEq */
-    + sizeof(tRowcnt)*nColUp                  /* Stat4Accum.anDLt */
+    + sizeof(tRowcnt)*nColUp                  /* StatAccum.anEq */
+    + sizeof(tRowcnt)*nColUp;                 /* StatAccum.anDLt */
 #ifdef SQLITE_ENABLE_STAT4
-    + sizeof(tRowcnt)*nColUp                  /* Stat4Accum.anLt */
-    + sizeof(Stat4Sample)*(nCol+mxSample)     /* Stat4Accum.aBest[], a[] */
-    + sizeof(tRowcnt)*3*nColUp*(nCol+mxSample)
+  if( mxSample ){
+    n += sizeof(tRowcnt)*nColUp                  /* StatAccum.anLt */
+      + sizeof(StatSample)*(nCol+mxSample)       /* StatAccum.aBest[], a[] */
+      + sizeof(tRowcnt)*3*nColUp*(nCol+mxSample);
+  }
 #endif
-  ;
   db = sqlite3_context_db_handle(context);
   p = sqlite3DbMallocZero(db, n);
   if( p==0 ){
@@ -109761,25 +112701,28 @@ static void statInit(
   }
 
   p->db = db;
+  p->nEst = sqlite3_value_int64(argv[2]);
   p->nRow = 0;
+  p->nLimit = sqlite3_value_int64(argv[3]);
   p->nCol = nCol;
   p->nKeyCol = nKeyCol;
+  p->nSkipAhead = 0;
   p->current.anDLt = (tRowcnt*)&p[1];
   p->current.anEq = &p->current.anDLt[nColUp];
 
 #ifdef SQLITE_ENABLE_STAT4
-  {
+  p->mxSample = p->nLimit==0 ? mxSample : 0;
+  if( mxSample ){
     u8 *pSpace;                     /* Allocated space not yet assigned */
     int i;                          /* Used to iterate through p->aSample[] */
 
     p->iGet = -1;
-    p->mxSample = mxSample;
-    p->nPSample = (tRowcnt)(sqlite3_value_int64(argv[2])/(mxSample/3+1) + 1);
+    p->nPSample = (tRowcnt)(p->nEst/(mxSample/3+1) + 1);
     p->current.anLt = &p->current.anEq[nColUp];
     p->iPrn = 0x689e962d*(u32)nCol ^ 0xd0944565*(u32)sqlite3_value_int(argv[2]);
 
-    /* Set up the Stat4Accum.a[] and aBest[] arrays */
-    p->a = (struct Stat4Sample*)&p->current.anLt[nColUp];
+    /* Set up the StatAccum.a[] and aBest[] arrays */
+    p->a = (struct StatSample*)&p->current.anLt[nColUp];
     p->aBest = &p->a[mxSample];
     pSpace = (u8*)(&p->a[mxSample+nCol]);
     for(i=0; i<(mxSample+nCol); i++){
@@ -109799,10 +112742,10 @@ static void statInit(
   ** only the pointer (the 2nd parameter) matters.  The size of the object
   ** (given by the 3rd parameter) is never used and can be any positive
   ** value. */
-  sqlite3_result_blob(context, p, sizeof(*p), stat4Destructor);
+  sqlite3_result_blob(context, p, sizeof(*p), statAccumDestructor);
 }
 static const FuncDef statInitFuncdef = {
-  2+IsStat4,       /* nArg */
+  4,               /* nArg */
   SQLITE_UTF8,     /* funcFlags */
   0,               /* pUserData */
   0,               /* pNext */
@@ -109826,9 +112769,9 @@ static const FuncDef statInitFuncdef = {
 ** the anEq[] array from pSample->anEq[pSample->iCol+1] onwards are valid.
 */
 static int sampleIsBetterPost(
-  Stat4Accum *pAccum,
-  Stat4Sample *pNew,
-  Stat4Sample *pOld
+  StatAccum *pAccum,
+  StatSample *pNew,
+  StatSample *pOld
 ){
   int nCol = pAccum->nCol;
   int i;
@@ -109850,9 +112793,9 @@ static int sampleIsBetterPost(
 ** the anEq[] array from pSample->anEq[pSample->iCol] onwards are valid.
 */
 static int sampleIsBetter(
-  Stat4Accum *pAccum,
-  Stat4Sample *pNew,
-  Stat4Sample *pOld
+  StatAccum *pAccum,
+  StatSample *pNew,
+  StatSample *pOld
 ){
   tRowcnt nEqNew = pNew->anEq[pNew->iCol];
   tRowcnt nEqOld = pOld->anEq[pOld->iCol];
@@ -109872,21 +112815,21 @@ static int sampleIsBetter(
 ** Copy the contents of sample *pNew into the p->a[] array. If necessary,
 ** remove the least desirable sample from p->a[] to make room.
 */
-static void sampleInsert(Stat4Accum *p, Stat4Sample *pNew, int nEqZero){
-  Stat4Sample *pSample = 0;
+static void sampleInsert(StatAccum *p, StatSample *pNew, int nEqZero){
+  StatSample *pSample = 0;
   int i;
 
   assert( IsStat4 || nEqZero==0 );
 
-  /* Stat4Accum.nMaxEqZero is set to the maximum number of leading 0
-  ** values in the anEq[] array of any sample in Stat4Accum.a[]. In
+  /* StatAccum.nMaxEqZero is set to the maximum number of leading 0
+  ** values in the anEq[] array of any sample in StatAccum.a[]. In
   ** other words, if nMaxEqZero is n, then it is guaranteed that there
-  ** are no samples with Stat4Sample.anEq[m]==0 for (m>=n). */
+  ** are no samples with StatSample.anEq[m]==0 for (m>=n). */
   if( nEqZero>p->nMaxEqZero ){
     p->nMaxEqZero = nEqZero;
   }
   if( pNew->isPSample==0 ){
-    Stat4Sample *pUpgrade = 0;
+    StatSample *pUpgrade = 0;
     assert( pNew->anEq[pNew->iCol]>0 );
 
     /* This sample is being added because the prefix that ends in column
@@ -109895,7 +112838,7 @@ static void sampleInsert(Stat4Accum *p, Stat4Sample *pNew, int nEqZero){
     ** this one. Instead, upgrade the priority of the highest priority
     ** existing sample that shares this prefix.  */
     for(i=p->nSample-1; i>=0; i--){
-      Stat4Sample *pOld = &p->a[i];
+      StatSample *pOld = &p->a[i];
       if( pOld->anEq[pNew->iCol]==0 ){
         if( pOld->isPSample ) return;
         assert( pOld->iCol>pNew->iCol );
@@ -109914,7 +112857,7 @@ static void sampleInsert(Stat4Accum *p, Stat4Sample *pNew, int nEqZero){
 
   /* If necessary, remove sample iMin to make room for the new sample. */
   if( p->nSample>=p->mxSample ){
-    Stat4Sample *pMin = &p->a[p->iMin];
+    StatSample *pMin = &p->a[p->iMin];
     tRowcnt *anEq = pMin->anEq;
     tRowcnt *anLt = pMin->anLt;
     tRowcnt *anDLt = pMin->anDLt;
@@ -109957,20 +112900,20 @@ find_new_min:
 }
 #endif /* SQLITE_ENABLE_STAT4 */
 
+#ifdef SQLITE_ENABLE_STAT4
 /*
 ** Field iChng of the index being scanned has changed. So at this point
 ** p->current contains a sample that reflects the previous row of the
 ** index. The value of anEq[iChng] and subsequent anEq[] elements are
 ** correct at this point.
 */
-static void samplePushPrevious(Stat4Accum *p, int iChng){
-#ifdef SQLITE_ENABLE_STAT4
+static void samplePushPrevious(StatAccum *p, int iChng){
   int i;
 
   /* Check if any samples from the aBest[] array should be pushed
   ** into IndexSample.a[] at this point.  */
   for(i=(p->nCol-2); i>=iChng; i--){
-    Stat4Sample *pBest = &p->aBest[i];
+    StatSample *pBest = &p->aBest[i];
     pBest->anEq[i] = p->current.anEq[i];
     if( p->nSample<p->mxSample || sampleIsBetter(p, pBest, &p->a[p->iMin]) ){
       sampleInsert(p, pBest, i);
@@ -109994,27 +112937,25 @@ static void samplePushPrevious(Stat4Accum *p, int iChng){
     }
     p->nMaxEqZero = iChng;
   }
-#endif
-
-#ifndef SQLITE_ENABLE_STAT4
-  UNUSED_PARAMETER( p );
-  UNUSED_PARAMETER( iChng );
-#endif
 }
+#endif /* SQLITE_ENABLE_STAT4 */
 
 /*
 ** Implementation of the stat_push SQL function:  stat_push(P,C,R)
 ** Arguments:
 **
-**    P     Pointer to the Stat4Accum object created by stat_init()
+**    P     Pointer to the StatAccum object created by stat_init()
 **    C     Index of left-most column to differ from previous row
 **    R     Rowid for the current row.  Might be a key record for
 **          WITHOUT ROWID tables.
 **
-** This SQL function always returns NULL.  It's purpose it to accumulate
-** statistical data and/or samples in the Stat4Accum object about the
-** index being analyzed.  The stat_get() SQL function will later be used to
-** extract relevant information for constructing the sqlite_statN tables.
+** The purpose of this routine is to collect statistical data and/or
+** samples from the index being analyzed into the StatAccum object.
+** The stat_get() SQL function will be used afterwards to
+** retrieve the information gathered.
+**
+** This SQL function usually returns NULL, but might return an integer
+** if it wants the byte-code to do special processing.
 **
 ** The R parameter is only used for STAT4
 */
@@ -110026,7 +112967,7 @@ static void statPush(
   int i;
 
   /* The three function arguments */
-  Stat4Accum *p = (Stat4Accum*)sqlite3_value_blob(argv[0]);
+  StatAccum *p = (StatAccum*)sqlite3_value_blob(argv[0]);
   int iChng = sqlite3_value_int(argv[1]);
 
   UNUSED_PARAMETER( argc );
@@ -110039,7 +112980,9 @@ static void statPush(
     for(i=0; i<p->nCol; i++) p->current.anEq[i] = 1;
   }else{
     /* Second and subsequent calls get processed here */
-    samplePushPrevious(p, iChng);
+#ifdef SQLITE_ENABLE_STAT4
+    if( p->mxSample ) samplePushPrevious(p, iChng);
+#endif
 
     /* Update anDLt[], anLt[] and anEq[] to reflect the values that apply
     ** to the current row of the index. */
@@ -110049,26 +112992,25 @@ static void statPush(
     for(i=iChng; i<p->nCol; i++){
       p->current.anDLt[i]++;
 #ifdef SQLITE_ENABLE_STAT4
-      p->current.anLt[i] += p->current.anEq[i];
+      if( p->mxSample ) p->current.anLt[i] += p->current.anEq[i];
 #endif
       p->current.anEq[i] = 1;
     }
   }
-  p->nRow++;
-#ifdef SQLITE_ENABLE_STAT4
-  if( sqlite3_value_type(argv[2])==SQLITE_INTEGER ){
-    sampleSetRowidInt64(p->db, &p->current, sqlite3_value_int64(argv[2]));
-  }else{
-    sampleSetRowid(p->db, &p->current, sqlite3_value_bytes(argv[2]),
-                                       sqlite3_value_blob(argv[2]));
-  }
-  p->current.iHash = p->iPrn = p->iPrn*1103515245 + 12345;
-#endif
 
+  p->nRow++;
 #ifdef SQLITE_ENABLE_STAT4
-  {
-    tRowcnt nLt = p->current.anLt[p->nCol-1];
+  if( p->mxSample ){
+    tRowcnt nLt;
+    if( sqlite3_value_type(argv[2])==SQLITE_INTEGER ){
+      sampleSetRowidInt64(p->db, &p->current, sqlite3_value_int64(argv[2]));
+    }else{
+      sampleSetRowid(p->db, &p->current, sqlite3_value_bytes(argv[2]),
+                                         sqlite3_value_blob(argv[2]));
+    }
+    p->current.iHash = p->iPrn = p->iPrn*1103515245 + 12345;
 
+    nLt = p->current.anLt[p->nCol-1];
     /* Check if this is to be a periodic sample. If so, add it. */
     if( (nLt/p->nPSample)!=(nLt+1)/p->nPSample ){
       p->current.isPSample = 1;
@@ -110084,9 +113026,14 @@ static void statPush(
         sampleCopy(p, &p->aBest[i], &p->current);
       }
     }
-  }
+  }else
 #endif
+  if( p->nLimit && p->nRow>(tRowcnt)p->nLimit*(p->nSkipAhead+1) ){
+    p->nSkipAhead++;
+    sqlite3_result_int(context, p->current.anDLt[0]>0);
+  }
 }
+
 static const FuncDef statPushFuncdef = {
   2+IsStat4,       /* nArg */
   SQLITE_UTF8,     /* funcFlags */
@@ -110108,15 +113055,15 @@ static const FuncDef statPushFuncdef = {
 /*
 ** Implementation of the stat_get(P,J) SQL function.  This routine is
 ** used to query statistical information that has been gathered into
-** the Stat4Accum object by prior calls to stat_push().  The P parameter
-** has type BLOB but it is really just a pointer to the Stat4Accum object.
+** the StatAccum object by prior calls to stat_push().  The P parameter
+** has type BLOB but it is really just a pointer to the StatAccum object.
 ** The content to returned is determined by the parameter J
 ** which is one of the STAT_GET_xxxx values defined above.
 **
 ** The stat_get(P,J) function is not available to generic SQL.  It is
 ** inserted as part of a manually constructed bytecode program.  (See
 ** the callStatGet() routine below.)  It is guaranteed that the P
-** parameter will always be a poiner to a Stat4Accum object, never a
+** parameter will always be a pointer to a StatAccum object, never a
 ** NULL.
 **
 ** If STAT4 is not enabled, then J is always
@@ -110129,7 +113076,7 @@ static void statGet(
   int argc,
   sqlite3_value **argv
 ){
-  Stat4Accum *p = (Stat4Accum*)sqlite3_value_blob(argv[0]);
+  StatAccum *p = (StatAccum*)sqlite3_value_blob(argv[0]);
 #ifdef SQLITE_ENABLE_STAT4
   /* STAT4 has a parameter on this routine. */
   int eCall = sqlite3_value_int(argv[1]);
@@ -110138,6 +113085,7 @@ static void statGet(
        || eCall==STAT_GET_ROWID || eCall==STAT_GET_NLT
        || eCall==STAT_GET_NDLT
   );
+  assert( eCall==STAT_GET_STAT1 || p->mxSample );
   if( eCall==STAT_GET_STAT1 )
 #else
   assert( argc==1 );
@@ -110150,7 +113098,7 @@ static void statGet(
     ** the index. The first integer in the list is the total number of
     ** entries in the index. There is one additional integer in the list
     ** for each indexed column. This additional integer is an estimate of
-    ** the number of rows matched by a stabbing query on the index using
+    ** the number of rows matched by a equality query on the index using
     ** a key with the corresponding number of fields. In other words,
     ** if the index is on columns (a,b) and the sqlite_stat1 value is
     ** "100 10 2", then SQLite estimates that:
@@ -110173,7 +113121,8 @@ static void statGet(
       return;
     }
 
-    sqlite3_snprintf(24, zRet, "%llu", (u64)p->nRow);
+    sqlite3_snprintf(24, zRet, "%llu",
+        p->nSkipAhead ? (u64)p->nEst : (u64)p->nRow);
     z = zRet + sqlite3Strlen30(zRet);
     for(i=0; i<p->nKeyCol; i++){
       u64 nDistinct = p->current.anDLt[i] + 1;
@@ -110193,7 +113142,7 @@ static void statGet(
       p->iGet = 0;
     }
     if( p->iGet<p->nSample ){
-      Stat4Sample *pS = p->a + p->iGet;
+      StatSample *pS = p->a + p->iGet;
       if( pS->nRowid==0 ){
         sqlite3_result_int64(context, pS->u.iRowid);
       }else{
@@ -110249,19 +113198,42 @@ static const FuncDef statGetFuncdef = {
   {0}
 };
 
-static void callStatGet(Vdbe *v, int regStat4, int iParam, int regOut){
-  assert( regOut!=regStat4 && regOut!=regStat4+1 );
+static void callStatGet(Parse *pParse, int regStat, int iParam, int regOut){
 #ifdef SQLITE_ENABLE_STAT4
-  sqlite3VdbeAddOp2(v, OP_Integer, iParam, regStat4+1);
+  sqlite3VdbeAddOp2(pParse->pVdbe, OP_Integer, iParam, regStat+1);
 #elif SQLITE_DEBUG
   assert( iParam==STAT_GET_STAT1 );
 #else
   UNUSED_PARAMETER( iParam );
 #endif
-  sqlite3VdbeAddOp4(v, OP_Function0, 0, regStat4, regOut,
-                    (char*)&statGetFuncdef, P4_FUNCDEF);
-  sqlite3VdbeChangeP5(v, 1 + IsStat4);
+  assert( regOut!=regStat && regOut!=regStat+1 );
+  sqlite3VdbeAddFunctionCall(pParse, 0, regStat, regOut, 1+IsStat4,
+                             &statGetFuncdef, 0);
+}
+
+#ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS
+/* Add a comment to the most recent VDBE opcode that is the name
+** of the k-th column of the pIdx index.
+*/
+static void analyzeVdbeCommentIndexWithColumnName(
+  Vdbe *v,         /* Prepared statement under construction */
+  Index *pIdx,     /* Index whose column is being loaded */
+  int k            /* Which column index */
+){
+  int i;           /* Index of column in the table */
+  assert( k>=0 && k<pIdx->nColumn );
+  i = pIdx->aiColumn[k];
+  if( NEVER(i==XN_ROWID) ){
+    VdbeComment((v,"%s.rowid",pIdx->zName));
+  }else if( i==XN_EXPR ){
+    VdbeComment((v,"%s.expr(%d)",pIdx->zName, k));
+  }else{
+    VdbeComment((v,"%s.%s", pIdx->zName, pIdx->pTable->aCol[i].zName));
+  }
 }
+#else
+# define analyzeVdbeCommentIndexWithColumnName(a,b,c)
+#endif /* SQLITE_DEBUG */
 
 /*
 ** Generate code to do an analysis of all indices associated with
@@ -110285,12 +113257,11 @@ static void analyzeOneTable(
   int iDb;                     /* Index of database containing pTab */
   u8 needTableCnt = 1;         /* True to count the table */
   int regNewRowid = iMem++;    /* Rowid for the inserted record */
-  int regStat4 = iMem++;       /* Register to hold Stat4Accum object */
+  int regStat = iMem++;        /* Register to hold StatAccum object */
   int regChng = iMem++;        /* Index of changed index field */
-#ifdef SQLITE_ENABLE_STAT4
   int regRowid = iMem++;       /* Rowid argument passed to stat_push() */
-#endif
   int regTemp = iMem++;        /* Temporary use register */
+  int regTemp2 = iMem++;       /* Second temporary use register */
   int regTabname = iMem++;     /* Register containing table name */
   int regIdxname = iMem++;     /* Register containing index name */
   int regStat1 = iMem++;       /* Value for the stat column of sqlite_stat1 */
@@ -110328,7 +113299,7 @@ static void analyzeOneTable(
     pStat1 = (Table*)sqlite3DbMallocZero(db, sizeof(Table) + 13);
     if( pStat1==0 ) return;
     pStat1->zName = (char*)&pStat1[1];
-    memcpy(pStat1->zName, "sqlcipher_stat1", 16);
+    memcpy(pStat1->zName, "sqlite_stat1", 13);
     pStat1->nCol = 3;
     pStat1->iPKey = -1;
     sqlite3VdbeAddOp4(pParse->pVdbe, OP_Noop, 0, 0, 0,(char*)pStat1,P4_DYNBLOB);
@@ -110418,19 +113389,27 @@ static void analyzeOneTable(
     **    (1) the number of columns in the index including the rowid
     **        (or for a WITHOUT ROWID table, the number of PK columns),
     **    (2) the number of columns in the key without the rowid/pk
-    **    (3) the number of rows in the index,
-    **
-    **
-    ** The third argument is only used for STAT4
+    **    (3) estimated number of rows in the index,
     */
+    sqlite3VdbeAddOp2(v, OP_Integer, nCol, regStat+1);
+    assert( regRowid==regStat+2 );
+    sqlite3VdbeAddOp2(v, OP_Integer, pIdx->nKeyCol, regRowid);
 #ifdef SQLITE_ENABLE_STAT4
-    sqlite3VdbeAddOp2(v, OP_Count, iIdxCur, regStat4+3);
+    if( OptimizationEnabled(db, SQLITE_Stat4) ){
+      sqlite3VdbeAddOp2(v, OP_Count, iIdxCur, regTemp);
+      addrRewind = sqlite3VdbeAddOp1(v, OP_Rewind, iIdxCur);
+      VdbeCoverage(v);
+    }else
 #endif
-    sqlite3VdbeAddOp2(v, OP_Integer, nCol, regStat4+1);
-    sqlite3VdbeAddOp2(v, OP_Integer, pIdx->nKeyCol, regStat4+2);
-    sqlite3VdbeAddOp4(v, OP_Function0, 0, regStat4+1, regStat4,
-                     (char*)&statInitFuncdef, P4_FUNCDEF);
-    sqlite3VdbeChangeP5(v, 2+IsStat4);
+    {
+      addrRewind = sqlite3VdbeAddOp1(v, OP_Rewind, iIdxCur);
+      VdbeCoverage(v);
+      sqlite3VdbeAddOp3(v, OP_Count, iIdxCur, regTemp, 1);
+    }
+    assert( regTemp2==regStat+4 );
+    sqlite3VdbeAddOp2(v, OP_Integer, db->nAnalysisLimit, regTemp2);
+    sqlite3VdbeAddFunctionCall(pParse, 0, regStat+1, regStat, 4,
+                               &statInitFuncdef, 0);
 
     /* Implementation of the following:
     **
@@ -110440,8 +113419,6 @@ static void analyzeOneTable(
     **   goto next_push_0;
     **
     */
-    addrRewind = sqlite3VdbeAddOp1(v, OP_Rewind, iIdxCur);
-    VdbeCoverage(v);
     sqlite3VdbeAddOp2(v, OP_Integer, 0, regChng);
     addrNextRow = sqlite3VdbeCurrentAddr(v);
 
@@ -110474,6 +113451,7 @@ static void analyzeOneTable(
         char *pColl = (char*)sqlite3LocateCollSeq(pParse, pIdx->azColl[i]);
         sqlite3VdbeAddOp2(v, OP_Integer, i, regChng);
         sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, i, regTemp);
+        analyzeVdbeCommentIndexWithColumnName(v,pIdx,i);
         aGotoChng[i] =
         sqlite3VdbeAddOp4(v, OP_Ne, regTemp, 0, regPrev+i, pColl, P4_COLLSEQ);
         sqlite3VdbeChangeP5(v, SQLITE_NULLEQ);
@@ -110494,6 +113472,7 @@ static void analyzeOneTable(
       for(i=0; i<nColTest; i++){
         sqlite3VdbeJumpHere(v, aGotoChng[i]);
         sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, i, regPrev+i);
+        analyzeVdbeCommentIndexWithColumnName(v,pIdx,i);
       }
       sqlite3VdbeResolveLabel(v, endDistinctTest);
       sqlite3DbFree(db, aGotoChng);
@@ -110507,31 +113486,46 @@ static void analyzeOneTable(
     **   if !eof(csr) goto next_row;
     */
 #ifdef SQLITE_ENABLE_STAT4
-    assert( regRowid==(regStat4+2) );
-    if( HasRowid(pTab) ){
-      sqlite3VdbeAddOp2(v, OP_IdxRowid, iIdxCur, regRowid);
-    }else{
-      Index *pPk = sqlite3PrimaryKeyIndex(pIdx->pTable);
-      int j, k, regKey;
-      regKey = sqlite3GetTempRange(pParse, pPk->nKeyCol);
-      for(j=0; j<pPk->nKeyCol; j++){
-        k = sqlite3ColumnOfIndex(pIdx, pPk->aiColumn[j]);
-        assert( k>=0 && k<pIdx->nColumn );
-        sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, k, regKey+j);
-        VdbeComment((v, "%s", pTab->aCol[pPk->aiColumn[j]].zName));
+    if( OptimizationEnabled(db, SQLITE_Stat4) ){
+      assert( regRowid==(regStat+2) );
+      if( HasRowid(pTab) ){
+        sqlite3VdbeAddOp2(v, OP_IdxRowid, iIdxCur, regRowid);
+      }else{
+        Index *pPk = sqlite3PrimaryKeyIndex(pIdx->pTable);
+        int j, k, regKey;
+        regKey = sqlite3GetTempRange(pParse, pPk->nKeyCol);
+        for(j=0; j<pPk->nKeyCol; j++){
+          k = sqlite3TableColumnToIndex(pIdx, pPk->aiColumn[j]);
+          assert( k>=0 && k<pIdx->nColumn );
+          sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, k, regKey+j);
+          analyzeVdbeCommentIndexWithColumnName(v,pIdx,k);
+        }
+        sqlite3VdbeAddOp3(v, OP_MakeRecord, regKey, pPk->nKeyCol, regRowid);
+        sqlite3ReleaseTempRange(pParse, regKey, pPk->nKeyCol);
       }
-      sqlite3VdbeAddOp3(v, OP_MakeRecord, regKey, pPk->nKeyCol, regRowid);
-      sqlite3ReleaseTempRange(pParse, regKey, pPk->nKeyCol);
     }
 #endif
-    assert( regChng==(regStat4+1) );
-    sqlite3VdbeAddOp4(v, OP_Function0, 1, regStat4, regTemp,
-                     (char*)&statPushFuncdef, P4_FUNCDEF);
-    sqlite3VdbeChangeP5(v, 2+IsStat4);
-    sqlite3VdbeAddOp2(v, OP_Next, iIdxCur, addrNextRow); VdbeCoverage(v);
+    assert( regChng==(regStat+1) );
+    {
+      sqlite3VdbeAddFunctionCall(pParse, 1, regStat, regTemp, 2+IsStat4,
+                                 &statPushFuncdef, 0);
+      if( db->nAnalysisLimit ){
+        int j1, j2, j3;
+        j1 = sqlite3VdbeAddOp1(v, OP_IsNull, regTemp); VdbeCoverage(v);
+        j2 = sqlite3VdbeAddOp1(v, OP_If, regTemp); VdbeCoverage(v);
+        j3 = sqlite3VdbeAddOp4Int(v, OP_SeekGT, iIdxCur, 0, regPrev, 1);
+        VdbeCoverage(v);
+        sqlite3VdbeJumpHere(v, j1);
+        sqlite3VdbeAddOp2(v, OP_Next, iIdxCur, addrNextRow); VdbeCoverage(v);
+        sqlite3VdbeJumpHere(v, j2);
+        sqlite3VdbeJumpHere(v, j3);
+      }else{
+        sqlite3VdbeAddOp2(v, OP_Next, iIdxCur, addrNextRow); VdbeCoverage(v);
+      }
+    }
 
     /* Add the entry to the stat1 table. */
-    callStatGet(v, regStat4, STAT_GET_STAT1, regStat1);
+    callStatGet(pParse, regStat, STAT_GET_STAT1, regStat1);
     assert( "BBB"[0]==SQLITE_AFF_TEXT );
     sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 3, regTemp, "BBB", 0);
     sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur, regNewRowid);
@@ -110543,7 +113537,7 @@ static void analyzeOneTable(
 
     /* Add the entries to the stat4 table. */
 #ifdef SQLITE_ENABLE_STAT4
-    {
+    if( OptimizationEnabled(db, SQLITE_Stat4) && db->nAnalysisLimit==0 ){
       int regEq = regStat1;
       int regLt = regStat1+1;
       int regDLt = regStat1+2;
@@ -110557,12 +113551,12 @@ static void analyzeOneTable(
       pParse->nMem = MAX(pParse->nMem, regCol+nCol);
 
       addrNext = sqlite3VdbeCurrentAddr(v);
-      callStatGet(v, regStat4, STAT_GET_ROWID, regSampleRowid);
+      callStatGet(pParse, regStat, STAT_GET_ROWID, regSampleRowid);
       addrIsNull = sqlite3VdbeAddOp1(v, OP_IsNull, regSampleRowid);
       VdbeCoverage(v);
-      callStatGet(v, regStat4, STAT_GET_NEQ, regEq);
-      callStatGet(v, regStat4, STAT_GET_NLT, regLt);
-      callStatGet(v, regStat4, STAT_GET_NDLT, regDLt);
+      callStatGet(pParse, regStat, STAT_GET_NEQ, regEq);
+      callStatGet(pParse, regStat, STAT_GET_NLT, regLt);
+      callStatGet(pParse, regStat, STAT_GET_NDLT, regDLt);
       sqlite3VdbeAddOp4Int(v, seekOp, iTabCur, addrNext, regSampleRowid, 0);
       VdbeCoverage(v);
       for(i=0; i<nCol; i++){
@@ -111107,10 +114101,10 @@ static int loadStat4(sqlite3 *db, const char *zDb){
   int rc = SQLITE_OK;             /* Result codes from subroutines */
 
   assert( db->lookaside.bDisable );
-  if( sqlite3FindTable(db, "sqlcipher_stat4", zDb) ){
+  if( sqlite3FindTable(db, "sqlite_stat4", zDb) ){
     rc = loadStatTbl(db,
-      "SELECT idx,count(*) FROM %Q.sqlcipher_stat4 GROUP BY idx",
-      "SELECT idx,neq,nlt,ndlt,sample FROM %Q.sqlcipher_stat4",
+      "SELECT idx,count(*) FROM %Q.sqlite_stat4 GROUP BY idx",
+      "SELECT idx,neq,nlt,ndlt,sample FROM %Q.sqlite_stat4",
       zDb
     );
   }
@@ -111166,9 +114160,9 @@ SQLITE_PRIVATE int sqlite3AnalysisLoad(sqlite3 *db, int iDb){
   /* Load new statistics out of the sqlite_stat1 table */
   sInfo.db = db;
   sInfo.zDatabase = db->aDb[iDb].zDbSName;
-  if( sqlite3FindTable(db, "sqlcipher_stat1", sInfo.zDatabase)!=0 ){
+  if( sqlite3FindTable(db, "sqlite_stat1", sInfo.zDatabase)!=0 ){
     zSql = sqlite3MPrintf(db,
-        "SELECT tbl,idx,stat FROM %Q.sqlcipher_stat1", sInfo.zDatabase);
+        "SELECT tbl,idx,stat FROM %Q.sqlite_stat1", sInfo.zDatabase);
     if( zSql==0 ){
       rc = SQLITE_NOMEM_BKPT;
     }else{
@@ -111187,9 +114181,9 @@ SQLITE_PRIVATE int sqlite3AnalysisLoad(sqlite3 *db, int iDb){
   /* Load the statistics from the sqlite_stat4 table. */
 #ifdef SQLITE_ENABLE_STAT4
   if( rc==SQLITE_OK ){
-    db->lookaside.bDisable++;
+    DisableLookaside;
     rc = loadStat4(db, sInfo.zDatabase);
-    db->lookaside.bDisable--;
+    EnableLookaside;
   }
   for(i=sqliteHashFirst(&pSchema->idxHash); i; i=sqliteHashNext(i)){
     Index *pIdx = sqliteHashData(i);
@@ -111257,6 +114251,17 @@ static int resolveAttachExpr(NameContext *pName, Expr *pExpr)
 }
 
 /*
+** Return true if zName points to a name that may be used to refer to
+** database iDb attached to handle db.
+*/
+SQLITE_PRIVATE int sqlite3DbIsNamed(sqlite3 *db, int iDb, const char *zName){
+  return (
+      sqlite3StrICmp(db->aDb[iDb].zDbSName, zName)==0
+   || (iDb==0 && sqlite3StrICmp("main", zName)==0)
+  );
+}
+
+/*
 ** An SQL user-function registered to do the work of an ATTACH statement. The
 ** three arguments to the function come directly from an attach statement:
 **
@@ -111328,9 +114333,8 @@ static void attachFunc(
       goto attach_error;
     }
     for(i=0; i<db->nDb; i++){
-      char *z = db->aDb[i].zDbSName;
-      assert( z && zName );
-      if( sqlite3StrICmp(z, zName)==0 ){
+      assert( zName );
+      if( sqlite3DbIsNamed(db, i, zName) ){
         zErrDyn = sqlite3MPrintf(db, "database %s is already in use", zName);
         goto attach_error;
       }
@@ -111399,7 +114403,7 @@ static void attachFunc(
     rc = SQLITE_NOMEM_BKPT;
   }
 
-
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
   if( rc==SQLITE_OK ){
     extern int sqlite3CodecAttach(sqlite3*, int, const void*, int);
@@ -111426,7 +114430,7 @@ static void attachFunc(
         ** use the key from the main database. */
         if( sqlite3CodecQueryParameters(db, zName, zPath)==0 ){
           sqlite3CodecGetKey(db, 0, (void**)&zKey, &nKey);
-          if( nKey || sqlite3BtreeGetOptimalReserve(db->aDb[0].pBt)>0 ){
+          if( nKey || sqlite3BtreeGetRequestedReserve(db->aDb[0].pBt)>0 ){
             rc = sqlite3CodecAttach(db, db->nDb-1, zKey, nKey);
           }
         }
@@ -111434,7 +114438,8 @@ static void attachFunc(
     }
   }
 #endif
-  sqlite3_free( zPath );
+/* END SQLCIPHER */
+  sqlite3_free_filename( zPath );
 
   /* If the file was opened successfully, read the schema for the new database.
   ** If this fails, or if opening the file failed, then close the file and
@@ -111519,7 +114524,7 @@ static void detachFunc(
   for(i=0; i<db->nDb; i++){
     pDb = &db->aDb[i];
     if( pDb->pBt==0 ) continue;
-    if( sqlite3StrICmp(pDb->zDbSName, zName)==0 ) break;
+    if( sqlite3DbIsNamed(db, i, zName) ) break;
   }
 
   if( i>=db->nDb ){
@@ -111612,11 +114617,8 @@ static void codeAttach(
 
   assert( v || db->mallocFailed );
   if( v ){
-    sqlite3VdbeAddOp4(v, OP_Function0, 0, regArgs+3-pFunc->nArg, regArgs+3,
-                      (char *)pFunc, P4_FUNCDEF);
-    assert( pFunc->nArg==-1 || (pFunc->nArg&0xff)==pFunc->nArg );
-    sqlite3VdbeChangeP5(v, (u8)(pFunc->nArg));
-
+    sqlite3VdbeAddFunctionCall(pParse, 0, regArgs+3-pFunc->nArg, regArgs+3,
+                               pFunc->nArg, pFunc, 0);
     /* Code an OP_Expire. For an ATTACH statement, set P1 to true (expire this
     ** statement only). For DETACH, set it to false (expire all existing
     ** statements).
@@ -111691,7 +114693,7 @@ SQLITE_PRIVATE void sqlite3FixInit(
   pFix->pSchema = db->aDb[iDb].pSchema;
   pFix->zType = zType;
   pFix->pName = pName;
-  pFix->bVarOnly = (iDb==1);
+  pFix->bTemp = (iDb==1);
 }
 
 /*
@@ -111713,22 +114715,24 @@ SQLITE_PRIVATE int sqlite3FixSrcList(
   SrcList *pList       /* The Source list to check and modify */
 ){
   int i;
-  const char *zDb;
   struct SrcList_item *pItem;
+  sqlite3 *db = pFix->pParse->db;
+  int iDb = sqlite3FindDbName(db, pFix->zDb);
 
   if( NEVER(pList==0) ) return 0;
-  zDb = pFix->zDb;
+
   for(i=0, pItem=pList->a; i<pList->nSrc; i++, pItem++){
-    if( pFix->bVarOnly==0 ){
-      if( pItem->zDatabase && sqlite3StrICmp(pItem->zDatabase, zDb) ){
+    if( pFix->bTemp==0 ){
+      if( pItem->zDatabase && iDb!=sqlite3FindDbName(db, pItem->zDatabase) ){
         sqlite3ErrorMsg(pFix->pParse,
             "%s %T cannot reference objects in database %s",
             pFix->zType, pFix->pName, pItem->zDatabase);
         return 1;
       }
-      sqlite3DbFree(pFix->pParse->db, pItem->zDatabase);
+      sqlite3DbFree(db, pItem->zDatabase);
       pItem->zDatabase = 0;
       pItem->pSchema = pFix->pSchema;
+      pItem->fg.fromDDL = 1;
     }
 #if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_TRIGGER)
     if( sqlite3FixSelect(pFix, pItem->pSelect) ) return 1;
@@ -111784,7 +114788,7 @@ SQLITE_PRIVATE int sqlite3FixExpr(
   Expr *pExpr        /* The expression to be fixed to one database */
 ){
   while( pExpr ){
-    ExprSetProperty(pExpr, EP_Indirect);
+    if( !pFix->bTemp ) ExprSetProperty(pExpr, EP_FromDDL);
     if( pExpr->op==TK_VARIABLE ){
       if( pFix->pParse->db->init.busy ){
         pExpr->op = TK_NULL;
@@ -111837,6 +114841,9 @@ SQLITE_PRIVATE int sqlite3FixTriggerStep(
     if( sqlite3FixExprList(pFix, pStep->pExprList) ){
       return 1;
     }
+    if( pStep->pFrom && sqlite3FixSrcList(pFix, pStep->pFrom) ){
+      return 1;
+    }
 #ifndef SQLITE_OMIT_UPSERT
     if( pStep->pUpsert ){
       Upsert *pUp = pStep->pUpsert;
@@ -112166,7 +115173,7 @@ SQLITE_PRIVATE void sqlite3AuthContextPop(AuthContext *pContext){
 */
 struct TableLock {
   int iDb;               /* The database containing the table to be locked */
-  int iTab;              /* The root page of the table to be locked */
+  Pgno iTab;             /* The root page of the table to be locked */
   u8 isWriteLock;        /* True for write lock.  False for a read lock */
   const char *zLockName; /* Name of the table */
 };
@@ -112184,7 +115191,7 @@ struct TableLock {
 SQLITE_PRIVATE void sqlite3TableLock(
   Parse *pParse,     /* Parsing context */
   int iDb,           /* Index of the database containing the table to lock */
-  int iTab,          /* Root page number of the table to be locked */
+  Pgno iTab,         /* Root page number of the table to be locked */
   u8 isWriteLock,    /* True for a write lock */
   const char *zName  /* Name of the table to be locked */
 ){
@@ -112342,12 +115349,21 @@ SQLITE_PRIVATE void sqlite3FinishCoding(Parse *pParse){
       */
       sqlite3AutoincrementBegin(pParse);
 
-      /* Code constant expressions that where factored out of inner loops */
+      /* Code constant expressions that where factored out of inner loops.
+      **
+      ** The pConstExpr list might also contain expressions that we simply
+      ** want to keep around until the Parse object is deleted.  Such
+      ** expressions have iConstExprReg==0.  Do not generate code for
+      ** those expressions, of course.
+      */
       if( pParse->pConstExpr ){
         ExprList *pEL = pParse->pConstExpr;
         pParse->okConstFactor = 0;
         for(i=0; i<pEL->nExpr; i++){
-          sqlite3ExprCode(pParse, pEL->a[i].pExpr, pEL->a[i].u.iConstExprReg);
+          int iReg = pEL->a[i].u.iConstExprReg;
+          if( iReg>0 ){
+            sqlite3ExprCode(pParse, pEL->a[i].pExpr, iReg);
+          }
         }
       }
 
@@ -112379,7 +115395,7 @@ SQLITE_PRIVATE void sqlite3FinishCoding(Parse *pParse){
 ** outermost parser.
 **
 ** Not everything is nestable.  This facility is designed to permit
-** INSERT, UPDATE, and DELETE operations against SQLITE_MASTER.  Use
+** INSERT, UPDATE, and DELETE operations against the schema table.  Use
 ** care if you decide to try to use this routine for some other purposes.
 */
 SQLITE_PRIVATE void sqlite3NestedParse(Parse *pParse, const char *zFormat, ...){
@@ -112447,22 +115463,59 @@ SQLITE_PRIVATE Table *sqlite3FindTable(sqlite3 *db, const char *zName, const cha
     return 0;
   }
 #endif
-  while(1){
-    for(i=OMIT_TEMPDB; i<db->nDb; i++){
-      int j = (i<2) ? i^1 : i;   /* Search TEMP before MAIN */
-      if( zDatabase==0 || sqlite3StrICmp(zDatabase, db->aDb[j].zDbSName)==0 ){
-        assert( sqlite3SchemaMutexHeld(db, j, 0) );
-        p = sqlite3HashFind(&db->aDb[j].pSchema->tblHash, zName);
-        if( p ) return p;
+  if( zDatabase ){
+    for(i=0; i<db->nDb; i++){
+      if( sqlite3StrICmp(zDatabase, db->aDb[i].zDbSName)==0 ) break;
+    }
+    if( i>=db->nDb ){
+      /* No match against the official names.  But always match "main"
+      ** to schema 0 as a legacy fallback. */
+      if( sqlite3StrICmp(zDatabase,"main")==0 ){
+        i = 0;
+      }else{
+        return 0;
+      }
+    }
+    p = sqlite3HashFind(&db->aDb[i].pSchema->tblHash, zName);
+    if( p==0 && sqlite3StrNICmp(zName, "sqlite_", 7)==0 ){
+      if( i==1 ){
+        if( sqlite3StrICmp(zName+7, &ALT_TEMP_SCHEMA_TABLE[7])==0
+         || sqlite3StrICmp(zName+7, &ALT_SCHEMA_TABLE[7])==0
+         || sqlite3StrICmp(zName+7, &DFLT_SCHEMA_TABLE[7])==0
+        ){
+          p = sqlite3HashFind(&db->aDb[1].pSchema->tblHash,
+                              DFLT_TEMP_SCHEMA_TABLE);
+        }
+      }else{
+        if( sqlite3StrICmp(zName+7, &ALT_SCHEMA_TABLE[7])==0 ){
+          p = sqlite3HashFind(&db->aDb[i].pSchema->tblHash,
+                              DFLT_SCHEMA_TABLE);
+        }
+      }
+    }
+  }else{
+    /* Match against TEMP first */
+    p = sqlite3HashFind(&db->aDb[1].pSchema->tblHash, zName);
+    if( p ) return p;
+    /* The main database is second */
+    p = sqlite3HashFind(&db->aDb[0].pSchema->tblHash, zName);
+    if( p ) return p;
+    /* Attached databases are in order of attachment */
+    for(i=2; i<db->nDb; i++){
+      assert( sqlite3SchemaMutexHeld(db, i, 0) );
+      p = sqlite3HashFind(&db->aDb[i].pSchema->tblHash, zName);
+      if( p ) break;
+    }
+    if( p==0 && sqlite3StrNICmp(zName, "sqlite_", 7)==0 ){
+      if( sqlite3StrICmp(zName+7, &ALT_SCHEMA_TABLE[7])==0 ){
+        p = sqlite3HashFind(&db->aDb[0].pSchema->tblHash, DFLT_SCHEMA_TABLE);
+      }else if( sqlite3StrICmp(zName+7, &ALT_TEMP_SCHEMA_TABLE[7])==0 ){
+        p = sqlite3HashFind(&db->aDb[1].pSchema->tblHash,
+                            DFLT_TEMP_SCHEMA_TABLE);
       }
     }
-    /* Not found.  If the name we were looking for was temp.sqlite_master
-    ** then change the name to sqlite_temp_master and try again. */
-    if( sqlite3StrICmp(zName, MASTER_NAME)!=0 ) break;
-    if( sqlite3_stricmp(zDatabase, db->aDb[1].zDbSName)!=0 ) break;
-    zName = TEMP_MASTER_NAME;
   }
-  return 0;
+  return p;
 }
 
 /*
@@ -112572,7 +115625,7 @@ SQLITE_PRIVATE Index *sqlite3FindIndex(sqlite3 *db, const char *zName, const cha
     int j = (i<2) ? i^1 : i;  /* Search TEMP before MAIN */
     Schema *pSchema = db->aDb[j].pSchema;
     assert( pSchema );
-    if( zDb && sqlite3StrICmp(zDb, db->aDb[j].zDbSName) ) continue;
+    if( zDb && sqlite3DbIsNamed(db, j, zDb)==0 ) continue;
     assert( sqlite3SchemaMutexHeld(db, j, 0) );
     p = sqlite3HashFind(&pSchema->idxHash, zName);
     if( p ) break;
@@ -112725,6 +115778,7 @@ SQLITE_PRIVATE void sqlite3DeleteColumnNames(sqlite3 *db, Table *pTable){
   assert( pTable!=0 );
   if( (pCol = pTable->aCol)!=0 ){
     for(i=0; i<pTable->nCol; i++, pCol++){
+      assert( pCol->zName==0 || pCol->hName==sqlite3StrIHash(pCol->zName) );
       sqlite3DbFree(db, pCol->zName);
       sqlite3ExprDelete(db, pCol->pDflt);
       sqlite3DbFree(db, pCol->zColl);
@@ -112851,13 +115905,13 @@ SQLITE_PRIVATE char *sqlite3NameFromToken(sqlite3 *db, Token *pName){
 }
 
 /*
-** Open the sqlite_master table stored in database number iDb for
+** Open the sqlite_schema table stored in database number iDb for
 ** writing. The table is opened using cursor 0.
 */
-SQLITE_PRIVATE void sqlite3OpenMasterTable(Parse *p, int iDb){
+SQLITE_PRIVATE void sqlite3OpenSchemaTable(Parse *p, int iDb){
   Vdbe *v = sqlite3GetVdbe(p);
-  sqlite3TableLock(p, iDb, MASTER_ROOT, 1, MASTER_NAME);
-  sqlite3VdbeAddOp4Int(v, OP_OpenWrite, 0, MASTER_ROOT, iDb, 5);
+  sqlite3TableLock(p, iDb, SCHEMA_ROOT, 1, DFLT_SCHEMA_TABLE);
+  sqlite3VdbeAddOp4Int(v, OP_OpenWrite, 0, SCHEMA_ROOT, iDb, 5);
   if( p->nTab==0 ){
     p->nTab = 1;
   }
@@ -112965,7 +116019,7 @@ SQLITE_PRIVATE int sqlite3WritableSchema(sqlite3 *db){
 ** "sqlite_" (in upper, lower or mixed case). This portion of the namespace
 ** is reserved for internal use.
 **
-** When parsing the sqlite_master table, this routine also checks to
+** When parsing the sqlite_schema table, this routine also checks to
 ** make sure the "type", "name", and "tbl_name" columns are consistent
 ** with the SQL.
 */
@@ -112976,7 +116030,10 @@ SQLITE_PRIVATE int sqlite3CheckObjectName(
   const char *zTblName      /* Parent table name for triggers and indexes */
 ){
   sqlite3 *db = pParse->db;
-  if( sqlite3WritableSchema(db) || db->init.imposterTable ){
+  if( sqlite3WritableSchema(db)
+   || db->init.imposterTable
+   || !sqlite3Config.bExtraSchemaChecks
+  ){
     /* Skip these error checks for writable_schema=ON */
     return SQLITE_OK;
   }
@@ -112985,19 +116042,18 @@ SQLITE_PRIVATE int sqlite3CheckObjectName(
      || sqlite3_stricmp(zName, db->init.azInit[1])
      || sqlite3_stricmp(zTblName, db->init.azInit[2])
     ){
-      if( sqlite3Config.bExtraSchemaChecks ){
-        sqlite3ErrorMsg(pParse, ""); /* corruptSchema() will supply the error */
-        return SQLITE_ERROR;
-      }
+      sqlite3ErrorMsg(pParse, ""); /* corruptSchema() will supply the error */
+      return SQLITE_ERROR;
     }
   }else{
-    if( pParse->nested==0
-     && 0==sqlite3StrNICmp(zName, "sqlite_", 7)
+    if( (pParse->nested==0 && 0==sqlite3StrNICmp(zName, "sqlite_", 7))
+     || (sqlite3ReadOnlyShadowTables(db) && sqlite3ShadowTableName(db, zName))
     ){
       sqlite3ErrorMsg(pParse, "object name reserved for internal use: %s",
                       zName);
       return SQLITE_ERROR;
     }
+
   }
   return SQLITE_OK;
 }
@@ -113012,10 +116068,12 @@ SQLITE_PRIVATE Index *sqlite3PrimaryKeyIndex(Table *pTab){
 }
 
 /*
-** Return the column of index pIdx that corresponds to table
-** column iCol.  Return -1 if not found.
+** Convert an table column number into a index column number.  That is,
+** for the column iCol in the table (as defined by the CREATE TABLE statement)
+** find the (first) offset of that column in index pIdx.  Or return -1
+** if column iCol is not used in index pIdx.
 */
-SQLITE_PRIVATE i16 sqlite3ColumnOfIndex(Index *pIdx, i16 iCol){
+SQLITE_PRIVATE i16 sqlite3TableColumnToIndex(Index *pIdx, i16 iCol){
   int i;
   for(i=0; i<pIdx->nColumn; i++){
     if( iCol==pIdx->aiColumn[i] ) return i;
@@ -113023,6 +116081,84 @@ SQLITE_PRIVATE i16 sqlite3ColumnOfIndex(Index *pIdx, i16 iCol){
   return -1;
 }
 
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+/* Convert a storage column number into a table column number.
+**
+** The storage column number (0,1,2,....) is the index of the value
+** as it appears in the record on disk.  The true column number
+** is the index (0,1,2,...) of the column in the CREATE TABLE statement.
+**
+** The storage column number is less than the table column number if
+** and only there are VIRTUAL columns to the left.
+**
+** If SQLITE_OMIT_GENERATED_COLUMNS, this routine is a no-op macro.
+*/
+SQLITE_PRIVATE i16 sqlite3StorageColumnToTable(Table *pTab, i16 iCol){
+  if( pTab->tabFlags & TF_HasVirtual ){
+    int i;
+    for(i=0; i<=iCol; i++){
+      if( pTab->aCol[i].colFlags & COLFLAG_VIRTUAL ) iCol++;
+    }
+  }
+  return iCol;
+}
+#endif
+
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+/* Convert a table column number into a storage column number.
+**
+** The storage column number (0,1,2,....) is the index of the value
+** as it appears in the record on disk.  Or, if the input column is
+** the N-th virtual column (zero-based) then the storage number is
+** the number of non-virtual columns in the table plus N.
+**
+** The true column number is the index (0,1,2,...) of the column in
+** the CREATE TABLE statement.
+**
+** If the input column is a VIRTUAL column, then it should not appear
+** in storage.  But the value sometimes is cached in registers that
+** follow the range of registers used to construct storage.  This
+** avoids computing the same VIRTUAL column multiple times, and provides
+** values for use by OP_Param opcodes in triggers.  Hence, if the
+** input column is a VIRTUAL table, put it after all the other columns.
+**
+** In the following, N means "normal column", S means STORED, and
+** V means VIRTUAL.  Suppose the CREATE TABLE has columns like this:
+**
+**        CREATE TABLE ex(N,S,V,N,S,V,N,S,V);
+**                     -- 0 1 2 3 4 5 6 7 8
+**
+** Then the mapping from this function is as follows:
+**
+**    INPUTS:     0 1 2 3 4 5 6 7 8
+**    OUTPUTS:    0 1 6 2 3 7 4 5 8
+**
+** So, in other words, this routine shifts all the virtual columns to
+** the end.
+**
+** If SQLITE_OMIT_GENERATED_COLUMNS then there are no virtual columns and
+** this routine is a no-op macro.  If the pTab does not have any virtual
+** columns, then this routine is no-op that always return iCol.  If iCol
+** is negative (indicating the ROWID column) then this routine return iCol.
+*/
+SQLITE_PRIVATE i16 sqlite3TableColumnToStorage(Table *pTab, i16 iCol){
+  int i;
+  i16 n;
+  assert( iCol<pTab->nCol );
+  if( (pTab->tabFlags & TF_HasVirtual)==0 || iCol<0 ) return iCol;
+  for(i=0, n=0; i<iCol; i++){
+    if( (pTab->aCol[i].colFlags & COLFLAG_VIRTUAL)==0 ) n++;
+  }
+  if( pTab->aCol[i].colFlags & COLFLAG_VIRTUAL ){
+    /* iCol is a virtual column itself */
+    return pTab->nNVCol + i - n;
+  }else{
+    /* iCol is a normal or stored column */
+    return n;
+  }
+}
+#endif
+
 /*
 ** Begin constructing a new table representation in memory.  This is
 ** the first of several action routines that get called in response
@@ -113056,7 +116192,7 @@ SQLITE_PRIVATE void sqlite3StartTable(
   Token *pName;    /* Unqualified name of the table to create */
 
   if( db->init.busy && db->init.newTnum==1 ){
-    /* Special case:  Parsing the sqlite_master or sqlite_temp_master schema */
+    /* Special case:  Parsing the sqlite_schema or sqlite_temp_schema schema */
     iDb = db->init.iDb;
     zName = sqlite3DbStrDup(db, SCHEMA_TABLE(iDb));
     pName = pName1;
@@ -113155,14 +116291,14 @@ SQLITE_PRIVATE void sqlite3StartTable(
   ** so that INSERT can find the table easily.
   */
 #ifndef SQLITE_OMIT_AUTOINCREMENT
-  if( !pParse->nested && strcmp(zName, "sqlcipher_sequence")==0 ){
+  if( !pParse->nested && strcmp(zName, "sqlite_sequence")==0 ){
     assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
     pTable->pSchema->pSeqTab = pTable;
   }
 #endif
 
   /* Begin generating the code that will insert the table record into
-  ** the SQLITE_MASTER table.  Note in particular that we must go ahead
+  ** the schema table.  Note in particular that we must go ahead
   ** and allocate the record number for the table entry now.  Before any
   ** PRIMARY KEY or UNIQUE keywords are parsed.  Those keywords will cause
   ** indices to be created and the table record must come before the
@@ -113198,7 +116334,7 @@ SQLITE_PRIVATE void sqlite3StartTable(
     sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_TEXT_ENCODING, ENC(db));
     sqlite3VdbeJumpHere(v, addr1);
 
-    /* This just creates a place-holder record in the sqlite_master table.
+    /* This just creates a place-holder record in the sqlite_schema table.
     ** The record created does not contain anything yet.  It will be replaced
     ** by the real entry in code generated at sqlite3EndTable().
     **
@@ -113216,7 +116352,7 @@ SQLITE_PRIVATE void sqlite3StartTable(
       pParse->addrCrTab =
          sqlite3VdbeAddOp3(v, OP_CreateBtree, iDb, reg2, BTREE_INTKEY);
     }
-    sqlite3OpenMasterTable(pParse, iDb);
+    sqlite3OpenSchemaTable(pParse, iDb);
     sqlite3VdbeAddOp2(v, OP_NewRowid, 0, reg1);
     sqlite3VdbeAddOp4(v, OP_Blob, 6, reg3, 0, nullRow, P4_STATIC);
     sqlite3VdbeAddOp3(v, OP_Insert, 0, reg3, reg1);
@@ -113292,6 +116428,7 @@ SQLITE_PRIVATE void sqlite3AddColumn(Parse *pParse, Token *pName, Token *pType){
   pCol = &p->aCol[p->nCol];
   memset(pCol, 0, sizeof(p->aCol[0]));
   pCol->zName = z;
+  pCol->hName = sqlite3StrIHash(z);
   sqlite3ColumnPropertiesFromName(p, pCol);
 
   if( pType->n==0 ){
@@ -113313,6 +116450,7 @@ SQLITE_PRIVATE void sqlite3AddColumn(Parse *pParse, Token *pName, Token *pType){
     pCol->colFlags |= COLFLAG_HASTYPE;
   }
   p->nCol++;
+  p->nNVCol++;
   pParse->constraintName.n = 0;
 }
 
@@ -113457,10 +116595,17 @@ SQLITE_PRIVATE void sqlite3AddDefaultValue(
   sqlite3 *db = pParse->db;
   p = pParse->pNewTable;
   if( p!=0 ){
+    int isInit = db->init.busy && db->init.iDb!=1;
     pCol = &(p->aCol[p->nCol-1]);
-    if( !sqlite3ExprIsConstantOrFunction(pExpr, db->init.busy) ){
+    if( !sqlite3ExprIsConstantOrFunction(pExpr, isInit) ){
       sqlite3ErrorMsg(pParse, "default value of column [%s] is not constant",
           pCol->zName);
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+    }else if( pCol->colFlags & COLFLAG_GENERATED ){
+      testcase( pCol->colFlags & COLFLAG_VIRTUAL );
+      testcase( pCol->colFlags & COLFLAG_STORED );
+      sqlite3ErrorMsg(pParse, "cannot use DEFAULT on a generated column");
+#endif
     }else{
       /* A copy of pExpr is used instead of the original, as pExpr contains
       ** tokens that point to volatile memory.
@@ -113507,6 +116652,21 @@ static void sqlite3StringToId(Expr *p){
 }
 
 /*
+** Tag the given column as being part of the PRIMARY KEY
+*/
+static void makeColumnPartOfPrimaryKey(Parse *pParse, Column *pCol){
+  pCol->colFlags |= COLFLAG_PRIMKEY;
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+  if( pCol->colFlags & COLFLAG_GENERATED ){
+    testcase( pCol->colFlags & COLFLAG_VIRTUAL );
+    testcase( pCol->colFlags & COLFLAG_STORED );
+    sqlite3ErrorMsg(pParse,
+      "generated columns cannot be part of the PRIMARY KEY");
+  }
+#endif
+}
+
+/*
 ** Designate the PRIMARY KEY for the table.  pList is a list of names
 ** of columns that form the primary key.  If pList is NULL, then the
 ** most recently added column of the table is the primary key.
@@ -113545,7 +116705,7 @@ SQLITE_PRIVATE void sqlite3AddPrimaryKey(
   if( pList==0 ){
     iCol = pTab->nCol - 1;
     pCol = &pTab->aCol[iCol];
-    pCol->colFlags |= COLFLAG_PRIMKEY;
+    makeColumnPartOfPrimaryKey(pParse, pCol);
     nTerm = 1;
   }else{
     nTerm = pList->nExpr;
@@ -113558,7 +116718,7 @@ SQLITE_PRIVATE void sqlite3AddPrimaryKey(
         for(iCol=0; iCol<pTab->nCol; iCol++){
           if( sqlite3StrICmp(zCName, pTab->aCol[iCol].zName)==0 ){
             pCol = &pTab->aCol[iCol];
-            pCol->colFlags |= COLFLAG_PRIMKEY;
+            makeColumnPartOfPrimaryKey(pParse, pCol);
             break;
           }
         }
@@ -113579,6 +116739,7 @@ SQLITE_PRIVATE void sqlite3AddPrimaryKey(
     assert( autoInc==0 || autoInc==1 );
     pTab->tabFlags |= autoInc*TF_Autoincrement;
     if( pList ) pParse->iPkSortOrder = pList->a[0].sortFlags;
+    (void)sqlite3HasExplicitNulls(pParse, pList);
   }else if( autoInc ){
 #ifndef SQLITE_OMIT_AUTOINCREMENT
     sqlite3ErrorMsg(pParse, "AUTOINCREMENT is only allowed on an "
@@ -113655,41 +116816,58 @@ SQLITE_PRIVATE void sqlite3AddCollateType(Parse *pParse, Token *pToken){
   }
 }
 
-/*
-** This function returns the collation sequence for database native text
-** encoding identified by the string zName, length nName.
-**
-** If the requested collation sequence is not available, or not available
-** in the database native encoding, the collation factory is invoked to
-** request it. If the collation factory does not supply such a sequence,
-** and the sequence is available in another text encoding, then that is
-** returned instead.
-**
-** If no versions of the requested collations sequence are available, or
-** another error occurs, NULL is returned and an error message written into
-** pParse.
-**
-** This routine is a wrapper around sqlite3FindCollSeq().  This routine
-** invokes the collation factory if the named collation cannot be found
-** and generates an error message.
-**
-** See also: sqlite3FindCollSeq(), sqlite3GetCollSeq()
+/* Change the most recently parsed column to be a GENERATED ALWAYS AS
+** column.
 */
-SQLITE_PRIVATE CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char *zName){
-  sqlite3 *db = pParse->db;
-  u8 enc = ENC(db);
-  u8 initbusy = db->init.busy;
-  CollSeq *pColl;
-
-  pColl = sqlite3FindCollSeq(db, enc, zName, initbusy);
-  if( !initbusy && (!pColl || !pColl->xCmp) ){
-    pColl = sqlite3GetCollSeq(pParse, enc, pColl, zName);
+SQLITE_PRIVATE void sqlite3AddGenerated(Parse *pParse, Expr *pExpr, Token *pType){
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+  u8 eType = COLFLAG_VIRTUAL;
+  Table *pTab = pParse->pNewTable;
+  Column *pCol;
+  if( pTab==0 ){
+    /* generated column in an CREATE TABLE IF NOT EXISTS that already exists */
+    goto generated_done;
+  }
+  pCol = &(pTab->aCol[pTab->nCol-1]);
+  if( IN_DECLARE_VTAB ){
+    sqlite3ErrorMsg(pParse, "virtual tables cannot use computed columns");
+    goto generated_done;
+  }
+  if( pCol->pDflt ) goto generated_error;
+  if( pType ){
+    if( pType->n==7 && sqlite3StrNICmp("virtual",pType->z,7)==0 ){
+      /* no-op */
+    }else if( pType->n==6 && sqlite3StrNICmp("stored",pType->z,6)==0 ){
+      eType = COLFLAG_STORED;
+    }else{
+      goto generated_error;
+    }
   }
+  if( eType==COLFLAG_VIRTUAL ) pTab->nNVCol--;
+  pCol->colFlags |= eType;
+  assert( TF_HasVirtual==COLFLAG_VIRTUAL );
+  assert( TF_HasStored==COLFLAG_STORED );
+  pTab->tabFlags |= eType;
+  if( pCol->colFlags & COLFLAG_PRIMKEY ){
+    makeColumnPartOfPrimaryKey(pParse, pCol); /* For the error message */
+  }
+  pCol->pDflt = pExpr;
+  pExpr = 0;
+  goto generated_done;
 
-  return pColl;
+generated_error:
+  sqlite3ErrorMsg(pParse, "error in generated column \"%s\"",
+                  pCol->zName);
+generated_done:
+  sqlite3ExprDelete(pParse->db, pExpr);
+#else
+  /* Throw and error for the GENERATED ALWAYS AS clause if the
+  ** SQLITE_OMIT_GENERATED_COLUMNS compile-time option is used. */
+  sqlite3ErrorMsg(pParse, "generated columns not supported");
+  sqlite3ExprDelete(pParse->db, pExpr);
+#endif
 }
 
-
 /*
 ** Generate code that will increment the schema cookie.
 **
@@ -113947,15 +117125,24 @@ static int isDupColumn(Index *pIdx, int nKey, Index *pPk, int iCol){
 ** high-order bit of colNotIdxed is always 1.  All unindexed columns
 ** of the table have a 1.
 **
+** 2019-10-24:  For the purpose of this computation, virtual columns are
+** not considered to be covered by the index, even if they are in the
+** index, because we do not trust the logic in whereIndexExprTrans() to be
+** able to find all instances of a reference to the indexed table column
+** and convert them into references to the index.  Hence we always want
+** the actual table at hand in order to recompute the virtual column, if
+** necessary.
+**
 ** The colNotIdxed mask is AND-ed with the SrcList.a[].colUsed mask
 ** to determine if the index is covering index.
 */
 static void recomputeColumnsNotIndexed(Index *pIdx){
   Bitmask m = 0;
   int j;
+  Table *pTab = pIdx->pTable;
   for(j=pIdx->nColumn-1; j>=0; j--){
     int x = pIdx->aiColumn[j];
-    if( x>=0 ){
+    if( x>=0 && (pTab->aCol[x].colFlags & COLFLAG_VIRTUAL)==0 ){
       testcase( x==BMS-1 );
       testcase( x==BMS-2 );
       if( x<BMS-1 ) m |= MASKBIT(x);
@@ -113975,9 +117162,9 @@ static void recomputeColumnsNotIndexed(Index *pIdx){
 **     (1)  Set all columns of the PRIMARY KEY schema object to be NOT NULL.
 **     (2)  Convert P3 parameter of the OP_CreateBtree from BTREE_INTKEY
 **          into BTREE_BLOBKEY.
-**     (3)  Bypass the creation of the sqlite_master table entry
+**     (3)  Bypass the creation of the sqlite_schema table entry
 **          for the PRIMARY KEY as the primary key index is now
-**          identified by the sqlite_master table entry of the table itself.
+**          identified by the sqlite_schema table entry of the table itself.
 **     (4)  Set the Index.tnum of the PRIMARY KEY Index object in the
 **          schema to the rootpage from the main table.
 **     (5)  Add all table columns to the PRIMARY KEY Index object
@@ -114006,6 +117193,7 @@ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){
         pTab->aCol[i].notNull = OE_Abort;
       }
     }
+    pTab->tabFlags |= TF_HasNotNull;
   }
 
   /* Convert the P3 operand of the OP_CreateBtree opcode from BTREE_INTKEY
@@ -114063,13 +117251,13 @@ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){
   if( !db->init.imposterTable ) pPk->uniqNotNull = 1;
   nPk = pPk->nColumn = pPk->nKeyCol;
 
-  /* Bypass the creation of the PRIMARY KEY btree and the sqlite_master
+  /* Bypass the creation of the PRIMARY KEY btree and the sqlite_schema
   ** table entry. This is only required if currently generating VDBE
   ** code for a CREATE TABLE (not when parsing one as part of reading
   ** a database schema).  */
   if( v && pPk->tnum>0 ){
     assert( db->init.busy==0 );
-    sqlite3VdbeChangeOpcode(v, pPk->tnum, OP_Goto);
+    sqlite3VdbeChangeOpcode(v, (int)pPk->tnum, OP_Goto);
   }
 
   /* The root page of the PRIMARY KEY is the table root page */
@@ -114113,11 +117301,14 @@ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){
   */
   nExtra = 0;
   for(i=0; i<pTab->nCol; i++){
-    if( !hasColumn(pPk->aiColumn, nPk, i) ) nExtra++;
+    if( !hasColumn(pPk->aiColumn, nPk, i)
+     && (pTab->aCol[i].colFlags & COLFLAG_VIRTUAL)==0 ) nExtra++;
   }
   if( resizeIndexObject(db, pPk, nPk+nExtra) ) return;
   for(i=0, j=nPk; i<pTab->nCol; i++){
-    if( !hasColumn(pPk->aiColumn, j, i) ){
+    if( !hasColumn(pPk->aiColumn, j, i)
+     && (pTab->aCol[i].colFlags & COLFLAG_VIRTUAL)==0
+    ){
       assert( j<pPk->nColumn );
       pPk->aiColumn[j] = i;
       pPk->azColl[j] = sqlite3StrBINARY;
@@ -114125,10 +117316,32 @@ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){
     }
   }
   assert( pPk->nColumn==j );
-  assert( pTab->nCol<=j );
+  assert( pTab->nNVCol<=j );
   recomputeColumnsNotIndexed(pPk);
 }
 
+
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+/*
+** Return true if pTab is a virtual table and zName is a shadow table name
+** for that virtual table.
+*/
+SQLITE_PRIVATE int sqlite3IsShadowTableOf(sqlite3 *db, Table *pTab, const char *zName){
+  int nName;                    /* Length of zName */
+  Module *pMod;                 /* Module for the virtual table */
+
+  if( !IsVirtual(pTab) ) return 0;
+  nName = sqlite3Strlen30(pTab->zName);
+  if( sqlite3_strnicmp(zName, pTab->zName, nName)!=0 ) return 0;
+  if( zName[nName]!='_' ) return 0;
+  pMod = (Module*)sqlite3HashFind(&db->aModule, pTab->azModuleArg[0]);
+  if( pMod==0 ) return 0;
+  if( pMod->pModule->iVersion<3 ) return 0;
+  if( pMod->pModule->xShadowName==0 ) return 0;
+  return pMod->pModule->xShadowName(zName+nName+1);
+}
+#endif /* ifndef SQLITE_OMIT_VIRTUALTABLE */
+
 #ifndef SQLITE_OMIT_VIRTUALTABLE
 /*
 ** Return true if zName is a shadow table name in the current database
@@ -114137,11 +117350,9 @@ static void convertToWithoutRowidTable(Parse *pParse, Table *pTab){
 ** zName is temporarily modified while this routine is running, but is
 ** restored to its original value prior to this routine returning.
 */
-static int isShadowTableName(sqlite3 *db, char *zName){
+SQLITE_PRIVATE int sqlite3ShadowTableName(sqlite3 *db, const char *zName){
   char *zTail;                  /* Pointer to the last "_" in zName */
   Table *pTab;                  /* Table that zName is a shadow of */
-  Module *pMod;                 /* Module for the virtual table */
-
   zTail = strrchr(zName, '_');
   if( zTail==0 ) return 0;
   *zTail = 0;
@@ -114149,16 +117360,37 @@ static int isShadowTableName(sqlite3 *db, char *zName){
   *zTail = '_';
   if( pTab==0 ) return 0;
   if( !IsVirtual(pTab) ) return 0;
-  pMod = (Module*)sqlite3HashFind(&db->aModule, pTab->azModuleArg[0]);
-  if( pMod==0 ) return 0;
-  if( pMod->pModule->iVersion<3 ) return 0;
-  if( pMod->pModule->xShadowName==0 ) return 0;
-  return pMod->pModule->xShadowName(zTail+1);
+  return sqlite3IsShadowTableOf(db, pTab, zName);
 }
-#else
-# define isShadowTableName(x,y) 0
 #endif /* ifndef SQLITE_OMIT_VIRTUALTABLE */
 
+
+#ifdef SQLITE_DEBUG
+/*
+** Mark all nodes of an expression as EP_Immutable, indicating that
+** they should not be changed.  Expressions attached to a table or
+** index definition are tagged this way to help ensure that we do
+** not pass them into code generator routines by mistake.
+*/
+static int markImmutableExprStep(Walker *pWalker, Expr *pExpr){
+  ExprSetVVAProperty(pExpr, EP_Immutable);
+  return WRC_Continue;
+}
+static void markExprListImmutable(ExprList *pList){
+  if( pList ){
+    Walker w;
+    memset(&w, 0, sizeof(w));
+    w.xExprCallback = markImmutableExprStep;
+    w.xSelectCallback = sqlite3SelectWalkNoop;
+    w.xSelectCallback2 = 0;
+    sqlite3WalkExprList(&w, pList);
+  }
+}
+#else
+#define markExprListImmutable(X)  /* no-op */
+#endif /* SQLITE_DEBUG */
+
+
 /*
 ** This routine is called to report the final ")" that terminates
 ** a CREATE TABLE statement.
@@ -114167,12 +117399,12 @@ static int isShadowTableName(sqlite3 *db, char *zName){
 ** is added to the internal hash tables, assuming no errors have
 ** occurred.
 **
-** An entry for the table is made in the master table on disk, unless
+** An entry for the table is made in the schema table on disk, unless
 ** this is a temporary table or db->init.busy==1.  When db->init.busy==1
-** it means we are reading the sqlite_master table because we just
-** connected to the database or because the sqlite_master table has
+** it means we are reading the sqlite_schema table because we just
+** connected to the database or because the sqlite_schema table has
 ** recently changed, so the entry for this table already exists in
-** the sqlite_master table.  We do not want to create it again.
+** the sqlite_schema table.  We do not want to create it again.
 **
 ** If the pSelect argument is not NULL, it means that this routine
 ** was called to create a table generated from a
@@ -114198,17 +117430,17 @@ SQLITE_PRIVATE void sqlite3EndTable(
   p = pParse->pNewTable;
   if( p==0 ) return;
 
-  if( pSelect==0 && isShadowTableName(db, p->zName) ){
+  if( pSelect==0 && sqlite3ShadowTableName(db, p->zName) ){
     p->tabFlags |= TF_Shadow;
   }
 
   /* If the db->init.busy is 1 it means we are reading the SQL off the
-  ** "sqlite_master" or "sqlite_temp_master" table on the disk.
+  ** "sqlite_schema" or "sqlite_temp_schema" table on the disk.
   ** So do not write to the disk again.  Extract the root page number
   ** for the table from the db->init.newTnum field.  (The page number
   ** should have been put there by the sqliteOpenCb routine.)
   **
-  ** If the root page number is 1, that means this is the sqlite_master
+  ** If the root page number is 1, that means this is the sqlite_schema
   ** table itself.  So mark it read-only.
   */
   if( db->init.busy ){
@@ -114234,12 +117466,11 @@ SQLITE_PRIVATE void sqlite3EndTable(
     }
     if( (p->tabFlags & TF_HasPrimaryKey)==0 ){
       sqlite3ErrorMsg(pParse, "PRIMARY KEY missing on table %s", p->zName);
-    }else{
-      p->tabFlags |= TF_WithoutRowid | TF_NoVisibleRowid;
-      convertToWithoutRowidTable(pParse, p);
+      return;
     }
+    p->tabFlags |= TF_WithoutRowid | TF_NoVisibleRowid;
+    convertToWithoutRowidTable(pParse, p);
   }
-
   iDb = sqlite3SchemaToIndex(db, p->pSchema);
 
 #ifndef SQLITE_OMIT_CHECK
@@ -114247,8 +117478,47 @@ SQLITE_PRIVATE void sqlite3EndTable(
   */
   if( p->pCheck ){
     sqlite3ResolveSelfReference(pParse, p, NC_IsCheck, 0, p->pCheck);
+    if( pParse->nErr ){
+      /* If errors are seen, delete the CHECK constraints now, else they might
+      ** actually be used if PRAGMA writable_schema=ON is set. */
+      sqlite3ExprListDelete(db, p->pCheck);
+      p->pCheck = 0;
+    }else{
+      markExprListImmutable(p->pCheck);
+    }
   }
 #endif /* !defined(SQLITE_OMIT_CHECK) */
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+  if( p->tabFlags & TF_HasGenerated ){
+    int ii, nNG = 0;
+    testcase( p->tabFlags & TF_HasVirtual );
+    testcase( p->tabFlags & TF_HasStored );
+    for(ii=0; ii<p->nCol; ii++){
+      u32 colFlags = p->aCol[ii].colFlags;
+      if( (colFlags & COLFLAG_GENERATED)!=0 ){
+        Expr *pX = p->aCol[ii].pDflt;
+        testcase( colFlags & COLFLAG_VIRTUAL );
+        testcase( colFlags & COLFLAG_STORED );
+        if( sqlite3ResolveSelfReference(pParse, p, NC_GenCol, pX, 0) ){
+          /* If there are errors in resolving the expression, change the
+          ** expression to a NULL.  This prevents code generators that operate
+          ** on the expression from inserting extra parts into the expression
+          ** tree that have been allocated from lookaside memory, which is
+          ** illegal in a schema and will lead to errors or heap corruption
+          ** when the database connection closes. */
+          sqlite3ExprDelete(db, pX);
+          p->aCol[ii].pDflt = sqlite3ExprAlloc(db, TK_NULL, 0, 0);
+        }
+      }else{
+        nNG++;
+      }
+    }
+    if( nNG==0 ){
+      sqlite3ErrorMsg(pParse, "must have at least one non-generated column");
+      return;
+    }
+  }
+#endif
 
   /* Estimate the average row size for the table and for all implied indices */
   estimateTableWidth(p);
@@ -114257,7 +117527,7 @@ SQLITE_PRIVATE void sqlite3EndTable(
   }
 
   /* If not initializing, then create a record for the new table
-  ** in the SQLITE_MASTER table of the database.
+  ** in the schema table of the database.
   **
   ** If this is a TEMPORARY table, write the entry into the auxiliary
   ** file instead of into the main database file.
@@ -114325,7 +117595,7 @@ SQLITE_PRIVATE void sqlite3EndTable(
       pSelTab = sqlite3ResultSetOfSelect(pParse, pSelect, SQLITE_AFF_BLOB);
       if( pSelTab==0 ) return;
       assert( p->aCol==0 );
-      p->nCol = pSelTab->nCol;
+      p->nCol = p->nNVCol = pSelTab->nCol;
       p->aCol = pSelTab->aCol;
       pSelTab->nCol = 0;
       pSelTab->aCol = 0;
@@ -114359,14 +117629,14 @@ SQLITE_PRIVATE void sqlite3EndTable(
     }
 
     /* A slot for the record has already been allocated in the
-    ** SQLITE_MASTER table.  We just need to update that slot with all
+    ** schema table.  We just need to update that slot with all
     ** the information we've collected.
     */
     sqlite3NestedParse(pParse,
-      "UPDATE %Q.%s "
-         "SET type='%s', name=%Q, tbl_name=%Q, rootpage=#%d, sql=%Q "
-       "WHERE rowid=#%d",
-      db->aDb[iDb].zDbSName, MASTER_NAME,
+      "UPDATE %Q." DFLT_SCHEMA_TABLE
+      " SET type='%s', name=%Q, tbl_name=%Q, rootpage=#%d, sql=%Q"
+      " WHERE rowid=#%d",
+      db->aDb[iDb].zDbSName,
       zType,
       p->zName,
       p->zName,
@@ -114386,7 +117656,7 @@ SQLITE_PRIVATE void sqlite3EndTable(
       assert( sqlite3SchemaMutexHeld(db, iDb, 0) );
       if( pDb->pSchema->pSeqTab==0 ){
         sqlite3NestedParse(pParse,
-          "CREATE TABLE %Q.sqlcipher_sequence(name,seq)",
+          "CREATE TABLE %Q.sqlite_sequence(name,seq)",
           pDb->zDbSName
         );
       }
@@ -114398,7 +117668,6 @@ SQLITE_PRIVATE void sqlite3EndTable(
            sqlite3MPrintf(db, "tbl_name='%q' AND type!='trigger'", p->zName));
   }
 
-
   /* Add the table to the in-memory representation of the database.
   */
   if( db->init.busy ){
@@ -114469,6 +117738,7 @@ SQLITE_PRIVATE void sqlite3CreateView(
   ** allocated rather than point to the input string - which means that
   ** they will persist after the current sqlite3_exec() call returns.
   */
+  pSelect->selFlags |= SF_View;
   if( IN_RENAME_OBJECT ){
     p->pSelect = pSelect;
     pSelect = 0;
@@ -114494,7 +117764,7 @@ SQLITE_PRIVATE void sqlite3CreateView(
   sEnd.z = &z[n-1];
   sEnd.n = 1;
 
-  /* Use sqlite3EndTable() to add the view to the SQLITE_MASTER table */
+  /* Use sqlite3EndTable() to add the view to the schema table */
   sqlite3EndTable(pParse, 0, &sEnd, 0, 0);
 
 create_view_fail:
@@ -114575,14 +117845,12 @@ SQLITE_PRIVATE int sqlite3ViewGetColumnNames(Parse *pParse, Table *pTable){
   assert( pTable->pSelect );
   pSel = sqlite3SelectDup(db, pTable->pSelect, 0);
   if( pSel ){
-#ifndef SQLITE_OMIT_ALTERTABLE
     u8 eParseMode = pParse->eParseMode;
     pParse->eParseMode = PARSE_MODE_NORMAL;
-#endif
     n = pParse->nTab;
     sqlite3SrcListAssignCursors(pParse, pSel->pSrc);
     pTable->nCol = -1;
-    db->lookaside.bDisable++;
+    DisableLookaside;
 #ifndef SQLITE_OMIT_AUTHORIZATION
     xAuth = db->xAuth;
     db->xAuth = 0;
@@ -114592,7 +117860,10 @@ SQLITE_PRIVATE int sqlite3ViewGetColumnNames(Parse *pParse, Table *pTable){
     pSelTab = sqlite3ResultSetOfSelect(pParse, pSel, SQLITE_AFF_NONE);
 #endif
     pParse->nTab = n;
-    if( pTable->pCheck ){
+    if( pSelTab==0 ){
+      pTable->nCol = 0;
+      nErr++;
+    }else if( pTable->pCheck ){
       /* CREATE VIEW name(arglist) AS ...
       ** The names of the columns in the table are taken from
       ** arglist which is stored in pTable->pCheck.  The pCheck field
@@ -114608,7 +117879,7 @@ SQLITE_PRIVATE int sqlite3ViewGetColumnNames(Parse *pParse, Table *pTable){
         sqlite3SelectAddColumnTypeAndCollation(pParse, pTable, pSel,
                                                SQLITE_AFF_NONE);
       }
-    }else if( pSelTab ){
+    }else{
       /* CREATE VIEW name AS...  without an argument list.  Construct
       ** the column names from the SELECT statement that defines the view.
       */
@@ -114618,16 +117889,12 @@ SQLITE_PRIVATE int sqlite3ViewGetColumnNames(Parse *pParse, Table *pTable){
       pSelTab->nCol = 0;
       pSelTab->aCol = 0;
       assert( sqlite3SchemaMutexHeld(db, 0, pTable->pSchema) );
-    }else{
-      pTable->nCol = 0;
-      nErr++;
     }
+    pTable->nNVCol = pTable->nCol;
     sqlite3DeleteTable(db, pSelTab);
     sqlite3SelectDelete(db, pSel);
-    db->lookaside.bDisable--;
-#ifndef SQLITE_OMIT_ALTERTABLE
+    EnableLookaside;
     pParse->eParseMode = eParseMode;
-#endif
   } else {
     nErr++;
   }
@@ -114682,7 +117949,7 @@ static void sqliteViewResetAll(sqlite3 *db, int idx){
 ** in order to be certain that we got the right one.
 */
 #ifndef SQLITE_OMIT_AUTOVACUUM
-SQLITE_PRIVATE void sqlite3RootPageMoved(sqlite3 *db, int iDb, int iFrom, int iTo){
+SQLITE_PRIVATE void sqlite3RootPageMoved(sqlite3 *db, int iDb, Pgno iFrom, Pgno iTo){
   HashElem *pElem;
   Hash *pHash;
   Db *pDb;
@@ -114708,7 +117975,7 @@ SQLITE_PRIVATE void sqlite3RootPageMoved(sqlite3 *db, int iDb, int iFrom, int iT
 
 /*
 ** Write code to erase the table with root-page iTable from database iDb.
-** Also write code to modify the sqlite_master table and internal schema
+** Also write code to modify the sqlite_schema table and internal schema
 ** if a root-page of another table is moved by the btree-layer whilst
 ** erasing iTable (this can happen with an auto-vacuum database).
 */
@@ -114721,7 +117988,7 @@ static void destroyRootPage(Parse *pParse, int iTable, int iDb){
 #ifndef SQLITE_OMIT_AUTOVACUUM
   /* OP_Destroy stores an in integer r1. If this integer
   ** is non-zero, then it is the root page number of a table moved to
-  ** location iTable. The following code modifies the sqlite_master table to
+  ** location iTable. The following code modifies the sqlite_schema table to
   ** reflect this.
   **
   ** The "#NNN" in the SQL is a special constant that means whatever value
@@ -114729,15 +117996,16 @@ static void destroyRootPage(Parse *pParse, int iTable, int iDb){
   ** token for additional information.
   */
   sqlite3NestedParse(pParse,
-     "UPDATE %Q.%s SET rootpage=%d WHERE #%d AND rootpage=#%d",
-     pParse->db->aDb[iDb].zDbSName, MASTER_NAME, iTable, r1, r1);
+     "UPDATE %Q." DFLT_SCHEMA_TABLE
+     " SET rootpage=%d WHERE #%d AND rootpage=#%d",
+     pParse->db->aDb[iDb].zDbSName, iTable, r1, r1);
 #endif
   sqlite3ReleaseTempReg(pParse, r1);
 }
 
 /*
 ** Write VDBE code to erase table pTab and all associated indices on disk.
-** Code to update the sqlite_master tables and internal schema definitions
+** Code to update the sqlite_schema tables and internal schema definitions
 ** in case a root-page belonging to another table is moved by the btree layer
 ** is also added (this can happen with an auto-vacuum database).
 */
@@ -114758,18 +118026,18 @@ static void destroyTable(Parse *pParse, Table *pTab){
   ** "OP_Destroy 4 0" opcode. The subsequent "OP_Destroy 5 0" would hit
   ** a free-list page.
   */
-  int iTab = pTab->tnum;
-  int iDestroyed = 0;
+  Pgno iTab = pTab->tnum;
+  Pgno iDestroyed = 0;
 
   while( 1 ){
     Index *pIdx;
-    int iLargest = 0;
+    Pgno iLargest = 0;
 
     if( iDestroyed==0 || iTab<iDestroyed ){
       iLargest = iTab;
     }
     for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
-      int iIdx = pIdx->tnum;
+      Pgno iIdx = pIdx->tnum;
       assert( pIdx->pSchema==pTab->pSchema );
       if( (iDestroyed==0 || (iIdx<iDestroyed)) && iIdx>iLargest ){
         iLargest = iIdx;
@@ -114800,7 +118068,7 @@ static void sqlite3ClearStatTables(
   const char *zDbName = pParse->db->aDb[iDb].zDbSName;
   for(i=1; i<=4; i++){
     char zTab[24];
-    sqlite3_snprintf(sizeof(zTab),zTab,"sqlcipher_stat%d",i);
+    sqlite3_snprintf(sizeof(zTab),zTab,"sqlite_stat%d",i);
     if( sqlite3FindTable(pParse->db, zTab, zDbName) ){
       sqlite3NestedParse(pParse,
         "DELETE FROM %Q.%s WHERE %s=%Q",
@@ -114830,8 +118098,8 @@ SQLITE_PRIVATE void sqlite3CodeDropTable(Parse *pParse, Table *pTab, int iDb, in
 #endif
 
   /* Drop all triggers associated with the table being dropped. Code
-  ** is generated to remove entries from sqlite_master and/or
-  ** sqlite_temp_master if required.
+  ** is generated to remove entries from sqlite_schema and/or
+  ** sqlite_temp_schema if required.
   */
   pTrigger = sqlite3TriggerList(pParse, pTab);
   while( pTrigger ){
@@ -114849,22 +118117,23 @@ SQLITE_PRIVATE void sqlite3CodeDropTable(Parse *pParse, Table *pTab, int iDb, in
   */
   if( pTab->tabFlags & TF_Autoincrement ){
     sqlite3NestedParse(pParse,
-      "DELETE FROM %Q.sqlcipher_sequence WHERE name=%Q",
+      "DELETE FROM %Q.sqlite_sequence WHERE name=%Q",
       pDb->zDbSName, pTab->zName
     );
   }
 #endif
 
-  /* Drop all SQLITE_MASTER table and index entries that refer to the
-  ** table. The program name loops through the master table and deletes
+  /* Drop all entries in the schema table that refer to the
+  ** table. The program name loops through the schema table and deletes
   ** every row that refers to a table of the same name as the one being
   ** dropped. Triggers are handled separately because a trigger can be
   ** created in the temp database that refers to a table in another
   ** database.
   */
   sqlite3NestedParse(pParse,
-      "DELETE FROM %Q.%s WHERE tbl_name=%Q and type!='trigger'",
-      pDb->zDbSName, MASTER_NAME, pTab->zName);
+      "DELETE FROM %Q." DFLT_SCHEMA_TABLE
+      " WHERE tbl_name=%Q and type!='trigger'",
+      pDb->zDbSName, pTab->zName);
   if( !isView && !IsVirtual(pTab) ){
     destroyTable(pParse, pTab);
   }
@@ -114882,6 +118151,37 @@ SQLITE_PRIVATE void sqlite3CodeDropTable(Parse *pParse, Table *pTab, int iDb, in
 }
 
 /*
+** Return TRUE if shadow tables should be read-only in the current
+** context.
+*/
+SQLITE_PRIVATE int sqlite3ReadOnlyShadowTables(sqlite3 *db){
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+  if( (db->flags & SQLITE_Defensive)!=0
+   && db->pVtabCtx==0
+   && db->nVdbeExec==0
+  ){
+    return 1;
+  }
+#endif
+  return 0;
+}
+
+/*
+** Return true if it is not allowed to drop the given table
+*/
+static int tableMayNotBeDropped(sqlite3 *db, Table *pTab){
+  if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0 ){
+    if( sqlite3StrNICmp(pTab->zName+7, "stat", 4)==0 ) return 0;
+    if( sqlite3StrNICmp(pTab->zName+7, "parameters", 10)==0 ) return 0;
+    return 1;
+  }
+  if( (pTab->tabFlags & TF_Shadow)!=0 && sqlite3ReadOnlyShadowTables(db) ){
+    return 1;
+  }
+  return 0;
+}
+
+/*
 ** This routine is called to do the work of a DROP TABLE statement.
 ** pName is the name of the table to be dropped.
 */
@@ -114950,9 +118250,7 @@ SQLITE_PRIVATE void sqlite3DropTable(Parse *pParse, SrcList *pName, int isView,
     }
   }
 #endif
-  if( sqlite3StrNICmp(pTab->zName, "sqlite_", 7)==0
-    && sqlite3StrNICmp(pTab->zName+7, "stat", 4)!=0
-    && sqlite3StrNICmp(pTab->zName+7, "parameters", 10)!=0 ){
+  if( tableMayNotBeDropped(db, pTab) ){
     sqlite3ErrorMsg(pParse, "table %s may not be dropped", pTab->zName);
     goto exit_drop_table;
   }
@@ -114971,7 +118269,7 @@ SQLITE_PRIVATE void sqlite3DropTable(Parse *pParse, SrcList *pName, int isView,
   }
 #endif
 
-  /* Generate code to remove the table from the master table
+  /* Generate code to remove the table from the schema table
   ** on disk.
   */
   v = sqlite3GetVdbe(pParse);
@@ -115044,7 +118342,7 @@ SQLITE_PRIVATE void sqlite3CreateForeignKey(
   nByte = sizeof(*pFKey) + (nCol-1)*sizeof(pFKey->aCol[0]) + pTo->n + 1;
   if( pToCol ){
     for(i=0; i<pToCol->nExpr; i++){
-      nByte += sqlite3Strlen30(pToCol->a[i].zName) + 1;
+      nByte += sqlite3Strlen30(pToCol->a[i].zEName) + 1;
     }
   }
   pFKey = sqlite3DbMallocZero(db, nByte );
@@ -115069,7 +118367,7 @@ SQLITE_PRIVATE void sqlite3CreateForeignKey(
     for(i=0; i<nCol; i++){
       int j;
       for(j=0; j<p->nCol; j++){
-        if( sqlite3StrICmp(p->aCol[j].zName, pFromCol->a[i].zName)==0 ){
+        if( sqlite3StrICmp(p->aCol[j].zName, pFromCol->a[i].zEName)==0 ){
           pFKey->aCol[i].iFrom = j;
           break;
         }
@@ -115077,22 +118375,22 @@ SQLITE_PRIVATE void sqlite3CreateForeignKey(
       if( j>=p->nCol ){
         sqlite3ErrorMsg(pParse,
           "unknown column \"%s\" in foreign key definition",
-          pFromCol->a[i].zName);
+          pFromCol->a[i].zEName);
         goto fk_end;
       }
       if( IN_RENAME_OBJECT ){
-        sqlite3RenameTokenRemap(pParse, &pFKey->aCol[i], pFromCol->a[i].zName);
+        sqlite3RenameTokenRemap(pParse, &pFKey->aCol[i], pFromCol->a[i].zEName);
       }
     }
   }
   if( pToCol ){
     for(i=0; i<nCol; i++){
-      int n = sqlite3Strlen30(pToCol->a[i].zName);
+      int n = sqlite3Strlen30(pToCol->a[i].zEName);
       pFKey->aCol[i].zCol = z;
       if( IN_RENAME_OBJECT ){
-        sqlite3RenameTokenRemap(pParse, z, pToCol->a[i].zName);
+        sqlite3RenameTokenRemap(pParse, z, pToCol->a[i].zEName);
       }
-      memcpy(z, pToCol->a[i].zName, n);
+      memcpy(z, pToCol->a[i].zEName, n);
       z[n] = 0;
       z += n+1;
     }
@@ -115162,7 +118460,7 @@ static void sqlite3RefillIndex(Parse *pParse, Index *pIndex, int memRootPage){
   int iSorter;                   /* Cursor opened by OpenSorter (if in use) */
   int addr1;                     /* Address of top of loop */
   int addr2;                     /* Address to jump to for next iteration */
-  int tnum;                      /* Root page of index */
+  Pgno tnum;                     /* Root page of index */
   int iPartIdxLabel;             /* Jump to this label to skip a row */
   Vdbe *v;                       /* Generate code into this virtual machine */
   KeyInfo *pKey;                 /* KeyInfo for index */
@@ -115183,7 +118481,7 @@ static void sqlite3RefillIndex(Parse *pParse, Index *pIndex, int memRootPage){
   v = sqlite3GetVdbe(pParse);
   if( v==0 ) return;
   if( memRootPage>=0 ){
-    tnum = memRootPage;
+    tnum = (Pgno)memRootPage;
   }else{
     tnum = pIndex->tnum;
   }
@@ -115208,7 +118506,7 @@ static void sqlite3RefillIndex(Parse *pParse, Index *pIndex, int memRootPage){
   sqlite3VdbeAddOp2(v, OP_Next, iTab, addr1+1); VdbeCoverage(v);
   sqlite3VdbeJumpHere(v, addr1);
   if( memRootPage<0 ) sqlite3VdbeAddOp2(v, OP_Clear, tnum, iDb);
-  sqlite3VdbeAddOp4(v, OP_OpenWrite, iIdx, tnum, iDb,
+  sqlite3VdbeAddOp4(v, OP_OpenWrite, iIdx, (int)tnum, iDb,
                     (char *)pKey, P4_KEYINFO);
   sqlite3VdbeChangeP5(v, OPFLAG_BULKCSR|((memRootPage>=0)?OPFLAG_P2ISREG:0));
 
@@ -115425,10 +118723,7 @@ SQLITE_PRIVATE void sqlite3CreateIndex(
 #if SQLITE_USER_AUTHENTICATION
        && sqlite3UserAuthTable(pTab->zName)==0
 #endif
-#ifdef SQLITE_ALLOW_SQLITE_MASTER_INDEX
-       && sqlite3StrICmp(&pTab->zName[7],"master")!=0
-#endif
- ){
+  ){
     sqlite3ErrorMsg(pParse, "table %s may not be indexed", pTab->zName);
     goto exit_create_index;
   }
@@ -115450,7 +118745,7 @@ SQLITE_PRIVATE void sqlite3CreateIndex(
   ** index or table with the same name.
   **
   ** Exception:  If we are reading the names of permanent indices from the
-  ** sqlite_master table (because some other process changed the schema) and
+  ** sqlite_schema table (because some other process changed the schema) and
   ** one of the index names collides with the name of a temporary table or
   ** index, then we will continue to process this index.
   **
@@ -115486,7 +118781,7 @@ SQLITE_PRIVATE void sqlite3CreateIndex(
     int n;
     Index *pLoop;
     for(pLoop=pTab->pIndex, n=1; pLoop; pLoop=pLoop->pNext, n++){}
-    zName = sqlite3MPrintf(db, "sqlcipher_autoindex_%s_%d", pTab->zName, n);
+    zName = sqlite3MPrintf(db, "sqlite_autoindex_%s_%d", pTab->zName, n);
     if( zName==0 ){
       goto exit_create_index;
     }
@@ -115623,8 +118918,13 @@ SQLITE_PRIVATE void sqlite3CreateIndex(
       assert( j<=0x7fff );
       if( j<0 ){
         j = pTab->iPKey;
-      }else if( pTab->aCol[j].notNull==0 ){
-        pIndex->uniqNotNull = 0;
+      }else{
+        if( pTab->aCol[j].notNull==0 ){
+          pIndex->uniqNotNull = 0;
+        }
+        if( pTab->aCol[j].colFlags & COLFLAG_VIRTUAL ){
+          pIndex->bHasVCol = 1;
+        }
       }
       pIndex->aiColumn[i] = (i16)j;
     }
@@ -115679,13 +118979,13 @@ SQLITE_PRIVATE void sqlite3CreateIndex(
   /* If this index contains every column of its table, then mark
   ** it as a covering index */
   assert( HasRowid(pTab)
-      || pTab->iPKey<0 || sqlite3ColumnOfIndex(pIndex, pTab->iPKey)>=0 );
+      || pTab->iPKey<0 || sqlite3TableColumnToIndex(pIndex, pTab->iPKey)>=0 );
   recomputeColumnsNotIndexed(pIndex);
   if( pTblName!=0 && pIndex->nColumn>=pTab->nCol ){
     pIndex->isCovering = 1;
     for(j=0; j<pTab->nCol; j++){
       if( j==pTab->iPKey ) continue;
-      if( sqlite3ColumnOfIndex(pIndex,j)>=0 ) continue;
+      if( sqlite3TableColumnToIndex(pIndex,j)>=0 ) continue;
       pIndex->isCovering = 0;
       break;
     }
@@ -115789,8 +119089,8 @@ SQLITE_PRIVATE void sqlite3CreateIndex(
     /* If this is the initial CREATE INDEX statement (or CREATE TABLE if the
     ** index is an implied index for a UNIQUE or PRIMARY KEY constraint) then
     ** emit code to allocate the index rootpage on disk and make an entry for
-    ** the index in the sqlite_master table and populate the index with
-    ** content.  But, do not do this if we are simply reading the sqlite_master
+    ** the index in the sqlite_schema table and populate the index with
+    ** content.  But, do not do this if we are simply reading the sqlite_schema
     ** table to parse the schema, or if this index is the PRIMARY KEY index
     ** of a WITHOUT ROWID table.
     **
@@ -115815,7 +119115,7 @@ SQLITE_PRIVATE void sqlite3CreateIndex(
       ** PRIMARY KEY and the table is actually a WITHOUT ROWID table. In
       ** that case the convertToWithoutRowidTable() routine will replace
       ** the Noop with a Goto to jump over the VDBE code generated below. */
-      pIndex->tnum = sqlite3VdbeAddOp0(v, OP_Noop);
+      pIndex->tnum = (Pgno)sqlite3VdbeAddOp0(v, OP_Noop);
       sqlite3VdbeAddOp3(v, OP_CreateBtree, iDb, iMem, BTREE_BLOBKEY);
 
       /* Gather the complete text of the CREATE INDEX statement into
@@ -115834,11 +119134,11 @@ SQLITE_PRIVATE void sqlite3CreateIndex(
         zStmt = 0;
       }
 
-      /* Add an entry in sqlite_master for this index
+      /* Add an entry in sqlite_schema for this index
       */
       sqlite3NestedParse(pParse,
-          "INSERT INTO %Q.%s VALUES('index',%Q,%Q,#%d,%Q);",
-          db->aDb[iDb].zDbSName, MASTER_NAME,
+          "INSERT INTO %Q." DFLT_SCHEMA_TABLE " VALUES('index',%Q,%Q,#%d,%Q);",
+          db->aDb[iDb].zDbSName,
           pIndex->zName,
           pTab->zName,
           iMem,
@@ -115857,29 +119157,12 @@ SQLITE_PRIVATE void sqlite3CreateIndex(
         sqlite3VdbeAddOp2(v, OP_Expire, 0, 1);
       }
 
-      sqlite3VdbeJumpHere(v, pIndex->tnum);
+      sqlite3VdbeJumpHere(v, (int)pIndex->tnum);
     }
   }
-
-  /* When adding an index to the list of indices for a table, make
-  ** sure all indices labeled OE_Replace come after all those labeled
-  ** OE_Ignore.  This is necessary for the correct constraint check
-  ** processing (in sqlite3GenerateConstraintChecks()) as part of
-  ** UPDATE and INSERT statements.
-  */
   if( db->init.busy || pTblName==0 ){
-    if( onError!=OE_Replace || pTab->pIndex==0
-         || pTab->pIndex->onError==OE_Replace){
-      pIndex->pNext = pTab->pIndex;
-      pTab->pIndex = pIndex;
-    }else{
-      Index *pOther = pTab->pIndex;
-      while( pOther->pNext && pOther->pNext->onError!=OE_Replace ){
-        pOther = pOther->pNext;
-      }
-      pIndex->pNext = pOther->pNext;
-      pOther->pNext = pIndex;
-    }
+    pIndex->pNext = pTab->pIndex;
+    pTab->pIndex = pIndex;
     pIndex = 0;
   }
   else if( IN_RENAME_OBJECT ){
@@ -115891,6 +119174,21 @@ SQLITE_PRIVATE void sqlite3CreateIndex(
   /* Clean up before exiting */
 exit_create_index:
   if( pIndex ) sqlite3FreeIndex(db, pIndex);
+  if( pTab ){  /* Ensure all REPLACE indexes are at the end of the list */
+    Index **ppFrom = &pTab->pIndex;
+    Index *pThis;
+    for(ppFrom=&pTab->pIndex; (pThis = *ppFrom)!=0; ppFrom=&pThis->pNext){
+      Index *pNext;
+      if( pThis->onError!=OE_Replace ) continue;
+      while( (pNext = pThis->pNext)!=0 && pNext->onError!=OE_Replace ){
+        *ppFrom = pNext;
+        pThis->pNext = pNext->pNext;
+        pNext->pNext = pThis;
+        ppFrom = &pNext->pNext;
+      }
+      break;
+    }
+  }
   sqlite3ExprDelete(db, pPIWhere);
   sqlite3ExprListDelete(db, pList);
   sqlite3SrcListDelete(db, pTblName);
@@ -115916,9 +119214,10 @@ exit_create_index:
 ** are based on typical values found in actual indices.
 */
 SQLITE_PRIVATE void sqlite3DefaultRowEst(Index *pIdx){
-  /*                10,  9,  8,  7,  6 */
-  LogEst aVal[] = { 33, 32, 30, 28, 26 };
+               /*                10,  9,  8,  7,  6 */
+  static const LogEst aVal[] = { 33, 32, 30, 28, 26 };
   LogEst *a = pIdx->aiRowLogEst;
+  LogEst x;
   int nCopy = MIN(ArraySize(aVal), pIdx->nKeyCol);
   int i;
 
@@ -115927,10 +119226,21 @@ SQLITE_PRIVATE void sqlite3DefaultRowEst(Index *pIdx){
 
   /* Set the first entry (number of rows in the index) to the estimated
   ** number of rows in the table, or half the number of rows in the table
-  ** for a partial index.   But do not let the estimate drop below 10. */
-  a[0] = pIdx->pTable->nRowLogEst;
-  if( pIdx->pPartIdxWhere!=0 ) a[0] -= 10;  assert( 10==sqlite3LogEst(2) );
-  if( a[0]<33 ) a[0] = 33;                  assert( 33==sqlite3LogEst(10) );
+  ** for a partial index.
+  **
+  ** 2020-05-27:  If some of the stat data is coming from the sqlite_stat1
+  ** table but other parts we are having to guess at, then do not let the
+  ** estimated number of rows in the table be less than 1000 (LogEst 99).
+  ** Failure to do this can cause the indexes for which we do not have
+  ** stat1 data to be ignored by the query planner.
+  */
+  x = pIdx->pTable->nRowLogEst;
+  assert( 99==sqlite3LogEst(1000) );
+  if( x<99 ){
+    pIdx->pTable->nRowLogEst = x = 99;
+  }
+  if( pIdx->pPartIdxWhere!=0 ) x -= 10;  assert( 10==sqlite3LogEst(2) );
+  a[0] = x;
 
   /* Estimate that a[1] is 10, a[2] is 9, a[3] is 8, a[4] is 7, a[5] is
   ** 6 and each subsequent value (if any) is 5.  */
@@ -115993,13 +119303,13 @@ SQLITE_PRIVATE void sqlite3DropIndex(Parse *pParse, SrcList *pName, int ifExists
   }
 #endif
 
-  /* Generate code to remove the index and from the master table */
+  /* Generate code to remove the index and from the schema table */
   v = sqlite3GetVdbe(pParse);
   if( v ){
     sqlite3BeginWriteOperation(pParse, 1, iDb);
     sqlite3NestedParse(pParse,
-       "DELETE FROM %Q.%s WHERE name=%Q AND type='index'",
-       db->aDb[iDb].zDbSName, MASTER_NAME, pIndex->zName
+       "DELETE FROM %Q." DFLT_SCHEMA_TABLE " WHERE name=%Q AND type='index'",
+       db->aDb[iDb].zDbSName, pIndex->zName
     );
     sqlite3ClearStatTables(pParse, iDb, "idx", pIndex->zName);
     sqlite3ChangeCookie(pParse, iDb);
@@ -116399,6 +119709,26 @@ SQLITE_PRIVATE void sqlite3SrcListIndexedBy(Parse *pParse, SrcList *p, Token *pI
 }
 
 /*
+** Append the contents of SrcList p2 to SrcList p1 and return the resulting
+** SrcList. Or, if an error occurs, return NULL. In all cases, p1 and p2
+** are deleted by this function.
+*/
+SQLITE_PRIVATE SrcList *sqlite3SrcListAppendList(Parse *pParse, SrcList *p1, SrcList *p2){
+  assert( p1 && p1->nSrc==1 );
+  if( p2 ){
+    SrcList *pNew = sqlite3SrcListEnlarge(pParse, p1, p2->nSrc, 1);
+    if( pNew==0 ){
+      sqlite3SrcListDelete(pParse->db, p2);
+    }else{
+      p1 = pNew;
+      memcpy(&p1->a[1], p2->a, p2->nSrc*sizeof(struct SrcList_item));
+      sqlite3DbFree(pParse->db, p2);
+    }
+  }
+  return p1;
+}
+
+/*
 ** Add the list of function arguments to the SrcList entry for a
 ** table-valued-function.
 */
@@ -116533,7 +119863,7 @@ SQLITE_PRIVATE int sqlite3OpenTempDatabase(Parse *pParse){
     }
     db->aDb[1].pBt = pBt;
     assert( db->aDb[1].pSchema );
-    if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, db->nextPagesize, -1, 0) ){
+    if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, db->nextPagesize, 0, 0) ){
       sqlite3OomFault(db);
       return 1;
     }
@@ -116644,7 +119974,7 @@ SQLITE_PRIVATE void sqlite3HaltConstraint(
   u8 p5Errmsg       /* P5_ErrMsg type */
 ){
   Vdbe *v = sqlite3GetVdbe(pParse);
-  assert( (errCode&0xff)==SQLITE_CONSTRAINT );
+  assert( (errCode&0xff)==SQLITE_CONSTRAINT || pParse->nested );
   if( onError==OE_Abort ){
     sqlite3MayAbort(pParse);
   }
@@ -117026,51 +120356,6 @@ static int synthCollSeq(sqlite3 *db, CollSeq *pColl){
 }
 
 /*
-** This function is responsible for invoking the collation factory callback
-** or substituting a collation sequence of a different encoding when the
-** requested collation sequence is not available in the desired encoding.
-**
-** If it is not NULL, then pColl must point to the database native encoding
-** collation sequence with name zName, length nName.
-**
-** The return value is either the collation sequence to be used in database
-** db for collation type name zName, length nName, or NULL, if no collation
-** sequence can be found.  If no collation is found, leave an error message.
-**
-** See also: sqlite3LocateCollSeq(), sqlite3FindCollSeq()
-*/
-SQLITE_PRIVATE CollSeq *sqlite3GetCollSeq(
-  Parse *pParse,        /* Parsing context */
-  u8 enc,               /* The desired encoding for the collating sequence */
-  CollSeq *pColl,       /* Collating sequence with native encoding, or NULL */
-  const char *zName     /* Collating sequence name */
-){
-  CollSeq *p;
-  sqlite3 *db = pParse->db;
-
-  p = pColl;
-  if( !p ){
-    p = sqlite3FindCollSeq(db, enc, zName, 0);
-  }
-  if( !p || !p->xCmp ){
-    /* No collation sequence of this type for this encoding is registered.
-    ** Call the collation factory to see if it can supply us with one.
-    */
-    callCollNeeded(db, enc, zName);
-    p = sqlite3FindCollSeq(db, enc, zName, 0);
-  }
-  if( p && !p->xCmp && synthCollSeq(db, p) ){
-    p = 0;
-  }
-  assert( !p || p->xCmp );
-  if( p==0 ){
-    sqlite3ErrorMsg(pParse, "no such collation sequence: %s", zName);
-    pParse->rc = SQLITE_ERROR_MISSING_COLLSEQ;
-  }
-  return p;
-}
-
-/*
 ** This routine is called on a collation sequence before it is used to
 ** check that it is defined. An undefined collation sequence exists when
 ** a database is loaded that contains references to collation sequences
@@ -117162,20 +120447,112 @@ static CollSeq *findCollSeqEntry(
 ** See also: sqlite3LocateCollSeq(), sqlite3GetCollSeq()
 */
 SQLITE_PRIVATE CollSeq *sqlite3FindCollSeq(
-  sqlite3 *db,
-  u8 enc,
-  const char *zName,
-  int create
+  sqlite3 *db,          /* Database connection to search */
+  u8 enc,               /* Desired text encoding */
+  const char *zName,    /* Name of the collating sequence.  Might be NULL */
+  int create            /* True to create CollSeq if doesn't already exist */
 ){
   CollSeq *pColl;
+  assert( SQLITE_UTF8==1 && SQLITE_UTF16LE==2 && SQLITE_UTF16BE==3 );
+  assert( enc>=SQLITE_UTF8 && enc<=SQLITE_UTF16BE );
   if( zName ){
     pColl = findCollSeqEntry(db, zName, create);
+    if( pColl ) pColl += enc-1;
   }else{
     pColl = db->pDfltColl;
   }
-  assert( SQLITE_UTF8==1 && SQLITE_UTF16LE==2 && SQLITE_UTF16BE==3 );
-  assert( enc>=SQLITE_UTF8 && enc<=SQLITE_UTF16BE );
-  if( pColl ) pColl += enc-1;
+  return pColl;
+}
+
+/*
+** Change the text encoding for a database connection. This means that
+** the pDfltColl must change as well.
+*/
+SQLITE_PRIVATE void sqlite3SetTextEncoding(sqlite3 *db, u8 enc){
+  assert( enc==SQLITE_UTF8 || enc==SQLITE_UTF16LE || enc==SQLITE_UTF16BE );
+  db->enc = enc;
+  /* EVIDENCE-OF: R-08308-17224 The default collating function for all
+  ** strings is BINARY.
+  */
+  db->pDfltColl = sqlite3FindCollSeq(db, enc, sqlite3StrBINARY, 0);
+}
+
+/*
+** This function is responsible for invoking the collation factory callback
+** or substituting a collation sequence of a different encoding when the
+** requested collation sequence is not available in the desired encoding.
+**
+** If it is not NULL, then pColl must point to the database native encoding
+** collation sequence with name zName, length nName.
+**
+** The return value is either the collation sequence to be used in database
+** db for collation type name zName, length nName, or NULL, if no collation
+** sequence can be found.  If no collation is found, leave an error message.
+**
+** See also: sqlite3LocateCollSeq(), sqlite3FindCollSeq()
+*/
+SQLITE_PRIVATE CollSeq *sqlite3GetCollSeq(
+  Parse *pParse,        /* Parsing context */
+  u8 enc,               /* The desired encoding for the collating sequence */
+  CollSeq *pColl,       /* Collating sequence with native encoding, or NULL */
+  const char *zName     /* Collating sequence name */
+){
+  CollSeq *p;
+  sqlite3 *db = pParse->db;
+
+  p = pColl;
+  if( !p ){
+    p = sqlite3FindCollSeq(db, enc, zName, 0);
+  }
+  if( !p || !p->xCmp ){
+    /* No collation sequence of this type for this encoding is registered.
+    ** Call the collation factory to see if it can supply us with one.
+    */
+    callCollNeeded(db, enc, zName);
+    p = sqlite3FindCollSeq(db, enc, zName, 0);
+  }
+  if( p && !p->xCmp && synthCollSeq(db, p) ){
+    p = 0;
+  }
+  assert( !p || p->xCmp );
+  if( p==0 ){
+    sqlite3ErrorMsg(pParse, "no such collation sequence: %s", zName);
+    pParse->rc = SQLITE_ERROR_MISSING_COLLSEQ;
+  }
+  return p;
+}
+
+/*
+** This function returns the collation sequence for database native text
+** encoding identified by the string zName.
+**
+** If the requested collation sequence is not available, or not available
+** in the database native encoding, the collation factory is invoked to
+** request it. If the collation factory does not supply such a sequence,
+** and the sequence is available in another text encoding, then that is
+** returned instead.
+**
+** If no versions of the requested collations sequence are available, or
+** another error occurs, NULL is returned and an error message written into
+** pParse.
+**
+** This routine is a wrapper around sqlite3FindCollSeq().  This routine
+** invokes the collation factory if the named collation cannot be found
+** and generates an error message.
+**
+** See also: sqlite3FindCollSeq(), sqlite3GetCollSeq()
+*/
+SQLITE_PRIVATE CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char *zName){
+  sqlite3 *db = pParse->db;
+  u8 enc = ENC(db);
+  u8 initbusy = db->init.busy;
+  CollSeq *pColl;
+
+  pColl = sqlite3FindCollSeq(db, enc, zName, initbusy);
+  if( !initbusy && (!pColl || !pColl->xCmp) ){
+    pColl = sqlite3GetCollSeq(pParse, enc, pColl, zName);
+  }
+
   return pColl;
 }
 
@@ -117214,12 +120591,13 @@ static int matchQuality(
   u8 enc          /* Desired text encoding */
 ){
   int match;
-
-  /* nArg of -2 is a special case */
-  if( nArg==(-2) ) return (p->xSFunc==0) ? 0 : FUNC_PERFECT_MATCH;
+  assert( p->nArg>=-1 );
 
   /* Wrong number of arguments means "no match" */
-  if( p->nArg!=nArg && p->nArg>=0 ) return 0;
+  if( p->nArg!=nArg ){
+    if( nArg==(-2) ) return (p->xSFunc==0) ? 0 : FUNC_PERFECT_MATCH;
+    if( p->nArg>=0 ) return 0;
+  }
 
   /* Give a better score to a function with a specific number of arguments
   ** than to function that accepts any number of arguments. */
@@ -117482,7 +120860,7 @@ SQLITE_PRIVATE Schema *sqlite3SchemaGet(sqlite3 *db, Btree *pBt){
 SQLITE_PRIVATE Table *sqlite3SrcListLookup(Parse *pParse, SrcList *pSrc){
   struct SrcList_item *pItem = pSrc->a;
   Table *pTab;
-  assert( pItem && pSrc->nSrc==1 );
+  assert( pItem && pSrc->nSrc>=1 );
   pTab = sqlite3LocateTableItem(pParse, 0, pItem);
   sqlite3DeleteTable(pParse->db, pItem->pTab);
   pItem->pTab = pTab;
@@ -117502,7 +120880,7 @@ SQLITE_PRIVATE Table *sqlite3SrcListLookup(Parse *pParse, SrcList *pSrc){
 **   1) It is a virtual table and no implementation of the xUpdate method
 **      has been provided
 **
-**   2) It is a system table (i.e. sqlite_master), this call is not
+**   2) It is a system table (i.e. sqlite_schema), this call is not
 **      part of a nested parse and writable_schema pragma has not
 **      been specified
 **
@@ -117521,11 +120899,7 @@ static int tabIsReadOnly(Parse *pParse, Table *pTab){
     return sqlite3WritableSchema(db)==0 && pParse->nested==0;
   }
   assert( pTab->tabFlags & TF_Shadow );
-  return (db->flags & SQLITE_Defensive)!=0
-#ifndef SQLITE_OMIT_VIRTUALTABLE
-          && db->pVtabCtx==0
-#endif
-          && db->nVdbeExec==0;
+  return sqlite3ReadOnlyShadowTables(db);
 }
 
 /*
@@ -117988,7 +121362,9 @@ SQLITE_PRIVATE void sqlite3DeleteFrom(
                                  iTabCur, aToOpen, &iDataCur, &iIdxCur);
       assert( pPk || IsVirtual(pTab) || iDataCur==iTabCur );
       assert( pPk || IsVirtual(pTab) || iIdxCur==iDataCur+1 );
-      if( eOnePass==ONEPASS_MULTI ) sqlite3VdbeJumpHere(v, iAddrOnce);
+      if( eOnePass==ONEPASS_MULTI ){
+        sqlite3VdbeJumpHereOrPopInst(v, iAddrOnce);
+      }
     }
 
     /* Set up a loop over the rowids/primary-keys that were found in the
@@ -118188,7 +121564,8 @@ SQLITE_PRIVATE void sqlite3GenerateRowDelete(
       testcase( mask!=0xffffffff && iCol==31 );
       testcase( mask!=0xffffffff && iCol==32 );
       if( mask==0xffffffff || (iCol<=31 && (mask & MASKBIT32(iCol))!=0) ){
-        sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, iCol, iOld+iCol+1);
+        int kk = sqlite3TableColumnToStorage(pTab, iCol);
+        sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, iCol, iOld+kk+1);
       }
     }
 
@@ -118234,7 +121611,7 @@ SQLITE_PRIVATE void sqlite3GenerateRowDelete(
     u8 p5 = 0;
     sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur,0,iIdxNoSeek);
     sqlite3VdbeAddOp2(v, OP_Delete, iDataCur, (count?OPFLAG_NCHANGE:0));
-    if( pParse->nested==0 || 0==sqlite3_stricmp(pTab->zName, "sqlcipher_stat1") ){
+    if( pParse->nested==0 || 0==sqlite3_stricmp(pTab->zName, "sqlite_stat1") ){
       sqlite3VdbeAppendP4(v, (char*)pTab, P4_TABLE);
     }
     if( eMode!=ONEPASS_OFF ){
@@ -118310,6 +121687,7 @@ SQLITE_PRIVATE void sqlite3GenerateRowIndexDelete(
         &iPartIdxLabel, pPrior, r1);
     sqlite3VdbeAddOp3(v, OP_IdxDelete, iIdxCur+i, r1,
         pIdx->uniqNotNull ? pIdx->nKeyCol : pIdx->nColumn);
+    sqlite3VdbeChangeP5(v, 1);  /* Cause IdxDelete to error if no entry found */
     sqlite3ResolvePartIdxLabel(pParse, iPartIdxLabel);
     pPrior = pIdx;
   }
@@ -118368,6 +121746,8 @@ SQLITE_PRIVATE int sqlite3GenerateIndexKey(
       sqlite3ExprIfFalseDup(pParse, pIdx->pPartIdxWhere, *piPartIdxLabel,
                             SQLITE_JUMPIFNULL);
       pParse->iSelfTab = 0;
+      pPrior = 0; /* Ticket a9efb42811fa41ee 2019-11-02;
+                  ** pPartIdxWhere may have corrupted regPrior registers */
     }else{
       *piPartIdxLabel = 0;
     }
@@ -118434,7 +121814,9 @@ SQLITE_PRIVATE void sqlite3ResolvePartIdxLabel(Parse *pParse, int iLabel){
 /* #include "sqliteInt.h" */
 /* #include <stdlib.h> */
 /* #include <assert.h> */
+#ifndef SQLITE_OMIT_FLOATING_POINT
 /* #include <math.h> */
+#endif
 /* #include "vdbeInt.h" */
 
 /*
@@ -119269,6 +122651,7 @@ static void likeFunc(
   int nPat;
   sqlite3 *db = sqlite3_context_db_handle(context);
   struct compareInfo *pInfo = sqlite3_user_data(context);
+  struct compareInfo backupInfo;
 
 #ifdef SQLITE_LIKE_DOESNT_MATCH_BLOBS
   if( sqlite3_value_type(argv[0])==SQLITE_BLOB
@@ -119304,6 +122687,12 @@ static void likeFunc(
       return;
     }
     escape = sqlite3Utf8Read(&zEsc);
+    if( escape==pInfo->matchAll || escape==pInfo->matchOne ){
+      memcpy(&backupInfo, pInfo, sizeof(backupInfo));
+      pInfo = &backupInfo;
+      if( escape==pInfo->matchAll ) pInfo->matchAll = 0;
+      if( escape==pInfo->matchOne ) pInfo->matchOne = 0;
+    }
   }else{
     escape = pInfo->matchSet;
   }
@@ -119692,7 +123081,7 @@ static void replaceFunc(
           ** whose index is a power of two: 1, 2, 4, 8, 16, 32, ... */
           u8 *zOld;
           zOld = zOut;
-          zOut = sqlite3_realloc64(zOut, (int)nOut + (nOut - nStr - 1));
+          zOut = sqlite3Realloc(zOut, (int)nOut + (nOut - nStr - 1));
           if( zOut==0 ){
             sqlite3_result_error_nomem(context);
             sqlite3_free(zOld);
@@ -120233,12 +123622,10 @@ SQLITE_PRIVATE void sqlite3RegisterPerConnectionBuiltinFunctions(sqlite3 *db){
   }
 /* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
-#ifndef OMIT_EXPORT
   {
     extern void sqlcipher_exportFunc(sqlite3_context *, int, sqlite3_value **);
     sqlite3CreateFunc(db, "sqlcipher_export", -1, SQLITE_TEXT, 0, sqlcipher_exportFunc, 0, 0, 0, 0, 0);
   }
-#endif
 #ifdef SQLCIPHER_EXT
 #include "sqlcipher_funcs_init.h"
 #endif
@@ -120293,9 +123680,22 @@ SQLITE_PRIVATE int sqlite3IsLikeFunction(sqlite3 *db, Expr *pExpr, int *pIsNocas
   assert( !ExprHasProperty(pExpr, EP_xIsSelect) );
   nExpr = pExpr->x.pList->nExpr;
   pDef = sqlite3FindFunction(db, pExpr->u.zToken, nExpr, SQLITE_UTF8, 0);
+#ifdef SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION
+  if( pDef==0 ) return 0;
+#endif
   if( NEVER(pDef==0) || (pDef->funcFlags & SQLITE_FUNC_LIKE)==0 ){
     return 0;
   }
+
+  /* The memcpy() statement assumes that the wildcard characters are
+  ** the first three statements in the compareInfo structure.  The
+  ** asserts() that follow verify that assumption
+  */
+  memcpy(aWc, pDef->pUserData, 3);
+  assert( (char*)&likeInfoAlt == (char*)&likeInfoAlt.matchAll );
+  assert( &((char*)&likeInfoAlt)[1] == (char*)&likeInfoAlt.matchOne );
+  assert( &((char*)&likeInfoAlt)[2] == (char*)&likeInfoAlt.matchSet );
+
   if( nExpr<3 ){
     aWc[3] = 0;
   }else{
@@ -120304,17 +123704,11 @@ SQLITE_PRIVATE int sqlite3IsLikeFunction(sqlite3 *db, Expr *pExpr, int *pIsNocas
     if( pEscape->op!=TK_STRING ) return 0;
     zEscape = pEscape->u.zToken;
     if( zEscape[0]==0 || zEscape[1]!=0 ) return 0;
+    if( zEscape[0]==aWc[0] ) return 0;
+    if( zEscape[0]==aWc[1] ) return 0;
     aWc[3] = zEscape[0];
   }
 
-  /* The memcpy() statement assumes that the wildcard characters are
-  ** the first three statements in the compareInfo structure.  The
-  ** asserts() that follow verify that assumption
-  */
-  memcpy(aWc, pDef->pUserData, 3);
-  assert( (char*)&likeInfoAlt == (char*)&likeInfoAlt.matchAll );
-  assert( &((char*)&likeInfoAlt)[1] == (char*)&likeInfoAlt.matchOne );
-  assert( &((char*)&likeInfoAlt)[2] == (char*)&likeInfoAlt.matchSet );
   *pIsNocase = (pDef->funcFlags & SQLITE_FUNC_CASE)==0;
   return 1;
 }
@@ -120338,12 +123732,20 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){
   ** For peak efficiency, put the most frequently used function last.
   */
   static FuncDef aBuiltinFunc[] = {
+/***** Functions only available with SQLITE_TESTCTRL_INTERNAL_FUNCTIONS *****/
+    TEST_FUNC(implies_nonnull_row, 2, INLINEFUNC_implies_nonnull_row, 0),
+    TEST_FUNC(expr_compare,        2, INLINEFUNC_expr_compare,        0),
+    TEST_FUNC(expr_implies_expr,   2, INLINEFUNC_expr_implies_expr,   0),
+#ifdef SQLITE_DEBUG
+    TEST_FUNC(affinity,          1, INLINEFUNC_affinity, 0),
+#endif
+/***** Regular functions *****/
 #ifdef SQLITE_SOUNDEX
     FUNCTION(soundex,            1, 0, 0, soundexFunc      ),
 #endif
 #ifndef SQLITE_OMIT_LOAD_EXTENSION
-    VFUNCTION(load_extension,    1, 0, 0, loadExt          ),
-    VFUNCTION(load_extension,    2, 0, 0, loadExt          ),
+    SFUNCTION(load_extension,    1, 0, 0, loadExt          ),
+    SFUNCTION(load_extension,    2, 0, 0, loadExt          ),
 #endif
 #if SQLITE_USER_AUTHENTICATION
     FUNCTION(sqlite_crypt,       2, 0, 0, sqlite3CryptFunc ),
@@ -120352,12 +123754,9 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){
     DFUNCTION(sqlite_compileoption_used,1, 0, 0, compileoptionusedFunc  ),
     DFUNCTION(sqlite_compileoption_get, 1, 0, 0, compileoptiongetFunc  ),
 #endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */
-    FUNCTION2(unlikely,          1, 0, 0, noopFunc,  SQLITE_FUNC_UNLIKELY),
-    FUNCTION2(likelihood,        2, 0, 0, noopFunc,  SQLITE_FUNC_UNLIKELY),
-    FUNCTION2(likely,            1, 0, 0, noopFunc,  SQLITE_FUNC_UNLIKELY),
-#ifdef SQLITE_DEBUG
-    FUNCTION2(affinity,          1, 0, 0, noopFunc,  SQLITE_FUNC_AFFINITY),
-#endif
+    INLINE_FUNC(unlikely,        1, INLINEFUNC_unlikely, SQLITE_FUNC_UNLIKELY),
+    INLINE_FUNC(likelihood,      2, INLINEFUNC_unlikely, SQLITE_FUNC_UNLIKELY),
+    INLINE_FUNC(likely,          1, INLINEFUNC_unlikely, SQLITE_FUNC_UNLIKELY),
 #ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC
     FUNCTION2(sqlite_offset,     1, 0, 0, noopFunc,  SQLITE_FUNC_OFFSET|
                                                      SQLITE_FUNC_TYPEOF),
@@ -120390,7 +123789,7 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){
     FUNCTION(upper,              1, 0, 0, upperFunc        ),
     FUNCTION(lower,              1, 0, 0, lowerFunc        ),
     FUNCTION(hex,                1, 0, 0, hexFunc          ),
-    FUNCTION2(ifnull,            2, 0, 0, noopFunc,  SQLITE_FUNC_COALESCE),
+    INLINE_FUNC(ifnull,          2, INLINEFUNC_coalesce, 0 ),
     VFUNCTION(random,            0, 0, 0, randomFunc       ),
     VFUNCTION(randomblob,        1, 0, 0, randomBlob       ),
     FUNCTION(nullif,             2, 0, 1, nullifFunc       ),
@@ -120430,7 +123829,8 @@ SQLITE_PRIVATE void sqlite3RegisterBuiltinFunctions(void){
 #endif
     FUNCTION(coalesce,           1, 0, 0, 0                ),
     FUNCTION(coalesce,           0, 0, 0, 0                ),
-    FUNCTION2(coalesce,         -1, 0, 0, noopFunc,  SQLITE_FUNC_COALESCE),
+    INLINE_FUNC(coalesce,       -1, INLINEFUNC_coalesce, 0 ),
+    INLINE_FUNC(iif,             3, INLINEFUNC_iif,      0 ),
   };
 #ifndef SQLITE_OMIT_ALTERTABLE
   sqlite3AlterFunctions();
@@ -120809,7 +124209,7 @@ static void fkLookupParent(
     VdbeCoverage(v);
   }
   for(i=0; i<pFKey->nCol; i++){
-    int iReg = aiCol[i] + regData + 1;
+    int iReg = sqlite3TableColumnToStorage(pFKey->pFrom,aiCol[i]) + regData + 1;
     sqlite3VdbeAddOp2(v, OP_IsNull, iReg, iOk); VdbeCoverage(v);
   }
 
@@ -120825,7 +124225,8 @@ static void fkLookupParent(
       ** is no matching parent key. Before using MustBeInt, make a copy of
       ** the value. Otherwise, the value inserted into the child key column
       ** will have INTEGER affinity applied to it, which may not be correct.  */
-      sqlite3VdbeAddOp2(v, OP_SCopy, aiCol[0]+1+regData, regTemp);
+      sqlite3VdbeAddOp2(v, OP_SCopy,
+        sqlite3TableColumnToStorage(pFKey->pFrom,aiCol[0])+1+regData, regTemp);
       iMustBeInt = sqlite3VdbeAddOp2(v, OP_MustBeInt, regTemp, 0);
       VdbeCoverage(v);
 
@@ -120852,7 +124253,9 @@ static void fkLookupParent(
       sqlite3VdbeAddOp3(v, OP_OpenRead, iCur, pIdx->tnum, iDb);
       sqlite3VdbeSetP4KeyInfo(pParse, pIdx);
       for(i=0; i<nCol; i++){
-        sqlite3VdbeAddOp2(v, OP_Copy, aiCol[i]+1+regData, regTemp+i);
+        sqlite3VdbeAddOp2(v, OP_Copy,
+               sqlite3TableColumnToStorage(pFKey->pFrom, aiCol[i])+1+regData,
+               regTemp+i);
       }
 
       /* If the parent table is the same as the child table, and we are about
@@ -120868,8 +124271,11 @@ static void fkLookupParent(
       if( pTab==pFKey->pFrom && nIncr==1 ){
         int iJump = sqlite3VdbeCurrentAddr(v) + nCol + 1;
         for(i=0; i<nCol; i++){
-          int iChild = aiCol[i]+1+regData;
-          int iParent = pIdx->aiColumn[i]+1+regData;
+          int iChild = sqlite3TableColumnToStorage(pFKey->pFrom,aiCol[i])
+                              +1+regData;
+          int iParent = 1+regData;
+          iParent += sqlite3TableColumnToStorage(pIdx->pTable,
+                                                 pIdx->aiColumn[i]);
           assert( pIdx->aiColumn[i]>=0 );
           assert( aiCol[i]!=pTab->iPKey );
           if( pIdx->aiColumn[i]==pTab->iPKey ){
@@ -120937,7 +124343,7 @@ static Expr *exprTableRegister(
   if( pExpr ){
     if( iCol>=0 && iCol!=pTab->iPKey ){
       pCol = &pTab->aCol[iCol];
-      pExpr->iTable = regBase + iCol + 1;
+      pExpr->iTable = regBase + sqlite3TableColumnToStorage(pTab,iCol) + 1;
       pExpr->affExpr = pCol->affinity;
       zColl = pCol->zColl;
       if( zColl==0 ) zColl = db->pDfltColl->zName;
@@ -121112,7 +124518,7 @@ static void fkScanChildren(
   /* Clean up the WHERE clause constructed above. */
   sqlite3ExprDelete(db, pWhere);
   if( iFkIfZero ){
-    sqlite3VdbeJumpHere(v, iFkIfZero);
+    sqlite3VdbeJumpHereOrPopInst(v, iFkIfZero);
   }
 }
 
@@ -121386,7 +124792,9 @@ SQLITE_PRIVATE void sqlite3FkCheck(
         Vdbe *v = sqlite3GetVdbe(pParse);
         int iJump = sqlite3VdbeCurrentAddr(v) + pFKey->nCol + 1;
         for(i=0; i<pFKey->nCol; i++){
-          int iReg = pFKey->aCol[i].iFrom + regOld + 1;
+          int iFromCol, iReg;
+          iFromCol = pFKey->aCol[i].iFrom;
+          iReg = sqlite3TableColumnToStorage(pFKey->pFrom,iFromCol) + regOld+1;
           sqlite3VdbeAddOp2(v, OP_IsNull, iReg, iJump); VdbeCoverage(v);
         }
         sqlite3VdbeAddOp2(v, OP_FkCounter, pFKey->isDeferred, -1);
@@ -121721,7 +125129,15 @@ static Trigger *fkActionTrigger(
             sqlite3ExprAlloc(db, TK_ID, &tNew, 0),
             sqlite3ExprAlloc(db, TK_ID, &tToCol, 0));
         }else if( action==OE_SetDflt ){
-          Expr *pDflt = pFKey->pFrom->aCol[iFromCol].pDflt;
+          Column *pCol = pFKey->pFrom->aCol + iFromCol;
+          Expr *pDflt;
+          if( pCol->colFlags & COLFLAG_GENERATED ){
+            testcase( pCol->colFlags & COLFLAG_VIRTUAL );
+            testcase( pCol->colFlags & COLFLAG_STORED );
+            pDflt = 0;
+          }else{
+            pDflt = pCol->pDflt;
+          }
           if( pDflt ){
             pNew = sqlite3ExprDup(db, pDflt, 0);
           }else{
@@ -121759,7 +125175,7 @@ static Trigger *fkActionTrigger(
     }
 
     /* Disable lookaside memory allocation */
-    db->lookaside.bDisable++;
+    DisableLookaside;
 
     pTrigger = (Trigger *)sqlite3DbMallocZero(db,
         sizeof(Trigger) +         /* struct Trigger */
@@ -121781,7 +125197,7 @@ static Trigger *fkActionTrigger(
     }
 
     /* Re-enable the lookaside buffer, if it was disabled earlier. */
-    db->lookaside.bDisable--;
+    EnableLookaside;
 
     sqlite3ExprDelete(db, pWhere);
     sqlite3ExprDelete(db, pWhen);
@@ -121803,6 +125219,7 @@ static Trigger *fkActionTrigger(
           pStep->op = TK_DELETE;
           break;
         }
+        /* no break */ deliberate_fall_through
       default:
         pStep->op = TK_UPDATE;
     }
@@ -121932,7 +125349,7 @@ SQLITE_PRIVATE void sqlite3OpenTable(
   sqlite3TableLock(pParse, iDb, pTab->tnum,
                    (opcode==OP_OpenWrite)?1:0, pTab->zName);
   if( HasRowid(pTab) ){
-    sqlite3VdbeAddOp4Int(v, opcode, iCur, pTab->tnum, iDb, pTab->nCol);
+    sqlite3VdbeAddOp4Int(v, opcode, iCur, pTab->tnum, iDb, pTab->nNVCol);
     VdbeComment((v, "%s", pTab->zName));
   }else{
     Index *pPk = sqlite3PrimaryKeyIndex(pTab);
@@ -122024,7 +125441,7 @@ SQLITE_PRIVATE const char *sqlite3IndexAffinityStr(sqlite3 *db, Index *pIdx){
 **  'E'            REAL
 */
 SQLITE_PRIVATE void sqlite3TableAffinity(Vdbe *v, Table *pTab, int iReg){
-  int i;
+  int i, j;
   char *zColAff = pTab->zColAff;
   if( zColAff==0 ){
     sqlite3 *db = sqlite3VdbeDb(v);
@@ -122034,13 +125451,15 @@ SQLITE_PRIVATE void sqlite3TableAffinity(Vdbe *v, Table *pTab, int iReg){
       return;
     }
 
-    for(i=0; i<pTab->nCol; i++){
+    for(i=j=0; i<pTab->nCol; i++){
       assert( pTab->aCol[i].affinity!=0 );
-      zColAff[i] = pTab->aCol[i].affinity;
+      if( (pTab->aCol[i].colFlags & COLFLAG_VIRTUAL)==0 ){
+        zColAff[j++] = pTab->aCol[i].affinity;
+      }
     }
     do{
-      zColAff[i--] = 0;
-    }while( i>=0 && zColAff[i]<=SQLITE_AFF_BLOB );
+      zColAff[j--] = 0;
+    }while( j>=0 && zColAff[j]<=SQLITE_AFF_BLOB );
     pTab->zColAff = zColAff;
   }
   assert( zColAff!=0 );
@@ -122073,7 +125492,7 @@ static int readsTable(Parse *p, int iDb, Table *pTab){
     assert( pOp!=0 );
     if( pOp->opcode==OP_OpenRead && pOp->p3==iDb ){
       Index *pIndex;
-      int tnum = pOp->p2;
+      Pgno tnum = pOp->p2;
       if( tnum==pTab->tnum ){
         return 1;
       }
@@ -122094,6 +125513,119 @@ static int readsTable(Parse *p, int iDb, Table *pTab){
   return 0;
 }
 
+/* This walker callback will compute the union of colFlags flags for all
+** referenced columns in a CHECK constraint or generated column expression.
+*/
+static int exprColumnFlagUnion(Walker *pWalker, Expr *pExpr){
+  if( pExpr->op==TK_COLUMN && pExpr->iColumn>=0 ){
+    assert( pExpr->iColumn < pWalker->u.pTab->nCol );
+    pWalker->eCode |= pWalker->u.pTab->aCol[pExpr->iColumn].colFlags;
+  }
+  return WRC_Continue;
+}
+
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+/*
+** All regular columns for table pTab have been puts into registers
+** starting with iRegStore.  The registers that correspond to STORED
+** or VIRTUAL columns have not yet been initialized.  This routine goes
+** back and computes the values for those columns based on the previously
+** computed normal columns.
+*/
+SQLITE_PRIVATE void sqlite3ComputeGeneratedColumns(
+  Parse *pParse,    /* Parsing context */
+  int iRegStore,    /* Register holding the first column */
+  Table *pTab       /* The table */
+){
+  int i;
+  Walker w;
+  Column *pRedo;
+  int eProgress;
+  VdbeOp *pOp;
+
+  assert( pTab->tabFlags & TF_HasGenerated );
+  testcase( pTab->tabFlags & TF_HasVirtual );
+  testcase( pTab->tabFlags & TF_HasStored );
+
+  /* Before computing generated columns, first go through and make sure
+  ** that appropriate affinity has been applied to the regular columns
+  */
+  sqlite3TableAffinity(pParse->pVdbe, pTab, iRegStore);
+  if( (pTab->tabFlags & TF_HasStored)!=0
+   && (pOp = sqlite3VdbeGetOp(pParse->pVdbe,-1))->opcode==OP_Affinity
+  ){
+    /* Change the OP_Affinity argument to '@' (NONE) for all stored
+    ** columns.  '@' is the no-op affinity and those columns have not
+    ** yet been computed. */
+    int ii, jj;
+    char *zP4 = pOp->p4.z;
+    assert( zP4!=0 );
+    assert( pOp->p4type==P4_DYNAMIC );
+    for(ii=jj=0; zP4[jj]; ii++){
+      if( pTab->aCol[ii].colFlags & COLFLAG_VIRTUAL ){
+        continue;
+      }
+      if( pTab->aCol[ii].colFlags & COLFLAG_STORED ){
+        zP4[jj] = SQLITE_AFF_NONE;
+      }
+      jj++;
+    }
+  }
+
+  /* Because there can be multiple generated columns that refer to one another,
+  ** this is a two-pass algorithm.  On the first pass, mark all generated
+  ** columns as "not available".
+  */
+  for(i=0; i<pTab->nCol; i++){
+    if( pTab->aCol[i].colFlags & COLFLAG_GENERATED ){
+      testcase( pTab->aCol[i].colFlags & COLFLAG_VIRTUAL );
+      testcase( pTab->aCol[i].colFlags & COLFLAG_STORED );
+      pTab->aCol[i].colFlags |= COLFLAG_NOTAVAIL;
+    }
+  }
+
+  w.u.pTab = pTab;
+  w.xExprCallback = exprColumnFlagUnion;
+  w.xSelectCallback = 0;
+  w.xSelectCallback2 = 0;
+
+  /* On the second pass, compute the value of each NOT-AVAILABLE column.
+  ** Companion code in the TK_COLUMN case of sqlite3ExprCodeTarget() will
+  ** compute dependencies and mark remove the COLSPAN_NOTAVAIL mark, as
+  ** they are needed.
+  */
+  pParse->iSelfTab = -iRegStore;
+  do{
+    eProgress = 0;
+    pRedo = 0;
+    for(i=0; i<pTab->nCol; i++){
+      Column *pCol = pTab->aCol + i;
+      if( (pCol->colFlags & COLFLAG_NOTAVAIL)!=0 ){
+        int x;
+        pCol->colFlags |= COLFLAG_BUSY;
+        w.eCode = 0;
+        sqlite3WalkExpr(&w, pCol->pDflt);
+        pCol->colFlags &= ~COLFLAG_BUSY;
+        if( w.eCode & COLFLAG_NOTAVAIL ){
+          pRedo = pCol;
+          continue;
+        }
+        eProgress = 1;
+        assert( pCol->colFlags & COLFLAG_GENERATED );
+        x = sqlite3TableColumnToStorage(pTab, i) + iRegStore;
+        sqlite3ExprCodeGeneratedColumn(pParse, pCol, x);
+        pCol->colFlags &= ~COLFLAG_NOTAVAIL;
+      }
+    }
+  }while( pRedo && eProgress );
+  if( pRedo ){
+    sqlite3ErrorMsg(pParse, "generated column loop on \"%s\"", pRedo->zName);
+  }
+  pParse->iSelfTab = 0;
+}
+#endif /* SQLITE_OMIT_GENERATED_COLUMNS */
+
+
 #ifndef SQLITE_OMIT_AUTOINCREMENT
 /*
 ** Locate or create an AutoincInfo structure associated with table pTab
@@ -122401,7 +125933,7 @@ SQLITE_PRIVATE void sqlite3Insert(
   Parse *pParse,        /* Parser context */
   SrcList *pTabList,    /* Name of table into which we are inserting */
   Select *pSelect,      /* A SELECT statement to use as the data source */
-  IdList *pColumn,      /* Column names corresponding to IDLIST. */
+  IdList *pColumn,      /* Column names corresponding to IDLIST, or NULL. */
   int onError,          /* How to handle constraint errors */
   Upsert *pUpsert       /* ON CONFLICT clauses for upsert, or NULL */
 ){
@@ -122426,6 +125958,7 @@ SQLITE_PRIVATE void sqlite3Insert(
   u8 withoutRowid;      /* 0 for normal table.  1 for WITHOUT ROWID table */
   u8 bIdListInOrder;    /* True if IDLIST is in table order */
   ExprList *pList = 0;  /* List of VALUES() to be inserted  */
+  int iRegStore;        /* Register in which to store next column */
 
   /* Register allocations */
   int regFromSelect = 0;/* Base register for data coming from SELECT */
@@ -122533,8 +126066,8 @@ SQLITE_PRIVATE void sqlite3Insert(
   */
   regAutoinc = autoIncBegin(pParse, iDb, pTab);
 
-  /* Allocate registers for holding the rowid of the new row,
-  ** the content of the new row, and the assembled row record.
+  /* Allocate a block registers to hold the rowid and the values
+  ** for all columns of the new row.
   */
   regRowid = regIns = pParse->nMem+1;
   pParse->nMem += pTab->nCol + 1;
@@ -122553,9 +126086,17 @@ SQLITE_PRIVATE void sqlite3Insert(
   ** the index into IDLIST of the primary key column.  ipkColumn is
   ** the index of the primary key as it appears in IDLIST, not as
   ** is appears in the original table.  (The index of the INTEGER
-  ** PRIMARY KEY in the original table is pTab->iPKey.)
+  ** PRIMARY KEY in the original table is pTab->iPKey.)  After this
+  ** loop, if ipkColumn==(-1), that means that integer primary key
+  ** is unspecified, and hence the table is either WITHOUT ROWID or
+  ** it will automatically generated an integer primary key.
+  **
+  ** bIdListInOrder is true if the columns in IDLIST are in storage
+  ** order.  This enables an optimization that avoids shuffling the
+  ** columns into storage order.  False negatives are harmless,
+  ** but false positives will cause database corruption.
   */
-  bIdListInOrder = (pTab->tabFlags & TF_OOOHidden)==0;
+  bIdListInOrder = (pTab->tabFlags & (TF_OOOHidden|TF_HasStored))==0;
   if( pColumn ){
     for(i=0; i<pColumn->nId; i++){
       pColumn->a[i].idx = -1;
@@ -122568,6 +126109,14 @@ SQLITE_PRIVATE void sqlite3Insert(
           if( j==pTab->iPKey ){
             ipkColumn = i;  assert( !withoutRowid );
           }
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+          if( pTab->aCol[j].colFlags & (COLFLAG_STORED|COLFLAG_VIRTUAL) ){
+            sqlite3ErrorMsg(pParse,
+               "cannot INSERT into generated column \"%s\"",
+               pTab->aCol[j].zName);
+            goto insert_cleanup;
+          }
+#endif
           break;
         }
       }
@@ -122677,13 +126226,26 @@ SQLITE_PRIVATE void sqlite3Insert(
   */
   if( pColumn==0 && nColumn>0 ){
     ipkColumn = pTab->iPKey;
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+    if( ipkColumn>=0 && (pTab->tabFlags & TF_HasGenerated)!=0 ){
+      testcase( pTab->tabFlags & TF_HasVirtual );
+      testcase( pTab->tabFlags & TF_HasStored );
+      for(i=ipkColumn-1; i>=0; i--){
+        if( pTab->aCol[i].colFlags & COLFLAG_GENERATED ){
+          testcase( pTab->aCol[i].colFlags & COLFLAG_VIRTUAL );
+          testcase( pTab->aCol[i].colFlags & COLFLAG_STORED );
+          ipkColumn--;
+        }
+      }
+    }
+#endif
   }
 
   /* Make sure the number of columns in the source data matches the number
   ** of columns to be inserted into the table.
   */
   for(i=0; i<pTab->nCol; i++){
-    nHidden += (IsHiddenColumn(&pTab->aCol[i]) ? 1 : 0);
+    if( pTab->aCol[i].colFlags & COLFLAG_NOINSERT ) nHidden++;
   }
   if( pColumn==0 && nColumn && nColumn!=(pTab->nCol-nHidden) ){
     sqlite3ErrorMsg(pParse,
@@ -122729,6 +126291,10 @@ SQLITE_PRIVATE void sqlite3Insert(
               pTab->zName);
       goto insert_cleanup;
     }
+    if( pTab->pSelect ){
+      sqlite3ErrorMsg(pParse, "cannot UPSERT a view");
+      goto insert_cleanup;
+    }
     if( sqlite3HasExplicitNulls(pParse, pUpsert->pUpsertTarget) ){
       goto insert_cleanup;
     }
@@ -122766,10 +126332,91 @@ SQLITE_PRIVATE void sqlite3Insert(
     **         goto C
     **      D: ...
     */
+    sqlite3VdbeReleaseRegisters(pParse, regData, pTab->nCol, 0, 0);
     addrInsTop = addrCont = sqlite3VdbeAddOp1(v, OP_Yield, dest.iSDParm);
     VdbeCoverage(v);
+    if( ipkColumn>=0 ){
+      /* tag-20191021-001: If the INTEGER PRIMARY KEY is being generated by the
+      ** SELECT, go ahead and copy the value into the rowid slot now, so that
+      ** the value does not get overwritten by a NULL at tag-20191021-002. */
+      sqlite3VdbeAddOp2(v, OP_Copy, regFromSelect+ipkColumn, regRowid);
+    }
+  }
+
+  /* Compute data for ordinary columns of the new entry.  Values
+  ** are written in storage order into registers starting with regData.
+  ** Only ordinary columns are computed in this loop. The rowid
+  ** (if there is one) is computed later and generated columns are
+  ** computed after the rowid since they might depend on the value
+  ** of the rowid.
+  */
+  nHidden = 0;
+  iRegStore = regData;  assert( regData==regRowid+1 );
+  for(i=0; i<pTab->nCol; i++, iRegStore++){
+    int k;
+    u32 colFlags;
+    assert( i>=nHidden );
+    if( i==pTab->iPKey ){
+      /* tag-20191021-002: References to the INTEGER PRIMARY KEY are filled
+      ** using the rowid. So put a NULL in the IPK slot of the record to avoid
+      ** using excess space.  The file format definition requires this extra
+      ** NULL - we cannot optimize further by skipping the column completely */
+      sqlite3VdbeAddOp1(v, OP_SoftNull, iRegStore);
+      continue;
+    }
+    if( ((colFlags = pTab->aCol[i].colFlags) & COLFLAG_NOINSERT)!=0 ){
+      nHidden++;
+      if( (colFlags & COLFLAG_VIRTUAL)!=0 ){
+        /* Virtual columns do not participate in OP_MakeRecord.  So back up
+        ** iRegStore by one slot to compensate for the iRegStore++ in the
+        ** outer for() loop */
+        iRegStore--;
+        continue;
+      }else if( (colFlags & COLFLAG_STORED)!=0 ){
+        /* Stored columns are computed later.  But if there are BEFORE
+        ** triggers, the slots used for stored columns will be OP_Copy-ed
+        ** to a second block of registers, so the register needs to be
+        ** initialized to NULL to avoid an uninitialized register read */
+        if( tmask & TRIGGER_BEFORE ){
+          sqlite3VdbeAddOp1(v, OP_SoftNull, iRegStore);
+        }
+        continue;
+      }else if( pColumn==0 ){
+        /* Hidden columns that are not explicitly named in the INSERT
+        ** get there default value */
+        sqlite3ExprCodeFactorable(pParse, pTab->aCol[i].pDflt, iRegStore);
+        continue;
+      }
+    }
+    if( pColumn ){
+      for(j=0; j<pColumn->nId && pColumn->a[j].idx!=i; j++){}
+      if( j>=pColumn->nId ){
+        /* A column not named in the insert column list gets its
+        ** default value */
+        sqlite3ExprCodeFactorable(pParse, pTab->aCol[i].pDflt, iRegStore);
+        continue;
+      }
+      k = j;
+    }else if( nColumn==0 ){
+      /* This is INSERT INTO ... DEFAULT VALUES.  Load the default value. */
+      sqlite3ExprCodeFactorable(pParse, pTab->aCol[i].pDflt, iRegStore);
+      continue;
+    }else{
+      k = i - nHidden;
+    }
+
+    if( useTempTable ){
+      sqlite3VdbeAddOp3(v, OP_Column, srcTab, k, iRegStore);
+    }else if( pSelect ){
+      if( regFromSelect!=regData ){
+        sqlite3VdbeAddOp2(v, OP_SCopy, regFromSelect+k, iRegStore);
+      }
+    }else{
+      sqlite3ExprCode(pParse, pList->a[k].pExpr, iRegStore);
+    }
   }
 
+
   /* Run the BEFORE and INSTEAD OF triggers, if there are any
   */
   endOfLoop = sqlite3VdbeMakeLabel(pParse);
@@ -122804,25 +126451,21 @@ SQLITE_PRIVATE void sqlite3Insert(
     */
     assert( !IsVirtual(pTab) );
 
-    /* Create the new column data
-    */
-    for(i=j=0; i<pTab->nCol; i++){
-      if( pColumn ){
-        for(j=0; j<pColumn->nId; j++){
-          if( pColumn->a[j].idx==i ) break;
-        }
-      }
-      if( (!useTempTable && !pList) || (pColumn && j>=pColumn->nId)
-            || (pColumn==0 && IsOrdinaryHiddenColumn(&pTab->aCol[i])) ){
-        sqlite3ExprCode(pParse, pTab->aCol[i].pDflt, regCols+i+1);
-      }else if( useTempTable ){
-        sqlite3VdbeAddOp3(v, OP_Column, srcTab, j, regCols+i+1);
-      }else{
-        assert( pSelect==0 ); /* Otherwise useTempTable is true */
-        sqlite3ExprCodeAndCache(pParse, pList->a[j].pExpr, regCols+i+1);
-      }
-      if( pColumn==0 && !IsOrdinaryHiddenColumn(&pTab->aCol[i]) ) j++;
+    /* Copy the new data already generated. */
+    assert( pTab->nNVCol>0 );
+    sqlite3VdbeAddOp3(v, OP_Copy, regRowid+1, regCols+1, pTab->nNVCol-1);
+
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+    /* Compute the new value for generated columns after all other
+    ** columns have already been computed.  This must be done after
+    ** computing the ROWID in case one of the generated columns
+    ** refers to the ROWID. */
+    if( pTab->tabFlags & TF_HasGenerated ){
+      testcase( pTab->tabFlags & TF_HasVirtual );
+      testcase( pTab->tabFlags & TF_HasStored );
+      sqlite3ComputeGeneratedColumns(pParse, regCols+1, pTab);
     }
+#endif
 
     /* If this is an INSERT on a view with an INSTEAD OF INSERT trigger,
     ** do not attempt any conversions before assembling the record.
@@ -122840,19 +126483,17 @@ SQLITE_PRIVATE void sqlite3Insert(
     sqlite3ReleaseTempRange(pParse, regCols, pTab->nCol+1);
   }
 
-  /* Compute the content of the next row to insert into a range of
-  ** registers beginning at regIns.
-  */
   if( !isView ){
     if( IsVirtual(pTab) ){
       /* The row that the VUpdate opcode will delete: none */
       sqlite3VdbeAddOp2(v, OP_Null, 0, regIns);
     }
     if( ipkColumn>=0 ){
+      /* Compute the new rowid */
       if( useTempTable ){
         sqlite3VdbeAddOp3(v, OP_Column, srcTab, ipkColumn, regRowid);
       }else if( pSelect ){
-        sqlite3VdbeAddOp2(v, OP_Copy, regFromSelect+ipkColumn, regRowid);
+        /* Rowid already initialized at tag-20191021-001 */
       }else{
         Expr *pIpk = pList->a[ipkColumn].pExpr;
         if( pIpk->op==TK_NULL && !IsVirtual(pTab) ){
@@ -122885,45 +126526,15 @@ SQLITE_PRIVATE void sqlite3Insert(
     }
     autoIncStep(pParse, regAutoinc, regRowid);
 
-    /* Compute data for all columns of the new entry, beginning
-    ** with the first column.
-    */
-    nHidden = 0;
-    for(i=0; i<pTab->nCol; i++){
-      int iRegStore = regRowid+1+i;
-      if( i==pTab->iPKey ){
-        /* The value of the INTEGER PRIMARY KEY column is always a NULL.
-        ** Whenever this column is read, the rowid will be substituted
-        ** in its place.  Hence, fill this column with a NULL to avoid
-        ** taking up data space with information that will never be used.
-        ** As there may be shallow copies of this value, make it a soft-NULL */
-        sqlite3VdbeAddOp1(v, OP_SoftNull, iRegStore);
-        continue;
-      }
-      if( pColumn==0 ){
-        if( IsHiddenColumn(&pTab->aCol[i]) ){
-          j = -1;
-          nHidden++;
-        }else{
-          j = i - nHidden;
-        }
-      }else{
-        for(j=0; j<pColumn->nId; j++){
-          if( pColumn->a[j].idx==i ) break;
-        }
-      }
-      if( j<0 || nColumn==0 || (pColumn && j>=pColumn->nId) ){
-        sqlite3ExprCodeFactorable(pParse, pTab->aCol[i].pDflt, iRegStore);
-      }else if( useTempTable ){
-        sqlite3VdbeAddOp3(v, OP_Column, srcTab, j, iRegStore);
-      }else if( pSelect ){
-        if( regFromSelect!=regData ){
-          sqlite3VdbeAddOp2(v, OP_SCopy, regFromSelect+j, iRegStore);
-        }
-      }else{
-        sqlite3ExprCode(pParse, pList->a[j].pExpr, iRegStore);
-      }
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+    /* Compute the new value for generated columns after all other
+    ** columns have already been computed.  This must be done after
+    ** computing the ROWID in case one of the generated columns
+    ** is derived from the INTEGER PRIMARY KEY. */
+    if( pTab->tabFlags & TF_HasGenerated ){
+      sqlite3ComputeGeneratedColumns(pParse, regRowid+1, pTab);
     }
+#endif
 
     /* Generate code to check constraints and generate index keys and
     ** do the insertion.
@@ -122953,9 +126564,7 @@ SQLITE_PRIVATE void sqlite3Insert(
       ** cursor that is disturbed. And these instructions both clear the
       ** VdbeCursor.seekResult variable, disabling the OPFLAG_USESEEKRESULT
       ** functionality.  */
-      bUseSeek = (isReplace==0 || (pTrigger==0 &&
-          ((db->flags & SQLITE_ForeignKeys)==0 || sqlite3FkReferences(pTab)==0)
-      ));
+      bUseSeek = (isReplace==0 || !sqlite3VdbeHasSubProgram(v));
       sqlite3CompleteInsertion(pParse, pTab, iDataCur, iIdxCur,
           regIns, aRegIdx, 0, appendFlag, bUseSeek
       );
@@ -122984,6 +126593,15 @@ SQLITE_PRIVATE void sqlite3Insert(
     sqlite3VdbeAddOp1(v, OP_Close, srcTab);
   }else if( pSelect ){
     sqlite3VdbeGoto(v, addrCont);
+#ifdef SQLITE_DEBUG
+    /* If we are jumping back to an OP_Yield that is preceded by an
+    ** OP_ReleaseReg, set the p5 flag on the OP_Goto so that the
+    ** OP_ReleaseReg will be included in the loop. */
+    if( sqlite3VdbeGetOp(v, addrCont-1)->opcode==OP_ReleaseReg ){
+      assert( sqlite3VdbeGetOp(v, addrCont)->opcode==OP_Yield );
+      sqlite3VdbeChangeP5(v, 1);
+    }
+#endif
     sqlite3VdbeJumpHere(v, addrInsTop);
   }
 
@@ -123206,7 +126824,6 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
   int ix;              /* Index loop counter */
   int nCol;            /* Number of columns */
   int onError;         /* Conflict resolution strategy */
-  int addr1;           /* Address of jump instruction */
   int seenReplace = 0; /* True if REPLACE is used to resolve INT PK conflict */
   int nPkField;        /* Number of fields in PRIMARY KEY. 1 for ROWID tables */
   Index *pUpIdx = 0;   /* Index to which to apply the upsert */
@@ -123216,6 +126833,13 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
   int upsertJump = 0;    /* Address of Goto that jumps into upsert subroutine */
   int ipkTop = 0;        /* Top of the IPK uniqueness check */
   int ipkBottom = 0;     /* OP_Goto at the end of the IPK uniqueness check */
+  /* Variables associated with retesting uniqueness constraints after
+  ** replace triggers fire have run */
+  int regTrigCnt;       /* Register used to count replace trigger invocations */
+  int addrRecheck = 0;  /* Jump here to recheck all uniqueness constraints */
+  int lblRecheckOk = 0; /* Each recheck jumps to this label if it passes */
+  Trigger *pTrigger;    /* List of DELETE triggers on the table pTab */
+  int nReplaceTrig = 0; /* Number of replace triggers coded */
 
   isUpdate = regOldData!=0;
   db = pParse->db;
@@ -123242,63 +126866,103 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
 
   /* Test all NOT NULL constraints.
   */
-  for(i=0; i<nCol; i++){
-    if( i==pTab->iPKey ){
-      continue;        /* ROWID is never NULL */
-    }
-    if( aiChng && aiChng[i]<0 ){
-      /* Don't bother checking for NOT NULL on columns that do not change */
-      continue;
-    }
-    onError = pTab->aCol[i].notNull;
-    if( onError==OE_None ) continue;  /* This column is allowed to be NULL */
-    if( overrideError!=OE_Default ){
-      onError = overrideError;
-    }else if( onError==OE_Default ){
-      onError = OE_Abort;
-    }
-    if( onError==OE_Replace && pTab->aCol[i].pDflt==0 ){
-      onError = OE_Abort;
-    }
-    assert( onError==OE_Rollback || onError==OE_Abort || onError==OE_Fail
-        || onError==OE_Ignore || onError==OE_Replace );
-    addr1 = 0;
-    switch( onError ){
-      case OE_Replace: {
-        assert( onError==OE_Replace );
-        addr1 = sqlite3VdbeMakeLabel(pParse);
-        sqlite3VdbeAddOp2(v, OP_NotNull, regNewData+1+i, addr1);
-          VdbeCoverage(v);
-        sqlite3ExprCode(pParse, pTab->aCol[i].pDflt, regNewData+1+i);
-        sqlite3VdbeAddOp2(v, OP_NotNull, regNewData+1+i, addr1);
-          VdbeCoverage(v);
-        onError = OE_Abort;
-        /* Fall through into the OE_Abort case to generate code that runs
-        ** if both the input and the default value are NULL */
-      }
-      case OE_Abort:
-        sqlite3MayAbort(pParse);
-        /* Fall through */
-      case OE_Rollback:
-      case OE_Fail: {
-        char *zMsg = sqlite3MPrintf(db, "%s.%s", pTab->zName,
-                                    pTab->aCol[i].zName);
-        sqlite3VdbeAddOp3(v, OP_HaltIfNull, SQLITE_CONSTRAINT_NOTNULL, onError,
-                          regNewData+1+i);
-        sqlite3VdbeAppendP4(v, zMsg, P4_DYNAMIC);
-        sqlite3VdbeChangeP5(v, P5_ConstraintNotNull);
-        VdbeCoverage(v);
-        if( addr1 ) sqlite3VdbeResolveLabel(v, addr1);
-        break;
-      }
-      default: {
-        assert( onError==OE_Ignore );
-        sqlite3VdbeAddOp2(v, OP_IsNull, regNewData+1+i, ignoreDest);
-        VdbeCoverage(v);
-        break;
+  if( pTab->tabFlags & TF_HasNotNull ){
+    int b2ndPass = 0;         /* True if currently running 2nd pass */
+    int nSeenReplace = 0;     /* Number of ON CONFLICT REPLACE operations */
+    int nGenerated = 0;       /* Number of generated columns with NOT NULL */
+    while(1){  /* Make 2 passes over columns. Exit loop via "break" */
+      for(i=0; i<nCol; i++){
+        int iReg;                        /* Register holding column value */
+        Column *pCol = &pTab->aCol[i];   /* The column to check for NOT NULL */
+        int isGenerated;                 /* non-zero if column is generated */
+        onError = pCol->notNull;
+        if( onError==OE_None ) continue; /* No NOT NULL on this column */
+        if( i==pTab->iPKey ){
+          continue;        /* ROWID is never NULL */
+        }
+        isGenerated = pCol->colFlags & COLFLAG_GENERATED;
+        if( isGenerated && !b2ndPass ){
+          nGenerated++;
+          continue;        /* Generated columns processed on 2nd pass */
+        }
+        if( aiChng && aiChng[i]<0 && !isGenerated ){
+          /* Do not check NOT NULL on columns that do not change */
+          continue;
+        }
+        if( overrideError!=OE_Default ){
+          onError = overrideError;
+        }else if( onError==OE_Default ){
+          onError = OE_Abort;
+        }
+        if( onError==OE_Replace ){
+          if( b2ndPass        /* REPLACE becomes ABORT on the 2nd pass */
+           || pCol->pDflt==0  /* REPLACE is ABORT if no DEFAULT value */
+          ){
+            testcase( pCol->colFlags & COLFLAG_VIRTUAL );
+            testcase( pCol->colFlags & COLFLAG_STORED );
+            testcase( pCol->colFlags & COLFLAG_GENERATED );
+            onError = OE_Abort;
+          }else{
+            assert( !isGenerated );
+          }
+        }else if( b2ndPass && !isGenerated ){
+          continue;
+        }
+        assert( onError==OE_Rollback || onError==OE_Abort || onError==OE_Fail
+            || onError==OE_Ignore || onError==OE_Replace );
+        testcase( i!=sqlite3TableColumnToStorage(pTab, i) );
+        iReg = sqlite3TableColumnToStorage(pTab, i) + regNewData + 1;
+        switch( onError ){
+          case OE_Replace: {
+            int addr1 = sqlite3VdbeAddOp1(v, OP_NotNull, iReg);
+            VdbeCoverage(v);
+            assert( (pCol->colFlags & COLFLAG_GENERATED)==0 );
+            nSeenReplace++;
+            sqlite3ExprCodeCopy(pParse, pCol->pDflt, iReg);
+            sqlite3VdbeJumpHere(v, addr1);
+            break;
+          }
+          case OE_Abort:
+            sqlite3MayAbort(pParse);
+            /* no break */ deliberate_fall_through
+          case OE_Rollback:
+          case OE_Fail: {
+            char *zMsg = sqlite3MPrintf(db, "%s.%s", pTab->zName,
+                                        pCol->zName);
+            sqlite3VdbeAddOp3(v, OP_HaltIfNull, SQLITE_CONSTRAINT_NOTNULL,
+                              onError, iReg);
+            sqlite3VdbeAppendP4(v, zMsg, P4_DYNAMIC);
+            sqlite3VdbeChangeP5(v, P5_ConstraintNotNull);
+            VdbeCoverage(v);
+            break;
+          }
+          default: {
+            assert( onError==OE_Ignore );
+            sqlite3VdbeAddOp2(v, OP_IsNull, iReg, ignoreDest);
+            VdbeCoverage(v);
+            break;
+          }
+        } /* end switch(onError) */
+      } /* end loop i over columns */
+      if( nGenerated==0 && nSeenReplace==0 ){
+        /* If there are no generated columns with NOT NULL constraints
+        ** and no NOT NULL ON CONFLICT REPLACE constraints, then a single
+        ** pass is sufficient */
+        break;
+      }
+      if( b2ndPass ) break;  /* Never need more than 2 passes */
+      b2ndPass = 1;
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+      if( nSeenReplace>0 && (pTab->tabFlags & TF_HasGenerated)!=0 ){
+        /* If any NOT NULL ON CONFLICT REPLACE constraints fired on the
+        ** first pass, recomputed values for all generated columns, as
+        ** those values might depend on columns affected by the REPLACE.
+        */
+        sqlite3ComputeGeneratedColumns(pParse, regNewData+1, pTab);
       }
-    }
-  }
+#endif
+    } /* end of 2-pass loop */
+  } /* end if( has-not-null-constraints ) */
 
   /* Test all CHECK constraints
   */
@@ -123309,6 +126973,7 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
     onError = overrideError!=OE_Default ? overrideError : OE_Abort;
     for(i=0; i<pCheck->nExpr; i++){
       int allOk;
+      Expr *pCopy;
       Expr *pExpr = pCheck->a[i].pExpr;
       if( aiChng
        && !sqlite3ExprReferencesUpdatedColumn(pExpr, aiChng, pkChng)
@@ -123317,13 +126982,21 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
         ** updated so there is no point it verifying the check constraint */
         continue;
       }
+      if( bAffinityDone==0 ){
+        sqlite3TableAffinity(v, pTab, regNewData+1);
+        bAffinityDone = 1;
+      }
       allOk = sqlite3VdbeMakeLabel(pParse);
       sqlite3VdbeVerifyAbortable(v, onError);
-      sqlite3ExprIfTrue(pParse, pExpr, allOk, SQLITE_JUMPIFNULL);
+      pCopy = sqlite3ExprDup(db, pExpr, 0);
+      if( !db->mallocFailed ){
+        sqlite3ExprIfTrue(pParse, pCopy, allOk, SQLITE_JUMPIFNULL);
+      }
+      sqlite3ExprDelete(db, pCopy);
       if( onError==OE_Ignore ){
         sqlite3VdbeGoto(v, ignoreDest);
       }else{
-        char *zName = pCheck->a[i].zName;
+        char *zName = pCheck->a[i].zEName;
         if( zName==0 ) zName = pTab->zName;
         if( onError==OE_Replace ) onError = OE_Abort; /* IMP: R-26383-51744 */
         sqlite3HaltConstraint(pParse, SQLITE_CONSTRAINT_CHECK,
@@ -123380,6 +127053,50 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
     }
   }
 
+  /* Determine if it is possible that triggers (either explicitly coded
+  ** triggers or FK resolution actions) might run as a result of deletes
+  ** that happen when OE_Replace conflict resolution occurs. (Call these
+  ** "replace triggers".)  If any replace triggers run, we will need to
+  ** recheck all of the uniqueness constraints after they have all run.
+  ** But on the recheck, the resolution is OE_Abort instead of OE_Replace.
+  **
+  ** If replace triggers are a possibility, then
+  **
+  **   (1) Allocate register regTrigCnt and initialize it to zero.
+  **       That register will count the number of replace triggers that
+  **       fire.  Constraint recheck only occurs if the number is positive.
+  **   (2) Initialize pTrigger to the list of all DELETE triggers on pTab.
+  **   (3) Initialize addrRecheck and lblRecheckOk
+  **
+  ** The uniqueness rechecking code will create a series of tests to run
+  ** in a second pass.  The addrRecheck and lblRecheckOk variables are
+  ** used to link together these tests which are separated from each other
+  ** in the generate bytecode.
+  */
+  if( (db->flags & (SQLITE_RecTriggers|SQLITE_ForeignKeys))==0 ){
+    /* There are not DELETE triggers nor FK constraints.  No constraint
+    ** rechecks are needed. */
+    pTrigger = 0;
+    regTrigCnt = 0;
+  }else{
+    if( db->flags&SQLITE_RecTriggers ){
+      pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0);
+      regTrigCnt = pTrigger!=0 || sqlite3FkRequired(pParse, pTab, 0, 0);
+    }else{
+      pTrigger = 0;
+      regTrigCnt = sqlite3FkRequired(pParse, pTab, 0, 0);
+    }
+    if( regTrigCnt ){
+      /* Replace triggers might exist.  Allocate the counter and
+      ** initialize it to zero. */
+      regTrigCnt = ++pParse->nMem;
+      sqlite3VdbeAddOp2(v, OP_Integer, 0, regTrigCnt);
+      VdbeComment((v, "trigger count"));
+      lblRecheckOk = sqlite3VdbeMakeLabel(pParse);
+      addrRecheck = lblRecheckOk;
+    }
+  }
+
   /* If rowid is changing, make sure the new rowid does not previously
   ** exist in the table.
   */
@@ -123435,7 +127152,7 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
     switch( onError ){
       default: {
         onError = OE_Abort;
-        /* Fall thru into the next case */
+        /* no break */ deliberate_fall_through
       }
       case OE_Rollback:
       case OE_Abort:
@@ -123469,14 +127186,12 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
         ** to run without a statement journal if there are no indexes on the
         ** table.
         */
-        Trigger *pTrigger = 0;
-        if( db->flags&SQLITE_RecTriggers ){
-          pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0);
-        }
-        if( pTrigger || sqlite3FkRequired(pParse, pTab, 0, 0) ){
+        if( regTrigCnt ){
           sqlite3MultiWrite(pParse);
           sqlite3GenerateRowDelete(pParse, pTab, pTrigger, iDataCur, iIdxCur,
                                    regNewData, 1, 0, OE_Replace, 1, -1);
+          sqlite3VdbeAddOp2(v, OP_AddImm, regTrigCnt, 1); /* incr trigger cnt */
+          nReplaceTrig++;
         }else{
 #ifdef SQLITE_ENABLE_PREUPDATE_HOOK
           assert( HasRowid(pTab) );
@@ -123498,7 +127213,7 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
 #ifndef SQLITE_OMIT_UPSERT
       case OE_Update: {
         sqlite3UpsertDoUpdate(pParse, pUpsert, pTab, 0, iDataCur);
-        /* Fall through */
+        /* no break */ deliberate_fall_through
       }
 #endif
       case OE_Ignore: {
@@ -123526,6 +127241,7 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
     int regR;            /* Range of registers holding conflicting PK */
     int iThisCur;        /* Cursor for this UNIQUE index */
     int addrUniqueOk;    /* Jump here if the UNIQUE constraint is satisfied */
+    int addrConflictCk;  /* First opcode in the conflict check logic */
 
     if( aRegIdx[ix]==0 ) continue;  /* Skip indices that do not change */
     if( pUpIdx==pIdx ){
@@ -123540,7 +127256,7 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
       sqlite3TableAffinity(v, pTab, regNewData+1);
       bAffinityDone = 1;
     }
-    VdbeNoopComment((v, "uniqueness check for %s", pIdx->zName));
+    VdbeNoopComment((v, "prep index %s", pIdx->zName));
     iThisCur = iIdxCur+ix;
 
 
@@ -123565,14 +127281,15 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
         sqlite3ExprCodeCopy(pParse, pIdx->aColExpr->a[i].pExpr, regIdx+i);
         pParse->iSelfTab = 0;
         VdbeComment((v, "%s column %d", pIdx->zName, i));
+      }else if( iField==XN_ROWID || iField==pTab->iPKey ){
+        x = regNewData;
+        sqlite3VdbeAddOp2(v, OP_IntCopy, x, regIdx+i);
+        VdbeComment((v, "rowid"));
       }else{
-        if( iField==XN_ROWID || iField==pTab->iPKey ){
-          x = regNewData;
-        }else{
-          x = iField + regNewData + 1;
-        }
-        sqlite3VdbeAddOp2(v, iField<0 ? OP_IntCopy : OP_SCopy, x, regIdx+i);
-        VdbeComment((v, "%s", iField<0 ? "rowid" : pTab->aCol[iField].zName));
+        testcase( sqlite3TableColumnToStorage(pTab, iField)!=iField );
+        x = sqlite3TableColumnToStorage(pTab, iField) + regNewData + 1;
+        sqlite3VdbeAddOp2(v, OP_SCopy, x, regIdx+i);
+        VdbeComment((v, "%s", pTab->aCol[iField].zName));
       }
     }
     sqlite3VdbeAddOp3(v, OP_MakeRecord, regIdx, pIdx->nColumn, aRegIdx[ix]);
@@ -123582,6 +127299,7 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
       sqlite3SetMakeRecordP5(v, pIdx->pTable);
     }
 #endif
+    sqlite3VdbeReleaseRegisters(pParse, regIdx, pIdx->nColumn, 0, 0);
 
     /* In an UPDATE operation, if this index is the PRIMARY KEY index
     ** of a WITHOUT ROWID table and there has been no change the
@@ -123639,8 +127357,9 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
 
     /* Check to see if the new index entry will be unique */
     sqlite3VdbeVerifyAbortable(v, onError);
-    sqlite3VdbeAddOp4Int(v, OP_NoConflict, iThisCur, addrUniqueOk,
-                         regIdx, pIdx->nKeyCol); VdbeCoverage(v);
+    addrConflictCk =
+      sqlite3VdbeAddOp4Int(v, OP_NoConflict, iThisCur, addrUniqueOk,
+                           regIdx, pIdx->nKeyCol); VdbeCoverage(v);
 
     /* Generate code to handle collisions */
     regR = (pIdx==pPk) ? regIdx : sqlite3GetTempRange(pParse, nPkField);
@@ -123661,7 +127380,7 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
         if( pIdx!=pPk ){
           for(i=0; i<pPk->nKeyCol; i++){
             assert( pPk->aiColumn[i]>=0 );
-            x = sqlite3ColumnOfIndex(pIdx, pPk->aiColumn[i]);
+            x = sqlite3TableColumnToIndex(pIdx, pPk->aiColumn[i]);
             sqlite3VdbeAddOp3(v, OP_Column, iThisCur, x, regR+i);
             VdbeComment((v, "%s.%s", pTab->zName,
                          pTab->aCol[pPk->aiColumn[i]].zName));
@@ -123687,6 +127406,7 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
               addrJump = addrUniqueOk;
               op = OP_Eq;
             }
+            x = sqlite3TableColumnToStorage(pTab, x);
             sqlite3VdbeAddOp4(v, op,
                 regOldData+1+x, addrJump, regCmp+i, p4, P4_COLLSEQ
             );
@@ -123714,7 +127434,7 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
 #ifndef SQLITE_OMIT_UPSERT
       case OE_Update: {
         sqlite3UpsertDoUpdate(pParse, pUpsert, pTab, pIdx, iIdxCur+ix);
-        /* Fall through */
+        /* no break */ deliberate_fall_through
       }
 #endif
       case OE_Ignore: {
@@ -123723,17 +127443,73 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
         break;
       }
       default: {
-        Trigger *pTrigger = 0;
+        int nConflictCk;   /* Number of opcodes in conflict check logic */
+
         assert( onError==OE_Replace );
-        if( db->flags&SQLITE_RecTriggers ){
-          pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0);
-        }
-        if( pTrigger || sqlite3FkRequired(pParse, pTab, 0, 0) ){
+        nConflictCk = sqlite3VdbeCurrentAddr(v) - addrConflictCk;
+        assert( nConflictCk>0 );
+        testcase( nConflictCk>1 );
+        if( regTrigCnt ){
           sqlite3MultiWrite(pParse);
+          nReplaceTrig++;
+        }
+        if( pTrigger && isUpdate ){
+          sqlite3VdbeAddOp1(v, OP_CursorLock, iDataCur);
         }
         sqlite3GenerateRowDelete(pParse, pTab, pTrigger, iDataCur, iIdxCur,
             regR, nPkField, 0, OE_Replace,
             (pIdx==pPk ? ONEPASS_SINGLE : ONEPASS_OFF), iThisCur);
+        if( pTrigger && isUpdate ){
+          sqlite3VdbeAddOp1(v, OP_CursorUnlock, iDataCur);
+        }
+        if( regTrigCnt ){
+          int addrBypass;  /* Jump destination to bypass recheck logic */
+
+          sqlite3VdbeAddOp2(v, OP_AddImm, regTrigCnt, 1); /* incr trigger cnt */
+          addrBypass = sqlite3VdbeAddOp0(v, OP_Goto);  /* Bypass recheck */
+          VdbeComment((v, "bypass recheck"));
+
+          /* Here we insert code that will be invoked after all constraint
+          ** checks have run, if and only if one or more replace triggers
+          ** fired. */
+          sqlite3VdbeResolveLabel(v, lblRecheckOk);
+          lblRecheckOk = sqlite3VdbeMakeLabel(pParse);
+          if( pIdx->pPartIdxWhere ){
+            /* Bypass the recheck if this partial index is not defined
+            ** for the current row */
+            sqlite3VdbeAddOp2(v, OP_IsNull, regIdx-1, lblRecheckOk);
+            VdbeCoverage(v);
+          }
+          /* Copy the constraint check code from above, except change
+          ** the constraint-ok jump destination to be the address of
+          ** the next retest block */
+          while( nConflictCk>0 ){
+            VdbeOp x;    /* Conflict check opcode to copy */
+            /* The sqlite3VdbeAddOp4() call might reallocate the opcode array.
+            ** Hence, make a complete copy of the opcode, rather than using
+            ** a pointer to the opcode. */
+            x = *sqlite3VdbeGetOp(v, addrConflictCk);
+            if( x.opcode!=OP_IdxRowid ){
+              int p2;      /* New P2 value for copied conflict check opcode */
+              const char *zP4;
+              if( sqlite3OpcodeProperty[x.opcode]&OPFLG_JUMP ){
+                p2 = lblRecheckOk;
+              }else{
+                p2 = x.p2;
+              }
+              zP4 = x.p4type==P4_INT32 ? SQLITE_INT_TO_PTR(x.p4.i) : x.p4.z;
+              sqlite3VdbeAddOp4(v, x.opcode, x.p1, p2, x.p3, zP4, x.p4type);
+              sqlite3VdbeChangeP5(v, x.p5);
+              VdbeCoverageIf(v, p2!=x.p2);
+            }
+            nConflictCk--;
+            addrConflictCk++;
+          }
+          /* If the retest fails, issue an abort */
+          sqlite3UniqueConstraint(pParse, OE_Abort, pIdx);
+
+          sqlite3VdbeJumpHere(v, addrBypass); /* Terminate the recheck bypass */
+        }
         seenReplace = 1;
         break;
       }
@@ -123754,10 +127530,30 @@ SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(
     sqlite3VdbeJumpHere(v, ipkBottom);
   }
 
+  /* Recheck all uniqueness constraints after replace triggers have run */
+  testcase( regTrigCnt!=0 && nReplaceTrig==0 );
+  assert( regTrigCnt!=0 || nReplaceTrig==0 );
+  if( nReplaceTrig ){
+    sqlite3VdbeAddOp2(v, OP_IfNot, regTrigCnt, lblRecheckOk);VdbeCoverage(v);
+    if( !pPk ){
+      if( isUpdate ){
+        sqlite3VdbeAddOp3(v, OP_Eq, regNewData, addrRecheck, regOldData);
+        sqlite3VdbeChangeP5(v, SQLITE_NOTNULL);
+        VdbeCoverage(v);
+      }
+      sqlite3VdbeAddOp3(v, OP_NotExists, iDataCur, addrRecheck, regNewData);
+      VdbeCoverage(v);
+      sqlite3RowidConstraint(pParse, OE_Abort, pTab);
+    }else{
+      sqlite3VdbeGoto(v, addrRecheck);
+    }
+    sqlite3VdbeResolveLabel(v, lblRecheckOk);
+  }
+
   /* Generate the table record */
   if( HasRowid(pTab) ){
     int regRec = aRegIdx[ix];
-    sqlite3VdbeAddOp3(v, OP_MakeRecord, regNewData+1, pTab->nCol, regRec);
+    sqlite3VdbeAddOp3(v, OP_MakeRecord, regNewData+1, pTab->nNVCol, regRec);
     sqlite3SetMakeRecordP5(v, pTab);
     if( !bAffinityDone ){
       sqlite3TableAffinity(v, pTab, 0);
@@ -123824,6 +127620,10 @@ SQLITE_PRIVATE void sqlite3CompleteInsertion(
   assert( v!=0 );
   assert( pTab->pSelect==0 );  /* This table is not a VIEW */
   for(i=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){
+    /* All REPLACE indexes are at the end of the list */
+    assert( pIdx->onError!=OE_Replace
+         || pIdx->pNext==0
+         || pIdx->pNext->onError==OE_Replace );
     if( aRegIdx[i]==0 ) continue;
     if( pIdx->pPartIdxWhere ){
       sqlite3VdbeAddOp2(v, OP_IsNull, aRegIdx[i], sqlite3VdbeCurrentAddr(v)+2);
@@ -123974,7 +127774,7 @@ static int xferCompatibleIndex(Index *pDest, Index *pSrc){
   int i;
   assert( pDest && pSrc );
   assert( pDest->pTable!=pSrc->pTable );
-  if( pDest->nKeyCol!=pSrc->nKeyCol ){
+  if( pDest->nKeyCol!=pSrc->nKeyCol || pDest->nColumn!=pSrc->nColumn ){
     return 0;   /* Different number of columns */
   }
   if( pDest->onError!=pSrc->onError ){
@@ -124122,7 +127922,7 @@ static int xferOptimization(
     return 0;   /* FROM clause does not contain a real table */
   }
   if( pSrc->tnum==pDest->tnum && pSrc->pSchema==pDest->pSchema ){
-    testcase( pSrc!=pDest ); /* Possible due to bad sqlite_master.rootpage */
+    testcase( pSrc!=pDest ); /* Possible due to bad sqlite_schema.rootpage */
     return 0;   /* tab1 and tab2 may not be the same table */
   }
   if( HasRowid(pDest)!=HasRowid(pSrc) ){
@@ -124152,6 +127952,39 @@ static int xferOptimization(
       return 0;    /* Neither table may have __hidden__ columns */
     }
 #endif
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+    /* Even if tables t1 and t2 have identical schemas, if they contain
+    ** generated columns, then this statement is semantically incorrect:
+    **
+    **     INSERT INTO t2 SELECT * FROM t1;
+    **
+    ** The reason is that generated column values are returned by the
+    ** the SELECT statement on the right but the INSERT statement on the
+    ** left wants them to be omitted.
+    **
+    ** Nevertheless, this is a useful notational shorthand to tell SQLite
+    ** to do a bulk transfer all of the content from t1 over to t2.
+    **
+    ** We could, in theory, disable this (except for internal use by the
+    ** VACUUM command where it is actually needed).  But why do that?  It
+    ** seems harmless enough, and provides a useful service.
+    */
+    if( (pDestCol->colFlags & COLFLAG_GENERATED) !=
+        (pSrcCol->colFlags & COLFLAG_GENERATED) ){
+      return 0;    /* Both columns have the same generated-column type */
+    }
+    /* But the transfer is only allowed if both the source and destination
+    ** tables have the exact same expressions for generated columns.
+    ** This requirement could be relaxed for VIRTUAL columns, I suppose.
+    */
+    if( (pDestCol->colFlags & COLFLAG_GENERATED)!=0 ){
+      if( sqlite3ExprCompare(0, pSrcCol->pDflt, pDestCol->pDflt, -1)!=0 ){
+        testcase( pDestCol->colFlags & COLFLAG_VIRTUAL );
+        testcase( pDestCol->colFlags & COLFLAG_STORED );
+        return 0;  /* Different generator expressions */
+      }
+    }
+#endif
     if( pDestCol->affinity!=pSrcCol->affinity ){
       return 0;    /* Affinity must be the same on all columns */
     }
@@ -124162,7 +127995,7 @@ static int xferOptimization(
       return 0;    /* tab2 must be NOT NULL if tab1 is */
     }
     /* Default values for second and subsequent columns need to match. */
-    if( i>0 ){
+    if( (pDestCol->colFlags & COLFLAG_GENERATED)==0 && i>0 ){
       assert( pDestCol->pDflt==0 || pDestCol->pDflt->op==TK_SPAN );
       assert( pSrcCol->pDflt==0 || pSrcCol->pDflt->op==TK_SPAN );
       if( (pDestCol->pDflt==0)!=(pSrcCol->pDflt==0)
@@ -124273,14 +128106,13 @@ static int xferOptimization(
       addr1 = sqlite3VdbeAddOp2(v, OP_Rowid, iSrc, regRowid);
       assert( (pDest->tabFlags & TF_Autoincrement)==0 );
     }
-    sqlite3VdbeAddOp3(v, OP_RowData, iSrc, regData, 1);
     if( db->mDbFlags & DBFLAG_Vacuum ){
       sqlite3VdbeAddOp1(v, OP_SeekEnd, iDest);
-      insFlags = OPFLAG_NCHANGE|OPFLAG_LASTROWID|
-                           OPFLAG_APPEND|OPFLAG_USESEEKRESULT;
+      insFlags = OPFLAG_APPEND|OPFLAG_USESEEKRESULT;
     }else{
       insFlags = OPFLAG_NCHANGE|OPFLAG_LASTROWID|OPFLAG_APPEND;
     }
+    sqlite3VdbeAddOp3(v, OP_RowData, iSrc, regData, 1);
     sqlite3VdbeAddOp4(v, OP_Insert, iDest, regData, regRowid,
                       (char*)pDest, P4_TABLE);
     sqlite3VdbeChangeP5(v, insFlags);
@@ -124305,7 +128137,6 @@ static int xferOptimization(
     sqlite3VdbeChangeP5(v, OPFLAG_BULKCSR);
     VdbeComment((v, "%s", pDestIdx->zName));
     addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iSrc, 0); VdbeCoverage(v);
-    sqlite3VdbeAddOp3(v, OP_RowData, iSrc, regData, 1);
     if( db->mDbFlags & DBFLAG_Vacuum ){
       /* This INSERT command is part of a VACUUM operation, which guarantees
       ** that the destination table is empty. If all indexed columns use
@@ -124329,10 +128160,10 @@ static int xferOptimization(
         idxInsFlags = OPFLAG_USESEEKRESULT;
         sqlite3VdbeAddOp1(v, OP_SeekEnd, iDest);
       }
-    }
-    if( !HasRowid(pSrc) && pDestIdx->idxType==SQLITE_IDXTYPE_PRIMARYKEY ){
+    }else if( !HasRowid(pSrc) && pDestIdx->idxType==SQLITE_IDXTYPE_PRIMARYKEY ){
       idxInsFlags |= OPFLAG_NCHANGE;
     }
+    sqlite3VdbeAddOp3(v, OP_RowData, iSrc, regData, 1);
     sqlite3VdbeAddOp2(v, OP_IdxInsert, iDest, regData);
     sqlite3VdbeChangeP5(v, idxInsFlags|OPFLAG_APPEND);
     sqlite3VdbeAddOp2(v, OP_Next, iSrc, addr1+1); VdbeCoverage(v);
@@ -124847,6 +128678,17 @@ struct sqlite3_api_routines {
   int (*value_frombind)(sqlite3_value*);
   /* Version 3.30.0 and later */
   int (*drop_modules)(sqlite3*,const char**);
+  /* Version 3.31.0 and later */
+  sqlite3_int64 (*hard_heap_limit64)(sqlite3_int64);
+  const char *(*uri_key)(const char*,int);
+  const char *(*filename_database)(const char*);
+  const char *(*filename_journal)(const char*);
+  const char *(*filename_wal)(const char*);
+  /* Version 3.32.0 and later */
+  char *(*create_filename)(const char*,const char*,const char*,
+                           int,const char**);
+  void (*free_filename)(char*);
+  sqlite3_file *(*database_file_object)(const char*);
 };
 
 /*
@@ -125137,10 +128979,20 @@ typedef int (*sqlite3_loadext_entry)(
 /* Version 3.26.0 and later */
 #define sqlite3_normalized_sql         sqlite3_api->normalized_sql
 /* Version 3.28.0 and later */
-#define sqlite3_stmt_isexplain         sqlite3_api->isexplain
-#define sqlite3_value_frombind         sqlite3_api->frombind
+#define sqlite3_stmt_isexplain         sqlite3_api->stmt_isexplain
+#define sqlite3_value_frombind         sqlite3_api->value_frombind
 /* Version 3.30.0 and later */
 #define sqlite3_drop_modules           sqlite3_api->drop_modules
+/* Version 3.31.0 and later */
+#define sqlite3_hard_heap_limit64      sqlite3_api->hard_heap_limit64
+#define sqlite3_uri_key                sqlite3_api->uri_key
+#define sqlite3_filename_database      sqlite3_api->filename_database
+#define sqlite3_filename_journal       sqlite3_api->filename_journal
+#define sqlite3_filename_wal           sqlite3_api->filename_wal
+/* Version 3.32.0 and later */
+#define sqlite3_create_filename        sqlite3_api->create_filename
+#define sqlite3_free_filename          sqlite3_api->free_filename
+#define sqlite3_database_file_object   sqlite3_api->database_file_object
 #endif /* !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) */
 
 #if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION)
@@ -125613,8 +129465,26 @@ static const sqlite3_api_routines sqlite3Apis = {
 #else
   0,
 #endif
+  /* Version 3.31.0 and later */
+  sqlite3_hard_heap_limit64,
+  sqlite3_uri_key,
+  sqlite3_filename_database,
+  sqlite3_filename_journal,
+  sqlite3_filename_wal,
+  /* Version 3.32.0 and later */
+  sqlite3_create_filename,
+  sqlite3_free_filename,
+  sqlite3_database_file_object,
 };
 
+/* True if x is the directory separator character
+*/
+#if SQLITE_OS_WIN
+# define DirSep(X)  ((X)=='/'||(X)=='\\')
+#else
+# define DirSep(X)  ((X)=='/')
+#endif
+
 /*
 ** Attempt to load an SQLite extension library contained in the file
 ** zFile.  The entry point is zProc.  zProc may be 0 in which case a
@@ -125716,7 +129586,7 @@ static int sqlite3LoadExtension(
       return SQLITE_NOMEM_BKPT;
     }
     memcpy(zAltEntry, "sqlite3_", 8);
-    for(iFile=ncFile-1; iFile>=0 && zFile[iFile]!='/'; iFile--){}
+    for(iFile=ncFile-1; iFile>=0 && !DirSep(zFile[iFile]); iFile--){}
     iFile++;
     if( sqlite3_strnicmp(zFile+iFile, "lib", 3)==0 ) iFile += 3;
     for(iEntry=8; (c = zFile[iFile])!=0 && c!='.'; iFile++){
@@ -125816,7 +129686,7 @@ SQLITE_API int sqlite3_enable_load_extension(sqlite3 *db, int onoff){
 ** The following object holds the list of automatically loaded
 ** extensions.
 **
-** This list is shared across threads.  The SQLITE_MUTEX_STATIC_MASTER
+** This list is shared across threads.  The SQLITE_MUTEX_STATIC_MAIN
 ** mutex must be held while accessing this list.
 */
 typedef struct sqlite3AutoExtList sqlite3AutoExtList;
@@ -125858,7 +129728,7 @@ SQLITE_API int sqlite3_auto_extension(
   {
     u32 i;
 #if SQLITE_THREADSAFE
-    sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+    sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN);
 #endif
     wsdAutoextInit;
     sqlite3_mutex_enter(mutex);
@@ -125896,7 +129766,7 @@ SQLITE_API int sqlite3_cancel_auto_extension(
   void (*xInit)(void)
 ){
 #if SQLITE_THREADSAFE
-  sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+  sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN);
 #endif
   int i;
   int n = 0;
@@ -125923,7 +129793,7 @@ SQLITE_API void sqlite3_reset_auto_extension(void){
 #endif
   {
 #if SQLITE_THREADSAFE
-    sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+    sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN);
 #endif
     wsdAutoextInit;
     sqlite3_mutex_enter(mutex);
@@ -125953,7 +129823,7 @@ SQLITE_PRIVATE void sqlite3AutoLoadExtensions(sqlite3 *db){
   for(i=0; go; i++){
     char *zErrmsg;
 #if SQLITE_THREADSAFE
-    sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER);
+    sqlite3_mutex *mutex = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN);
 #endif
 #ifdef SQLITE_OMIT_LOAD_EXTENSION
     const sqlite3_api_routines *pThunk = 0;
@@ -126019,50 +129889,52 @@ SQLITE_PRIVATE void sqlite3AutoLoadExtensions(sqlite3 *db){
 */
 
 /* The various pragma types */
-#define PragTyp_HEADER_VALUE                   0
-#define PragTyp_AUTO_VACUUM                    1
-#define PragTyp_FLAG                           2
-#define PragTyp_BUSY_TIMEOUT                   3
-#define PragTyp_CACHE_SIZE                     4
-#define PragTyp_CACHE_SPILL                    5
-#define PragTyp_CASE_SENSITIVE_LIKE            6
-#define PragTyp_COLLATION_LIST                 7
-#define PragTyp_COMPILE_OPTIONS                8
-#define PragTyp_DATA_STORE_DIRECTORY           9
-#define PragTyp_DATABASE_LIST                 10
-#define PragTyp_DEFAULT_CACHE_SIZE            11
-#define PragTyp_ENCODING                      12
-#define PragTyp_FOREIGN_KEY_CHECK             13
-#define PragTyp_FOREIGN_KEY_LIST              14
-#define PragTyp_FUNCTION_LIST                 15
-#define PragTyp_INCREMENTAL_VACUUM            16
-#define PragTyp_INDEX_INFO                    17
-#define PragTyp_INDEX_LIST                    18
-#define PragTyp_INTEGRITY_CHECK               19
-#define PragTyp_JOURNAL_MODE                  20
-#define PragTyp_JOURNAL_SIZE_LIMIT            21
-#define PragTyp_LOCK_PROXY_FILE               22
-#define PragTyp_LOCKING_MODE                  23
-#define PragTyp_PAGE_COUNT                    24
-#define PragTyp_MMAP_SIZE                     25
-#define PragTyp_MODULE_LIST                   26
-#define PragTyp_OPTIMIZE                      27
-#define PragTyp_PAGE_SIZE                     28
-#define PragTyp_PRAGMA_LIST                   29
-#define PragTyp_SECURE_DELETE                 30
-#define PragTyp_SHRINK_MEMORY                 31
-#define PragTyp_SOFT_HEAP_LIMIT               32
-#define PragTyp_SYNCHRONOUS                   33
-#define PragTyp_TABLE_INFO                    34
-#define PragTyp_TEMP_STORE                    35
-#define PragTyp_TEMP_STORE_DIRECTORY          36
-#define PragTyp_THREADS                       37
-#define PragTyp_WAL_AUTOCHECKPOINT            38
-#define PragTyp_WAL_CHECKPOINT                39
-#define PragTyp_ACTIVATE_EXTENSIONS           40
-#define PragTyp_KEY                           41
-#define PragTyp_LOCK_STATUS                   42
-#define PragTyp_STATS                         43
+#define PragTyp_KEY                          255
+#define PragTyp_ACTIVATE_EXTENSIONS            0
+#define PragTyp_ANALYSIS_LIMIT                 1
+#define PragTyp_HEADER_VALUE                   2
+#define PragTyp_AUTO_VACUUM                    3
+#define PragTyp_FLAG                           4
+#define PragTyp_BUSY_TIMEOUT                   5
+#define PragTyp_CACHE_SIZE                     6
+#define PragTyp_CACHE_SPILL                    7
+#define PragTyp_CASE_SENSITIVE_LIKE            8
+#define PragTyp_COLLATION_LIST                 9
+#define PragTyp_COMPILE_OPTIONS               10
+#define PragTyp_DATA_STORE_DIRECTORY          11
+#define PragTyp_DATABASE_LIST                 12
+#define PragTyp_DEFAULT_CACHE_SIZE            13
+#define PragTyp_ENCODING                      14
+#define PragTyp_FOREIGN_KEY_CHECK             15
+#define PragTyp_FOREIGN_KEY_LIST              16
+#define PragTyp_FUNCTION_LIST                 17
+#define PragTyp_HARD_HEAP_LIMIT               18
+#define PragTyp_INCREMENTAL_VACUUM            19
+#define PragTyp_INDEX_INFO                    20
+#define PragTyp_INDEX_LIST                    21
+#define PragTyp_INTEGRITY_CHECK               22
+#define PragTyp_JOURNAL_MODE                  23
+#define PragTyp_JOURNAL_SIZE_LIMIT            24
+#define PragTyp_LOCK_PROXY_FILE               25
+#define PragTyp_LOCKING_MODE                  26
+#define PragTyp_PAGE_COUNT                    27
+#define PragTyp_MMAP_SIZE                     28
+#define PragTyp_MODULE_LIST                   29
+#define PragTyp_OPTIMIZE                      30
+#define PragTyp_PAGE_SIZE                     31
+#define PragTyp_PRAGMA_LIST                   32
+#define PragTyp_SECURE_DELETE                 33
+#define PragTyp_SHRINK_MEMORY                 34
+#define PragTyp_SOFT_HEAP_LIMIT               35
+#define PragTyp_SYNCHRONOUS                   36
+#define PragTyp_TABLE_INFO                    37
+#define PragTyp_TEMP_STORE                    38
+#define PragTyp_TEMP_STORE_DIRECTORY          39
+#define PragTyp_THREADS                       40
+#define PragTyp_WAL_AUTOCHECKPOINT            41
+#define PragTyp_WAL_CHECKPOINT                42
+#define PragTyp_LOCK_STATUS                   43
+#define PragTyp_STATS                         44
 
 /* Property flags associated with various pragma. */
 #define PragFlg_NeedSchema 0x01 /* Force schema load before running */
@@ -126101,35 +129973,39 @@ static const char *const pragCName[] = {
   /*  18 */ "desc",
   /*  19 */ "coll",
   /*  20 */ "key",
-  /*  21 */ "tbl",         /* Used by: stats */
-  /*  22 */ "idx",
-  /*  23 */ "wdth",
-  /*  24 */ "hght",
-  /*  25 */ "flgs",
-  /*  26 */ "seq",         /* Used by: index_list */
-  /*  27 */ "name",
-  /*  28 */ "unique",
-  /*  29 */ "origin",
-  /*  30 */ "partial",
-  /*  31 */ "table",       /* Used by: foreign_key_check */
-  /*  32 */ "rowid",
-  /*  33 */ "parent",
-  /*  34 */ "fkid",
+  /*  21 */ "name",        /* Used by: function_list */
+  /*  22 */ "builtin",
+  /*  23 */ "type",
+  /*  24 */ "enc",
+  /*  25 */ "narg",
+  /*  26 */ "flags",
+  /*  27 */ "tbl",         /* Used by: stats */
+  /*  28 */ "idx",
+  /*  29 */ "wdth",
+  /*  30 */ "hght",
+  /*  31 */ "flgs",
+  /*  32 */ "seq",         /* Used by: index_list */
+  /*  33 */ "name",
+  /*  34 */ "unique",
+  /*  35 */ "origin",
+  /*  36 */ "partial",
+  /*  37 */ "table",       /* Used by: foreign_key_check */
+  /*  38 */ "rowid",
+  /*  39 */ "parent",
+  /*  40 */ "fkid",
                            /* index_info reuses 15 */
-  /*  35 */ "seq",         /* Used by: database_list */
-  /*  36 */ "name",
-  /*  37 */ "file",
-  /*  38 */ "busy",        /* Used by: wal_checkpoint */
-  /*  39 */ "log",
-  /*  40 */ "checkpointed",
-  /*  41 */ "name",        /* Used by: function_list */
-  /*  42 */ "builtin",
-                           /* collation_list reuses 26 */
-  /*  43 */ "database",    /* Used by: lock_status */
-  /*  44 */ "status",
-  /*  45 */ "cache_size",  /* Used by: default_cache_size */
+  /*  41 */ "seq",         /* Used by: database_list */
+  /*  42 */ "name",
+  /*  43 */ "file",
+  /*  44 */ "busy",        /* Used by: wal_checkpoint */
+  /*  45 */ "log",
+  /*  46 */ "checkpointed",
+                           /* collation_list reuses 32 */
+  /*  47 */ "database",    /* Used by: lock_status */
+  /*  48 */ "status",
+  /*  49 */ "cache_size",  /* Used by: default_cache_size */
                            /* module_list pragma_list reuses 9 */
-  /*  46 */ "timeout",     /* Used by: busy_timeout */
+  /*  50 */ "timeout",     /* Used by: busy_timeout */
 };
 
 /* Definitions of all built-in pragmas */
@@ -126142,13 +130018,18 @@ typedef struct PragmaName {
   u64 iArg;                /* Extra argument */
 } PragmaName;
 static const PragmaName aPragmaName[] = {
-#if defined(SQLITE_HAS_CODEC) || defined(SQLITE_ENABLE_CEROD)
+#if defined(SQLITE_ENABLE_CEROD)
  {/* zName:     */ "activate_extensions",
   /* ePragTyp:  */ PragTyp_ACTIVATE_EXTENSIONS,
   /* ePragFlg:  */ 0,
   /* ColNames:  */ 0, 0,
   /* iArg:      */ 0 },
 #endif
+ {/* zName:     */ "analysis_limit",
+  /* ePragTyp:  */ PragTyp_ANALYSIS_LIMIT,
+  /* ePragFlg:  */ PragFlg_Result0,
+  /* ColNames:  */ 0, 0,
+  /* iArg:      */ 0 },
 #if !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS)
  {/* zName:     */ "application_id",
   /* ePragTyp:  */ PragTyp_HEADER_VALUE,
@@ -126175,7 +130056,7 @@ static const PragmaName aPragmaName[] = {
  {/* zName:     */ "busy_timeout",
   /* ePragTyp:  */ PragTyp_BUSY_TIMEOUT,
   /* ePragFlg:  */ PragFlg_Result0,
-  /* ColNames:  */ 46, 1,
+  /* ColNames:  */ 50, 1,
   /* iArg:      */ 0 },
 #if !defined(SQLITE_OMIT_PAGER_PRAGMAS)
  {/* zName:     */ "cache_size",
@@ -126214,7 +130095,7 @@ static const PragmaName aPragmaName[] = {
  {/* zName:     */ "collation_list",
   /* ePragTyp:  */ PragTyp_COLLATION_LIST,
   /* ePragFlg:  */ PragFlg_Result0,
-  /* ColNames:  */ 26, 2,
+  /* ColNames:  */ 32, 2,
   /* iArg:      */ 0 },
 #endif
 #if !defined(SQLITE_OMIT_COMPILEOPTION_DIAGS)
@@ -126249,14 +130130,14 @@ static const PragmaName aPragmaName[] = {
  {/* zName:     */ "database_list",
   /* ePragTyp:  */ PragTyp_DATABASE_LIST,
   /* ePragFlg:  */ PragFlg_NeedSchema|PragFlg_Result0,
-  /* ColNames:  */ 35, 3,
+  /* ColNames:  */ 41, 3,
   /* iArg:      */ 0 },
 #endif
 #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) && !defined(SQLITE_OMIT_DEPRECATED)
  {/* zName:     */ "default_cache_size",
   /* ePragTyp:  */ PragTyp_DEFAULT_CACHE_SIZE,
   /* ePragFlg:  */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_SchemaReq|PragFlg_NoColumns1,
-  /* ColNames:  */ 45, 1,
+  /* ColNames:  */ 49, 1,
   /* iArg:      */ 0 },
 #endif
 #if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
@@ -126285,8 +130166,8 @@ static const PragmaName aPragmaName[] = {
 #if !defined(SQLITE_OMIT_FOREIGN_KEY) && !defined(SQLITE_OMIT_TRIGGER)
  {/* zName:     */ "foreign_key_check",
   /* ePragTyp:  */ PragTyp_FOREIGN_KEY_CHECK,
-  /* ePragFlg:  */ PragFlg_NeedSchema|PragFlg_Result0,
-  /* ColNames:  */ 31, 4,
+  /* ePragFlg:  */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_Result1|PragFlg_SchemaOpt,
+  /* ColNames:  */ 37, 4,
   /* iArg:      */ 0 },
 #endif
 #if !defined(SQLITE_OMIT_FOREIGN_KEY)
@@ -126329,10 +130210,16 @@ static const PragmaName aPragmaName[] = {
  {/* zName:     */ "function_list",
   /* ePragTyp:  */ PragTyp_FUNCTION_LIST,
   /* ePragFlg:  */ PragFlg_Result0,
-  /* ColNames:  */ 41, 2,
+  /* ColNames:  */ 21, 6,
   /* iArg:      */ 0 },
 #endif
 #endif
+ {/* zName:     */ "hard_heap_limit",
+  /* ePragTyp:  */ PragTyp_HARD_HEAP_LIMIT,
+  /* ePragFlg:  */ PragFlg_Result0,
+  /* ColNames:  */ 0, 0,
+  /* iArg:      */ 0 },
+/* BEGIN SQLCIPHER */
 #if defined(SQLITE_HAS_CODEC)
  {/* zName:     */ "hexkey",
   /* ePragTyp:  */ PragTyp_KEY,
@@ -126345,6 +130232,7 @@ static const PragmaName aPragmaName[] = {
   /* ColNames:  */ 0, 0,
   /* iArg:      */ 3 },
 #endif
+/* END SQLCIPHER */
 #if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
 #if !defined(SQLITE_OMIT_CHECK)
  {/* zName:     */ "ignore_check_constraints",
@@ -126370,7 +130258,7 @@ static const PragmaName aPragmaName[] = {
  {/* zName:     */ "index_list",
   /* ePragTyp:  */ PragTyp_INDEX_LIST,
   /* ePragFlg:  */ PragFlg_NeedSchema|PragFlg_Result1|PragFlg_SchemaOpt,
-  /* ColNames:  */ 26, 5,
+  /* ColNames:  */ 32, 5,
   /* iArg:      */ 0 },
  {/* zName:     */ "index_xinfo",
   /* ePragTyp:  */ PragTyp_INDEX_INFO,
@@ -126397,6 +130285,7 @@ static const PragmaName aPragmaName[] = {
   /* ColNames:  */ 0, 0,
   /* iArg:      */ 0 },
 #endif
+/* BEGIN SQLCIPHER */
 #if defined(SQLITE_HAS_CODEC)
  {/* zName:     */ "key",
   /* ePragTyp:  */ PragTyp_KEY,
@@ -126404,17 +130293,13 @@ static const PragmaName aPragmaName[] = {
   /* ColNames:  */ 0, 0,
   /* iArg:      */ 0 },
 #endif
+/* END SQLCIPHER */
 #if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
  {/* zName:     */ "legacy_alter_table",
   /* ePragTyp:  */ PragTyp_FLAG,
   /* ePragFlg:  */ PragFlg_Result0|PragFlg_NoColumns1,
   /* ColNames:  */ 0, 0,
   /* iArg:      */ SQLITE_LegacyAlter },
- {/* zName:     */ "legacy_file_format",
-  /* ePragTyp:  */ PragTyp_FLAG,
-  /* ePragFlg:  */ PragFlg_Result0|PragFlg_NoColumns1,
-  /* ColNames:  */ 0, 0,
-  /* iArg:      */ SQLITE_LegacyFileFmt },
 #endif
 #if !defined(SQLITE_OMIT_PAGER_PRAGMAS) && SQLITE_ENABLE_LOCKING_STYLE
  {/* zName:     */ "lock_proxy_file",
@@ -126427,7 +130312,7 @@ static const PragmaName aPragmaName[] = {
  {/* zName:     */ "lock_status",
   /* ePragTyp:  */ PragTyp_LOCK_STATUS,
   /* ePragFlg:  */ PragFlg_Result0,
-  /* ColNames:  */ 43, 2,
+  /* ColNames:  */ 47, 2,
   /* iArg:      */ 0 },
 #endif
 #if !defined(SQLITE_OMIT_PAGER_PRAGMAS)
@@ -126517,6 +130402,7 @@ static const PragmaName aPragmaName[] = {
   /* ColNames:  */ 0, 0,
   /* iArg:      */ SQLITE_RecTriggers },
 #endif
+/* BEGIN SQLCIPHER */
 #if defined(SQLITE_HAS_CODEC)
  {/* zName:     */ "rekey",
   /* ePragTyp:  */ PragTyp_KEY,
@@ -126524,6 +130410,7 @@ static const PragmaName aPragmaName[] = {
   /* ColNames:  */ 0, 0,
   /* iArg:      */ 1 },
 #endif
+/* END SQLCIPHER */
 #if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
  {/* zName:     */ "reverse_unordered_selects",
   /* ePragTyp:  */ PragTyp_FLAG,
@@ -126575,7 +130462,7 @@ static const PragmaName aPragmaName[] = {
  {/* zName:     */ "stats",
   /* ePragTyp:  */ PragTyp_STATS,
   /* ePragFlg:  */ PragFlg_NeedSchema|PragFlg_Result0|PragFlg_SchemaReq,
-  /* ColNames:  */ 21, 5,
+  /* ColNames:  */ 27, 5,
   /* iArg:      */ 0 },
 #endif
 #if !defined(SQLITE_OMIT_PAGER_PRAGMAS)
@@ -126609,6 +130496,7 @@ static const PragmaName aPragmaName[] = {
   /* ColNames:  */ 0, 0,
   /* iArg:      */ 0 },
 #endif
+/* BEGIN SQLCIPHER */
 #if defined(SQLITE_HAS_CODEC)
  {/* zName:     */ "textkey",
   /* ePragTyp:  */ PragTyp_KEY,
@@ -126621,11 +130509,19 @@ static const PragmaName aPragmaName[] = {
   /* ColNames:  */ 0, 0,
   /* iArg:      */ 5 },
 #endif
+/* END SQLCIPHER */
  {/* zName:     */ "threads",
   /* ePragTyp:  */ PragTyp_THREADS,
   /* ePragFlg:  */ PragFlg_Result0,
   /* ColNames:  */ 0, 0,
   /* iArg:      */ 0 },
+#if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
+ {/* zName:     */ "trusted_schema",
+  /* ePragTyp:  */ PragTyp_FLAG,
+  /* ePragFlg:  */ PragFlg_Result0|PragFlg_NoColumns1,
+  /* ColNames:  */ 0, 0,
+  /* iArg:      */ SQLITE_TrustedSchema },
+#endif
 #if !defined(SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS)
  {/* zName:     */ "user_version",
   /* ePragTyp:  */ PragTyp_HEADER_VALUE,
@@ -126671,7 +130567,7 @@ static const PragmaName aPragmaName[] = {
  {/* zName:     */ "wal_checkpoint",
   /* ePragTyp:  */ PragTyp_WAL_CHECKPOINT,
   /* ePragFlg:  */ PragFlg_NeedSchema,
-  /* ColNames:  */ 38, 3,
+  /* ColNames:  */ 44, 3,
   /* iArg:      */ 0 },
 #endif
 #if !defined(SQLITE_OMIT_FLAG_PRAGMAS)
@@ -126682,7 +130578,7 @@ static const PragmaName aPragmaName[] = {
   /* iArg:      */ SQLITE_WriteSchema|SQLITE_NoSchemaError },
 #endif
 };
-/* Number of pragmas: 65 on by default, 81 total. */
+/* Number of pragmas: 67 on by default, 77 total. */
 
 /************** End of pragma.h **********************************************/
 /************** Continuing where we left off in pragma.c *********************/
@@ -126953,6 +130849,55 @@ static const PragmaName *pragmaLocate(const char *zName){
 }
 
 /*
+** Create zero or more entries in the output for the SQL functions
+** defined by FuncDef p.
+*/
+static void pragmaFunclistLine(
+  Vdbe *v,               /* The prepared statement being created */
+  FuncDef *p,            /* A particular function definition */
+  int isBuiltin,         /* True if this is a built-in function */
+  int showInternFuncs    /* True if showing internal functions */
+){
+  for(; p; p=p->pNext){
+    const char *zType;
+    static const u32 mask =
+        SQLITE_DETERMINISTIC |
+        SQLITE_DIRECTONLY |
+        SQLITE_SUBTYPE |
+        SQLITE_INNOCUOUS |
+        SQLITE_FUNC_INTERNAL
+    ;
+    static const char *azEnc[] = { 0, "utf8", "utf16le", "utf16be" };
+
+    assert( SQLITE_FUNC_ENCMASK==0x3 );
+    assert( strcmp(azEnc[SQLITE_UTF8],"utf8")==0 );
+    assert( strcmp(azEnc[SQLITE_UTF16LE],"utf16le")==0 );
+    assert( strcmp(azEnc[SQLITE_UTF16BE],"utf16be")==0 );
+
+    if( p->xSFunc==0 ) continue;
+    if( (p->funcFlags & SQLITE_FUNC_INTERNAL)!=0
+     && showInternFuncs==0
+    ){
+      continue;
+    }
+    if( p->xValue!=0 ){
+      zType = "w";
+    }else if( p->xFinalize!=0 ){
+      zType = "a";
+    }else{
+      zType = "s";
+    }
+    sqlite3VdbeMultiLoad(v, 1, "sissii",
+       p->zName, isBuiltin,
+       zType, azEnc[p->funcFlags&SQLITE_FUNC_ENCMASK],
+       p->nArg,
+       (p->funcFlags & mask) ^ SQLITE_INNOCUOUS
+    );
+  }
+}
+
+
+/*
 ** Helper subroutine for PRAGMA integrity_check:
 **
 ** Generate code to output a single-column result row with a value of the
@@ -127178,7 +131123,7 @@ SQLITE_PRIVATE void sqlite3Pragma(
       ** buffer that the pager module resizes using sqlite3_realloc().
       */
       db->nextPagesize = sqlite3Atoi(zRight);
-      if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, db->nextPagesize,-1,0) ){
+      if( SQLITE_NOMEM==sqlite3BtreeSetPageSize(pBt, db->nextPagesize,0,0) ){
         sqlite3OomFault(db);
       }
     }
@@ -127234,13 +131179,19 @@ SQLITE_PRIVATE void sqlite3Pragma(
   */
   case PragTyp_PAGE_COUNT: {
     int iReg;
+    i64 x = 0;
     sqlite3CodeVerifySchema(pParse, iDb);
     iReg = ++pParse->nMem;
     if( sqlite3Tolower(zLeft[0])=='p' ){
       sqlite3VdbeAddOp2(v, OP_Pagecount, iDb, iReg);
     }else{
-      sqlite3VdbeAddOp3(v, OP_MaxPgcnt, iDb, iReg,
-                        sqlite3AbsInt32(sqlite3Atoi(zRight)));
+      if( zRight && sqlite3DecOrHexToI64(zRight,&x)==0 ){
+        if( x<0 ) x = 0;
+        else if( x>0xfffffffe ) x = 0xfffffffe;
+      }else{
+        x = 0;
+      }
+      sqlite3VdbeAddOp3(v, OP_MaxPgcnt, iDb, iReg, (int)x);
     }
     sqlite3VdbeAddOp2(v, OP_ResultRow, iReg, 1);
     break;
@@ -127761,21 +131712,29 @@ SQLITE_PRIVATE void sqlite3Pragma(
   */
   case PragTyp_TABLE_INFO: if( zRight ){
     Table *pTab;
+    sqlite3CodeVerifyNamedSchema(pParse, zDb);
     pTab = sqlite3LocateTable(pParse, LOCATE_NOERR, zRight, zDb);
     if( pTab ){
-      int iTabDb = sqlite3SchemaToIndex(db, pTab->pSchema);
       int i, k;
       int nHidden = 0;
       Column *pCol;
       Index *pPk = sqlite3PrimaryKeyIndex(pTab);
       pParse->nMem = 7;
-      sqlite3CodeVerifySchema(pParse, iTabDb);
       sqlite3ViewGetColumnNames(pParse, pTab);
       for(i=0, pCol=pTab->aCol; i<pTab->nCol; i++, pCol++){
-        int isHidden = IsHiddenColumn(pCol);
-        if( isHidden && pPragma->iArg==0 ){
-          nHidden++;
-          continue;
+        int isHidden = 0;
+        if( pCol->colFlags & COLFLAG_NOINSERT ){
+          if( pPragma->iArg==0 ){
+            nHidden++;
+            continue;
+          }
+          if( pCol->colFlags & COLFLAG_VIRTUAL ){
+            isHidden = 2;  /* GENERATED ALWAYS AS ... VIRTUAL */
+          }else if( pCol->colFlags & COLFLAG_STORED ){
+            isHidden = 3;  /* GENERATED ALWAYS AS ... STORED */
+          }else{ assert( pCol->colFlags & COLFLAG_HIDDEN );
+            isHidden = 1;  /* HIDDEN */
+          }
         }
         if( (pCol->colFlags & COLFLAG_PRIMKEY)==0 ){
           k = 0;
@@ -127784,13 +131743,13 @@ SQLITE_PRIVATE void sqlite3Pragma(
         }else{
           for(k=1; k<=pTab->nCol && pPk->aiColumn[k-1]!=i; k++){}
         }
-        assert( pCol->pDflt==0 || pCol->pDflt->op==TK_SPAN );
+        assert( pCol->pDflt==0 || pCol->pDflt->op==TK_SPAN || isHidden>=2 );
         sqlite3VdbeMultiLoad(v, 1, pPragma->iArg ? "issisii" : "issisi",
                i-nHidden,
                pCol->zName,
                sqlite3ColumnType(pCol,""),
                pCol->notNull ? 1 : 0,
-               pCol->pDflt ? pCol->pDflt->u.zToken : 0,
+               pCol->pDflt && isHidden<2 ? pCol->pDflt->u.zToken : 0,
                k,
                isHidden);
       }
@@ -127922,16 +131881,16 @@ SQLITE_PRIVATE void sqlite3Pragma(
     int i;
     HashElem *j;
     FuncDef *p;
-    pParse->nMem = 2;
+    int showInternFunc = (db->mDbFlags & DBFLAG_InternalFunc)!=0;
+    pParse->nMem = 6;
     for(i=0; i<SQLITE_FUNC_HASH_SZ; i++){
       for(p=sqlite3BuiltinFunctions.a[i]; p; p=p->u.pHash ){
-        if( p->funcFlags & SQLITE_FUNC_INTERNAL ) continue;
-        sqlite3VdbeMultiLoad(v, 1, "si", p->zName, 1);
+        pragmaFunclistLine(v, p, 1, showInternFunc);
       }
     }
     for(j=sqliteHashFirst(&db->aFunc); j; j=sqliteHashNext(j)){
       p = (FuncDef*)sqliteHashData(j);
-      sqlite3VdbeMultiLoad(v, 1, "si", p->zName, 0);
+      pragmaFunclistLine(v, p, 0, showInternFunc);
     }
   }
   break;
@@ -128017,7 +131976,6 @@ SQLITE_PRIVATE void sqlite3Pragma(
     regRow = ++pParse->nMem;
     k = sqliteHashFirst(&db->aDb[iDb].pSchema->tblHash);
     while( k ){
-      int iTabDb;
       if( zRight ){
         pTab = sqlite3LocateTable(pParse, 0, zRight, zDb);
         k = 0;
@@ -128026,23 +131984,24 @@ SQLITE_PRIVATE void sqlite3Pragma(
         k = sqliteHashNext(k);
       }
       if( pTab==0 || pTab->pFKey==0 ) continue;
-      iTabDb = sqlite3SchemaToIndex(db, pTab->pSchema);
-      sqlite3CodeVerifySchema(pParse, iTabDb);
-      sqlite3TableLock(pParse, iTabDb, pTab->tnum, 0, pTab->zName);
+      iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
+      zDb = db->aDb[iDb].zDbSName;
+      sqlite3CodeVerifySchema(pParse, iDb);
+      sqlite3TableLock(pParse, iDb, pTab->tnum, 0, pTab->zName);
       if( pTab->nCol+regRow>pParse->nMem ) pParse->nMem = pTab->nCol + regRow;
-      sqlite3OpenTable(pParse, 0, iTabDb, pTab, OP_OpenRead);
+      sqlite3OpenTable(pParse, 0, iDb, pTab, OP_OpenRead);
       sqlite3VdbeLoadString(v, regResult, pTab->zName);
       for(i=1, pFK=pTab->pFKey; pFK; i++, pFK=pFK->pNextFrom){
         pParent = sqlite3FindTable(db, pFK->zTo, zDb);
         if( pParent==0 ) continue;
         pIdx = 0;
-        sqlite3TableLock(pParse, iTabDb, pParent->tnum, 0, pParent->zName);
+        sqlite3TableLock(pParse, iDb, pParent->tnum, 0, pParent->zName);
         x = sqlite3FkLocateIndex(pParse, pParent, pFK, &pIdx, 0);
         if( x==0 ){
           if( pIdx==0 ){
-            sqlite3OpenTable(pParse, i, iTabDb, pParent, OP_OpenRead);
+            sqlite3OpenTable(pParse, i, iDb, pParent, OP_OpenRead);
           }else{
-            sqlite3VdbeAddOp3(v, OP_OpenRead, i, pIdx->tnum, iTabDb);
+            sqlite3VdbeAddOp3(v, OP_OpenRead, i, pIdx->tnum, iDb);
             sqlite3VdbeSetP4KeyInfo(pParse, pIdx);
           }
         }else{
@@ -128135,9 +132094,22 @@ SQLITE_PRIVATE void sqlite3Pragma(
   ** integrity_check designed to detect most database corruption
   ** without the overhead of cross-checking indexes.  Quick_check
   ** is linear time wherease integrity_check is O(NlogN).
+  **
+  ** The maximum nubmer of errors is 100 by default.  A different default
+  ** can be specified using a numeric parameter N.
+  **
+  ** Or, the parameter N can be the name of a table.  In that case, only
+  ** the one table named is verified.  The freelist is only verified if
+  ** the named table is "sqlite_schema" (or one of its aliases).
+  **
+  ** All schemas are checked by default.  To check just a single
+  ** schema, use the form:
+  **
+  **      PRAGMA schema.integrity_check;
   */
   case PragTyp_INTEGRITY_CHECK: {
     int i, j, addr, mxErr;
+    Table *pObjTab = 0;     /* Check only this one table, if not NULL */
 
     int isQuick = (sqlite3Tolower(zLeft[0])=='q');
 
@@ -128160,9 +132132,13 @@ SQLITE_PRIVATE void sqlite3Pragma(
     /* Set the maximum error count */
     mxErr = SQLITE_INTEGRITY_CHECK_ERROR_MAX;
     if( zRight ){
-      sqlite3GetInt32(zRight, &mxErr);
-      if( mxErr<=0 ){
-        mxErr = SQLITE_INTEGRITY_CHECK_ERROR_MAX;
+      if( sqlite3GetInt32(zRight, &mxErr) ){
+        if( mxErr<=0 ){
+          mxErr = SQLITE_INTEGRITY_CHECK_ERROR_MAX;
+        }
+      }else{
+        pObjTab = sqlite3LocateTable(pParse, 0, zRight,
+                      iDb>=0 ? db->aDb[iDb].zDbSName : 0);
       }
     }
     sqlite3VdbeAddOp2(v, OP_Integer, mxErr-1, 1); /* reg[1] holds errors left */
@@ -128191,15 +132167,21 @@ SQLITE_PRIVATE void sqlite3Pragma(
         Table *pTab = sqliteHashData(x);  /* Current table */
         Index *pIdx;                      /* An index on pTab */
         int nIdx;                         /* Number of indexes on pTab */
+        if( pObjTab && pObjTab!=pTab ) continue;
         if( HasRowid(pTab) ) cnt++;
         for(nIdx=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, nIdx++){ cnt++; }
         if( nIdx>mxIdx ) mxIdx = nIdx;
       }
+      if( cnt==0 ) continue;
+      if( pObjTab ) cnt++;
       aRoot = sqlite3DbMallocRawNN(db, sizeof(int)*(cnt+1));
       if( aRoot==0 ) break;
-      for(cnt=0, x=sqliteHashFirst(pTbls); x; x=sqliteHashNext(x)){
+      cnt = 0;
+      if( pObjTab ) aRoot[++cnt] = 0;
+      for(x=sqliteHashFirst(pTbls); x; x=sqliteHashNext(x)){
         Table *pTab = sqliteHashData(x);
         Index *pIdx;
+        if( pObjTab && pObjTab!=pTab ) continue;
         if( HasRowid(pTab) ) aRoot[++cnt] = pTab->tnum;
         for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
           aRoot[++cnt] = pIdx->tnum;
@@ -128233,6 +132215,7 @@ SQLITE_PRIVATE void sqlite3Pragma(
         int r1 = -1;
 
         if( pTab->tnum<1 ) continue;  /* Skip VIEWs or VIRTUAL TABLEs */
+        if( pObjTab && pObjTab!=pTab ) continue;
         pPk = HasRowid(pTab) ? 0 : sqlite3PrimaryKeyIndex(pTab);
         sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenRead, 0,
                                    1, 0, &iDataCur, &iIdxCur);
@@ -128249,7 +132232,7 @@ SQLITE_PRIVATE void sqlite3Pragma(
         loopTop = sqlite3VdbeAddOp2(v, OP_AddImm, 7, 1);
         if( !isQuick ){
           /* Sanity check on record header decoding */
-          sqlite3VdbeAddOp3(v, OP_Column, iDataCur, pTab->nCol-1, 3);
+          sqlite3VdbeAddOp3(v, OP_Column, iDataCur, pTab->nNVCol-1,3);
           sqlite3VdbeChangeP5(v, OPFLAG_TYPEOFARG);
         }
         /* Verify that all NOT NULL columns really are NOT NULL */
@@ -128259,7 +132242,9 @@ SQLITE_PRIVATE void sqlite3Pragma(
           if( j==pTab->iPKey ) continue;
           if( pTab->aCol[j].notNull==0 ) continue;
           sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, j, 3);
-          sqlite3VdbeChangeP5(v, OPFLAG_TYPEOFARG);
+          if( sqlite3VdbeGetOp(v,-1)->opcode==OP_Column ){
+            sqlite3VdbeChangeP5(v, OPFLAG_TYPEOFARG);
+          }
           jmp2 = sqlite3VdbeAddOp1(v, OP_NotNull, 3); VdbeCoverage(v);
           zErr = sqlite3MPrintf(db, "NULL value in %s.%s", pTab->zName,
                               pTab->aCol[j].zName);
@@ -128341,7 +132326,6 @@ SQLITE_PRIVATE void sqlite3Pragma(
         }
         sqlite3VdbeAddOp2(v, OP_Next, iDataCur, loopTop); VdbeCoverage(v);
         sqlite3VdbeJumpHere(v, loopTop-1);
-#ifndef SQLITE_OMIT_BTREECOUNT
         if( !isQuick ){
           sqlite3VdbeLoadString(v, 2, "wrong # of entries in index ");
           for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){
@@ -128355,7 +132339,6 @@ SQLITE_PRIVATE void sqlite3Pragma(
             sqlite3VdbeJumpHere(v, addr);
           }
         }
-#endif /* SQLITE_OMIT_BTREECOUNT */
       }
     }
     {
@@ -128436,14 +132419,12 @@ SQLITE_PRIVATE void sqlite3Pragma(
       ** will be overwritten when the schema is next loaded. If it does not
       ** already exists, it will be created to use the new encoding value.
       */
-      if(
-        !(DbHasProperty(db, 0, DB_SchemaLoaded)) ||
-        DbHasProperty(db, 0, DB_Empty)
-      ){
+      if( (db->mDbFlags & DBFLAG_EncodingFixed)==0 ){
         for(pEnc=&encnames[0]; pEnc->zName; pEnc++){
           if( 0==sqlite3StrICmp(zRight, pEnc->zName) ){
-            SCHEMA_ENC(db) = ENC(db) =
-                pEnc->enc ? pEnc->enc : SQLITE_UTF16NATIVE;
+            u8 enc = pEnc->enc ? pEnc->enc : SQLITE_UTF16NATIVE;
+            SCHEMA_ENC(db) = enc;
+            sqlite3SetTextEncoding(db, enc);
             break;
           }
         }
@@ -128506,6 +132487,7 @@ SQLITE_PRIVATE void sqlite3Pragma(
       aOp[1].p1 = iDb;
       aOp[1].p2 = iCookie;
       aOp[1].p3 = sqlite3Atoi(zRight);
+      aOp[1].p5 = 1;
     }else{
       /* Read the specified cookie value */
       static const VdbeOpList readCookie[] = {
@@ -128753,6 +132735,27 @@ SQLITE_PRIVATE void sqlite3Pragma(
   }
 
   /*
+  **   PRAGMA hard_heap_limit
+  **   PRAGMA hard_heap_limit = N
+  **
+  ** Invoke sqlite3_hard_heap_limit64() to query or set the hard heap
+  ** limit.  The hard heap limit can be activated or lowered by this
+  ** pragma, but not raised or deactivated.  Only the
+  ** sqlite3_hard_heap_limit64() C-language API can raise or deactivate
+  ** the hard heap limit.  This allows an application to set a heap limit
+  ** constraint that cannot be relaxed by an untrusted SQL script.
+  */
+  case PragTyp_HARD_HEAP_LIMIT: {
+    sqlite3_int64 N;
+    if( zRight && sqlite3DecOrHexToI64(zRight, &N)==SQLITE_OK ){
+      sqlite3_int64 iPrior = sqlite3_hard_heap_limit64(-1);
+      if( N>0 && (iPrior==0 || iPrior>N) ) sqlite3_hard_heap_limit64(N);
+    }
+    returnSingleInt(v, sqlite3_hard_heap_limit64(-1));
+    break;
+  }
+
+  /*
   **   PRAGMA threads
   **   PRAGMA threads = N
   **
@@ -128771,6 +132774,25 @@ SQLITE_PRIVATE void sqlite3Pragma(
     break;
   }
 
+  /*
+  **   PRAGMA analysis_limit
+  **   PRAGMA analysis_limit = N
+  **
+  ** Configure the maximum number of rows that ANALYZE will examine
+  ** in each index that it looks at.  Return the new limit.
+  */
+  case PragTyp_ANALYSIS_LIMIT: {
+    sqlite3_int64 N;
+    if( zRight
+     && sqlite3DecOrHexToI64(zRight, &N)==SQLITE_OK
+     && N>=0
+    ){
+      db->nAnalysisLimit = (int)(N&0x7fffffff);
+    }
+    returnSingleInt(v, db->nAnalysisLimit);
+    break;
+  }
+
 #if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
   /*
   ** Report the current state of file logs for all databases
@@ -128799,6 +132821,7 @@ SQLITE_PRIVATE void sqlite3Pragma(
   }
 #endif
 
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
   /* Pragma        iArg
   ** ----------   ------
@@ -128817,7 +132840,7 @@ SQLITE_PRIVATE void sqlite3Pragma(
       if( pPragma->iArg==2 || pPragma->iArg==3 ){
         u8 iByte;
         int i;
-        for(i=0, iByte=0; i<(int)(sizeof(zBuf)*2) && sqlite3Isxdigit(zRight[i]); i++){
+        for(i=0, iByte=0; i<sizeof(zBuf)*2 && sqlite3Isxdigit(zRight[i]); i++){
           iByte = (iByte<<4) + sqlite3HexToInt(zRight[i]);
           if( (i&1)!=0 ) zBuf[i/2] = iByte;
         }
@@ -128840,18 +132863,12 @@ SQLITE_PRIVATE void sqlite3Pragma(
     break;
   }
 #endif
-#if defined(SQLITE_HAS_CODEC) || defined(SQLITE_ENABLE_CEROD)
+/* END SQLCIPHER */
+#if defined(SQLITE_ENABLE_CEROD)
   case PragTyp_ACTIVATE_EXTENSIONS: if( zRight ){
-#ifdef SQLITE_HAS_CODEC
-    if( sqlite3StrNICmp(zRight, "see-", 4)==0 ){
-      sqlite3_activate_see(&zRight[4]);
-    }
-#endif
-#ifdef SQLITE_ENABLE_CEROD
     if( sqlite3StrNICmp(zRight, "cerod-", 6)==0 ){
       sqlite3_activate_cerod(&zRight[6]);
     }
-#endif
   }
   break;
 #endif
@@ -129245,6 +133262,18 @@ SQLITE_PRIVATE int sqlite3IndexHasDuplicateRootPage(Index *pIndex){
   return 0;
 }
 
+/* forward declaration */
+static int sqlite3Prepare(
+  sqlite3 *db,              /* Database handle. */
+  const char *zSql,         /* UTF-8 encoded SQL statement. */
+  int nBytes,               /* Length of zSql in bytes. */
+  u32 prepFlags,            /* Zero or more SQLITE_PREPARE_* flags */
+  Vdbe *pReprepare,         /* VM being reprepared */
+  sqlite3_stmt **ppStmt,    /* OUT: A pointer to the prepared statement */
+  const char **pzTail       /* OUT: End of parsed string */
+);
+
+
 /*
 ** This is the callback routine for the code that initializes the
 ** database.  See sqlite3Init() below for additional information.
@@ -129267,7 +133296,7 @@ SQLITE_PRIVATE int sqlite3InitCallback(void *pInit, int argc, char **argv, char
   assert( argc==5 );
   UNUSED_PARAMETER2(NotUsed, argc);
   assert( sqlite3_mutex_held(db->mutex) );
-  DbClearProperty(db, iDb, DB_Empty);
+  db->mDbFlags |= DBFLAG_EncodingFixed;
   pData->nInitRow++;
   if( db->mallocFailed ){
     corruptSchema(pData, argv[1], 0);
@@ -129291,10 +133320,17 @@ SQLITE_PRIVATE int sqlite3InitCallback(void *pInit, int argc, char **argv, char
 
     assert( db->init.busy );
     db->init.iDb = iDb;
-    db->init.newTnum = sqlite3Atoi(argv[3]);
+    if( sqlite3GetUInt32(argv[3], &db->init.newTnum)==0
+     || (db->init.newTnum>pData->mxPage && pData->mxPage>0)
+    ){
+      if( sqlite3Config.bExtraSchemaChecks ){
+        corruptSchema(pData, argv[1], "invalid rootpage");
+      }
+    }
     db->init.orphanTrigger = 0;
     db->init.azInit = argv;
-    TESTONLY(rcp = ) sqlite3_prepare(db, argv[4], -1, &pStmt, 0);
+    pStmt = 0;
+    TESTONLY(rcp = ) sqlite3Prepare(db, argv[4], -1, 0, 0, &pStmt, 0);
     rc = db->errCode;
     assert( (rc&0xFF)==(rcp&0xFF) );
     db->init.iDb = saved_iDb;
@@ -129323,12 +133359,17 @@ SQLITE_PRIVATE int sqlite3InitCallback(void *pInit, int argc, char **argv, char
     */
     Index *pIndex;
     pIndex = sqlite3FindIndex(db, argv[1], db->aDb[iDb].zDbSName);
-    if( pIndex==0
-     || sqlite3GetInt32(argv[3],&pIndex->tnum)==0
+    if( pIndex==0 ){
+      corruptSchema(pData, argv[1], "orphan index");
+    }else
+    if( sqlite3GetUInt32(argv[3],&pIndex->tnum)==0
      || pIndex->tnum<2
+     || pIndex->tnum>pData->mxPage
      || sqlite3IndexHasDuplicateRootPage(pIndex)
     ){
-      corruptSchema(pData, argv[1], pIndex?"invalid rootpage":"orphan index");
+      if( sqlite3Config.bExtraSchemaChecks ){
+        corruptSchema(pData, argv[1], "invalid rootpage");
+      }
     }
   }
   return 0;
@@ -129352,8 +133393,9 @@ SQLITE_PRIVATE int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg, u32 mFl
   char const *azArg[6];
   int meta[5];
   InitData initData;
-  const char *zMasterName;
+  const char *zSchemaTabName;
   int openedTransaction = 0;
+  int mask = ((db->mDbFlags & DBFLAG_EncodingFixed) | ~DBFLAG_EncodingFixed);
 
   assert( (db->mDbFlags & DBFLAG_SchemaKnownOk)==0 );
   assert( iDb>=0 && iDb<db->nDb );
@@ -129363,13 +133405,13 @@ SQLITE_PRIVATE int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg, u32 mFl
 
   db->init.busy = 1;
 
-  /* Construct the in-memory representation schema tables (sqlite_master or
-  ** sqlite_temp_master) by invoking the parser directly.  The appropriate
+  /* Construct the in-memory representation schema tables (sqlite_schema or
+  ** sqlite_temp_schema) by invoking the parser directly.  The appropriate
   ** table name will be inserted automatically by the parser so we can just
   ** use the abbreviation "x" here.  The parser will also automatically tag
   ** the schema table as read-only. */
   azArg[0] = "table";
-  azArg[1] = zMasterName = SCHEMA_TABLE(iDb);
+  azArg[1] = zSchemaTabName = SCHEMA_TABLE(iDb);
   azArg[2] = azArg[1];
   azArg[3] = "1";
   azArg[4] = "CREATE TABLE x(type text,name text,tbl_name text,"
@@ -129381,7 +133423,9 @@ SQLITE_PRIVATE int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg, u32 mFl
   initData.pzErrMsg = pzErrMsg;
   initData.mInitFlags = mFlags;
   initData.nInitRow = 0;
+  initData.mxPage = 0;
   sqlite3InitCallback(&initData, 5, (char **)azArg, 0);
+  db->mDbFlags &= mask;
   if( initData.rc ){
     rc = initData.rc;
     goto error_out;
@@ -129441,27 +133485,25 @@ SQLITE_PRIVATE int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg, u32 mFl
   ** as sqlite3.enc.
   */
   if( meta[BTREE_TEXT_ENCODING-1] ){  /* text encoding */
-    if( iDb==0 ){
-#ifndef SQLITE_OMIT_UTF16
+    if( iDb==0 && (db->mDbFlags & DBFLAG_EncodingFixed)==0 ){
       u8 encoding;
+#ifndef SQLITE_OMIT_UTF16
       /* If opening the main database, set ENC(db). */
       encoding = (u8)meta[BTREE_TEXT_ENCODING-1] & 3;
       if( encoding==0 ) encoding = SQLITE_UTF8;
-      ENC(db) = encoding;
 #else
-      ENC(db) = SQLITE_UTF8;
+      encoding = SQLITE_UTF8;
 #endif
+      sqlite3SetTextEncoding(db, encoding);
     }else{
       /* If opening an attached database, the encoding much match ENC(db) */
-      if( meta[BTREE_TEXT_ENCODING-1]!=ENC(db) ){
+      if( (meta[BTREE_TEXT_ENCODING-1] & 3)!=ENC(db) ){
         sqlite3SetString(pzErrMsg, db, "attached databases must use the same"
             " text encoding as main database");
         rc = SQLITE_ERROR;
         goto initone_error_out;
       }
     }
-  }else{
-    DbSetProperty(db, iDb, DB_Empty);
   }
   pDb->pSchema->enc = ENC(db);
 
@@ -129504,11 +133546,12 @@ SQLITE_PRIVATE int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg, u32 mFl
   /* Read the schema information out of the schema tables
   */
   assert( db->init.busy );
+  initData.mxPage = sqlite3BtreeLastPage(pDb->pBt);
   {
     char *zSql;
     zSql = sqlite3MPrintf(db,
         "SELECT*FROM\"%w\".%s ORDER BY rowid",
-        db->aDb[iDb].zDbSName, zMasterName);
+        db->aDb[iDb].zDbSName, zSchemaTabName);
 #ifndef SQLITE_OMIT_AUTHORIZATION
     {
       sqlite3_xauth xAuth;
@@ -129538,7 +133581,7 @@ SQLITE_PRIVATE int sqlite3InitOne(sqlite3 *db, int iDb, char **pzErrMsg, u32 mFl
     ** current sqlite3_prepare() operation will fail, but the following one
     ** will attempt to compile the supplied statement against whatever subset
     ** of the schema was loaded before the error occurred. The primary
-    ** purpose of this is to allow access to the sqlite_master table
+    ** purpose of this is to allow access to the sqlite_schema table
     ** even when its contents have been corrupted.
     */
     DbSetProperty(db, iDb, DB_SchemaLoaded);
@@ -129573,8 +133616,7 @@ error_out:
 ** error occurs, write an error message into *pzErrMsg.
 **
 ** After a database is initialized, the DB_SchemaLoaded bit is set
-** bit is set in the flags field of the Db structure. If the database
-** file was of zero-length, then the DB_Empty flag is also set.
+** bit is set in the flags field of the Db structure.
 */
 SQLITE_PRIVATE int sqlite3Init(sqlite3 *db, char **pzErrMsg){
   int i, rc;
@@ -129680,17 +133722,18 @@ static void schemaIsValid(Parse *pParse){
 ** attached database is returned.
 */
 SQLITE_PRIVATE int sqlite3SchemaToIndex(sqlite3 *db, Schema *pSchema){
-  int i = -1000000;
+  int i = -32768;
 
-  /* If pSchema is NULL, then return -1000000. This happens when code in
+  /* If pSchema is NULL, then return -32768. This happens when code in
   ** expr.c is trying to resolve a reference to a transient table (i.e. one
   ** created by a sub-select). In this case the return value of this
   ** function should never be used.
   **
-  ** We return -1000000 instead of the more usual -1 simply because using
-  ** -1000000 as the incorrect index into db->aDb[] is much
+  ** We return -32768 instead of the more usual -1 simply because using
+  ** -32768 as the incorrect index into db->aDb[] is much
   ** more likely to cause a segfault than -1 (of course there are assert()
-  ** statements too, but it never hurts to play the odds).
+  ** statements too, but it never hurts to play the odds) and
+  ** -32768 will still fit into a 16-bit signed integer.
   */
   assert( sqlite3_mutex_held(db->mutex) );
   if( pSchema ){
@@ -129706,15 +133749,31 @@ SQLITE_PRIVATE int sqlite3SchemaToIndex(sqlite3 *db, Schema *pSchema){
 }
 
 /*
+** Deallocate a single AggInfo object
+*/
+static void agginfoFree(sqlite3 *db, AggInfo *p){
+  sqlite3DbFree(db, p->aCol);
+  sqlite3DbFree(db, p->aFunc);
+  sqlite3DbFree(db, p);
+}
+
+/*
 ** Free all memory allocations in the pParse object
 */
 SQLITE_PRIVATE void sqlite3ParserReset(Parse *pParse){
   sqlite3 *db = pParse->db;
+  AggInfo *pThis = pParse->pAggList;
+  while( pThis ){
+    AggInfo *pNext = pThis->pNext;
+    agginfoFree(db, pThis);
+    pThis = pNext;
+  }
   sqlite3DbFree(db, pParse->aLabel);
   sqlite3ExprListDelete(db, pParse->pConstExpr);
   if( db ){
     assert( db->lookaside.bDisable >= pParse->disableLookaside );
     db->lookaside.bDisable -= pParse->disableLookaside;
+    db->lookaside.sz = db->lookaside.bDisable ? 0 : db->lookaside.szTrue;
   }
   pParse->disableLookaside = 0;
 }
@@ -129748,7 +133807,7 @@ static int sqlite3Prepare(
   */
   if( prepFlags & SQLITE_PREPARE_PERSISTENT ){
     sParse.disableLookaside++;
-    db->lookaside.bDisable++;
+    DisableLookaside;
   }
   sParse.disableVtab = (prepFlags & SQLITE_PREPARE_NO_VTAB)!=0;
 
@@ -129775,16 +133834,18 @@ static int sqlite3Prepare(
   ** but it does *not* override schema lock detection, so this all still
   ** works even if READ_UNCOMMITTED is set.
   */
-  for(i=0; i<db->nDb; i++) {
-    Btree *pBt = db->aDb[i].pBt;
-    if( pBt ){
-      assert( sqlite3BtreeHoldsMutex(pBt) );
-      rc = sqlite3BtreeSchemaLocked(pBt);
-      if( rc ){
-        const char *zDb = db->aDb[i].zDbSName;
-        sqlite3ErrorWithMsg(db, rc, "database schema is locked: %s", zDb);
-        testcase( db->flags & SQLITE_ReadUncommit );
-        goto end_prepare;
+  if( !db->noSharedCache ){
+    for(i=0; i<db->nDb; i++) {
+      Btree *pBt = db->aDb[i].pBt;
+      if( pBt ){
+        assert( sqlite3BtreeHoldsMutex(pBt) );
+        rc = sqlite3BtreeSchemaLocked(pBt);
+        if( rc ){
+          const char *zDb = db->aDb[i].zDbSName;
+          sqlite3ErrorWithMsg(db, rc, "database schema is locked: %s", zDb);
+          testcase( db->flags & SQLITE_ReadUncommit );
+          goto end_prepare;
+        }
       }
     }
   }
@@ -129815,48 +133876,24 @@ static int sqlite3Prepare(
   }
   assert( 0==sParse.nQueryLoop );
 
-  if( sParse.rc==SQLITE_DONE ) sParse.rc = SQLITE_OK;
+  if( sParse.rc==SQLITE_DONE ){
+    sParse.rc = SQLITE_OK;
+  }
   if( sParse.checkSchema ){
     schemaIsValid(&sParse);
   }
-  if( db->mallocFailed ){
-    sParse.rc = SQLITE_NOMEM_BKPT;
-  }
   if( pzTail ){
     *pzTail = sParse.zTail;
   }
-  rc = sParse.rc;
-
-#ifndef SQLITE_OMIT_EXPLAIN
-  /* Justification for the ALWAYS(): The only way for rc to be SQLITE_OK and
-  ** sParse.pVdbe to be NULL is if the input SQL is an empty string, but in
-  ** that case, sParse.explain will be false. */
-  if( sParse.explain && rc==SQLITE_OK && ALWAYS(sParse.pVdbe) ){
-    static const char * const azColName[] = {
-       "addr", "opcode", "p1", "p2", "p3", "p4", "p5", "comment",
-       "id", "parent", "notused", "detail"
-    };
-    int iFirst, mx;
-    if( sParse.explain==2 ){
-      sqlite3VdbeSetNumCols(sParse.pVdbe, 4);
-      iFirst = 8;
-      mx = 12;
-    }else{
-      sqlite3VdbeSetNumCols(sParse.pVdbe, 8);
-      iFirst = 0;
-      mx = 8;
-    }
-    for(i=iFirst; i<mx; i++){
-      sqlite3VdbeSetColName(sParse.pVdbe, i-iFirst, COLNAME_NAME,
-                            azColName[i], SQLITE_STATIC);
-    }
-  }
-#endif
 
   if( db->init.busy==0 ){
     sqlite3VdbeSetSql(sParse.pVdbe, zSql, (int)(sParse.zTail-zSql), prepFlags);
   }
-  if( rc!=SQLITE_OK || db->mallocFailed ){
+  if( db->mallocFailed ){
+    sParse.rc = SQLITE_NOMEM_BKPT;
+  }
+  rc = sParse.rc;
+  if( rc!=SQLITE_OK ){
     if( sParse.pVdbe ) sqlite3VdbeFinalize(sParse.pVdbe);
     assert(!(*ppStmt));
   }else{
@@ -129924,7 +133961,7 @@ static int sqlite3LockAndPrepare(
 **
 ** If the statement is successfully recompiled, return SQLITE_OK. Otherwise,
 ** if the statement cannot be recompiled because another connection has
-** locked the sqlite3_master table, return SQLITE_LOCKED. If any other error
+** locked the sqlite3_schema table, return SQLITE_LOCKED. If any other error
 ** occurs, return SQLITE_SCHEMA.
 */
 SQLITE_PRIVATE int sqlite3Reprepare(Vdbe *p){
@@ -130143,20 +134180,6 @@ SQLITE_API int sqlite3_prepare16_v3(
 /* #include "sqliteInt.h" */
 
 /*
-** Trace output macros
-*/
-#if SELECTTRACE_ENABLED
-/***/ int sqlite3SelectTrace = 0;
-# define SELECTTRACE(K,P,S,X)  \
-  if(sqlite3SelectTrace&(K))   \
-    sqlite3DebugPrintf("%u/%d/%p: ",(S)->selId,(P)->addrExplain,(S)),\
-    sqlite3DebugPrintf X
-#else
-# define SELECTTRACE(K,P,S,X)
-#endif
-
-
-/*
 ** An instance of the following object is used to record information about
 ** how to process the DISTINCT keyword, to simplify passing that information
 ** into the selectInnerLoop() routine.
@@ -130212,7 +134235,10 @@ struct SortCtx {
 
 /*
 ** Delete all the content of a Select structure.  Deallocate the structure
-** itself only if bFree is true.
+** itself depending on the value of bFree
+**
+** If bFree==1, call sqlite3DbFree() on the p object.
+** If bFree==0, Leave the first Select object unfreed
 */
 static void clearSelect(sqlite3 *db, Select *p, int bFree){
   while( p ){
@@ -130228,7 +134254,6 @@ static void clearSelect(sqlite3 *db, Select *p, int bFree){
     if( OK_IF_ALWAYS_TRUE(p->pWinDefn) ){
       sqlite3WindowListDelete(db, p->pWinDefn);
     }
-    assert( p->pWin==0 );
 #endif
     if( OK_IF_ALWAYS_TRUE(p->pWith) ) sqlite3WithDelete(db, p->pWith);
     if( bFree ) sqlite3DbFreeNN(db, p);
@@ -130243,6 +134268,7 @@ static void clearSelect(sqlite3 *db, Select *p, int bFree){
 SQLITE_PRIVATE void sqlite3SelectDestInit(SelectDest *pDest, int eDest, int iParm){
   pDest->eDest = (u8)eDest;
   pDest->iSDParm = iParm;
+  pDest->iSDParm2 = 0;
   pDest->zAffSdst = 0;
   pDest->iSdst = 0;
   pDest->nSdst = 0;
@@ -130264,9 +134290,9 @@ SQLITE_PRIVATE Select *sqlite3SelectNew(
   u32 selFlags,         /* Flag parameters, such as SF_Distinct */
   Expr *pLimit          /* LIMIT value.  NULL means not used */
 ){
-  Select *pNew;
+  Select *pNew, *pAllocated;
   Select standin;
-  pNew = sqlite3DbMallocRawNN(pParse->db, sizeof(*pNew) );
+  pAllocated = pNew = sqlite3DbMallocRawNN(pParse->db, sizeof(*pNew) );
   if( pNew==0 ){
     assert( pParse->db->mallocFailed );
     pNew = &standin;
@@ -130300,12 +134326,11 @@ SQLITE_PRIVATE Select *sqlite3SelectNew(
 #endif
   if( pParse->db->mallocFailed ) {
     clearSelect(pParse->db, pNew, pNew!=&standin);
-    pNew = 0;
+    pAllocated = 0;
   }else{
     assert( pNew->pSrc!=0 || pParse->nErr>0 );
   }
-  assert( pNew!=&standin );
-  return pNew;
+  return pAllocated;
 }
 
 
@@ -130404,8 +134429,10 @@ SQLITE_PRIVATE int sqlite3JoinType(Parse *pParse, Token *pA, Token *pB, Token *p
 */
 static int columnIndex(Table *pTab, const char *zCol){
   int i;
-  for(i=0; i<pTab->nCol; i++){
-    if( sqlite3StrICmp(pTab->aCol[i].zName, zCol)==0 ) return i;
+  u8 h = sqlite3StrIHash(zCol);
+  Column *pCol;
+  for(pCol=pTab->aCol, i=0; i<pTab->nCol; pCol++, i++){
+    if( pCol->hName==h && sqlite3StrICmp(pCol->zName, zCol)==0 ) return i;
   }
   return -1;
 }
@@ -130424,7 +134451,8 @@ static int tableAndColumnIndex(
   int N,               /* Number of tables in pSrc->a[] to search */
   const char *zCol,    /* Name of the column we are looking for */
   int *piTab,          /* Write index of pSrc->a[] here */
-  int *piCol           /* Write index of pSrc->a[*piTab].pTab->aCol[] here */
+  int *piCol,          /* Write index of pSrc->a[*piTab].pTab->aCol[] here */
+  int bIgnoreHidden    /* True to ignore hidden columns */
 ){
   int i;               /* For looping over tables in pSrc */
   int iCol;            /* Index of column matching zCol */
@@ -130432,7 +134460,9 @@ static int tableAndColumnIndex(
   assert( (piTab==0)==(piCol==0) );  /* Both or neither are NULL */
   for(i=0; i<N; i++){
     iCol = columnIndex(pSrc->a[i].pTab, zCol);
-    if( iCol>=0 ){
+    if( iCol>=0
+     && (bIgnoreHidden==0 || IsHiddenColumn(&pSrc->a[i].pTab->aCol[iCol])==0)
+    ){
       if( piTab ){
         *piTab = i;
         *piCol = iCol;
@@ -130513,7 +134543,7 @@ static void addWhereTerm(
 ** after the t1 loop and rows with t1.x!=5 will never appear in
 ** the output, which is incorrect.
 */
-static void setJoinExpr(Expr *p, int iTable){
+SQLITE_PRIVATE void sqlite3SetJoinExpr(Expr *p, int iTable){
   while( p ){
     ExprSetProperty(p, EP_FromJoin);
     assert( !ExprHasProperty(p, EP_TokenOnly|EP_Reduced) );
@@ -130522,15 +134552,15 @@ static void setJoinExpr(Expr *p, int iTable){
     if( p->op==TK_FUNCTION && p->x.pList ){
       int i;
       for(i=0; i<p->x.pList->nExpr; i++){
-        setJoinExpr(p->x.pList->a[i].pExpr, iTable);
+        sqlite3SetJoinExpr(p->x.pList->a[i].pExpr, iTable);
       }
     }
-    setJoinExpr(p->pLeft, iTable);
+    sqlite3SetJoinExpr(p->pLeft, iTable);
     p = p->pRight;
   }
 }
 
-/* Undo the work of setJoinExpr().  In the expression tree p, convert every
+/* Undo the work of sqlite3SetJoinExpr(). In the expression p, convert every
 ** term that is marked with EP_FromJoin and iRightJoinTable==iTable into
 ** an ordinary term that omits the EP_FromJoin mark.
 **
@@ -130597,10 +134627,11 @@ static int sqliteProcessJoin(Parse *pParse, Select *p){
         int iLeft;     /* Matching left table */
         int iLeftCol;  /* Matching column in the left table */
 
+        if( IsHiddenColumn(&pRightTab->aCol[j]) ) continue;
         zName = pRightTab->aCol[j].zName;
-        if( tableAndColumnIndex(pSrc, i+1, zName, &iLeft, &iLeftCol) ){
+        if( tableAndColumnIndex(pSrc, i+1, zName, &iLeft, &iLeftCol, 1) ){
           addWhereTerm(pParse, pSrc, iLeft, iLeftCol, i+1, j,
-                       isOuter, &p->pWhere);
+                isOuter, &p->pWhere);
         }
       }
     }
@@ -130617,7 +134648,7 @@ static int sqliteProcessJoin(Parse *pParse, Select *p){
     ** an AND operator.
     */
     if( pRight->pOn ){
-      if( isOuter ) setJoinExpr(pRight->pOn, pRight->iCursor);
+      if( isOuter ) sqlite3SetJoinExpr(pRight->pOn, pRight->iCursor);
       p->pWhere = sqlite3ExprAnd(pParse, p->pWhere, pRight->pOn);
       pRight->pOn = 0;
     }
@@ -130640,7 +134671,7 @@ static int sqliteProcessJoin(Parse *pParse, Select *p){
         zName = pList->a[j].zName;
         iRightCol = columnIndex(pRightTab, zName);
         if( iRightCol<0
-         || !tableAndColumnIndex(pSrc, i+1, zName, &iLeft, &iLeftCol)
+         || !tableAndColumnIndex(pSrc, i+1, zName, &iLeft, &iLeftCol, 0)
         ){
           sqlite3ErrorMsg(pParse, "cannot join using column %s - column "
             "not present in both tables", zName);
@@ -130797,6 +134828,7 @@ static void pushOntoSorter(
     testcase( pKI->nAllField > pKI->nKeyField+2 );
     pOp->p4.pKeyInfo = sqlite3KeyInfoFromExprList(pParse,pSort->pOrderBy,nOBSat,
                                            pKI->nAllField-pKI->nKeyField-1);
+    pOp = 0; /* Ensure pOp not used after sqltie3VdbeAddOp3() */
     addrJmp = sqlite3VdbeCurrentAddr(v);
     sqlite3VdbeAddOp3(v, OP_Jump, addrJmp+1, 0, addrJmp+1); VdbeCoverage(v);
     pSort->labelBkOut = sqlite3VdbeMakeLabel(pParse);
@@ -131045,7 +135077,7 @@ static void selectInnerLoop(
   if( srcTab>=0 ){
     for(i=0; i<nResultCol; i++){
       sqlite3VdbeAddOp3(v, OP_Column, srcTab, i, regResult+i);
-      VdbeComment((v, "%s", p->pEList->a[i].zName));
+      VdbeComment((v, "%s", p->pEList->a[i].zEName));
     }
   }else if( eDest!=SRT_Exists ){
 #ifdef SQLITE_ENABLE_SORTER_REFERENCES
@@ -131111,7 +135143,8 @@ static void selectInnerLoop(
       testcase( eDest==SRT_Coroutine );
       testcase( eDest==SRT_Output );
       assert( eDest==SRT_Set || eDest==SRT_Mem
-           || eDest==SRT_Coroutine || eDest==SRT_Output );
+           || eDest==SRT_Coroutine || eDest==SRT_Output
+           || eDest==SRT_Upfrom );
     }
     sRowLoadInfo.regResult = regResult;
     sRowLoadInfo.ecelFlags = ecelFlags;
@@ -131159,6 +135192,7 @@ static void selectInnerLoop(
         pOp->opcode = OP_Null;
         pOp->p1 = 1;
         pOp->p2 = regPrev;
+        pOp = 0;  /* Ensure pOp is not used after sqlite3VdbeAddOp() */
 
         iJump = sqlite3VdbeCurrentAddr(v) + nResultCol;
         for(i=0; i<nResultCol; i++){
@@ -131259,6 +135293,30 @@ static void selectInnerLoop(
       break;
     }
 
+    case SRT_Upfrom: {
+      if( pSort ){
+        pushOntoSorter(
+            pParse, pSort, p, regResult, regOrig, nResultCol, nPrefixReg);
+      }else{
+        int i2 = pDest->iSDParm2;
+        int r1 = sqlite3GetTempReg(pParse);
+
+        /* If the UPDATE FROM join is an aggregate that matches no rows, it
+        ** might still be trying to return one row, because that is what
+        ** aggregates do.  Don't record that empty row in the output table. */
+        sqlite3VdbeAddOp2(v, OP_IsNull, regResult, iBreak); VdbeCoverage(v);
+
+        sqlite3VdbeAddOp3(v, OP_MakeRecord,
+                          regResult+(i2<0), nResultCol-(i2<0), r1);
+        if( i2<0 ){
+          sqlite3VdbeAddOp3(v, OP_Insert, iParm, r1, regResult);
+        }else{
+          sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iParm, r1, regResult, i2);
+        }
+      }
+      break;
+    }
+
 #ifndef SQLITE_OMIT_SUBQUERY
     /* If we are creating a set for an "expr IN (SELECT ...)" construct,
     ** then there should be a single item on the stack.  Write this
@@ -131283,6 +135341,7 @@ static void selectInnerLoop(
       break;
     }
 
+
     /* If any row exist in the result set, record that fact and abort.
     */
     case SRT_Exists: {
@@ -131665,7 +135724,7 @@ static void generateSortTail(
         iRead = iCol--;
       }
       sqlite3VdbeAddOp3(v, OP_Column, iSortTab, iRead, regRow+i);
-      VdbeComment((v, "%s", aOutEx[i].zName?aOutEx[i].zName : aOutEx[i].zSpan));
+      VdbeComment((v, "%s", aOutEx[i].zEName));
     }
   }
   switch( eDest ){
@@ -131690,6 +135749,17 @@ static void generateSortTail(
       break;
     }
 #endif
+    case SRT_Upfrom: {
+      int i2 = pDest->iSDParm2;
+      int r1 = sqlite3GetTempReg(pParse);
+      sqlite3VdbeAddOp3(v, OP_MakeRecord,regRow+(i2<0),nColumn-(i2<0),r1);
+      if( i2<0 ){
+        sqlite3VdbeAddOp3(v, OP_Insert, iParm, r1, regRow);
+      }else{
+        sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iParm, r1, regRow, i2);
+      }
+      break;
+    }
     default: {
       assert( eDest==SRT_Output || eDest==SRT_Coroutine );
       testcase( eDest==SRT_Output );
@@ -131999,9 +136069,9 @@ static void generateColumnNames(
     assert( p!=0 );
     assert( p->op!=TK_AGG_COLUMN );  /* Agg processing has not run yet */
     assert( p->op!=TK_COLUMN || p->y.pTab!=0 ); /* Covering idx not yet coded */
-    if( pEList->a[i].zName ){
+    if( pEList->a[i].zEName && pEList->a[i].eEName==ENAME_NAME ){
       /* An AS clause always takes first priority */
-      char *zName = pEList->a[i].zName;
+      char *zName = pEList->a[i].zEName;
       sqlite3VdbeSetColName(v, i, COLNAME_NAME, zName, SQLITE_TRANSIENT);
     }else if( srcName && p->op==TK_COLUMN ){
       char *zCol;
@@ -132023,7 +136093,7 @@ static void generateColumnNames(
         sqlite3VdbeSetColName(v, i, COLNAME_NAME, zCol, SQLITE_TRANSIENT);
       }
     }else{
-      const char *z = pEList->a[i].zSpan;
+      const char *z = pEList->a[i].zEName;
       z = z==0 ? sqlite3MPrintf(db, "column%d", i+1) : sqlite3DbStrDup(db, z);
       sqlite3VdbeSetColName(v, i, COLNAME_NAME, z, SQLITE_DYNAMIC);
     }
@@ -132085,7 +136155,7 @@ SQLITE_PRIVATE int sqlite3ColumnsFromExprList(
   for(i=0, pCol=aCol; i<nCol && !db->mallocFailed; i++, pCol++){
     /* Get an appropriate name for the column
     */
-    if( (zName = pEList->a[i].zName)!=0 ){
+    if( (zName = pEList->a[i].zEName)!=0 && pEList->a[i].eEName==ENAME_NAME ){
       /* If the column contains an "AS <name>" phrase, use <name> as the name */
     }else{
       Expr *pColExpr = sqlite3ExprSkipCollateAndLikely(pEList->a[i].pExpr);
@@ -132105,10 +136175,10 @@ SQLITE_PRIVATE int sqlite3ColumnsFromExprList(
         zName = pColExpr->u.zToken;
       }else{
         /* Use the original text of the column expression as its name */
-        zName = pEList->a[i].zSpan;
+        zName = pEList->a[i].zEName;
       }
     }
-    if( zName ){
+    if( zName && !sqlite3IsTrueOrFalse(zName) ){
       zName = sqlite3DbStrDup(db, zName);
     }else{
       zName = sqlite3MPrintf(db,"column%d",i+1);
@@ -132128,6 +136198,7 @@ SQLITE_PRIVATE int sqlite3ColumnsFromExprList(
       if( cnt>3 ) sqlite3_randomness(sizeof(cnt), &cnt);
     }
     pCol->zName = zName;
+    pCol->hName = sqlite3StrIHash(zName);
     sqlite3ColumnPropertiesFromName(0, pCol);
     if( zName && sqlite3HashInsert(&ht, zName, pCol)==pCol ){
       sqlite3OomFault(db);
@@ -132600,6 +136671,9 @@ static int multiSelectValues(
     assert( p->selFlags & SF_Values );
     assert( p->op==TK_ALL || (p->op==TK_SELECT && p->pPrior==0) );
     assert( p->pNext==0 || p->pEList->nExpr==p->pNext->pEList->nExpr );
+#ifndef SQLITE_OMIT_WINDOWFUNC
+    if( p->pWin ) return -1;
+#endif
     if( p->pPrior==0 ) break;
     assert( p->pPrior->pNext==p );
     p = p->pPrior;
@@ -132690,7 +136764,8 @@ static int multiSelect(
   */
   if( p->selFlags & SF_MultiValue ){
     rc = multiSelectValues(pParse, p, &dest);
-    goto multi_select_end;
+    if( rc>=0 ) goto multi_select_end;
+    rc = SQLITE_OK;
   }
 
   /* Make sure all SELECTs in the statement have the same number of elements
@@ -132817,9 +136892,7 @@ static int multiSelect(
                           selectOpName(p->op)));
         rc = sqlite3Select(pParse, p, &uniondest);
         testcase( rc!=SQLITE_OK );
-        /* Query flattening in sqlite3Select() might refill p->pOrderBy.
-        ** Be sure to delete p->pOrderBy, therefore, to avoid a memory leak. */
-        sqlite3ExprListDelete(db, p->pOrderBy);
+        assert( p->pOrderBy==0 );
         pDelete = p->pPrior;
         p->pPrior = pPrior;
         p->pOrderBy = 0;
@@ -132835,9 +136908,9 @@ static int multiSelect(
         ** it is that we currently need.
         */
         assert( unionTab==dest.iSDParm || dest.eDest!=priorOp );
-        if( dest.eDest!=priorOp ){
+        assert( p->pEList || db->mallocFailed );
+        if( dest.eDest!=priorOp && db->mallocFailed==0 ){
           int iCont, iBreak, iStart;
-          assert( p->pEList );
           iBreak = sqlite3VdbeMakeLabel(pParse);
           iCont = sqlite3VdbeMakeLabel(pParse);
           computeLimitRegisters(pParse, p, iBreak);
@@ -132906,6 +136979,7 @@ static int multiSelect(
         /* Generate code to take the intersection of the two temporary
         ** tables.
         */
+        if( rc ) break;
         assert( p->pEList );
         iBreak = sqlite3VdbeMakeLabel(pParse);
         iCont = sqlite3VdbeMakeLabel(pParse);
@@ -132933,6 +137007,7 @@ static int multiSelect(
     }
   #endif
   }
+  if( pParse->nErr ) goto multi_select_end;
 
   /* Compute collating sequences used by
   ** temporary tables needed to implement the compound select.
@@ -133271,7 +137346,7 @@ static int multiSelectOrderBy(
   sqlite3 *db;          /* Database connection */
   ExprList *pOrderBy;   /* The ORDER BY clause */
   int nOrderBy;         /* Number of terms in the ORDER BY clause */
-  int *aPermute;        /* Mapping from ORDER BY terms to result set columns */
+  u32 *aPermute;        /* Mapping from ORDER BY terms to result set columns */
 
   assert( p->pOrderBy!=0 );
   assert( pKeyDup==0 ); /* "Managed" code needs this.  Ticket #3382. */
@@ -133320,7 +137395,7 @@ static int multiSelectOrderBy(
   ** to the right and the left are evaluated, they use the correct
   ** collation.
   */
-  aPermute = sqlite3DbMallocRawNN(db, sizeof(int)*(nOrderBy + 1));
+  aPermute = sqlite3DbMallocRawNN(db, sizeof(u32)*(nOrderBy + 1));
   if( aPermute ){
     struct ExprList_item *pItem;
     aPermute[0] = nOrderBy;
@@ -133575,7 +137650,10 @@ static Expr *substExpr(
   ){
     pExpr->iRightJoinTable = pSubst->iNewTable;
   }
-  if( pExpr->op==TK_COLUMN && pExpr->iTable==pSubst->iTable ){
+  if( pExpr->op==TK_COLUMN
+   && pExpr->iTable==pSubst->iTable
+   && !ExprHasProperty(pExpr, EP_FixedCol)
+  ){
     if( pExpr->iColumn<0 ){
       pExpr->op = TK_NULL;
     }else{
@@ -133593,6 +137671,7 @@ static Expr *substExpr(
           ifNullRow.op = TK_IF_NULL_ROW;
           ifNullRow.pLeft = pCopy;
           ifNullRow.iTable = pSubst->iNewTable;
+          ifNullRow.flags = EP_Skip;
           pCopy = &ifNullRow;
         }
         testcase( ExprHasProperty(pCopy, EP_Subquery) );
@@ -133681,6 +137760,38 @@ static void substSelect(
 
 #if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW)
 /*
+** pSelect is a SELECT statement and pSrcItem is one item in the FROM
+** clause of that SELECT.
+**
+** This routine scans the entire SELECT statement and recomputes the
+** pSrcItem->colUsed mask.
+*/
+static int recomputeColumnsUsedExpr(Walker *pWalker, Expr *pExpr){
+  struct SrcList_item *pItem;
+  if( pExpr->op!=TK_COLUMN ) return WRC_Continue;
+  pItem = pWalker->u.pSrcItem;
+  if( pItem->iCursor!=pExpr->iTable ) return WRC_Continue;
+  if( pExpr->iColumn<0 ) return WRC_Continue;
+  pItem->colUsed |= sqlite3ExprColUsed(pExpr);
+  return WRC_Continue;
+}
+static void recomputeColumnsUsed(
+  Select *pSelect,                 /* The complete SELECT statement */
+  struct SrcList_item *pSrcItem    /* Which FROM clause item to recompute */
+){
+  Walker w;
+  if( NEVER(pSrcItem->pTab==0) ) return;
+  memset(&w, 0, sizeof(w));
+  w.xExprCallback = recomputeColumnsUsedExpr;
+  w.xSelectCallback = sqlite3SelectWalkNoop;
+  w.u.pSrcItem = pSrcItem;
+  pSrcItem->colUsed = 0;
+  sqlite3WalkSelect(&w, pSelect);
+}
+#endif /* !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) */
+
+#if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW)
+/*
 ** This routine attempts to flatten subqueries as a performance optimization.
 ** This routine returns 1 if it makes changes and 0 if no flattening occurs.
 **
@@ -133724,6 +137835,7 @@ static void substSelect(
 **        (3b) the FROM clause of the subquery may not contain a virtual
 **             table and
 **        (3c) the outer query may not be an aggregate.
+**        (3d) the outer query may not be DISTINCT.
 **
 **   (4)  The subquery can not be DISTINCT.
 **
@@ -133774,6 +137886,7 @@ static void substSelect(
 **              (17d1) aggregate, or
 **              (17d2) DISTINCT, or
 **              (17d3) a join.
+**        (17e) the subquery may not contain window functions
 **
 **        The parent and sub-query may contain WHERE clauses. Subject to
 **        rules (11), (13) and (14), they may also contain ORDER BY,
@@ -133852,6 +137965,7 @@ static int flattenSubquery(
   Expr *pWhere;                    /* The WHERE clause */
   struct SrcList_item *pSubitem;   /* The subquery */
   sqlite3 *db = pParse->db;
+  Walker w;                        /* Walker to persist agginfo data */
 
   /* Check to see if flattening is permitted.  Return 0 if not.
   */
@@ -133920,8 +138034,11 @@ static int flattenSubquery(
   */
   if( (pSubitem->fg.jointype & JT_OUTER)!=0 ){
     isLeftJoin = 1;
-    if( pSubSrc->nSrc>1 || isAgg || IsVirtual(pSubSrc->a[0].pTab) ){
-      /*  (3a)             (3c)     (3b) */
+    if( pSubSrc->nSrc>1                   /* (3a) */
+     || isAgg                             /* (3b) */
+     || IsVirtual(pSubSrc->a[0].pTab)     /* (3c) */
+     || (p->selFlags & SF_Distinct)!=0    /* (3d) */
+    ){
       return 0;
     }
   }
@@ -133955,6 +138072,9 @@ static int flattenSubquery(
       if( (pSub1->selFlags & (SF_Distinct|SF_Aggregate))!=0    /* (17b) */
        || (pSub1->pPrior && pSub1->op!=TK_ALL)                 /* (17a) */
        || pSub1->pSrc->nSrc<1                                  /* (17c) */
+#ifndef SQLITE_OMIT_WINDOWFUNC
+       || pSub1->pWin                                          /* (17e) */
+#endif
       ){
         return 0;
       }
@@ -134159,7 +138279,7 @@ static int flattenSubquery(
     ** We look at every expression in the outer query and every place we see
     ** "a" we substitute "x*3" and every place we see "b" we substitute "y+10".
     */
-    if( pSub->pOrderBy ){
+    if( pSub->pOrderBy && (pParent->selFlags & SF_NoopOrderBy)==0 ){
       /* At this point, any non-zero iOrderByCol values indicate that the
       ** ORDER BY column expression is identical to the iOrderByCol'th
       ** expression returned by SELECT statement pSub. Since these values
@@ -134181,9 +138301,15 @@ static int flattenSubquery(
     pWhere = pSub->pWhere;
     pSub->pWhere = 0;
     if( isLeftJoin>0 ){
-      setJoinExpr(pWhere, iNewParent);
+      sqlite3SetJoinExpr(pWhere, iNewParent);
+    }
+    if( pWhere ){
+      if( pParent->pWhere ){
+        pParent->pWhere = sqlite3PExpr(pParse, TK_AND, pWhere, pParent->pWhere);
+      }else{
+        pParent->pWhere = pWhere;
+      }
     }
-    pParent->pWhere = sqlite3ExprAnd(pParse, pWhere, pParent->pWhere);
     if( db->mallocFailed==0 ){
       SubstContext x;
       x.pParse = pParse;
@@ -134209,15 +138335,23 @@ static int flattenSubquery(
       pParent->pLimit = pSub->pLimit;
       pSub->pLimit = 0;
     }
+
+    /* Recompute the SrcList_item.colUsed masks for the flattened
+    ** tables. */
+    for(i=0; i<nSubSrc; i++){
+      recomputeColumnsUsed(pParent, &pSrc->a[i+iFrom]);
+    }
   }
 
   /* Finially, delete what is left of the subquery and return
   ** success.
   */
+  sqlite3AggInfoPersistWalkerInit(&w, pParse);
+  sqlite3WalkSelect(&w,pSub1);
   sqlite3SelectDelete(db, pSub1);
 
 #if SELECTTRACE_ENABLED
-  if( sqlite3SelectTrace & 0x100 ){
+  if( sqlite3_unsupported_selecttrace & 0x100 ){
     SELECTTRACE(0x100,pParse,p,("After flattening:\n"));
     sqlite3TreeViewSelect(0, p, 0);
   }
@@ -134241,23 +138375,35 @@ struct WhereConst {
 
 /*
 ** Add a new entry to the pConst object.  Except, do not add duplicate
-** pColumn entires.
+** pColumn entires.  Also, do not add if doing so would not be appropriate.
+**
+** The caller guarantees the pColumn is a column and pValue is a constant.
+** This routine has to do some additional checks before completing the
+** insert.
 */
 static void constInsert(
-  WhereConst *pConst,      /* The WhereConst into which we are inserting */
-  Expr *pColumn,           /* The COLUMN part of the constraint */
-  Expr *pValue             /* The VALUE part of the constraint */
+  WhereConst *pConst,  /* The WhereConst into which we are inserting */
+  Expr *pColumn,       /* The COLUMN part of the constraint */
+  Expr *pValue,        /* The VALUE part of the constraint */
+  Expr *pExpr          /* Overall expression: COLUMN=VALUE or VALUE=COLUMN */
 ){
   int i;
   assert( pColumn->op==TK_COLUMN );
+  assert( sqlite3ExprIsConstant(pValue) );
+
+  if( ExprHasProperty(pColumn, EP_FixedCol) ) return;
+  if( sqlite3ExprAffinity(pValue)!=0 ) return;
+  if( !sqlite3IsBinary(sqlite3ExprCompareCollSeq(pConst->pParse,pExpr)) ){
+    return;
+  }
 
   /* 2018-10-25 ticket [cf5ed20f]
   ** Make sure the same pColumn is not inserted more than once */
   for(i=0; i<pConst->nConst; i++){
-    const Expr *pExpr = pConst->apExpr[i*2];
-    assert( pExpr->op==TK_COLUMN );
-    if( pExpr->iTable==pColumn->iTable
-     && pExpr->iColumn==pColumn->iColumn
+    const Expr *pE2 = pConst->apExpr[i*2];
+    assert( pE2->op==TK_COLUMN );
+    if( pE2->iTable==pColumn->iTable
+     && pE2->iColumn==pColumn->iColumn
     ){
       return;  /* Already present.  Return without doing anything. */
     }
@@ -134269,7 +138415,6 @@ static void constInsert(
   if( pConst->apExpr==0 ){
     pConst->nConst = 0;
   }else{
-    if( ExprHasProperty(pValue, EP_FixedCol) ) pValue = pValue->pLeft;
     pConst->apExpr[pConst->nConst*2-2] = pColumn;
     pConst->apExpr[pConst->nConst*2-1] = pValue;
   }
@@ -134295,19 +138440,11 @@ static void findConstInWhere(WhereConst *pConst, Expr *pExpr){
   pLeft = pExpr->pLeft;
   assert( pRight!=0 );
   assert( pLeft!=0 );
-  if( pRight->op==TK_COLUMN
-   && !ExprHasProperty(pRight, EP_FixedCol)
-   && sqlite3ExprIsConstant(pLeft)
-   && sqlite3IsBinary(sqlite3BinaryCompareCollSeq(pConst->pParse,pLeft,pRight))
-  ){
-    constInsert(pConst, pRight, pLeft);
-  }else
-  if( pLeft->op==TK_COLUMN
-   && !ExprHasProperty(pLeft, EP_FixedCol)
-   && sqlite3ExprIsConstant(pRight)
-   && sqlite3IsBinary(sqlite3BinaryCompareCollSeq(pConst->pParse,pLeft,pRight))
-  ){
-    constInsert(pConst, pLeft, pRight);
+  if( pRight->op==TK_COLUMN && sqlite3ExprIsConstant(pLeft) ){
+    constInsert(pConst,pRight,pLeft,pExpr);
+  }
+  if( pLeft->op==TK_COLUMN && sqlite3ExprIsConstant(pRight) ){
+    constInsert(pConst,pLeft,pRight,pExpr);
   }
 }
 
@@ -134321,7 +138458,11 @@ static int propagateConstantExprRewrite(Walker *pWalker, Expr *pExpr){
   int i;
   WhereConst *pConst;
   if( pExpr->op!=TK_COLUMN ) return WRC_Continue;
-  if( ExprHasProperty(pExpr, EP_FixedCol) ) return WRC_Continue;
+  if( ExprHasProperty(pExpr, EP_FixedCol|EP_FromJoin) ){
+    testcase( ExprHasProperty(pExpr, EP_FixedCol) );
+    testcase( ExprHasProperty(pExpr, EP_FromJoin) );
+    return WRC_Continue;
+  }
   pConst = pWalker->u.pConst;
   for(i=0; i<pConst->nConst; i++){
     Expr *pColumn = pConst->apExpr[i*2];
@@ -134343,10 +138484,9 @@ static int propagateConstantExprRewrite(Walker *pWalker, Expr *pExpr){
 ** The WHERE-clause constant propagation optimization.
 **
 ** If the WHERE clause contains terms of the form COLUMN=CONSTANT or
-** CONSTANT=COLUMN that must be tree (in other words, if the terms top-level
-** AND-connected terms that are not part of a ON clause from a LEFT JOIN)
-** then throughout the query replace all other occurrences of COLUMN
-** with CONSTANT within the WHERE clause.
+** CONSTANT=COLUMN that are top-level AND-connected terms that are not
+** part of a ON clause from a LEFT JOIN, then throughout the query
+** replace all other occurrences of COLUMN with CONSTANT.
 **
 ** For example, the query:
 **
@@ -134468,11 +138608,14 @@ static int pushDownWhereTerms(
 ){
   Expr *pNew;
   int nChng = 0;
+  Select *pSel;
   if( pWhere==0 ) return 0;
   if( pSubq->selFlags & SF_Recursive ) return 0;  /* restriction (2) */
 
 #ifndef SQLITE_OMIT_WINDOWFUNC
-  if( pSubq->pWin ) return 0;    /* restriction (6) */
+  for(pSel=pSubq; pSel; pSel=pSel->pPrior){
+    if( pSel->pWin ) return 0;    /* restriction (6) */
+  }
 #endif
 
 #ifdef SQLITE_DEBUG
@@ -134550,7 +138693,7 @@ static u8 minMaxQuery(sqlite3 *db, Expr *pFunc, ExprList **ppMinMax){
   ExprList *pEList = pFunc->x.pList;    /* Arguments to agg function */
   const char *zFunc;                    /* Name of aggregate function pFunc */
   ExprList *pOrderBy;
-  u8 sortFlags;
+  u8 sortFlags = 0;
 
   assert( *ppMinMax==0 );
   assert( pFunc->op==TK_AGG_FUNCTION );
@@ -134561,7 +138704,9 @@ static u8 minMaxQuery(sqlite3 *db, Expr *pFunc, ExprList **ppMinMax){
   zFunc = pFunc->u.zToken;
   if( sqlite3StrICmp(zFunc, "min")==0 ){
     eRet = WHERE_ORDERBY_MIN;
-    sortFlags = KEYINFO_ORDER_BIGNULL;
+    if( sqlite3ExprCanBeNull(pEList->a[0].pExpr) ){
+      sortFlags = KEYINFO_ORDER_BIGNULL;
+    }
   }else if( sqlite3StrICmp(zFunc, "max")==0 ){
     eRet = WHERE_ORDERBY_MAX;
     sortFlags = KEYINFO_ORDER_DESC;
@@ -134670,6 +138815,14 @@ static int convertCompoundSelectToSubquery(Walker *pWalker, Select *p){
   for(pX=p; pX && (pX->op==TK_ALL || pX->op==TK_SELECT); pX=pX->pPrior){}
   if( pX==0 ) return WRC_Continue;
   a = p->pOrderBy->a;
+#ifndef SQLITE_OMIT_WINDOWFUNC
+  /* If iOrderByCol is already non-zero, then it has already been matched
+  ** to a result column of the SELECT statement. This occurs when the
+  ** SELECT is rewritten for window-functions processing and then passed
+  ** to sqlite3SelectPrep() and similar a second time. The rewriting done
+  ** by this function is not required in this case. */
+  if( a[0].u.x.iOrderByCol ) return WRC_Continue;
+#endif
   for(i=p->pOrderBy->nExpr-1; i>=0; i--){
     if( a[i].pExpr->flags & EP_Collate ) break;
   }
@@ -134695,6 +138848,9 @@ static int convertCompoundSelectToSubquery(Walker *pWalker, Select *p){
   p->pPrior = 0;
   p->pNext = 0;
   p->pWith = 0;
+#ifndef SQLITE_OMIT_WINDOWFUNC
+  p->pWinDefn = 0;
+#endif
   p->selFlags &= ~SF_Compound;
   assert( (p->selFlags & SF_Converted)==0 );
   p->selFlags |= SF_Converted;
@@ -134794,6 +138950,9 @@ static int withExpand(
   With *pWith;                    /* WITH clause that pCte belongs to */
 
   assert( pFrom->pTab==0 );
+  if( pParse->nErr ){
+    return SQLITE_ERROR;
+  }
 
   pCte = searchWith(pParse->pWith, pFrom, &pWith);
   if( pCte ){
@@ -134914,7 +139073,7 @@ static void selectPopWith(Walker *pWalker, Select *p){
   if( OK_IF_ALWAYS_TRUE(pParse->pWith) && p->pPrior==0 ){
     With *pWith = findRightmost(p)->pWith;
     if( pWith!=0 ){
-      assert( pParse->pWith==pWith );
+      assert( pParse->pWith==pWith || pParse->nErr );
       pParse->pWith = pWith->pOuter;
     }
   }
@@ -135015,8 +139174,8 @@ static int selectExpander(Walker *pWalker, Select *p){
   for(i=0, pFrom=pTabList->a; i<pTabList->nSrc; i++, pFrom++){
     Table *pTab;
     assert( pFrom->fg.isRecursive==0 || pFrom->pTab!=0 );
-    if( pFrom->fg.isRecursive ) continue;
-    assert( pFrom->pTab==0 );
+    if( pFrom->pTab ) continue;
+    assert( pFrom->fg.isRecursive==0 );
 #ifndef SQLITE_OMIT_CTE
     if( withExpand(pWalker, pFrom) ) return WRC_Abort;
     if( pFrom->pTab ) {} else
@@ -135045,7 +139204,7 @@ static int selectExpander(Walker *pWalker, Select *p){
       if( !IsVirtual(pTab) && cannotBeFunction(pParse, pFrom) ){
         return WRC_Abort;
       }
-#if !defined(SQLITE_OMIT_VIEW) || !defined (SQLITE_OMIT_VIRTUALTABLE)
+#if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_VIRTUALTABLE)
       if( IsVirtual(pTab) || pTab->pSelect ){
         i16 nCol;
         u8 eCodeOrig = pWalker->eCode;
@@ -135053,8 +139212,18 @@ static int selectExpander(Walker *pWalker, Select *p){
         assert( pFrom->pSelect==0 );
         if( pTab->pSelect && (db->flags & SQLITE_EnableView)==0 ){
           sqlite3ErrorMsg(pParse, "access to view \"%s\" prohibited",
-              pTab->zName);
+            pTab->zName);
         }
+#ifndef SQLITE_OMIT_VIRTUALTABLE
+        if( IsVirtual(pTab)
+         && pFrom->fg.fromDDL
+         && ALWAYS(pTab->pVTable!=0)
+         && pTab->pVTable->eVtabRisk > ((db->flags & SQLITE_TrustedSchema)!=0)
+        ){
+          sqlite3ErrorMsg(pParse, "unsafe use of virtual table \"%s\"",
+                                  pTab->zName);
+        }
+#endif
         pFrom->pSelect = sqlite3SelectDup(db, pTab->pSelect, 0);
         nCol = pTab->nCol;
         pTab->nCol = -1;
@@ -135074,7 +139243,7 @@ static int selectExpander(Walker *pWalker, Select *p){
 
   /* Process NATURAL keywords, and ON and USING clauses of joins.
   */
-  if( db->mallocFailed || sqliteProcessJoin(pParse, p) ){
+  if( pParse->nErr || db->mallocFailed || sqliteProcessJoin(pParse, p) ){
     return WRC_Abort;
   }
 
@@ -135121,10 +139290,9 @@ static int selectExpander(Walker *pWalker, Select *p){
         */
         pNew = sqlite3ExprListAppend(pParse, pNew, a[k].pExpr);
         if( pNew ){
-          pNew->a[pNew->nExpr-1].zName = a[k].zName;
-          pNew->a[pNew->nExpr-1].zSpan = a[k].zSpan;
-          a[k].zName = 0;
-          a[k].zSpan = 0;
+          pNew->a[pNew->nExpr-1].zEName = a[k].zEName;
+          pNew->a[pNew->nExpr-1].eEName = a[k].eEName;
+          a[k].zEName = 0;
         }
         a[k].pExpr = 0;
       }else{
@@ -135163,7 +139331,7 @@ static int selectExpander(Walker *pWalker, Select *p){
 
             assert( zName );
             if( zTName && pSub
-             && sqlite3MatchSpanName(pSub->pEList->a[j].zSpan, 0, zTName, 0)==0
+             && sqlite3MatchEName(&pSub->pEList->a[j], 0, zTName, 0)==0
             ){
               continue;
             }
@@ -135181,7 +139349,7 @@ static int selectExpander(Walker *pWalker, Select *p){
 
             if( i>0 && zTName==0 ){
               if( (pFrom->fg.jointype & JT_NATURAL)!=0
-                && tableAndColumnIndex(pTabList, i, zName, 0, 0)
+                && tableAndColumnIndex(pTabList, i, zName, 0, 0, 1)
               ){
                 /* In a NATURAL join, omit the join columns from the
                 ** table to the right of the join */
@@ -135214,17 +139382,18 @@ static int selectExpander(Walker *pWalker, Select *p){
             pNew = sqlite3ExprListAppend(pParse, pNew, pExpr);
             sqlite3TokenInit(&sColname, zColname);
             sqlite3ExprListSetName(pParse, pNew, &sColname, 0);
-            if( pNew && (p->selFlags & SF_NestedFrom)!=0 ){
+            if( pNew && (p->selFlags & SF_NestedFrom)!=0 && !IN_RENAME_OBJECT ){
               struct ExprList_item *pX = &pNew->a[pNew->nExpr-1];
+              sqlite3DbFree(db, pX->zEName);
               if( pSub ){
-                pX->zSpan = sqlite3DbStrDup(db, pSub->pEList->a[j].zSpan);
-                testcase( pX->zSpan==0 );
+                pX->zEName = sqlite3DbStrDup(db, pSub->pEList->a[j].zEName);
+                testcase( pX->zEName==0 );
               }else{
-                pX->zSpan = sqlite3MPrintf(db, "%s.%s.%s",
+                pX->zEName = sqlite3MPrintf(db, "%s.%s.%s",
                                            zSchemaName, zTabName, zColname);
-                testcase( pX->zSpan==0 );
+                testcase( pX->zEName==0 );
               }
-              pX->bSpanIsTab = 1;
+              pX->eEName = ENAME_TAB;
             }
             sqlite3DbFree(db, zToFree);
           }
@@ -135253,29 +139422,6 @@ static int selectExpander(Walker *pWalker, Select *p){
   return WRC_Continue;
 }
 
-/*
-** No-op routine for the parse-tree walker.
-**
-** When this routine is the Walker.xExprCallback then expression trees
-** are walked without any actions being taken at each node.  Presumably,
-** when this routine is used for Walker.xExprCallback then
-** Walker.xSelectCallback is set to do something useful for every
-** subquery in the parser tree.
-*/
-SQLITE_PRIVATE int sqlite3ExprWalkNoop(Walker *NotUsed, Expr *NotUsed2){
-  UNUSED_PARAMETER2(NotUsed, NotUsed2);
-  return WRC_Continue;
-}
-
-/*
-** No-op routine for the parse-tree walker for SELECT statements.
-** subquery in the parser tree.
-*/
-SQLITE_PRIVATE int sqlite3SelectWalkNoop(Walker *NotUsed, Select *NotUsed2){
-  UNUSED_PARAMETER2(NotUsed, NotUsed2);
-  return WRC_Continue;
-}
-
 #if SQLITE_DEBUG
 /*
 ** Always assert.  This xSelectCallback2 implementation proves that the
@@ -135417,6 +139563,7 @@ static void resetAccumulator(Parse *pParse, AggInfo *pAggInfo){
   struct AggInfo_func *pFunc;
   int nReg = pAggInfo->nFunc + pAggInfo->nColumn;
   if( nReg==0 ) return;
+  if( pParse->nErr || pParse->db->mallocFailed ) return;
 #ifdef SQLITE_DEBUG
   /* Verify that all AggInfo registers are within the range specified by
   ** AggInfo.mnReg..AggInfo.mxReg */
@@ -135433,7 +139580,7 @@ static void resetAccumulator(Parse *pParse, AggInfo *pAggInfo){
   sqlite3VdbeAddOp3(v, OP_Null, 0, pAggInfo->mnReg, pAggInfo->mxReg);
   for(pFunc=pAggInfo->aFunc, i=0; i<pAggInfo->nFunc; i++, pFunc++){
     if( pFunc->iDistinct>=0 ){
-      Expr *pE = pFunc->pExpr;
+      Expr *pE = pFunc->pFExpr;
       assert( !ExprHasProperty(pE, EP_xIsSelect) );
       if( pE->x.pList==0 || pE->x.pList->nExpr!=1 ){
         sqlite3ErrorMsg(pParse, "DISTINCT aggregates must have exactly one "
@@ -135457,8 +139604,8 @@ static void finalizeAggFunctions(Parse *pParse, AggInfo *pAggInfo){
   int i;
   struct AggInfo_func *pF;
   for(i=0, pF=pAggInfo->aFunc; i<pAggInfo->nFunc; i++, pF++){
-    ExprList *pList = pF->pExpr->x.pList;
-    assert( !ExprHasProperty(pF->pExpr, EP_xIsSelect) );
+    ExprList *pList = pF->pFExpr->x.pList;
+    assert( !ExprHasProperty(pF->pFExpr, EP_xIsSelect) );
     sqlite3VdbeAddOp2(v, OP_AggFinal, pF->iMem, pList ? pList->nExpr : 0);
     sqlite3VdbeAppendP4(v, pF->pFunc, P4_FUNCDEF);
   }
@@ -135487,22 +139634,26 @@ static void updateAccumulator(Parse *pParse, int regAcc, AggInfo *pAggInfo){
     int nArg;
     int addrNext = 0;
     int regAgg;
-    ExprList *pList = pF->pExpr->x.pList;
-    assert( !ExprHasProperty(pF->pExpr, EP_xIsSelect) );
-    assert( !IsWindowFunc(pF->pExpr) );
-    if( ExprHasProperty(pF->pExpr, EP_WinFunc) ){
-      Expr *pFilter = pF->pExpr->y.pWin->pFilter;
+    ExprList *pList = pF->pFExpr->x.pList;
+    assert( !ExprHasProperty(pF->pFExpr, EP_xIsSelect) );
+    assert( !IsWindowFunc(pF->pFExpr) );
+    if( ExprHasProperty(pF->pFExpr, EP_WinFunc) ){
+      Expr *pFilter = pF->pFExpr->y.pWin->pFilter;
       if( pAggInfo->nAccumulator
        && (pF->pFunc->funcFlags & SQLITE_FUNC_NEEDCOLL)
+       && regAcc
       ){
+        /* If regAcc==0, there there exists some min() or max() function
+        ** without a FILTER clause that will ensure the magnet registers
+        ** are populated. */
         if( regHit==0 ) regHit = ++pParse->nMem;
-        /* If this is the first row of the group (regAcc==0), clear the
+        /* If this is the first row of the group (regAcc contains 0), clear the
         ** "magnet" register regHit so that the accumulator registers
         ** are populated if the FILTER clause jumps over the the
         ** invocation of min() or max() altogether. Or, if this is not
-        ** the first row (regAcc==1), set the magnet register so that the
-        ** accumulators are not populated unless the min()/max() is invoked and
-        ** indicates that they should be.  */
+        ** the first row (regAcc contains 1), set the magnet register so that
+        ** the accumulators are not populated unless the min()/max() is invoked
+        ** and indicates that they should be.  */
         sqlite3VdbeAddOp2(v, OP_Copy, regAcc, regHit);
       }
       addrNext = sqlite3VdbeMakeLabel(pParse);
@@ -135553,12 +139704,12 @@ static void updateAccumulator(Parse *pParse, int regAcc, AggInfo *pAggInfo){
     addrHitTest = sqlite3VdbeAddOp1(v, OP_If, regHit); VdbeCoverage(v);
   }
   for(i=0, pC=pAggInfo->aCol; i<pAggInfo->nAccumulator; i++, pC++){
-    sqlite3ExprCode(pParse, pC->pExpr, pC->iMem);
+    sqlite3ExprCode(pParse, pC->pCExpr, pC->iMem);
   }
 
   pAggInfo->directMode = 0;
   if( addrHitTest ){
-    sqlite3VdbeJumpHere(v, addrHitTest);
+    sqlite3VdbeJumpHereOrPopInst(v, addrHitTest);
   }
 }
 
@@ -135638,7 +139789,7 @@ static void havingToWhere(Parse *pParse, Select *p){
   sWalker.u.pSelect = p;
   sqlite3WalkExpr(&sWalker, p->pHaving);
 #if SELECTTRACE_ENABLED
-  if( sWalker.eCode && (sqlite3SelectTrace & 0x100)!=0 ){
+  if( sWalker.eCode && (sqlite3_unsupported_selecttrace & 0x100)!=0 ){
     SELECTTRACE(0x100,pParse,p,("Move HAVING terms into WHERE:\n"));
     sqlite3TreeViewSelect(0, p, 0);
   }
@@ -135760,7 +139911,7 @@ static int countOfViewOptimization(Parse *pParse, Select *p){
   p->selFlags &= ~SF_Aggregate;
 
 #if SELECTTRACE_ENABLED
-  if( sqlite3SelectTrace & 0x400 ){
+  if( sqlite3_unsupported_selecttrace & 0x400 ){
     SELECTTRACE(0x400,pParse,p,("After count-of-view optimization:\n"));
     sqlite3TreeViewSelect(0, p, 0);
   }
@@ -135796,10 +139947,10 @@ SQLITE_PRIVATE int sqlite3Select(
   Expr *pWhere;          /* The WHERE clause.  May be NULL */
   ExprList *pGroupBy;    /* The GROUP BY clause.  May be NULL */
   Expr *pHaving;         /* The HAVING clause.  May be NULL */
+  AggInfo *pAggInfo = 0; /* Aggregate information */
   int rc = 1;            /* Value to return from this function */
   DistinctCtx sDistinct; /* Info on how to code the DISTINCT keyword */
   SortCtx sSort;         /* Info on how to code the ORDER BY clause */
-  AggInfo sAggInfo;      /* Information used by aggregate queries */
   int iEnd;              /* Address of the end of the query */
   sqlite3 *db;           /* The database connection */
   ExprList *pMinMaxOrderBy = 0;  /* Added ORDER BY for min/max queries */
@@ -135811,10 +139962,9 @@ SQLITE_PRIVATE int sqlite3Select(
     return 1;
   }
   if( sqlite3AuthCheck(pParse, SQLITE_SELECT, 0, 0, 0) ) return 1;
-  memset(&sAggInfo, 0, sizeof(sAggInfo));
 #if SELECTTRACE_ENABLED
   SELECTTRACE(1,pParse,p, ("begin processing:\n", pParse->addrExplain));
-  if( sqlite3SelectTrace & 0x100 ){
+  if( sqlite3_unsupported_selecttrace & 0x100 ){
     sqlite3TreeViewSelect(0, p, 0);
   }
 #endif
@@ -135833,6 +139983,7 @@ SQLITE_PRIVATE int sqlite3Select(
     sqlite3ExprListDelete(db, p->pOrderBy);
     p->pOrderBy = 0;
     p->selFlags &= ~SF_Distinct;
+    p->selFlags |= SF_NoopOrderBy;
   }
   sqlite3SelectPrep(pParse, p, 0);
   if( pParse->nErr || db->mallocFailed ){
@@ -135840,22 +139991,42 @@ SQLITE_PRIVATE int sqlite3Select(
   }
   assert( p->pEList!=0 );
 #if SELECTTRACE_ENABLED
-  if( sqlite3SelectTrace & 0x104 ){
+  if( sqlite3_unsupported_selecttrace & 0x104 ){
     SELECTTRACE(0x104,pParse,p, ("after name resolution:\n"));
     sqlite3TreeViewSelect(0, p, 0);
   }
 #endif
 
+  /* If the SF_UpdateFrom flag is set, then this function is being called
+  ** as part of populating the temp table for an UPDATE...FROM statement.
+  ** In this case, it is an error if the target object (pSrc->a[0]) name
+  ** or alias is duplicated within FROM clause (pSrc->a[1..n]).  */
+  if( p->selFlags & SF_UpdateFrom ){
+    struct SrcList_item *p0 = &p->pSrc->a[0];
+    for(i=1; i<p->pSrc->nSrc; i++){
+      struct SrcList_item *p1 = &p->pSrc->a[i];
+      if( p0->pTab==p1->pTab && 0==sqlite3_stricmp(p0->zAlias, p1->zAlias) ){
+        sqlite3ErrorMsg(pParse,
+            "target object/alias may not appear in FROM clause: %s",
+            p0->zAlias ? p0->zAlias : p0->pTab->zName
+        );
+        goto select_end;
+      }
+    }
+  }
+
   if( pDest->eDest==SRT_Output ){
     generateColumnNames(pParse, p);
   }
 
 #ifndef SQLITE_OMIT_WINDOWFUNC
-  if( sqlite3WindowRewrite(pParse, p) ){
+  rc = sqlite3WindowRewrite(pParse, p);
+  if( rc ){
+    assert( db->mallocFailed || pParse->nErr>0 );
     goto select_end;
   }
 #if SELECTTRACE_ENABLED
-  if( sqlite3SelectTrace & 0x108 ){
+  if( p->pWin && (sqlite3_unsupported_selecttrace & 0x108)!=0 ){
     SELECTTRACE(0x104,pParse,p, ("after window rewrite:\n"));
     sqlite3TreeViewSelect(0, p, 0);
   }
@@ -135866,7 +140037,7 @@ SQLITE_PRIVATE int sqlite3Select(
   memset(&sSort, 0, sizeof(sSort));
   sSort.pOrderBy = p->pOrderBy;
 
-  /* Try to various optimizations (flattening subqueries, and strength
+  /* Try to do various optimizations (flattening subqueries, and strength
   ** reduction of join operators) in the FROM clause up into the main query
   */
 #if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW)
@@ -135875,6 +140046,11 @@ SQLITE_PRIVATE int sqlite3Select(
     Select *pSub = pItem->pSelect;
     Table *pTab = pItem->pTab;
 
+    /* The expander should have already created transient Table objects
+    ** even for FROM clause elements such as subqueries that do not correspond
+    ** to a real table */
+    assert( pTab!=0 );
+
     /* Convert LEFT JOIN into JOIN if there are terms of the right table
     ** of the LEFT JOIN used in the WHERE clause.
     */
@@ -135957,7 +140133,7 @@ SQLITE_PRIVATE int sqlite3Select(
     rc = multiSelect(pParse, p, pDest);
 #if SELECTTRACE_ENABLED
     SELECTTRACE(0x1,pParse,p,("end compound-select processing\n"));
-    if( (sqlite3SelectTrace & 0x2000)!=0 && ExplainQueryPlanParent(pParse)==0 ){
+    if( (sqlite3_unsupported_selecttrace & 0x2000)!=0 && ExplainQueryPlanParent(pParse)==0 ){
       sqlite3TreeViewSelect(0, p, 0);
     }
 #endif
@@ -135976,7 +140152,7 @@ SQLITE_PRIVATE int sqlite3Select(
    && propagateConstants(pParse, p)
   ){
 #if SELECTTRACE_ENABLED
-    if( sqlite3SelectTrace & 0x100 ){
+    if( sqlite3_unsupported_selecttrace & 0x100 ){
       SELECTTRACE(0x100,pParse,p,("After constant propagation:\n"));
       sqlite3TreeViewSelect(0, p, 0);
     }
@@ -136064,7 +140240,7 @@ SQLITE_PRIVATE int sqlite3Select(
                            (pItem->fg.jointype & JT_OUTER)!=0)
     ){
 #if SELECTTRACE_ENABLED
-      if( sqlite3SelectTrace & 0x100 ){
+      if( sqlite3_unsupported_selecttrace & 0x100 ){
         SELECTTRACE(0x100,pParse,p,
             ("After WHERE-clause push-down into subquery %d:\n", pSub->selId));
         sqlite3TreeViewSelect(0, p, 0);
@@ -136164,7 +140340,7 @@ SQLITE_PRIVATE int sqlite3Select(
   sDistinct.isTnct = (p->selFlags & SF_Distinct)!=0;
 
 #if SELECTTRACE_ENABLED
-  if( sqlite3SelectTrace & 0x400 ){
+  if( sqlite3_unsupported_selecttrace & 0x400 ){
     SELECTTRACE(0x400,pParse,p,("After all FROM-clause analysis:\n"));
     sqlite3TreeViewSelect(0, p, 0);
   }
@@ -136187,16 +140363,20 @@ SQLITE_PRIVATE int sqlite3Select(
   */
   if( (p->selFlags & (SF_Distinct|SF_Aggregate))==SF_Distinct
    && sqlite3ExprListCompare(sSort.pOrderBy, pEList, -1)==0
+#ifndef SQLITE_OMIT_WINDOWFUNC
+   && p->pWin==0
+#endif
   ){
     p->selFlags &= ~SF_Distinct;
     pGroupBy = p->pGroupBy = sqlite3ExprListDup(db, pEList, 0);
+    p->selFlags |= SF_Aggregate;
     /* Notice that even thought SF_Distinct has been cleared from p->selFlags,
     ** the sDistinct.isTnct is still set.  Hence, isTnct represents the
     ** original setting of the SF_Distinct flag, not the current setting */
     assert( sDistinct.isTnct );
 
 #if SELECTTRACE_ENABLED
-    if( sqlite3SelectTrace & 0x400 ){
+    if( sqlite3_unsupported_selecttrace & 0x400 ){
       SELECTTRACE(0x400,pParse,p,("Transform DISTINCT into GROUP BY:\n"));
       sqlite3TreeViewSelect(0, p, 0);
     }
@@ -136262,9 +140442,9 @@ SQLITE_PRIVATE int sqlite3Select(
     u16 wctrlFlags = (sDistinct.isTnct ? WHERE_WANT_DISTINCT : 0)
                    | (p->selFlags & SF_FixedLimit);
 #ifndef SQLITE_OMIT_WINDOWFUNC
-    Window *pWin = p->pWin;      /* Master window object (or NULL) */
+    Window *pWin = p->pWin;      /* Main window object (or NULL) */
     if( pWin ){
-      sqlite3WindowCodeInit(pParse, pWin);
+      sqlite3WindowCodeInit(pParse, p);
     }
 #endif
     assert( WHERE_USE_LIMIT==SF_FixedLimit );
@@ -136395,14 +140575,21 @@ SQLITE_PRIVATE int sqlite3Select(
     ** sAggInfo for all TK_AGG_FUNCTION nodes in expressions of the
     ** SELECT statement.
     */
+    pAggInfo = sqlite3DbMallocZero(db, sizeof(*pAggInfo) );
+    if( pAggInfo==0 ){
+      goto select_end;
+    }
+    pAggInfo->pNext = pParse->pAggList;
+    pParse->pAggList = pAggInfo;
+    pAggInfo->selId = p->selId;
     memset(&sNC, 0, sizeof(sNC));
     sNC.pParse = pParse;
     sNC.pSrcList = pTabList;
-    sNC.uNC.pAggInfo = &sAggInfo;
+    sNC.uNC.pAggInfo = pAggInfo;
     VVA_ONLY( sNC.ncFlags = NC_UAggInfo; )
-    sAggInfo.mnReg = pParse->nMem+1;
-    sAggInfo.nSortingColumn = pGroupBy ? pGroupBy->nExpr : 0;
-    sAggInfo.pGroupBy = pGroupBy;
+    pAggInfo->mnReg = pParse->nMem+1;
+    pAggInfo->nSortingColumn = pGroupBy ? pGroupBy->nExpr : 0;
+    pAggInfo->pGroupBy = pGroupBy;
     sqlite3ExprAnalyzeAggList(&sNC, pEList);
     sqlite3ExprAnalyzeAggList(&sNC, sSort.pOrderBy);
     if( pHaving ){
@@ -136415,14 +140602,14 @@ SQLITE_PRIVATE int sqlite3Select(
       }
       sqlite3ExprAnalyzeAggregates(&sNC, pHaving);
     }
-    sAggInfo.nAccumulator = sAggInfo.nColumn;
-    if( p->pGroupBy==0 && p->pHaving==0 && sAggInfo.nFunc==1 ){
-      minMaxFlag = minMaxQuery(db, sAggInfo.aFunc[0].pExpr, &pMinMaxOrderBy);
+    pAggInfo->nAccumulator = pAggInfo->nColumn;
+    if( p->pGroupBy==0 && p->pHaving==0 && pAggInfo->nFunc==1 ){
+      minMaxFlag = minMaxQuery(db, pAggInfo->aFunc[0].pFExpr, &pMinMaxOrderBy);
     }else{
       minMaxFlag = WHERE_ORDERBY_NORMAL;
     }
-    for(i=0; i<sAggInfo.nFunc; i++){
-      Expr *pExpr = sAggInfo.aFunc[i].pExpr;
+    for(i=0; i<pAggInfo->nFunc; i++){
+      Expr *pExpr = pAggInfo->aFunc[i].pFExpr;
       assert( !ExprHasProperty(pExpr, EP_xIsSelect) );
       sNC.ncFlags |= NC_InAggFunc;
       sqlite3ExprAnalyzeAggList(&sNC, pExpr->x.pList);
@@ -136434,22 +140621,22 @@ SQLITE_PRIVATE int sqlite3Select(
 #endif
       sNC.ncFlags &= ~NC_InAggFunc;
     }
-    sAggInfo.mxReg = pParse->nMem;
+    pAggInfo->mxReg = pParse->nMem;
     if( db->mallocFailed ) goto select_end;
 #if SELECTTRACE_ENABLED
-    if( sqlite3SelectTrace & 0x400 ){
+    if( sqlite3_unsupported_selecttrace & 0x400 ){
       int ii;
-      SELECTTRACE(0x400,pParse,p,("After aggregate analysis:\n"));
+      SELECTTRACE(0x400,pParse,p,("After aggregate analysis %p:\n", pAggInfo));
       sqlite3TreeViewSelect(0, p, 0);
-      for(ii=0; ii<sAggInfo.nColumn; ii++){
+      for(ii=0; ii<pAggInfo->nColumn; ii++){
         sqlite3DebugPrintf("agg-column[%d] iMem=%d\n",
-            ii, sAggInfo.aCol[ii].iMem);
-        sqlite3TreeViewExpr(0, sAggInfo.aCol[ii].pExpr, 0);
+            ii, pAggInfo->aCol[ii].iMem);
+        sqlite3TreeViewExpr(0, pAggInfo->aCol[ii].pCExpr, 0);
       }
-      for(ii=0; ii<sAggInfo.nFunc; ii++){
+      for(ii=0; ii<pAggInfo->nFunc; ii++){
         sqlite3DebugPrintf("agg-func[%d]: iMem=%d\n",
-            ii, sAggInfo.aFunc[ii].iMem);
-        sqlite3TreeViewExpr(0, sAggInfo.aFunc[ii].pExpr, 0);
+            ii, pAggInfo->aFunc[ii].iMem);
+        sqlite3TreeViewExpr(0, pAggInfo->aFunc[ii].pFExpr, 0);
       }
     }
 #endif
@@ -136474,10 +140661,11 @@ SQLITE_PRIVATE int sqlite3Select(
       ** that we do not need it after all, the OP_SorterOpen instruction
       ** will be converted into a Noop.
       */
-      sAggInfo.sortingIdx = pParse->nTab++;
-      pKeyInfo = sqlite3KeyInfoFromExprList(pParse,pGroupBy,0,sAggInfo.nColumn);
+      pAggInfo->sortingIdx = pParse->nTab++;
+      pKeyInfo = sqlite3KeyInfoFromExprList(pParse, pGroupBy,
+                                            0, pAggInfo->nColumn);
       addrSortingIdx = sqlite3VdbeAddOp4(v, OP_SorterOpen,
-          sAggInfo.sortingIdx, sAggInfo.nSortingColumn,
+          pAggInfo->sortingIdx, pAggInfo->nSortingColumn,
           0, (char*)pKeyInfo, P4_KEYINFO);
 
       /* Initialize memory locations used by GROUP BY aggregate processing
@@ -136532,8 +140720,8 @@ SQLITE_PRIVATE int sqlite3Select(
         nGroupBy = pGroupBy->nExpr;
         nCol = nGroupBy;
         j = nGroupBy;
-        for(i=0; i<sAggInfo.nColumn; i++){
-          if( sAggInfo.aCol[i].iSorterColumn>=j ){
+        for(i=0; i<pAggInfo->nColumn; i++){
+          if( pAggInfo->aCol[i].iSorterColumn>=j ){
             nCol++;
             j++;
           }
@@ -136541,8 +140729,8 @@ SQLITE_PRIVATE int sqlite3Select(
         regBase = sqlite3GetTempRange(pParse, nCol);
         sqlite3ExprCodeExprList(pParse, pGroupBy, regBase, 0, 0);
         j = nGroupBy;
-        for(i=0; i<sAggInfo.nColumn; i++){
-          struct AggInfo_col *pCol = &sAggInfo.aCol[i];
+        for(i=0; i<pAggInfo->nColumn; i++){
+          struct AggInfo_col *pCol = &pAggInfo->aCol[i];
           if( pCol->iSorterColumn>=j ){
             int r1 = j + regBase;
             sqlite3ExprCodeGetColumnOfTable(v,
@@ -136552,16 +140740,16 @@ SQLITE_PRIVATE int sqlite3Select(
         }
         regRecord = sqlite3GetTempReg(pParse);
         sqlite3VdbeAddOp3(v, OP_MakeRecord, regBase, nCol, regRecord);
-        sqlite3VdbeAddOp2(v, OP_SorterInsert, sAggInfo.sortingIdx, regRecord);
+        sqlite3VdbeAddOp2(v, OP_SorterInsert, pAggInfo->sortingIdx, regRecord);
         sqlite3ReleaseTempReg(pParse, regRecord);
         sqlite3ReleaseTempRange(pParse, regBase, nCol);
         sqlite3WhereEnd(pWInfo);
-        sAggInfo.sortingIdxPTab = sortPTab = pParse->nTab++;
+        pAggInfo->sortingIdxPTab = sortPTab = pParse->nTab++;
         sortOut = sqlite3GetTempReg(pParse);
         sqlite3VdbeAddOp3(v, OP_OpenPseudo, sortPTab, sortOut, nCol);
-        sqlite3VdbeAddOp2(v, OP_SorterSort, sAggInfo.sortingIdx, addrEnd);
+        sqlite3VdbeAddOp2(v, OP_SorterSort, pAggInfo->sortingIdx, addrEnd);
         VdbeComment((v, "GROUP BY sort")); VdbeCoverage(v);
-        sAggInfo.useSortingIdx = 1;
+        pAggInfo->useSortingIdx = 1;
       }
 
       /* If the index or temporary table used by the GROUP BY sort
@@ -136585,14 +140773,14 @@ SQLITE_PRIVATE int sqlite3Select(
       */
       addrTopOfLoop = sqlite3VdbeCurrentAddr(v);
       if( groupBySort ){
-        sqlite3VdbeAddOp3(v, OP_SorterData, sAggInfo.sortingIdx,
+        sqlite3VdbeAddOp3(v, OP_SorterData, pAggInfo->sortingIdx,
                           sortOut, sortPTab);
       }
       for(j=0; j<pGroupBy->nExpr; j++){
         if( groupBySort ){
           sqlite3VdbeAddOp3(v, OP_Column, sortPTab, j, iBMem+j);
         }else{
-          sAggInfo.directMode = 1;
+          pAggInfo->directMode = 1;
           sqlite3ExprCode(pParse, pGroupBy->a[j].pExpr, iBMem+j);
         }
       }
@@ -136622,14 +140810,14 @@ SQLITE_PRIVATE int sqlite3Select(
       ** the current row
       */
       sqlite3VdbeJumpHere(v, addr1);
-      updateAccumulator(pParse, iUseFlag, &sAggInfo);
+      updateAccumulator(pParse, iUseFlag, pAggInfo);
       sqlite3VdbeAddOp2(v, OP_Integer, 1, iUseFlag);
       VdbeComment((v, "indicate data in accumulator"));
 
       /* End of the loop
       */
       if( groupBySort ){
-        sqlite3VdbeAddOp2(v, OP_SorterNext, sAggInfo.sortingIdx, addrTopOfLoop);
+        sqlite3VdbeAddOp2(v, OP_SorterNext, pAggInfo->sortingIdx, addrTopOfLoop);
         VdbeCoverage(v);
       }else{
         sqlite3WhereEnd(pWInfo);
@@ -136662,7 +140850,7 @@ SQLITE_PRIVATE int sqlite3Select(
       VdbeCoverage(v);
       VdbeComment((v, "Groupby result generator entry point"));
       sqlite3VdbeAddOp1(v, OP_Return, regOutputRow);
-      finalizeAggFunctions(pParse, &sAggInfo);
+      finalizeAggFunctions(pParse, pAggInfo);
       sqlite3ExprIfFalse(pParse, pHaving, addrOutputRow+1, SQLITE_JUMPIFNULL);
       selectInnerLoop(pParse, p, -1, &sSort,
                       &sDistinct, pDest,
@@ -136673,16 +140861,15 @@ SQLITE_PRIVATE int sqlite3Select(
       /* Generate a subroutine that will reset the group-by accumulator
       */
       sqlite3VdbeResolveLabel(v, addrReset);
-      resetAccumulator(pParse, &sAggInfo);
+      resetAccumulator(pParse, pAggInfo);
       sqlite3VdbeAddOp2(v, OP_Integer, 0, iUseFlag);
       VdbeComment((v, "indicate accumulator empty"));
       sqlite3VdbeAddOp1(v, OP_Return, regReset);
 
     } /* endif pGroupBy.  Begin aggregate queries without GROUP BY: */
     else {
-#ifndef SQLITE_OMIT_BTREECOUNT
       Table *pTab;
-      if( (pTab = isSimpleCount(p, &sAggInfo))!=0 ){
+      if( (pTab = isSimpleCount(p, pAggInfo))!=0 ){
         /* If isSimpleCount() returns a pointer to a Table structure, then
         ** the SQL statement is of the form:
         **
@@ -136701,7 +140888,7 @@ SQLITE_PRIVATE int sqlite3Select(
         Index *pIdx;                         /* Iterator variable */
         KeyInfo *pKeyInfo = 0;               /* Keyinfo for scanned index */
         Index *pBest = 0;                    /* Best index found so far */
-        int iRoot = pTab->tnum;              /* Root page of scanned b-tree */
+        Pgno iRoot = pTab->tnum;             /* Root page of scanned b-tree */
 
         sqlite3CodeVerifySchema(pParse, iDb);
         sqlite3TableLock(pParse, iDb, pTab->tnum, 0, pTab->zName);
@@ -136716,13 +140903,15 @@ SQLITE_PRIVATE int sqlite3Select(
         ** passed to keep OP_OpenRead happy.
         */
         if( !HasRowid(pTab) ) pBest = sqlite3PrimaryKeyIndex(pTab);
-        for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
-          if( pIdx->bUnordered==0
-           && pIdx->szIdxRow<pTab->szTabRow
-           && pIdx->pPartIdxWhere==0
-           && (!pBest || pIdx->szIdxRow<pBest->szIdxRow)
-          ){
-            pBest = pIdx;
+        if( !p->pSrc->a[0].fg.notIndexed ){
+          for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){
+            if( pIdx->bUnordered==0
+             && pIdx->szIdxRow<pTab->szTabRow
+             && pIdx->pPartIdxWhere==0
+             && (!pBest || pIdx->szIdxRow<pBest->szIdxRow)
+            ){
+              pBest = pIdx;
+            }
           }
         }
         if( pBest ){
@@ -136731,17 +140920,16 @@ SQLITE_PRIVATE int sqlite3Select(
         }
 
         /* Open a read-only cursor, execute the OP_Count, close the cursor. */
-        sqlite3VdbeAddOp4Int(v, OP_OpenRead, iCsr, iRoot, iDb, 1);
+        sqlite3VdbeAddOp4Int(v, OP_OpenRead, iCsr, (int)iRoot, iDb, 1);
         if( pKeyInfo ){
           sqlite3VdbeChangeP4(v, -1, (char *)pKeyInfo, P4_KEYINFO);
         }
-        sqlite3VdbeAddOp2(v, OP_Count, iCsr, sAggInfo.aFunc[0].iMem);
+        sqlite3VdbeAddOp2(v, OP_Count, iCsr, pAggInfo->aFunc[0].iMem);
         sqlite3VdbeAddOp1(v, OP_Close, iCsr);
         explainSimpleCount(pParse, pTab, pBest);
-      }else
-#endif /* SQLITE_OMIT_BTREECOUNT */
-      {
+      }else{
         int regAcc = 0;           /* "populate accumulators" flag */
+        int addrSkip;
 
         /* If there are accumulator registers but no min() or max() functions
         ** without FILTER clauses, allocate register regAcc. Register regAcc
@@ -136752,12 +140940,16 @@ SQLITE_PRIVATE int sqlite3Select(
         ** first row visited by the aggregate, so that they are updated at
         ** least once even if the FILTER clause means the min() or max()
         ** function visits zero rows.  */
-        if( sAggInfo.nAccumulator ){
-          for(i=0; i<sAggInfo.nFunc; i++){
-            if( ExprHasProperty(sAggInfo.aFunc[i].pExpr, EP_WinFunc) ) continue;
-            if( sAggInfo.aFunc[i].pFunc->funcFlags&SQLITE_FUNC_NEEDCOLL ) break;
+        if( pAggInfo->nAccumulator ){
+          for(i=0; i<pAggInfo->nFunc; i++){
+            if( ExprHasProperty(pAggInfo->aFunc[i].pFExpr, EP_WinFunc) ){
+              continue;
+            }
+            if( pAggInfo->aFunc[i].pFunc->funcFlags&SQLITE_FUNC_NEEDCOLL ){
+              break;
+            }
           }
-          if( i==sAggInfo.nFunc ){
+          if( i==pAggInfo->nFunc ){
             regAcc = ++pParse->nMem;
             sqlite3VdbeAddOp2(v, OP_Integer, 0, regAcc);
           }
@@ -136768,7 +140960,7 @@ SQLITE_PRIVATE int sqlite3Select(
         ** of output.
         */
         assert( p->pGroupBy==0 );
-        resetAccumulator(pParse, &sAggInfo);
+        resetAccumulator(pParse, pAggInfo);
 
         /* If this query is a candidate for the min/max optimization, then
         ** minMaxFlag will have been previously set to either
@@ -136784,15 +140976,14 @@ SQLITE_PRIVATE int sqlite3Select(
         if( pWInfo==0 ){
           goto select_end;
         }
-        updateAccumulator(pParse, regAcc, &sAggInfo);
+        updateAccumulator(pParse, regAcc, pAggInfo);
         if( regAcc ) sqlite3VdbeAddOp2(v, OP_Integer, 1, regAcc);
-        if( sqlite3WhereIsOrdered(pWInfo)>0 ){
-          sqlite3VdbeGoto(v, sqlite3WhereBreakLabel(pWInfo));
-          VdbeComment((v, "%s() by index",
-                (minMaxFlag==WHERE_ORDERBY_MIN?"min":"max")));
+        addrSkip = sqlite3WhereOrderByLimitOptLabel(pWInfo);
+        if( addrSkip!=sqlite3WhereContinueLabel(pWInfo) ){
+          sqlite3VdbeGoto(v, addrSkip);
         }
         sqlite3WhereEnd(pWInfo);
-        finalizeAggFunctions(pParse, &sAggInfo);
+        finalizeAggFunctions(pParse, pAggInfo);
       }
 
       sSort.pOrderBy = 0;
@@ -136831,11 +141022,28 @@ SQLITE_PRIVATE int sqlite3Select(
   */
 select_end:
   sqlite3ExprListDelete(db, pMinMaxOrderBy);
-  sqlite3DbFree(db, sAggInfo.aCol);
-  sqlite3DbFree(db, sAggInfo.aFunc);
+#ifdef SQLITE_DEBUG
+  if( pAggInfo && !db->mallocFailed ){
+    for(i=0; i<pAggInfo->nColumn; i++){
+      Expr *pExpr = pAggInfo->aCol[i].pCExpr;
+      assert( pExpr!=0 || db->mallocFailed );
+      if( pExpr==0 ) continue;
+      assert( pExpr->pAggInfo==pAggInfo );
+      assert( pExpr->iAgg==i );
+    }
+    for(i=0; i<pAggInfo->nFunc; i++){
+      Expr *pExpr = pAggInfo->aFunc[i].pFExpr;
+      assert( pExpr!=0 || db->mallocFailed );
+      if( pExpr==0 ) continue;
+      assert( pExpr->pAggInfo==pAggInfo );
+      assert( pExpr->iAgg==i );
+    }
+  }
+#endif
+
 #if SELECTTRACE_ENABLED
   SELECTTRACE(0x1,pParse,p,("end processing\n"));
-  if( (sqlite3SelectTrace & 0x2000)!=0 && ExplainQueryPlanParent(pParse)==0 ){
+  if( (sqlite3_unsupported_selecttrace & 0x2000)!=0 && ExplainQueryPlanParent(pParse)==0 ){
     sqlite3TreeViewSelect(0, p, 0);
   }
 #endif
@@ -136903,7 +141111,7 @@ static int sqlite3_get_table_cb(void *pArg, int nCol, char **argv, char **colv){
   if( p->nData + need > p->nAlloc ){
     char **azNew;
     p->nAlloc = p->nAlloc*2 + need;
-    azNew = sqlite3_realloc64( p->azResult, sizeof(char*)*p->nAlloc );
+    azNew = sqlite3Realloc( p->azResult, sizeof(char*)*p->nAlloc );
     if( azNew==0 ) goto malloc_failed;
     p->azResult = azNew;
   }
@@ -137012,7 +141220,7 @@ SQLITE_API int sqlite3_get_table(
   }
   if( res.nAlloc>res.nData ){
     char **azNew;
-    azNew = sqlite3_realloc64( res.azResult, sizeof(char*)*res.nData );
+    azNew = sqlite3Realloc( res.azResult, sizeof(char*)*res.nData );
     if( azNew==0 ){
       sqlite3_free_table(&res.azResult[1]);
       db->errCode = SQLITE_NOMEM;
@@ -137074,6 +141282,7 @@ SQLITE_PRIVATE void sqlite3DeleteTriggerStep(sqlite3 *db, TriggerStep *pTriggerS
     sqlite3SelectDelete(db, pTmp->pSelect);
     sqlite3IdListDelete(db, pTmp->pIdList);
     sqlite3UpsertDelete(db, pTmp->pUpsert);
+    sqlite3SrcListDelete(db, pTmp->pFrom);
     sqlite3DbFree(db, pTmp->zSpan);
 
     sqlite3DbFree(db, pTmp);
@@ -137176,7 +141385,7 @@ SQLITE_PRIVATE void sqlite3BeginTrigger(
   **                                                 ^^^^^^^^
   **
   ** To maintain backwards compatibility, ignore the database
-  ** name on pTableName if we are reparsing out of SQLITE_MASTER.
+  ** name on pTableName if we are reparsing out of the schema table
   */
   if( db->init.busy && iDb!=1 ){
     sqlite3DbFree(db, pTableName->a[0].zDatabase);
@@ -137366,21 +141575,22 @@ SQLITE_PRIVATE void sqlite3FinishTrigger(
 #endif
 
   /* if we are not initializing,
-  ** build the sqlite_master entry
+  ** build the sqlite_schema entry
   */
   if( !db->init.busy ){
     Vdbe *v;
     char *z;
 
-    /* Make an entry in the sqlite_master table */
+    /* Make an entry in the sqlite_schema table */
     v = sqlite3GetVdbe(pParse);
     if( v==0 ) goto triggerfinish_cleanup;
     sqlite3BeginWriteOperation(pParse, 0, iDb);
     z = sqlite3DbStrNDup(db, (char*)pAll->z, pAll->n);
     testcase( z==0 );
     sqlite3NestedParse(pParse,
-       "INSERT INTO %Q.%s VALUES('trigger',%Q,%Q,0,'CREATE TRIGGER %q')",
-       db->aDb[iDb].zDbSName, MASTER_NAME, zName,
+       "INSERT INTO %Q." DFLT_SCHEMA_TABLE
+       " VALUES('trigger',%Q,%Q,0,'CREATE TRIGGER %q')",
+       db->aDb[iDb].zDbSName, zName,
        pTrig->table, z);
     sqlite3DbFree(db, z);
     sqlite3ChangeCookie(pParse, iDb);
@@ -137533,6 +141743,7 @@ SQLITE_PRIVATE TriggerStep *sqlite3TriggerInsertStep(
 SQLITE_PRIVATE TriggerStep *sqlite3TriggerUpdateStep(
   Parse *pParse,          /* Parser */
   Token *pTableName,   /* Name of the table to be updated */
+  SrcList *pFrom,
   ExprList *pEList,    /* The SET clause: list of column and new values */
   Expr *pWhere,        /* The WHERE clause */
   u8 orconf,           /* The conflict algorithm. (OE_Abort, OE_Ignore, etc) */
@@ -137547,16 +141758,20 @@ SQLITE_PRIVATE TriggerStep *sqlite3TriggerUpdateStep(
     if( IN_RENAME_OBJECT ){
       pTriggerStep->pExprList = pEList;
       pTriggerStep->pWhere = pWhere;
+      pTriggerStep->pFrom = pFrom;
       pEList = 0;
       pWhere = 0;
+      pFrom = 0;
     }else{
       pTriggerStep->pExprList = sqlite3ExprListDup(db, pEList, EXPRDUP_REDUCE);
       pTriggerStep->pWhere = sqlite3ExprDup(db, pWhere, EXPRDUP_REDUCE);
+      pTriggerStep->pFrom = sqlite3SrcListDup(db, pFrom, EXPRDUP_REDUCE);
     }
     pTriggerStep->orconf = orconf;
   }
   sqlite3ExprListDelete(db, pEList);
   sqlite3ExprDelete(db, pWhere);
+  sqlite3SrcListDelete(db, pFrom);
   return pTriggerStep;
 }
 
@@ -137628,7 +141843,7 @@ SQLITE_PRIVATE void sqlite3DropTrigger(Parse *pParse, SrcList *pName, int noErr)
   assert( zDb!=0 || sqlite3BtreeHoldsAllMutexes(db) );
   for(i=OMIT_TEMPDB; i<db->nDb; i++){
     int j = (i<2) ? i^1 : i;  /* Search TEMP before MAIN */
-    if( zDb && sqlite3StrICmp(db->aDb[j].zDbSName, zDb) ) continue;
+    if( zDb && sqlite3DbIsNamed(db, j, zDb)==0 ) continue;
     assert( sqlite3SchemaMutexHeld(db, j, 0) );
     pTrigger = sqlite3HashFind(&(db->aDb[j].pSchema->trigHash), zName);
     if( pTrigger ) break;
@@ -137687,8 +141902,8 @@ SQLITE_PRIVATE void sqlite3DropTriggerPtr(Parse *pParse, Trigger *pTrigger){
   */
   if( (v = sqlite3GetVdbe(pParse))!=0 ){
     sqlite3NestedParse(pParse,
-       "DELETE FROM %Q.%s WHERE name=%Q AND type='trigger'",
-       db->aDb[iDb].zDbSName, MASTER_NAME, pTrigger->zName
+       "DELETE FROM %Q." DFLT_SCHEMA_TABLE " WHERE name=%Q AND type='trigger'",
+       db->aDb[iDb].zDbSName, pTrigger->zName
     );
     sqlite3ChangeCookie(pParse, iDb);
     sqlite3VdbeAddOp4(v, OP_DropTrigger, iDb, 0, 0, pTrigger->zName, 0);
@@ -137710,8 +141925,12 @@ SQLITE_PRIVATE void sqlite3UnlinkAndDeleteTrigger(sqlite3 *db, int iDb, const ch
       Table *pTab = tableOfTrigger(pTrigger);
       if( pTab ){
         Trigger **pp;
-        for(pp=&pTab->pTrigger; *pp!=pTrigger; pp=&((*pp)->pNext));
-        *pp = (*pp)->pNext;
+        for(pp=&pTab->pTrigger; *pp; pp=&((*pp)->pNext)){
+          if( *pp==pTrigger ){
+            *pp = (*pp)->pNext;
+            break;
+          }
+        }
       }
     }
     sqlite3DeleteTrigger(db, pTrigger);
@@ -137732,7 +141951,7 @@ static int checkColumnOverlap(IdList *pIdList, ExprList *pEList){
   int e;
   if( pIdList==0 || NEVER(pEList==0) ) return 1;
   for(e=0; e<pEList->nExpr; e++){
-    if( sqlite3IdListIndex(pIdList, pEList->a[e].zName)>=0 ) return 1;
+    if( sqlite3IdListIndex(pIdList, pEList->a[e].zEName)>=0 ) return 1;
   }
   return 0;
 }
@@ -137779,25 +141998,28 @@ SQLITE_PRIVATE Trigger *sqlite3TriggersExist(
 ** trigger is in TEMP in which case it can refer to any other database it
 ** wants.
 */
-static SrcList *targetSrcList(
+SQLITE_PRIVATE SrcList *sqlite3TriggerStepSrc(
   Parse *pParse,       /* The parsing context */
   TriggerStep *pStep   /* The trigger containing the target token */
 ){
   sqlite3 *db = pParse->db;
-  int iDb;             /* Index of the database to use */
-  SrcList *pSrc;       /* SrcList to be returned */
-
+  SrcList *pSrc;                  /* SrcList to be returned */
+  char *zName = sqlite3DbStrDup(db, pStep->zTarget);
   pSrc = sqlite3SrcListAppend(pParse, 0, 0, 0);
+  assert( pSrc==0 || pSrc->nSrc==1 );
+  assert( zName || pSrc==0 );
   if( pSrc ){
-    assert( pSrc->nSrc>0 );
-    pSrc->a[pSrc->nSrc-1].zName = sqlite3DbStrDup(db, pStep->zTarget);
-    iDb = sqlite3SchemaToIndex(db, pStep->pTrig->pSchema);
-    if( iDb==0 || iDb>=2 ){
-      const char *zDb;
-      assert( iDb<db->nDb );
-      zDb = db->aDb[iDb].zDbSName;
-      pSrc->a[pSrc->nSrc-1].zDatabase =  sqlite3DbStrDup(db, zDb);
+    Schema *pSchema = pStep->pTrig->pSchema;
+    pSrc->a[0].zName = zName;
+    if( pSchema!=db->aDb[1].pSchema ){
+      pSrc->a[0].pSchema = pSchema;
+    }
+    if( pStep->pFrom ){
+      SrcList *pDup = sqlite3SrcListDup(db, pStep->pFrom, 0);
+      pSrc = sqlite3SrcListAppendList(pParse, pSrc, pDup);
     }
+  }else{
+    sqlite3DbFree(db, zName);
   }
   return pSrc;
 }
@@ -137846,7 +142068,7 @@ static int codeTriggerProgram(
     switch( pStep->op ){
       case TK_UPDATE: {
         sqlite3Update(pParse,
-          targetSrcList(pParse, pStep),
+          sqlite3TriggerStepSrc(pParse, pStep),
           sqlite3ExprListDup(db, pStep->pExprList, 0),
           sqlite3ExprDup(db, pStep->pWhere, 0),
           pParse->eOrconf, 0, 0, 0
@@ -137855,7 +142077,7 @@ static int codeTriggerProgram(
       }
       case TK_INSERT: {
         sqlite3Insert(pParse,
-          targetSrcList(pParse, pStep),
+          sqlite3TriggerStepSrc(pParse, pStep),
           sqlite3SelectDup(db, pStep->pSelect, 0),
           sqlite3IdListDup(db, pStep->pIdList),
           pParse->eOrconf,
@@ -137865,7 +142087,7 @@ static int codeTriggerProgram(
       }
       case TK_DELETE: {
         sqlite3DeleteFrom(pParse,
-          targetSrcList(pParse, pStep),
+          sqlite3TriggerStepSrc(pParse, pStep),
           sqlite3ExprDup(db, pStep->pWhere, 0), 0, 0
         );
         break;
@@ -138291,17 +142513,17 @@ static void updateVirtualTable(
 ** literal default values specified: a number, null or a string. (If a more
 ** complicated default expression value was provided, it is evaluated
 ** when the ALTER TABLE is executed and one of the literal values written
-** into the sqlite_master table.)
+** into the sqlite_schema table.)
 **
 ** Therefore, the P4 parameter is only required if the default value for
 ** the column is a literal number, string or null. The sqlite3ValueFromExpr()
 ** function is capable of transforming these types of expressions into
 ** sqlite3_value objects.
 **
-** If parameter iReg is not negative, code an OP_RealAffinity instruction
-** on register iReg. This is used when an equivalent integer value is
-** stored in place of an 8-byte floating point value in order to save
-** space.
+** If column as REAL affinity and the table is an ordinary b-tree table
+** (not a virtual table) then the value might have been stored as an
+** integer.  In that case, add an OP_RealAffinity opcode to make sure
+** it has been converted into REAL.
 */
 SQLITE_PRIVATE void sqlite3ColumnDefault(Vdbe *v, Table *pTab, int i, int iReg){
   assert( pTab!=0 );
@@ -138318,7 +142540,7 @@ SQLITE_PRIVATE void sqlite3ColumnDefault(Vdbe *v, Table *pTab, int i, int iReg){
     }
   }
 #ifndef SQLITE_OMIT_FLOATING_POINT
-  if( pTab->aCol[i].affinity==SQLITE_AFF_REAL ){
+  if( pTab->aCol[i].affinity==SQLITE_AFF_REAL && !IsVirtual(pTab) ){
     sqlite3VdbeAddOp1(v, OP_RealAffinity, iReg);
   }
 #endif
@@ -138376,11 +142598,148 @@ static int indexWhereClauseMightChange(
 }
 
 /*
+** Allocate and return a pointer to an expression of type TK_ROW with
+** Expr.iColumn set to value (iCol+1). The resolver will modify the
+** expression to be a TK_COLUMN reading column iCol of the first
+** table in the source-list (pSrc->a[0]).
+*/
+static Expr *exprRowColumn(Parse *pParse, int iCol){
+  Expr *pRet = sqlite3PExpr(pParse, TK_ROW, 0, 0);
+  if( pRet ) pRet->iColumn = iCol+1;
+  return pRet;
+}
+
+/*
+** Assuming both the pLimit and pOrderBy parameters are NULL, this function
+** generates VM code to run the query:
+**
+**   SELECT <other-columns>, pChanges FROM pTabList WHERE pWhere
+**
+** and write the results to the ephemeral table already opened as cursor
+** iEph. None of pChanges, pTabList or pWhere are modified or consumed by
+** this function, they must be deleted by the caller.
+**
+** Or, if pLimit and pOrderBy are not NULL, and pTab is not a view:
+**
+**   SELECT <other-columns>, pChanges FROM pTabList
+**   WHERE pWhere
+**   GROUP BY <other-columns>
+**   ORDER BY pOrderBy LIMIT pLimit
+**
+** If pTab is a view, the GROUP BY clause is omitted.
+**
+** Exactly how results are written to table iEph, and exactly what
+** the <other-columns> in the query above are is determined by the type
+** of table pTabList->a[0].pTab.
+**
+** If the table is a WITHOUT ROWID table, then argument pPk must be its
+** PRIMARY KEY. In this case <other-columns> are the primary key columns
+** of the table, in order. The results of the query are written to ephemeral
+** table iEph as index keys, using OP_IdxInsert.
+**
+** If the table is actually a view, then <other-columns> are all columns of
+** the view. The results are written to the ephemeral table iEph as records
+** with automatically assigned integer keys.
+**
+** If the table is a virtual or ordinary intkey table, then <other-columns>
+** is its rowid. For a virtual table, the results are written to iEph as
+** records with automatically assigned integer keys For intkey tables, the
+** rowid value in <other-columns> is used as the integer key, and the
+** remaining fields make up the table record.
+*/
+static void updateFromSelect(
+  Parse *pParse,                  /* Parse context */
+  int iEph,                       /* Cursor for open eph. table */
+  Index *pPk,                     /* PK if table 0 is WITHOUT ROWID */
+  ExprList *pChanges,             /* List of expressions to return */
+  SrcList *pTabList,              /* List of tables to select from */
+  Expr *pWhere,                   /* WHERE clause for query */
+  ExprList *pOrderBy,             /* ORDER BY clause */
+  Expr *pLimit                    /* LIMIT clause */
+){
+  int i;
+  SelectDest dest;
+  Select *pSelect = 0;
+  ExprList *pList = 0;
+  ExprList *pGrp = 0;
+  Expr *pLimit2 = 0;
+  ExprList *pOrderBy2 = 0;
+  sqlite3 *db = pParse->db;
+  Table *pTab = pTabList->a[0].pTab;
+  SrcList *pSrc;
+  Expr *pWhere2;
+  int eDest;
+
+#ifdef SQLITE_ENABLE_UPDATE_DELETE_LIMIT
+  if( pOrderBy && pLimit==0 ) {
+    sqlite3ErrorMsg(pParse, "ORDER BY without LIMIT on UPDATE");
+    return;
+  }
+  pOrderBy2 = sqlite3ExprListDup(db, pOrderBy, 0);
+  pLimit2 = sqlite3ExprDup(db, pLimit, 0);
+#else
+  UNUSED_PARAMETER(pOrderBy);
+  UNUSED_PARAMETER(pLimit);
+#endif
+
+  pSrc = sqlite3SrcListDup(db, pTabList, 0);
+  pWhere2 = sqlite3ExprDup(db, pWhere, 0);
+
+  assert( pTabList->nSrc>1 );
+  if( pSrc ){
+    pSrc->a[0].iCursor = -1;
+    pSrc->a[0].pTab->nTabRef--;
+    pSrc->a[0].pTab = 0;
+  }
+  if( pPk ){
+    for(i=0; i<pPk->nKeyCol; i++){
+      Expr *pNew = exprRowColumn(pParse, pPk->aiColumn[i]);
+#ifdef SQLITE_ENABLE_UPDATE_DELETE_LIMIT
+      if( pLimit ){
+        pGrp = sqlite3ExprListAppend(pParse, pGrp, sqlite3ExprDup(db, pNew, 0));
+      }
+#endif
+      pList = sqlite3ExprListAppend(pParse, pList, pNew);
+    }
+    eDest = SRT_Upfrom;
+  }else if( pTab->pSelect ){
+    for(i=0; i<pTab->nCol; i++){
+      pList = sqlite3ExprListAppend(pParse, pList, exprRowColumn(pParse, i));
+    }
+    eDest = SRT_Table;
+  }else{
+    eDest = IsVirtual(pTab) ? SRT_Table : SRT_Upfrom;
+    pList = sqlite3ExprListAppend(pParse, 0, sqlite3PExpr(pParse,TK_ROW,0,0));
+#ifdef SQLITE_ENABLE_UPDATE_DELETE_LIMIT
+    if( pLimit ){
+      pGrp = sqlite3ExprListAppend(pParse, 0, sqlite3PExpr(pParse,TK_ROW,0,0));
+    }
+#endif
+  }
+  if( ALWAYS(pChanges) ){
+    for(i=0; i<pChanges->nExpr; i++){
+      pList = sqlite3ExprListAppend(pParse, pList,
+          sqlite3ExprDup(db, pChanges->a[i].pExpr, 0)
+      );
+    }
+  }
+  pSelect = sqlite3SelectNew(pParse, pList,
+      pSrc, pWhere2, pGrp, 0, pOrderBy2, SF_UpdateFrom|SF_IncludeHidden, pLimit2
+  );
+  sqlite3SelectDestInit(&dest, eDest, iEph);
+  dest.iSDParm2 = (pPk ? pPk->nKeyCol : -1);
+  sqlite3Select(pParse, pSelect, &dest);
+  sqlite3SelectDelete(db, pSelect);
+}
+
+/*
 ** Process an UPDATE statement.
 **
-**   UPDATE OR IGNORE table_wxyz SET a=b, c=d WHERE e<5 AND f NOT NULL;
-**          \_______/ \________/     \______/       \________________/
-*            onError   pTabList      pChanges             pWhere
+**   UPDATE OR IGNORE tbl SET a=b, c=d FROM tbl2... WHERE e<5 AND f NOT NULL;
+**          \_______/ \_/     \______/      \_____/       \________________/
+**           onError   |      pChanges         |                pWhere
+**                     \_______________________/
+**                               pTabList
 */
 SQLITE_PRIVATE void sqlite3Update(
   Parse *pParse,         /* The parser context */
@@ -138392,10 +142751,10 @@ SQLITE_PRIVATE void sqlite3Update(
   Expr *pLimit,          /* LIMIT clause. May be null */
   Upsert *pUpsert        /* ON CONFLICT clause, or null */
 ){
-  int i, j;              /* Loop counters */
+  int i, j, k;           /* Loop counters */
   Table *pTab;           /* The table to be updated */
   int addrTop = 0;       /* VDBE instruction address of the start of the loop */
-  WhereInfo *pWInfo;     /* Information about the WHERE clause */
+  WhereInfo *pWInfo = 0; /* Information about the WHERE clause */
   Vdbe *v;               /* The virtual database engine */
   Index *pIdx;           /* For looping over indices */
   Index *pPk;            /* The PRIMARY KEY index for WITHOUT ROWID tables */
@@ -138414,6 +142773,7 @@ SQLITE_PRIVATE void sqlite3Update(
   u8 chngRowid;          /* Rowid changed in a normal table */
   u8 chngKey;            /* Either chngPk or chngRowid */
   Expr *pRowidExpr = 0;  /* Expression defining the new record number */
+  int iRowidExpr = -1;   /* Index of "rowid=" (or IPK) assignment in pChanges */
   AuthContext sContext;  /* The authorization context */
   NameContext sNC;       /* The name-context to resolve expressions in */
   int iDb;               /* Database containing the table being updated */
@@ -138436,6 +142796,8 @@ SQLITE_PRIVATE void sqlite3Update(
   int iPk = 0;           /* First of nPk cells holding PRIMARY KEY value */
   i16 nPk = 0;           /* Number of components of the PRIMARY KEY */
   int bReplace = 0;      /* True if REPLACE conflict resolution might happen */
+  int bFinishSeek = 1;   /* The OP_FinishSeek opcode is needed */
+  int nChangeFrom = 0;   /* If there is a FROM, pChanges->nExpr, else 0 */
 
   /* Register Allocations */
   int regRowCount = 0;   /* A count of rows changed */
@@ -138451,7 +142813,6 @@ SQLITE_PRIVATE void sqlite3Update(
   if( pParse->nErr || db->mallocFailed ){
     goto update_cleanup;
   }
-  assert( pTabList->nSrc==1 );
 
   /* Locate the table which we want to update.
   */
@@ -138476,8 +142837,15 @@ SQLITE_PRIVATE void sqlite3Update(
 # define isView 0
 #endif
 
+  /* If there was a FROM clause, set nChangeFrom to the number of expressions
+  ** in the change-list. Otherwise, set it to 0. There cannot be a FROM
+  ** clause if this function is being called to generate code for part of
+  ** an UPSERT statement.  */
+  nChangeFrom = (pTabList->nSrc>1) ? pChanges->nExpr : 0;
+  assert( nChangeFrom==0 || pUpsert==0 );
+
 #ifdef SQLITE_ENABLE_UPDATE_DELETE_LIMIT
-  if( !isView ){
+  if( !isView && nChangeFrom==0 ){
     pWhere = sqlite3LimitWhere(
         pParse, pTabList, pWhere, pOrderBy, pLimit, "UPDATE"
     );
@@ -138534,6 +142902,10 @@ SQLITE_PRIVATE void sqlite3Update(
   sNC.uNC.pUpsert = pUpsert;
   sNC.ncFlags = NC_UUpsert;
 
+  /* Begin generating code. */
+  v = sqlite3GetVdbe(pParse);
+  if( v==0 ) goto update_cleanup;
+
   /* Resolve the column names in all the expressions of the
   ** of the UPDATE statement.  Also find the column index
   ** for each column to be updated in the pChanges array.  For each
@@ -138542,28 +142914,42 @@ SQLITE_PRIVATE void sqlite3Update(
   */
   chngRowid = chngPk = 0;
   for(i=0; i<pChanges->nExpr; i++){
-    if( sqlite3ResolveExprNames(&sNC, pChanges->a[i].pExpr) ){
+    /* If this is an UPDATE with a FROM clause, do not resolve expressions
+    ** here. The call to sqlite3Select() below will do that. */
+    if( nChangeFrom==0 && sqlite3ResolveExprNames(&sNC, pChanges->a[i].pExpr) ){
       goto update_cleanup;
     }
     for(j=0; j<pTab->nCol; j++){
-      if( sqlite3StrICmp(pTab->aCol[j].zName, pChanges->a[i].zName)==0 ){
+      if( sqlite3StrICmp(pTab->aCol[j].zName, pChanges->a[i].zEName)==0 ){
         if( j==pTab->iPKey ){
           chngRowid = 1;
           pRowidExpr = pChanges->a[i].pExpr;
+          iRowidExpr = i;
         }else if( pPk && (pTab->aCol[j].colFlags & COLFLAG_PRIMKEY)!=0 ){
           chngPk = 1;
         }
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+        else if( pTab->aCol[j].colFlags & COLFLAG_GENERATED ){
+          testcase( pTab->aCol[j].colFlags & COLFLAG_VIRTUAL );
+          testcase( pTab->aCol[j].colFlags & COLFLAG_STORED );
+          sqlite3ErrorMsg(pParse,
+             "cannot UPDATE generated column \"%s\"",
+             pTab->aCol[j].zName);
+          goto update_cleanup;
+        }
+#endif
         aXRef[j] = i;
         break;
       }
     }
     if( j>=pTab->nCol ){
-      if( pPk==0 && sqlite3IsRowid(pChanges->a[i].zName) ){
+      if( pPk==0 && sqlite3IsRowid(pChanges->a[i].zEName) ){
         j = -1;
         chngRowid = 1;
         pRowidExpr = pChanges->a[i].pExpr;
+        iRowidExpr = i;
       }else{
-        sqlite3ErrorMsg(pParse, "no such column: %s", pChanges->a[i].zName);
+        sqlite3ErrorMsg(pParse, "no such column: %s", pChanges->a[i].zEName);
         pParse->checkSchema = 1;
         goto update_cleanup;
       }
@@ -138587,6 +142973,33 @@ SQLITE_PRIVATE void sqlite3Update(
   assert( chngPk==0 || chngPk==1 );
   chngKey = chngRowid + chngPk;
 
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+  /* Mark generated columns as changing if their generator expressions
+  ** reference any changing column.  The actual aXRef[] value for
+  ** generated expressions is not used, other than to check to see that it
+  ** is non-negative, so the value of aXRef[] for generated columns can be
+  ** set to any non-negative number.  We use 99999 so that the value is
+  ** obvious when looking at aXRef[] in a symbolic debugger.
+  */
+  if( pTab->tabFlags & TF_HasGenerated ){
+    int bProgress;
+    testcase( pTab->tabFlags & TF_HasVirtual );
+    testcase( pTab->tabFlags & TF_HasStored );
+    do{
+      bProgress = 0;
+      for(i=0; i<pTab->nCol; i++){
+        if( aXRef[i]>=0 ) continue;
+        if( (pTab->aCol[i].colFlags & COLFLAG_GENERATED)==0 ) continue;
+        if( sqlite3ExprReferencesUpdatedColumn(pTab->aCol[i].pDflt,
+                                               aXRef, chngRowid) ){
+          aXRef[i] = 99999;
+          bProgress = 1;
+        }
+      }
+    }while( bProgress );
+  }
+#endif
+
   /* The SET expressions are not actually used inside the WHERE loop.
   ** So reset the colUsed mask. Unless this is a virtual table. In that
   ** case, set all bits of the colUsed mask (to ensure that the virtual
@@ -138631,9 +143044,6 @@ SQLITE_PRIVATE void sqlite3Update(
     memset(aToOpen, 1, nIdx+1);
   }
 
-  /* Begin generating code. */
-  v = sqlite3GetVdbe(pParse);
-  if( v==0 ) goto update_cleanup;
   if( pParse->nested==0 ) sqlite3VdbeCountChanges(v);
   sqlite3BeginWriteOperation(pParse, pTrigger || hasFK, iDb);
 
@@ -138667,7 +143077,7 @@ SQLITE_PRIVATE void sqlite3Update(
   ** an ephemeral table.
   */
 #if !defined(SQLITE_OMIT_VIEW) && !defined(SQLITE_OMIT_TRIGGER)
-  if( isView ){
+  if( nChangeFrom==0 && isView ){
     sqlite3MaterializeView(pParse, pTab,
         pWhere, pOrderBy, pLimit, iDataCur
     );
@@ -138679,7 +143089,7 @@ SQLITE_PRIVATE void sqlite3Update(
   /* Resolve the column names in all the expressions in the
   ** WHERE clause.
   */
-  if( sqlite3ResolveExprNames(&sNC, pWhere) ){
+  if( nChangeFrom==0 && sqlite3ResolveExprNames(&sNC, pWhere) ){
     goto update_cleanup;
   }
 
@@ -138706,102 +143116,128 @@ SQLITE_PRIVATE void sqlite3Update(
     sqlite3VdbeAddOp2(v, OP_Integer, 0, regRowCount);
   }
 
-  if( HasRowid(pTab) ){
+  if( nChangeFrom==0 && HasRowid(pTab) ){
     sqlite3VdbeAddOp3(v, OP_Null, 0, regRowSet, regOldRowid);
   }else{
-    assert( pPk!=0 );
-    nPk = pPk->nKeyCol;
+    assert( pPk!=0 || HasRowid(pTab) );
+    nPk = pPk ? pPk->nKeyCol : 0;
     iPk = pParse->nMem+1;
     pParse->nMem += nPk;
+    pParse->nMem += nChangeFrom;
     regKey = ++pParse->nMem;
     if( pUpsert==0 ){
+      int nEphCol = nPk + nChangeFrom + (isView ? pTab->nCol : 0);
       iEph = pParse->nTab++;
-        sqlite3VdbeAddOp3(v, OP_Null, 0, iPk, iPk+nPk-1);
-      addrOpen = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, iEph, nPk);
-      sqlite3VdbeSetP4KeyInfo(pParse, pPk);
+      if( pPk ) sqlite3VdbeAddOp3(v, OP_Null, 0, iPk, iPk+nPk-1);
+      addrOpen = sqlite3VdbeAddOp2(v, OP_OpenEphemeral, iEph, nEphCol);
+      if( pPk ){
+        KeyInfo *pKeyInfo = sqlite3KeyInfoOfIndex(pParse, pPk);
+        if( pKeyInfo ){
+          pKeyInfo->nAllField = nEphCol;
+          sqlite3VdbeAppendP4(v, pKeyInfo, P4_KEYINFO);
+        }
+      }
+      if( nChangeFrom ){
+        updateFromSelect(
+            pParse, iEph, pPk, pChanges, pTabList, pWhere, pOrderBy, pLimit
+        );
+#ifndef SQLITE_OMIT_SUBQUERY
+        if( isView ) iDataCur = iEph;
+#endif
+      }
     }
   }
 
-  if( pUpsert ){
-    /* If this is an UPSERT, then all cursors have already been opened by
-    ** the outer INSERT and the data cursor should be pointing at the row
-    ** that is to be updated.  So bypass the code that searches for the
-    ** row(s) to be updated.
-    */
-    pWInfo = 0;
-    eOnePass = ONEPASS_SINGLE;
-    sqlite3ExprIfFalse(pParse, pWhere, labelBreak, SQLITE_JUMPIFNULL);
+  if( nChangeFrom ){
+    sqlite3MultiWrite(pParse);
+    eOnePass = ONEPASS_OFF;
+    nKey = nPk;
+    regKey = iPk;
   }else{
-    /* Begin the database scan.
-    **
-    ** Do not consider a single-pass strategy for a multi-row update if
-    ** there are any triggers or foreign keys to process, or rows may
-    ** be deleted as a result of REPLACE conflict handling. Any of these
-    ** things might disturb a cursor being used to scan through the table
-    ** or index, causing a single-pass approach to malfunction.  */
-    flags = WHERE_ONEPASS_DESIRED|WHERE_SEEK_UNIQ_TABLE;
-    if( !pParse->nested && !pTrigger && !hasFK && !chngKey && !bReplace ){
-      flags |= WHERE_ONEPASS_MULTIROW;
-    }
-    pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, 0, 0, flags, iIdxCur);
-    if( pWInfo==0 ) goto update_cleanup;
-
-    /* A one-pass strategy that might update more than one row may not
-    ** be used if any column of the index used for the scan is being
-    ** updated. Otherwise, if there is an index on "b", statements like
-    ** the following could create an infinite loop:
-    **
-    **   UPDATE t1 SET b=b+1 WHERE b>?
-    **
-    ** Fall back to ONEPASS_OFF if where.c has selected a ONEPASS_MULTI
-    ** strategy that uses an index for which one or more columns are being
-    ** updated.  */
-    eOnePass = sqlite3WhereOkOnePass(pWInfo, aiCurOnePass);
-    if( eOnePass!=ONEPASS_SINGLE ){
-      sqlite3MultiWrite(pParse);
-      if( eOnePass==ONEPASS_MULTI ){
-        int iCur = aiCurOnePass[1];
-        if( iCur>=0 && iCur!=iDataCur && aToOpen[iCur-iBaseCur] ){
-          eOnePass = ONEPASS_OFF;
+    if( pUpsert ){
+      /* If this is an UPSERT, then all cursors have already been opened by
+      ** the outer INSERT and the data cursor should be pointing at the row
+      ** that is to be updated.  So bypass the code that searches for the
+      ** row(s) to be updated.
+      */
+      pWInfo = 0;
+      eOnePass = ONEPASS_SINGLE;
+      sqlite3ExprIfFalse(pParse, pWhere, labelBreak, SQLITE_JUMPIFNULL);
+      bFinishSeek = 0;
+    }else{
+      /* Begin the database scan.
+      **
+      ** Do not consider a single-pass strategy for a multi-row update if
+      ** there are any triggers or foreign keys to process, or rows may
+      ** be deleted as a result of REPLACE conflict handling. Any of these
+      ** things might disturb a cursor being used to scan through the table
+      ** or index, causing a single-pass approach to malfunction.  */
+      flags = WHERE_ONEPASS_DESIRED|WHERE_SEEK_UNIQ_TABLE;
+      if( !pParse->nested && !pTrigger && !hasFK && !chngKey && !bReplace ){
+        flags |= WHERE_ONEPASS_MULTIROW;
+      }
+      pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, 0, 0, flags,iIdxCur);
+      if( pWInfo==0 ) goto update_cleanup;
+
+      /* A one-pass strategy that might update more than one row may not
+      ** be used if any column of the index used for the scan is being
+      ** updated. Otherwise, if there is an index on "b", statements like
+      ** the following could create an infinite loop:
+      **
+      **   UPDATE t1 SET b=b+1 WHERE b>?
+      **
+      ** Fall back to ONEPASS_OFF if where.c has selected a ONEPASS_MULTI
+      ** strategy that uses an index for which one or more columns are being
+      ** updated.  */
+      eOnePass = sqlite3WhereOkOnePass(pWInfo, aiCurOnePass);
+      bFinishSeek = sqlite3WhereUsesDeferredSeek(pWInfo);
+      if( eOnePass!=ONEPASS_SINGLE ){
+        sqlite3MultiWrite(pParse);
+        if( eOnePass==ONEPASS_MULTI ){
+          int iCur = aiCurOnePass[1];
+          if( iCur>=0 && iCur!=iDataCur && aToOpen[iCur-iBaseCur] ){
+            eOnePass = ONEPASS_OFF;
+          }
+          assert( iCur!=iDataCur || !HasRowid(pTab) );
         }
-        assert( iCur!=iDataCur || !HasRowid(pTab) );
       }
     }
-  }
 
-  if( HasRowid(pTab) ){
-    /* Read the rowid of the current row of the WHERE scan. In ONEPASS_OFF
-    ** mode, write the rowid into the FIFO. In either of the one-pass modes,
-    ** leave it in register regOldRowid.  */
-    sqlite3VdbeAddOp2(v, OP_Rowid, iDataCur, regOldRowid);
-    if( eOnePass==ONEPASS_OFF ){
-      /* We need to use regRowSet, so reallocate aRegIdx[nAllIdx] */
-      aRegIdx[nAllIdx] = ++pParse->nMem;
-      sqlite3VdbeAddOp2(v, OP_RowSetAdd, regRowSet, regOldRowid);
-    }
-  }else{
-    /* Read the PK of the current row into an array of registers. In
-    ** ONEPASS_OFF mode, serialize the array into a record and store it in
-    ** the ephemeral table. Or, in ONEPASS_SINGLE or MULTI mode, change
-    ** the OP_OpenEphemeral instruction to a Noop (the ephemeral table
-    ** is not required) and leave the PK fields in the array of registers.  */
-    for(i=0; i<nPk; i++){
-      assert( pPk->aiColumn[i]>=0 );
-      sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur,pPk->aiColumn[i],iPk+i);
-    }
-    if( eOnePass ){
-      if( addrOpen ) sqlite3VdbeChangeToNoop(v, addrOpen);
-      nKey = nPk;
-      regKey = iPk;
-    }else{
-      sqlite3VdbeAddOp4(v, OP_MakeRecord, iPk, nPk, regKey,
-                        sqlite3IndexAffinityStr(db, pPk), nPk);
-      sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iEph, regKey, iPk, nPk);
+    if( HasRowid(pTab) ){
+      /* Read the rowid of the current row of the WHERE scan. In ONEPASS_OFF
+      ** mode, write the rowid into the FIFO. In either of the one-pass modes,
+      ** leave it in register regOldRowid.  */
+      sqlite3VdbeAddOp2(v, OP_Rowid, iDataCur, regOldRowid);
+      if( eOnePass==ONEPASS_OFF ){
+        /* We need to use regRowSet, so reallocate aRegIdx[nAllIdx] */
+        aRegIdx[nAllIdx] = ++pParse->nMem;
+        sqlite3VdbeAddOp2(v, OP_RowSetAdd, regRowSet, regOldRowid);
+      }
+    }else{
+      /* Read the PK of the current row into an array of registers. In
+      ** ONEPASS_OFF mode, serialize the array into a record and store it in
+      ** the ephemeral table. Or, in ONEPASS_SINGLE or MULTI mode, change
+      ** the OP_OpenEphemeral instruction to a Noop (the ephemeral table
+      ** is not required) and leave the PK fields in the array of registers.  */
+      for(i=0; i<nPk; i++){
+        assert( pPk->aiColumn[i]>=0 );
+        sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur,
+                                        pPk->aiColumn[i], iPk+i);
+      }
+      if( eOnePass ){
+        if( addrOpen ) sqlite3VdbeChangeToNoop(v, addrOpen);
+        nKey = nPk;
+        regKey = iPk;
+      }else{
+        sqlite3VdbeAddOp4(v, OP_MakeRecord, iPk, nPk, regKey,
+                          sqlite3IndexAffinityStr(db, pPk), nPk);
+        sqlite3VdbeAddOp4Int(v, OP_IdxInsert, iEph, regKey, iPk, nPk);
+      }
     }
   }
 
   if( pUpsert==0 ){
-    if( eOnePass!=ONEPASS_MULTI ){
+    if( nChangeFrom==0 && eOnePass!=ONEPASS_MULTI ){
       sqlite3WhereEnd(pWInfo);
     }
 
@@ -138819,7 +143255,9 @@ SQLITE_PRIVATE void sqlite3Update(
       }
       sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenWrite, 0, iBaseCur,
                                  aToOpen, 0, 0);
-      if( addrOnce ) sqlite3VdbeJumpHere(v, addrOnce);
+      if( addrOnce ){
+        sqlite3VdbeJumpHereOrPopInst(v, addrOnce);
+      }
     }
 
     /* Top of the update loop */
@@ -138835,12 +143273,31 @@ SQLITE_PRIVATE void sqlite3Update(
       sqlite3VdbeAddOp2(v, OP_IsNull, pPk ? regKey : regOldRowid, labelBreak);
       VdbeCoverageIf(v, pPk==0);
       VdbeCoverageIf(v, pPk!=0);
-    }else if( pPk ){
+    }else if( pPk || nChangeFrom ){
       labelContinue = sqlite3VdbeMakeLabel(pParse);
       sqlite3VdbeAddOp2(v, OP_Rewind, iEph, labelBreak); VdbeCoverage(v);
-      addrTop = sqlite3VdbeAddOp2(v, OP_RowData, iEph, regKey);
-      sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, labelContinue, regKey, 0);
-      VdbeCoverage(v);
+      addrTop = sqlite3VdbeCurrentAddr(v);
+      if( nChangeFrom ){
+        if( !isView ){
+          if( pPk ){
+            for(i=0; i<nPk; i++){
+              sqlite3VdbeAddOp3(v, OP_Column, iEph, i, iPk+i);
+            }
+            sqlite3VdbeAddOp4Int(
+                v, OP_NotFound, iDataCur, labelContinue, iPk, nPk
+            ); VdbeCoverage(v);
+          }else{
+            sqlite3VdbeAddOp2(v, OP_Rowid, iEph, regOldRowid);
+            sqlite3VdbeAddOp3(
+                v, OP_NotExists, iDataCur, labelContinue, regOldRowid
+            ); VdbeCoverage(v);
+          }
+        }
+      }else{
+        sqlite3VdbeAddOp2(v, OP_RowData, iEph, regKey);
+        sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, labelContinue, regKey,0);
+        VdbeCoverage(v);
+      }
     }else{
       labelContinue = sqlite3VdbeAddOp3(v, OP_RowSetRead, regRowSet,labelBreak,
                                regOldRowid);
@@ -138856,7 +143313,12 @@ SQLITE_PRIVATE void sqlite3Update(
   ** already populated.  */
   assert( chngKey || pTrigger || hasFK || regOldRowid==regNewRowid );
   if( chngRowid ){
-    sqlite3ExprCode(pParse, pRowidExpr, regNewRowid);
+    assert( iRowidExpr>=0 );
+    if( nChangeFrom==0 ){
+      sqlite3ExprCode(pParse, pRowidExpr, regNewRowid);
+    }else{
+      sqlite3VdbeAddOp3(v, OP_Column, iEph, iRowidExpr, regNewRowid);
+    }
     sqlite3VdbeAddOp1(v, OP_MustBeInt, regNewRowid); VdbeCoverage(v);
   }
 
@@ -138868,14 +143330,16 @@ SQLITE_PRIVATE void sqlite3Update(
         pTrigger, pChanges, 0, TRIGGER_BEFORE|TRIGGER_AFTER, pTab, onError
     );
     for(i=0; i<pTab->nCol; i++){
+      u32 colFlags = pTab->aCol[i].colFlags;
+      k = sqlite3TableColumnToStorage(pTab, i) + regOld;
       if( oldmask==0xffffffff
        || (i<32 && (oldmask & MASKBIT32(i))!=0)
-       || (pTab->aCol[i].colFlags & COLFLAG_PRIMKEY)!=0
+       || (colFlags & COLFLAG_PRIMKEY)!=0
       ){
         testcase(  oldmask!=0xffffffff && i==31 );
-        sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, i, regOld+i);
+        sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, i, k);
       }else{
-        sqlite3VdbeAddOp2(v, OP_Null, 0, regOld+i);
+        sqlite3VdbeAddOp2(v, OP_Null, 0, k);
       }
     }
     if( chngRowid==0 && pPk==0 ){
@@ -138899,13 +143363,21 @@ SQLITE_PRIVATE void sqlite3Update(
   newmask = sqlite3TriggerColmask(
       pParse, pTrigger, pChanges, 1, TRIGGER_BEFORE, pTab, onError
   );
-  for(i=0; i<pTab->nCol; i++){
+  for(i=0, k=regNew; i<pTab->nCol; i++, k++){
     if( i==pTab->iPKey ){
-      sqlite3VdbeAddOp2(v, OP_Null, 0, regNew+i);
+      sqlite3VdbeAddOp2(v, OP_Null, 0, k);
+    }else if( (pTab->aCol[i].colFlags & COLFLAG_GENERATED)!=0 ){
+      if( pTab->aCol[i].colFlags & COLFLAG_VIRTUAL ) k--;
     }else{
       j = aXRef[i];
       if( j>=0 ){
-        sqlite3ExprCode(pParse, pChanges->a[j].pExpr, regNew+i);
+        if( nChangeFrom ){
+          int nOff = (isView ? pTab->nCol : nPk);
+          assert( eOnePass==ONEPASS_OFF );
+          sqlite3VdbeAddOp3(v, OP_Column, iEph, nOff+j, k);
+        }else{
+          sqlite3ExprCode(pParse, pChanges->a[j].pExpr, k);
+        }
       }else if( 0==(tmask&TRIGGER_BEFORE) || i>31 || (newmask & MASKBIT32(i)) ){
         /* This branch loads the value of a column that will not be changed
         ** into a register. This is done if there are no BEFORE triggers, or
@@ -138914,12 +143386,20 @@ SQLITE_PRIVATE void sqlite3Update(
         */
         testcase( i==31 );
         testcase( i==32 );
-        sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, i, regNew+i);
+        sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, i, k);
+        bFinishSeek = 0;
       }else{
-        sqlite3VdbeAddOp2(v, OP_Null, 0, regNew+i);
+        sqlite3VdbeAddOp2(v, OP_Null, 0, k);
       }
     }
   }
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+  if( pTab->tabFlags & TF_HasGenerated ){
+    testcase( pTab->tabFlags & TF_HasVirtual );
+    testcase( pTab->tabFlags & TF_HasStored );
+    sqlite3ComputeGeneratedColumns(pParse, regNew, pTab);
+  }
+#endif
 
   /* Fire any BEFORE UPDATE triggers. This happens before constraints are
   ** verified. One could argue that this is wrong.
@@ -138929,33 +143409,44 @@ SQLITE_PRIVATE void sqlite3Update(
     sqlite3CodeRowTrigger(pParse, pTrigger, TK_UPDATE, pChanges,
         TRIGGER_BEFORE, pTab, regOldRowid, onError, labelContinue);
 
-    /* The row-trigger may have deleted the row being updated. In this
-    ** case, jump to the next row. No updates or AFTER triggers are
-    ** required. This behavior - what happens when the row being updated
-    ** is deleted or renamed by a BEFORE trigger - is left undefined in the
-    ** documentation.
-    */
-    if( pPk ){
-      sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, labelContinue,regKey,nKey);
-      VdbeCoverage(v);
-    }else{
-      sqlite3VdbeAddOp3(v, OP_NotExists, iDataCur, labelContinue, regOldRowid);
-      VdbeCoverage(v);
-    }
+    if( !isView ){
+      /* The row-trigger may have deleted the row being updated. In this
+      ** case, jump to the next row. No updates or AFTER triggers are
+      ** required. This behavior - what happens when the row being updated
+      ** is deleted or renamed by a BEFORE trigger - is left undefined in the
+      ** documentation.
+      */
+      if( pPk ){
+        sqlite3VdbeAddOp4Int(v, OP_NotFound,iDataCur,labelContinue,regKey,nKey);
+        VdbeCoverage(v);
+      }else{
+        sqlite3VdbeAddOp3(v, OP_NotExists, iDataCur, labelContinue,regOldRowid);
+        VdbeCoverage(v);
+      }
 
-    /* After-BEFORE-trigger-reload-loop:
-    ** If it did not delete it, the BEFORE trigger may still have modified
-    ** some of the columns of the row being updated. Load the values for
-    ** all columns not modified by the update statement into their registers
-    ** in case this has happened. Only unmodified columns are reloaded.
-    ** The values computed for modified columns use the values before the
-    ** BEFORE trigger runs.  See test case trigger1-18.0 (added 2018-04-26)
-    ** for an example.
-    */
-    for(i=0; i<pTab->nCol; i++){
-      if( aXRef[i]<0 && i!=pTab->iPKey ){
-        sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, i, regNew+i);
+      /* After-BEFORE-trigger-reload-loop:
+      ** If it did not delete it, the BEFORE trigger may still have modified
+      ** some of the columns of the row being updated. Load the values for
+      ** all columns not modified by the update statement into their registers
+      ** in case this has happened. Only unmodified columns are reloaded.
+      ** The values computed for modified columns use the values before the
+      ** BEFORE trigger runs.  See test case trigger1-18.0 (added 2018-04-26)
+      ** for an example.
+      */
+      for(i=0, k=regNew; i<pTab->nCol; i++, k++){
+        if( pTab->aCol[i].colFlags & COLFLAG_GENERATED ){
+          if( pTab->aCol[i].colFlags & COLFLAG_VIRTUAL ) k--;
+        }else if( aXRef[i]<0 && i!=pTab->iPKey ){
+          sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, i, k);
+        }
       }
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+      if( pTab->tabFlags & TF_HasGenerated ){
+        testcase( pTab->tabFlags & TF_HasVirtual );
+        testcase( pTab->tabFlags & TF_HasStored );
+        sqlite3ComputeGeneratedColumns(pParse, regNew, pTab);
+      }
+#endif
     }
   }
 
@@ -138986,6 +143477,15 @@ SQLITE_PRIVATE void sqlite3Update(
     /* Delete the index entries associated with the current record.  */
     sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur, aRegIdx, -1);
 
+    /* We must run the OP_FinishSeek opcode to resolve a prior
+    ** OP_DeferredSeek if there is any possibility that there have been
+    ** no OP_Column opcodes since the OP_DeferredSeek was issued.  But
+    ** we want to avoid the OP_FinishSeek if possible, as running it
+    ** costs CPU cycles. */
+    if( bFinishSeek ){
+      sqlite3VdbeAddOp1(v, OP_FinishSeek, iDataCur);
+    }
+
     /* If changing the rowid value, or if there are foreign key constraints
     ** to process, delete the old record. Otherwise, add a noop OP_Delete
     ** to invoke the pre-update hook.
@@ -139050,7 +143550,7 @@ SQLITE_PRIVATE void sqlite3Update(
   }else if( eOnePass==ONEPASS_MULTI ){
     sqlite3VdbeResolveLabel(v, labelContinue);
     sqlite3WhereEnd(pWInfo);
-  }else if( pPk ){
+  }else if( pPk || nChangeFrom ){
     sqlite3VdbeResolveLabel(v, labelContinue);
     sqlite3VdbeAddOp2(v, OP_Next, iEph, addrTop); VdbeCoverage(v);
   }else{
@@ -139135,7 +143635,7 @@ static void updateVirtualTable(
   int i;                    /* Loop counter */
   sqlite3 *db = pParse->db; /* Database connection */
   const char *pVTab = (const char*)sqlite3GetVTable(db, pTab);
-  WhereInfo *pWInfo;
+  WhereInfo *pWInfo = 0;
   int nArg = 2 + pTab->nCol;      /* Number of arguments to VUpdate */
   int regArg;                     /* First register in VUpdate arg array */
   int regRec;                     /* Register in which to assemble record */
@@ -139153,68 +143653,96 @@ static void updateVirtualTable(
   addr= sqlite3VdbeAddOp2(v, OP_OpenEphemeral, ephemTab, nArg);
   regArg = pParse->nMem + 1;
   pParse->nMem += nArg;
-  regRec = ++pParse->nMem;
-  regRowid = ++pParse->nMem;
+  if( pSrc->nSrc>1 ){
+    Expr *pRow;
+    ExprList *pList;
+    if( pRowid ){
+      pRow = sqlite3ExprDup(db, pRowid, 0);
+    }else{
+      pRow = sqlite3PExpr(pParse, TK_ROW, 0, 0);
+    }
+    pList = sqlite3ExprListAppend(pParse, 0, pRow);
+
+    for(i=0; i<pTab->nCol; i++){
+      if( aXRef[i]>=0 ){
+        pList = sqlite3ExprListAppend(pParse, pList,
+          sqlite3ExprDup(db, pChanges->a[aXRef[i]].pExpr, 0)
+        );
+      }else{
+        pList = sqlite3ExprListAppend(pParse, pList, exprRowColumn(pParse, i));
+      }
+    }
 
-  /* Start scanning the virtual table */
-  pWInfo = sqlite3WhereBegin(pParse, pSrc, pWhere, 0,0,WHERE_ONEPASS_DESIRED,0);
-  if( pWInfo==0 ) return;
+    updateFromSelect(pParse, ephemTab, 0, pList, pSrc, pWhere, 0, 0);
+    sqlite3ExprListDelete(db, pList);
+    eOnePass = ONEPASS_OFF;
+  }else{
+    regRec = ++pParse->nMem;
+    regRowid = ++pParse->nMem;
 
-  /* Populate the argument registers. */
-  for(i=0; i<pTab->nCol; i++){
-    if( aXRef[i]>=0 ){
-      sqlite3ExprCode(pParse, pChanges->a[aXRef[i]].pExpr, regArg+2+i);
-    }else{
-      sqlite3VdbeAddOp3(v, OP_VColumn, iCsr, i, regArg+2+i);
-      sqlite3VdbeChangeP5(v, OPFLAG_NOCHNG);/* Enable sqlite3_vtab_nochange() */
+    /* Start scanning the virtual table */
+    pWInfo = sqlite3WhereBegin(pParse, pSrc,pWhere,0,0,WHERE_ONEPASS_DESIRED,0);
+    if( pWInfo==0 ) return;
+
+    /* Populate the argument registers. */
+    for(i=0; i<pTab->nCol; i++){
+      assert( (pTab->aCol[i].colFlags & COLFLAG_GENERATED)==0 );
+      if( aXRef[i]>=0 ){
+        sqlite3ExprCode(pParse, pChanges->a[aXRef[i]].pExpr, regArg+2+i);
+      }else{
+        sqlite3VdbeAddOp3(v, OP_VColumn, iCsr, i, regArg+2+i);
+        sqlite3VdbeChangeP5(v, OPFLAG_NOCHNG);/* For sqlite3_vtab_nochange() */
+      }
     }
-  }
-  if( HasRowid(pTab) ){
-    sqlite3VdbeAddOp2(v, OP_Rowid, iCsr, regArg);
-    if( pRowid ){
-      sqlite3ExprCode(pParse, pRowid, regArg+1);
+    if( HasRowid(pTab) ){
+      sqlite3VdbeAddOp2(v, OP_Rowid, iCsr, regArg);
+      if( pRowid ){
+        sqlite3ExprCode(pParse, pRowid, regArg+1);
+      }else{
+        sqlite3VdbeAddOp2(v, OP_Rowid, iCsr, regArg+1);
+      }
     }else{
-      sqlite3VdbeAddOp2(v, OP_Rowid, iCsr, regArg+1);
+      Index *pPk;   /* PRIMARY KEY index */
+      i16 iPk;      /* PRIMARY KEY column */
+      pPk = sqlite3PrimaryKeyIndex(pTab);
+      assert( pPk!=0 );
+      assert( pPk->nKeyCol==1 );
+      iPk = pPk->aiColumn[0];
+      sqlite3VdbeAddOp3(v, OP_VColumn, iCsr, iPk, regArg);
+      sqlite3VdbeAddOp2(v, OP_SCopy, regArg+2+iPk, regArg+1);
     }
-  }else{
-    Index *pPk;   /* PRIMARY KEY index */
-    i16 iPk;      /* PRIMARY KEY column */
-    pPk = sqlite3PrimaryKeyIndex(pTab);
-    assert( pPk!=0 );
-    assert( pPk->nKeyCol==1 );
-    iPk = pPk->aiColumn[0];
-    sqlite3VdbeAddOp3(v, OP_VColumn, iCsr, iPk, regArg);
-    sqlite3VdbeAddOp2(v, OP_SCopy, regArg+2+iPk, regArg+1);
-  }
 
-  eOnePass = sqlite3WhereOkOnePass(pWInfo, aDummy);
+    eOnePass = sqlite3WhereOkOnePass(pWInfo, aDummy);
 
-  /* There is no ONEPASS_MULTI on virtual tables */
-  assert( eOnePass==ONEPASS_OFF || eOnePass==ONEPASS_SINGLE );
+    /* There is no ONEPASS_MULTI on virtual tables */
+    assert( eOnePass==ONEPASS_OFF || eOnePass==ONEPASS_SINGLE );
 
-  if( eOnePass ){
-    /* If using the onepass strategy, no-op out the OP_OpenEphemeral coded
-    ** above. */
-    sqlite3VdbeChangeToNoop(v, addr);
-    sqlite3VdbeAddOp1(v, OP_Close, iCsr);
-  }else{
-    /* Create a record from the argument register contents and insert it into
-    ** the ephemeral table. */
-    sqlite3MultiWrite(pParse);
-    sqlite3VdbeAddOp3(v, OP_MakeRecord, regArg, nArg, regRec);
-#ifdef SQLITE_DEBUG
-    /* Signal an assert() within OP_MakeRecord that it is allowed to
-    ** accept no-change records with serial_type 10 */
-    sqlite3VdbeChangeP5(v, OPFLAG_NOCHNG_MAGIC);
+    if( eOnePass ){
+      /* If using the onepass strategy, no-op out the OP_OpenEphemeral coded
+      ** above. */
+      sqlite3VdbeChangeToNoop(v, addr);
+      sqlite3VdbeAddOp1(v, OP_Close, iCsr);
+    }else{
+      /* Create a record from the argument register contents and insert it into
+      ** the ephemeral table. */
+      sqlite3MultiWrite(pParse);
+      sqlite3VdbeAddOp3(v, OP_MakeRecord, regArg, nArg, regRec);
+#if defined(SQLITE_DEBUG) && !defined(SQLITE_ENABLE_NULL_TRIM)
+      /* Signal an assert() within OP_MakeRecord that it is allowed to
+      ** accept no-change records with serial_type 10 */
+      sqlite3VdbeChangeP5(v, OPFLAG_NOCHNG_MAGIC);
 #endif
-    sqlite3VdbeAddOp2(v, OP_NewRowid, ephemTab, regRowid);
-    sqlite3VdbeAddOp3(v, OP_Insert, ephemTab, regRec, regRowid);
+      sqlite3VdbeAddOp2(v, OP_NewRowid, ephemTab, regRowid);
+      sqlite3VdbeAddOp3(v, OP_Insert, ephemTab, regRec, regRowid);
+    }
   }
 
 
   if( eOnePass==ONEPASS_OFF ){
     /* End the virtual table scan */
-    sqlite3WhereEnd(pWInfo);
+    if( pSrc->nSrc==1 ){
+      sqlite3WhereEnd(pWInfo);
+    }
 
     /* Begin scannning through the ephemeral table. */
     addr = sqlite3VdbeAddOp1(v, OP_Rewind, ephemTab); VdbeCoverage(v);
@@ -139472,7 +144000,7 @@ SQLITE_PRIVATE void sqlite3UpsertDoUpdate(
       for(i=0; i<nPk; i++){
         int k;
         assert( pPk->aiColumn[i]>=0 );
-        k = sqlite3ColumnOfIndex(pIdx, pPk->aiColumn[i]);
+        k = sqlite3TableColumnToIndex(pIdx, pPk->aiColumn[i]);
         sqlite3VdbeAddOp3(v, OP_Column, iCur, k, iPk+i);
         VdbeComment((v, "%s.%s", pIdx->zName,
                     pTab->aCol[pPk->aiColumn[i]].zName));
@@ -139482,6 +144010,7 @@ SQLITE_PRIVATE void sqlite3UpsertDoUpdate(
       VdbeCoverage(v);
       sqlite3VdbeAddOp4(v, OP_Halt, SQLITE_CORRUPT, OE_Abort, 0,
             "corrupt database", P4_STATIC);
+      sqlite3MayAbort(pParse);
       sqlite3VdbeJumpHere(v, i);
     }
   }
@@ -139548,7 +144077,7 @@ static int execSql(sqlite3 *db, char **pzErrMsg, const char *zSql){
     assert( sqlite3_strnicmp(zSql,"SELECT",6)==0 );
     /* The secondary SQL must be one of CREATE TABLE, CREATE INDEX,
     ** or INSERT.  Historically there have been attacks that first
-    ** corrupt the sqlite_master.sql field with other kinds of statements
+    ** corrupt the sqlite_schema.sql field with other kinds of statements
     ** then run VACUUM to get those statements to execute at inappropriate
     ** times. */
     if( zSubSql
@@ -139740,9 +144269,10 @@ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3RunVacuum(
     }
     db->mDbFlags |= DBFLAG_VacuumInto;
   }
-  nRes = sqlite3BtreeGetOptimalReserve(pMain);
+  nRes = sqlite3BtreeGetRequestedReserve(pMain);
 
   /* A VACUUM cannot change the pagesize of an encrypted database. */
+/* BEGIN SQLCIPHER */
 #ifdef SQLITE_HAS_CODEC
   if( db->nextPagesize ){
     extern void sqlite3CodecGetKey(sqlite3*, int, void**, int*);
@@ -139752,6 +144282,7 @@ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3RunVacuum(
     if( nKey ) db->nextPagesize = 0;
   }
 #endif
+/* END SQLCIPHER */
 
   sqlite3BtreeSetCacheSize(pTemp, db->aDb[iDb].pSchema->cache_size);
   sqlite3BtreeSetSpillSize(pTemp, sqlite3BtreeSetSpillSize(pMain,0));
@@ -139790,14 +144321,14 @@ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3RunVacuum(
   */
   db->init.iDb = nDb; /* force new CREATE statements into vacuum_db */
   rc = execSqlF(db, pzErrMsg,
-      "SELECT sql FROM \"%w\".sqlcipher_master"
-      " WHERE type='table'AND name<>'sqlcipher_sequence'"
+      "SELECT sql FROM \"%w\".sqlite_schema"
+      " WHERE type='table'AND name<>'sqlite_sequence'"
       " AND coalesce(rootpage,1)>0",
       zDbMain
   );
   if( rc!=SQLITE_OK ) goto end_of_vacuum;
   rc = execSqlF(db, pzErrMsg,
-      "SELECT sql FROM \"%w\".sqlcipher_master"
+      "SELECT sql FROM \"%w\".sqlite_schema"
       " WHERE type='index'",
       zDbMain
   );
@@ -139811,7 +144342,7 @@ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3RunVacuum(
   rc = execSqlF(db, pzErrMsg,
       "SELECT'INSERT INTO vacuum_db.'||quote(name)"
       "||' SELECT*FROM\"%w\".'||quote(name)"
-      "FROM vacuum_db.sqlcipher_master "
+      "FROM vacuum_db.sqlite_schema "
       "WHERE type='table'AND coalesce(rootpage,1)>0",
       zDbMain
   );
@@ -139822,11 +144353,11 @@ SQLITE_PRIVATE SQLITE_NOINLINE int sqlite3RunVacuum(
   /* Copy the triggers, views, and virtual tables from the main database
   ** over to the temporary database.  None of these objects has any
   ** associated storage, so all we have to do is copy their entries
-  ** from the SQLITE_MASTER table.
+  ** from the schema table.
   */
   rc = execSqlF(db, pzErrMsg,
-      "INSERT INTO vacuum_db.sqlcipher_master"
-      " SELECT*FROM \"%w\".sqlcipher_master"
+      "INSERT INTO vacuum_db.sqlite_schema"
+      " SELECT*FROM \"%w\".sqlite_schema"
       " WHERE type IN('view','trigger')"
       " OR(type='table'AND rootpage=0)",
       zDbMain
@@ -139895,7 +144426,7 @@ end_of_vacuum:
   db->nChange = saved_nChange;
   db->nTotalChange = saved_nTotalChange;
   db->mTrace = saved_mTrace;
-  sqlite3BtreeSetPageSize(pMain, -1, -1, 1);
+  sqlite3BtreeSetPageSize(pMain, -1, 0, 1);
 
   /* Currently there is an SQL level transaction open on the vacuum
   ** database. No locks are held on any other files (since the main file
@@ -140230,12 +144761,12 @@ SQLITE_PRIVATE void sqlite3VtabDisconnect(sqlite3 *db, Table *p){
 */
 SQLITE_PRIVATE void sqlite3VtabUnlockList(sqlite3 *db){
   VTable *p = db->pDisconnect;
-  db->pDisconnect = 0;
 
   assert( sqlite3BtreeHoldsAllMutexes(db) );
   assert( sqlite3_mutex_held(db->mutex) );
 
   if( p ){
+    db->pDisconnect = 0;
     sqlite3ExpirePreparedStatements(db, 0);
     do {
       VTable *pNext = p->pNext;
@@ -140330,7 +144861,7 @@ SQLITE_PRIVATE void sqlite3VtabBeginParse(
 #ifndef SQLITE_OMIT_AUTHORIZATION
   /* Creating a virtual table invokes the authorization callback twice.
   ** The first invocation, to obtain permission to INSERT a row into the
-  ** sqlite_master table, has already been made by sqlite3StartTable().
+  ** sqlite_schema table, has already been made by sqlite3StartTable().
   ** The second call, to obtain permission to create the table, is made now.
   */
   if( pTable->azModuleArg ){
@@ -140371,9 +144902,9 @@ SQLITE_PRIVATE void sqlite3VtabFinishParse(Parse *pParse, Token *pEnd){
 
   /* If the CREATE VIRTUAL TABLE statement is being entered for the
   ** first time (in other words if the virtual table is actually being
-  ** created now instead of just being read out of sqlite_master) then
+  ** created now instead of just being read out of sqlite_schema) then
   ** do additional initialization work and store the statement text
-  ** in the sqlite_master table.
+  ** in the sqlite_schema table.
   */
   if( !db->init.busy ){
     char *zStmt;
@@ -140382,6 +144913,8 @@ SQLITE_PRIVATE void sqlite3VtabFinishParse(Parse *pParse, Token *pEnd){
     int iReg;
     Vdbe *v;
 
+    sqlite3MayAbort(pParse);
+
     /* Compute the complete text of the CREATE VIRTUAL TABLE statement */
     if( pEnd ){
       pParse->sNameToken.n = (int)(pEnd->z - pParse->sNameToken.z) + pEnd->n;
@@ -140389,38 +144922,38 @@ SQLITE_PRIVATE void sqlite3VtabFinishParse(Parse *pParse, Token *pEnd){
     zStmt = sqlite3MPrintf(db, "CREATE VIRTUAL TABLE %T", &pParse->sNameToken);
 
     /* A slot for the record has already been allocated in the
-    ** SQLITE_MASTER table.  We just need to update that slot with all
+    ** schema table.  We just need to update that slot with all
     ** the information we've collected.
     **
     ** The VM register number pParse->regRowid holds the rowid of an
-    ** entry in the sqlite_master table tht was created for this vtab
+    ** entry in the sqlite_schema table tht was created for this vtab
     ** by sqlite3StartTable().
     */
     iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
     sqlite3NestedParse(pParse,
-      "UPDATE %Q.%s "
+      "UPDATE %Q." DFLT_SCHEMA_TABLE " "
          "SET type='table', name=%Q, tbl_name=%Q, rootpage=0, sql=%Q "
        "WHERE rowid=#%d",
-      db->aDb[iDb].zDbSName, MASTER_NAME,
+      db->aDb[iDb].zDbSName,
       pTab->zName,
       pTab->zName,
       zStmt,
       pParse->regRowid
     );
-    sqlite3DbFree(db, zStmt);
     v = sqlite3GetVdbe(pParse);
     sqlite3ChangeCookie(pParse, iDb);
 
     sqlite3VdbeAddOp0(v, OP_Expire);
-    zWhere = sqlite3MPrintf(db, "name='%q' AND type='table'", pTab->zName);
+    zWhere = sqlite3MPrintf(db, "name=%Q AND sql=%Q", pTab->zName, zStmt);
     sqlite3VdbeAddParseSchemaOp(v, iDb, zWhere);
+    sqlite3DbFree(db, zStmt);
 
     iReg = ++pParse->nMem;
     sqlite3VdbeLoadString(v, iReg, pTab->zName);
     sqlite3VdbeAddOp2(v, OP_VCreate, iDb, iReg);
   }
 
-  /* If we are rereading the sqlite_master table create the in-memory
+  /* If we are rereading the sqlite_schema table create the in-memory
   ** record of the table. The xConnect() method is not called until
   ** the first time the virtual table is used in an SQL statement. This
   ** allows a schema that contains virtual tables to be loaded before
@@ -140510,6 +145043,7 @@ static int vtabCallConstructor(
   }
   pVTable->db = db;
   pVTable->pMod = pMod;
+  pVTable->eVtabRisk = SQLITE_VTABRISK_Normal;
 
   iDb = sqlite3SchemaToIndex(db, pTab->pSchema);
   pTab->azModuleArg[1] = db->aDb[iDb].zDbSName;
@@ -140549,7 +145083,7 @@ static int vtabCallConstructor(
       rc = SQLITE_ERROR;
     }else{
       int iCol;
-      u8 oooHidden = 0;
+      u16 oooHidden = 0;
       /* If everything went according to plan, link the new VTable structure
       ** into the linked list headed by pTab->pVTable. Then loop through the
       ** columns of the table to see if any of them contain the token "hidden".
@@ -140815,7 +145349,8 @@ SQLITE_PRIVATE int sqlite3VtabCallDestroy(sqlite3 *db, int iDb, const char *zTab
     }
     p = vtabDisconnectAll(db, pTab);
     xDestroy = p->pMod->pModule->xDestroy;
-    assert( xDestroy!=0 );  /* Checked before the virtual table is created */
+    if( xDestroy==0 ) xDestroy = p->pMod->pModule->xDisconnect;
+    assert( xDestroy!=0 );
     pTab->nTabRef++;
     rc = xDestroy(p->pVtab);
     /* Remove the sqlite3_vtab* from the aVTrans[] array, if applicable */
@@ -141098,7 +145633,7 @@ SQLITE_PRIVATE void sqlite3VtabMakeWritable(Parse *pParse, Table *pTab){
     if( pTab==pToplevel->apVtabLock[i] ) return;
   }
   n = (pToplevel->nVtabLock+1)*sizeof(pToplevel->apVtabLock[0]);
-  apVtabLock = sqlite3_realloc64(pToplevel->apVtabLock, n);
+  apVtabLock = sqlite3Realloc(pToplevel->apVtabLock, n);
   if( apVtabLock ){
     pToplevel->apVtabLock = apVtabLock;
     pToplevel->apVtabLock[pToplevel->nVtabLock++] = pTab;
@@ -141198,28 +145733,38 @@ SQLITE_API int sqlite3_vtab_on_conflict(sqlite3 *db){
 SQLITE_API int sqlite3_vtab_config(sqlite3 *db, int op, ...){
   va_list ap;
   int rc = SQLITE_OK;
+  VtabCtx *p;
 
 #ifdef SQLITE_ENABLE_API_ARMOR
   if( !sqlite3SafetyCheckOk(db) ) return SQLITE_MISUSE_BKPT;
 #endif
   sqlite3_mutex_enter(db->mutex);
-  va_start(ap, op);
-  switch( op ){
-    case SQLITE_VTAB_CONSTRAINT_SUPPORT: {
-      VtabCtx *p = db->pVtabCtx;
-      if( !p ){
-        rc = SQLITE_MISUSE_BKPT;
-      }else{
-        assert( p->pTab==0 || IsVirtual(p->pTab) );
+  p = db->pVtabCtx;
+  if( !p ){
+    rc = SQLITE_MISUSE_BKPT;
+  }else{
+    assert( p->pTab==0 || IsVirtual(p->pTab) );
+    va_start(ap, op);
+    switch( op ){
+      case SQLITE_VTAB_CONSTRAINT_SUPPORT: {
         p->pVTable->bConstraint = (u8)va_arg(ap, int);
+        break;
+      }
+      case SQLITE_VTAB_INNOCUOUS: {
+        p->pVTable->eVtabRisk = SQLITE_VTABRISK_Low;
+        break;
+      }
+      case SQLITE_VTAB_DIRECTONLY: {
+        p->pVTable->eVtabRisk = SQLITE_VTABRISK_High;
+        break;
+      }
+      default: {
+        rc = SQLITE_MISUSE_BKPT;
+        break;
       }
-      break;
     }
-    default:
-      rc = SQLITE_MISUSE_BKPT;
-      break;
+    va_end(ap);
   }
-  va_end(ap);
 
   if( rc!=SQLITE_OK ) sqlite3Error(db, rc);
   sqlite3_mutex_leave(db->mutex);
@@ -141528,24 +146073,29 @@ struct WhereTerm {
 /*
 ** Allowed values of WhereTerm.wtFlags
 */
-#define TERM_DYNAMIC    0x01   /* Need to call sqlite3ExprDelete(db, pExpr) */
-#define TERM_VIRTUAL    0x02   /* Added by the optimizer.  Do not code */
-#define TERM_CODED      0x04   /* This term is already coded */
-#define TERM_COPIED     0x08   /* Has a child */
-#define TERM_ORINFO     0x10   /* Need to free the WhereTerm.u.pOrInfo object */
-#define TERM_ANDINFO    0x20   /* Need to free the WhereTerm.u.pAndInfo obj */
-#define TERM_OR_OK      0x40   /* Used during OR-clause processing */
+#define TERM_DYNAMIC    0x0001 /* Need to call sqlite3ExprDelete(db, pExpr) */
+#define TERM_VIRTUAL    0x0002 /* Added by the optimizer.  Do not code */
+#define TERM_CODED      0x0004 /* This term is already coded */
+#define TERM_COPIED     0x0008 /* Has a child */
+#define TERM_ORINFO     0x0010 /* Need to free the WhereTerm.u.pOrInfo object */
+#define TERM_ANDINFO    0x0020 /* Need to free the WhereTerm.u.pAndInfo obj */
+#define TERM_OR_OK      0x0040 /* Used during OR-clause processing */
 #ifdef SQLITE_ENABLE_STAT4
-#  define TERM_VNULL    0x80   /* Manufactured x>NULL or x<=NULL term */
+#  define TERM_VNULL    0x0080 /* Manufactured x>NULL or x<=NULL term */
 #else
-#  define TERM_VNULL    0x00   /* Disabled if not using stat4 */
+#  define TERM_VNULL    0x0000 /* Disabled if not using stat4 */
 #endif
-#define TERM_LIKEOPT    0x100  /* Virtual terms from the LIKE optimization */
-#define TERM_LIKECOND   0x200  /* Conditionally this LIKE operator term */
-#define TERM_LIKE       0x400  /* The original LIKE operator */
-#define TERM_IS         0x800  /* Term.pExpr is an IS operator */
+#define TERM_LIKEOPT    0x0100 /* Virtual terms from the LIKE optimization */
+#define TERM_LIKECOND   0x0200 /* Conditionally this LIKE operator term */
+#define TERM_LIKE       0x0400 /* The original LIKE operator */
+#define TERM_IS         0x0800 /* Term.pExpr is an IS operator */
 #define TERM_VARSELECT  0x1000 /* Term.pExpr contains a correlated sub-query */
-#define TERM_NOPARTIDX  0x2000 /* Not for use to enable a partial index */
+#define TERM_HEURTRUTH  0x2000 /* Heuristic truthProb used */
+#ifdef SQLITE_ENABLE_STAT4
+#  define TERM_HIGHTRUTH  0x4000 /* Term excludes few rows */
+#else
+#  define TERM_HIGHTRUTH  0      /* Only used with STAT4 */
+#endif
 
 /*
 ** An instance of the WhereScan object is used as an iterator for locating
@@ -141660,13 +146210,16 @@ struct WhereLoopBuilder {
   UnpackedRecord *pRec;     /* Probe for stat4 (if required) */
   int nRecValid;            /* Number of valid fields currently in pRec */
 #endif
-  unsigned int bldFlags;    /* SQLITE_BLDF_* flags */
+  unsigned char bldFlags1;  /* First set of SQLITE_BLDF_* flags */
+  unsigned char bldFlags2;  /* Second set of SQLITE_BLDF_* flags */
   unsigned int iPlanLimit;  /* Search limiter */
 };
 
 /* Allowed values for WhereLoopBuider.bldFlags */
-#define SQLITE_BLDF_INDEXED  0x0001   /* An index is used */
-#define SQLITE_BLDF_UNIQUE   0x0002   /* All keys of a UNIQUE index used */
+#define SQLITE_BLDF1_INDEXED  0x0001   /* An index is used */
+#define SQLITE_BLDF1_UNIQUE   0x0002   /* All keys of a UNIQUE index used */
+
+#define SQLITE_BLDF2_2NDPASS  0x0004   /* Second builder pass needed */
 
 /* The WhereLoopBuilder.iPlanLimit is used to limit the number of
 ** index+constraint combinations the query planner will consider for a
@@ -141689,6 +146242,20 @@ struct WhereLoopBuilder {
 #endif
 
 /*
+** Each instance of this object records a change to a single node
+** in an expression tree to cause that node to point to a column
+** of an index rather than an expression or a virtual column.  All
+** such transformations need to be undone at the end of WHERE clause
+** processing.
+*/
+typedef struct WhereExprMod WhereExprMod;
+struct WhereExprMod {
+  WhereExprMod *pNext;  /* Next translation on a list of them all */
+  Expr *pExpr;          /* The Expr node that was transformed */
+  Expr orig;            /* Original value of the Expr node */
+};
+
+/*
 ** The WHERE clause processing routine has two halves.  The
 ** first part does the start of the WHERE loop and the second
 ** half does the tail of the WHERE loop.  An instance of
@@ -141704,23 +146271,25 @@ struct WhereInfo {
   ExprList *pOrderBy;       /* The ORDER BY clause or NULL */
   ExprList *pResultSet;     /* Result set of the query */
   Expr *pWhere;             /* The complete WHERE clause */
-  LogEst iLimit;            /* LIMIT if wctrlFlags has WHERE_USE_LIMIT */
   int aiCurOnePass[2];      /* OP_OpenWrite cursors for the ONEPASS opt */
   int iContinue;            /* Jump here to continue with next record */
   int iBreak;               /* Jump here to break out of the loop */
   int savedNQueryLoop;      /* pParse->nQueryLoop outside the WHERE loop */
   u16 wctrlFlags;           /* Flags originally passed to sqlite3WhereBegin() */
+  LogEst iLimit;            /* LIMIT if wctrlFlags has WHERE_USE_LIMIT */
   u8 nLevel;                /* Number of nested loop */
   i8 nOBSat;                /* Number of ORDER BY terms satisfied by indices */
-  u8 sorted;                /* True if really sorted (not just grouped) */
   u8 eOnePass;              /* ONEPASS_OFF, or _SINGLE, or _MULTI */
-  u8 untestedTerms;         /* Not all WHERE terms resolved by outer loop */
   u8 eDistinct;             /* One of the WHERE_DISTINCT_* values */
-  u8 bOrderedInnerLoop;     /* True if only the inner-most loop is ordered */
+  unsigned bDeferredSeek :1;   /* Uses OP_DeferredSeek */
+  unsigned untestedTerms :1;   /* Not all WHERE terms resolved by outer loop */
+  unsigned bOrderedInnerLoop:1;/* True if only the inner-most loop is ordered */
+  unsigned sorted :1;          /* True if really sorted (not just grouped) */
+  LogEst nRowOut;           /* Estimated number of output rows */
   int iTop;                 /* The very beginning of the WHERE loop */
   WhereLoop *pLoops;        /* List of all WhereLoop objects */
+  WhereExprMod *pExprMods;  /* Expression modifications */
   Bitmask revMask;          /* Mask of ORDER BY terms that need reversing */
-  LogEst nRowOut;           /* Estimated number of output rows */
   WhereClause sWC;          /* Decomposition of the WHERE clause */
   WhereMaskSet sMaskSet;    /* Map cursor numbers to bitmasks */
   WhereLevel a[1];          /* Information about each nest loop in WHERE */
@@ -141734,6 +146303,8 @@ struct WhereInfo {
 SQLITE_PRIVATE Bitmask sqlite3WhereGetMask(WhereMaskSet*,int);
 #ifdef WHERETRACE_ENABLED
 SQLITE_PRIVATE void sqlite3WhereClausePrint(WhereClause *pWC);
+SQLITE_PRIVATE void sqlite3WhereTermPrint(WhereTerm *pTerm, int iTerm);
+SQLITE_PRIVATE void sqlite3WhereLoopPrint(WhereLoop *p, WhereClause *pWC);
 #endif
 SQLITE_PRIVATE WhereTerm *sqlite3WhereFindTerm(
   WhereClause *pWC,     /* The WHERE clause to be searched */
@@ -142245,7 +146816,8 @@ static Expr *removeUnindexableInClauseTerms(
   Expr *pX              /* The IN expression to be reduced */
 ){
   sqlite3 *db = pParse->db;
-  Expr *pNew = sqlite3ExprDup(db, pX, 0);
+  Expr *pNew;
+  pNew = sqlite3ExprDup(db, pX, 0);
   if( db->mallocFailed==0 ){
     ExprList *pOrigRhs = pNew->x.pSelect->pEList;  /* Original unmodified RHS */
     ExprList *pOrigLhs = pNew->pLeft->x.pList;     /* Original unmodified LHS */
@@ -142422,7 +146994,7 @@ static int codeEqualityTerm(
           if( i==iEq ){
             pIn->iCur = iTab;
             pIn->eEndLoopOp = bRev ? OP_Prev : OP_Next;
-            if( iEq>0 && (pLoop->wsFlags & WHERE_VIRTUALTABLE)==0 ){
+            if( iEq>0 ){
               pIn->iBase = iReg - i;
               pIn->nPrefix = i;
               pLoop->wsFlags |= WHERE_IN_EARLYOUT;
@@ -142653,7 +147225,7 @@ static int codeCursorHintCheckExpr(Walker *pWalker, Expr *pExpr){
   assert( pHint->pIdx!=0 );
   if( pExpr->op==TK_COLUMN
    && pExpr->iTable==pHint->iTabCur
-   && sqlite3ColumnOfIndex(pHint->pIdx, pExpr->iColumn)<0
+   && sqlite3TableColumnToIndex(pHint->pIdx, pExpr->iColumn)<0
   ){
     pWalker->eCode = 1;
   }
@@ -142721,7 +147293,7 @@ static int codeCursorHintFixExpr(Walker *pWalker, Expr *pExpr){
       pExpr->iTable = reg;
     }else if( pHint->pIdx!=0 ){
       pExpr->iTable = pHint->iIdxCur;
-      pExpr->iColumn = sqlite3ColumnOfIndex(pHint->pIdx, pExpr->iColumn);
+      pExpr->iColumn = sqlite3TableColumnToIndex(pHint->pIdx, pExpr->iColumn);
       assert( pExpr->iColumn>=0 );
     }
   }else if( pExpr->op==TK_AGG_FUNCTION ){
@@ -142874,18 +147446,23 @@ static void codeDeferredSeek(
   assert( iIdxCur>0 );
   assert( pIdx->aiColumn[pIdx->nColumn-1]==-1 );
 
+  pWInfo->bDeferredSeek = 1;
   sqlite3VdbeAddOp3(v, OP_DeferredSeek, iIdxCur, 0, iCur);
   if( (pWInfo->wctrlFlags & WHERE_OR_SUBCLAUSE)
    && DbMaskAllZero(sqlite3ParseToplevel(pParse)->writeMask)
   ){
     int i;
     Table *pTab = pIdx->pTable;
-    int *ai = (int*)sqlite3DbMallocZero(pParse->db, sizeof(int)*(pTab->nCol+1));
+    u32 *ai = (u32*)sqlite3DbMallocZero(pParse->db, sizeof(u32)*(pTab->nCol+1));
     if( ai ){
       ai[0] = pTab->nCol;
       for(i=0; i<pIdx->nColumn-1; i++){
+        int x1, x2;
         assert( pIdx->aiColumn[i]<pTab->nCol );
-        if( pIdx->aiColumn[i]>=0 ) ai[pIdx->aiColumn[i]+1] = i+1;
+        x1 = pIdx->aiColumn[i];
+        x2 = sqlite3TableColumnToStorage(pTab, x1);
+        testcase( x1!=x2 );
+        if( x1>=0 ) ai[x2+1] = i+1;
       }
       sqlite3VdbeChangeP4(v, -1, (char*)ai, P4_INTARRAY);
     }
@@ -142936,8 +147513,24 @@ typedef struct IdxExprTrans {
   int iTabCur;       /* The cursor of the corresponding table */
   int iIdxCur;       /* The cursor for the index */
   int iIdxCol;       /* The column for the index */
+  int iTabCol;       /* The column for the table */
+  WhereInfo *pWInfo; /* Complete WHERE clause information */
+  sqlite3 *db;       /* Database connection (for malloc()) */
 } IdxExprTrans;
 
+/*
+** Preserve pExpr on the WhereETrans list of the WhereInfo.
+*/
+static void preserveExpr(IdxExprTrans *pTrans, Expr *pExpr){
+  WhereExprMod *pNew;
+  pNew = sqlite3DbMallocRaw(pTrans->db, sizeof(*pNew));
+  if( pNew==0 ) return;
+  pNew->pNext = pTrans->pWInfo->pExprMods;
+  pTrans->pWInfo->pExprMods = pNew;
+  pNew->pExpr = pExpr;
+  memcpy(&pNew->orig, pExpr, sizeof(*pExpr));
+}
+
 /* The walker node callback used to transform matching expressions into
 ** a reference to an index column for an index on an expression.
 **
@@ -142947,21 +147540,49 @@ typedef struct IdxExprTrans {
 static int whereIndexExprTransNode(Walker *p, Expr *pExpr){
   IdxExprTrans *pX = p->u.pIdxTrans;
   if( sqlite3ExprCompare(0, pExpr, pX->pIdxExpr, pX->iTabCur)==0 ){
+    preserveExpr(pX, pExpr);
     pExpr->affExpr = sqlite3ExprAffinity(pExpr);
     pExpr->op = TK_COLUMN;
     pExpr->iTable = pX->iIdxCur;
     pExpr->iColumn = pX->iIdxCol;
     pExpr->y.pTab = 0;
+    testcase( ExprHasProperty(pExpr, EP_Skip) );
+    testcase( ExprHasProperty(pExpr, EP_Unlikely) );
+    ExprClearProperty(pExpr, EP_Skip|EP_Unlikely);
     return WRC_Prune;
   }else{
     return WRC_Continue;
   }
 }
 
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+/* A walker node callback that translates a column reference to a table
+** into a corresponding column reference of an index.
+*/
+static int whereIndexExprTransColumn(Walker *p, Expr *pExpr){
+  if( pExpr->op==TK_COLUMN ){
+    IdxExprTrans *pX = p->u.pIdxTrans;
+    if( pExpr->iTable==pX->iTabCur && pExpr->iColumn==pX->iTabCol ){
+      assert( pExpr->y.pTab!=0 );
+      preserveExpr(pX, pExpr);
+      pExpr->affExpr = sqlite3TableColumnAffinity(pExpr->y.pTab,pExpr->iColumn);
+      pExpr->iTable = pX->iIdxCur;
+      pExpr->iColumn = pX->iIdxCol;
+      pExpr->y.pTab = 0;
+    }
+  }
+  return WRC_Continue;
+}
+#endif /* SQLITE_OMIT_GENERATED_COLUMNS */
+
 /*
 ** For an indexes on expression X, locate every instance of expression X
 ** in pExpr and change that subexpression into a reference to the appropriate
 ** column of the index.
+**
+** 2019-10-24: Updated to also translate references to a VIRTUAL column in
+** the table into references to the corresponding (stored) column of the
+** index.
 */
 static void whereIndexExprTrans(
   Index *pIdx,      /* The Index */
@@ -142971,20 +147592,48 @@ static void whereIndexExprTrans(
 ){
   int iIdxCol;               /* Column number of the index */
   ExprList *aColExpr;        /* Expressions that are indexed */
+  Table *pTab;
   Walker w;
   IdxExprTrans x;
   aColExpr = pIdx->aColExpr;
-  if( aColExpr==0 ) return;  /* Not an index on expressions */
+  if( aColExpr==0 && !pIdx->bHasVCol ){
+    /* The index does not reference any expressions or virtual columns
+    ** so no translations are needed. */
+    return;
+  }
+  pTab = pIdx->pTable;
   memset(&w, 0, sizeof(w));
-  w.xExprCallback = whereIndexExprTransNode;
   w.u.pIdxTrans = &x;
   x.iTabCur = iTabCur;
   x.iIdxCur = iIdxCur;
-  for(iIdxCol=0; iIdxCol<aColExpr->nExpr; iIdxCol++){
-    if( pIdx->aiColumn[iIdxCol]!=XN_EXPR ) continue;
-    assert( aColExpr->a[iIdxCol].pExpr!=0 );
+  x.pWInfo = pWInfo;
+  x.db = pWInfo->pParse->db;
+  for(iIdxCol=0; iIdxCol<pIdx->nColumn; iIdxCol++){
+    i16 iRef = pIdx->aiColumn[iIdxCol];
+    if( iRef==XN_EXPR ){
+      assert( aColExpr->a[iIdxCol].pExpr!=0 );
+      x.pIdxExpr = aColExpr->a[iIdxCol].pExpr;
+      if( sqlite3ExprIsConstant(x.pIdxExpr) ) continue;
+      w.xExprCallback = whereIndexExprTransNode;
+#ifndef SQLITE_OMIT_GENERATED_COLUMNS
+    }else if( iRef>=0
+       && (pTab->aCol[iRef].colFlags & COLFLAG_VIRTUAL)!=0
+       && (pTab->aCol[iRef].zColl==0
+           || sqlite3StrICmp(pTab->aCol[iRef].zColl, sqlite3StrBINARY)==0)
+    ){
+      /* Check to see if there are direct references to generated columns
+      ** that are contained in the index.  Pulling the generated column
+      ** out of the index is an optimization only - the main table is always
+      ** available if the index cannot be used.  To avoid unnecessary
+      ** complication, omit this optimization if the collating sequence for
+      ** the column is non-standard */
+      x.iTabCol = iRef;
+      w.xExprCallback = whereIndexExprTransColumn;
+#endif /* SQLITE_OMIT_GENERATED_COLUMNS */
+    }else{
+      continue;
+    }
     x.iIdxCol = iIdxCol;
-    x.pIdxExpr = aColExpr->a[iIdxCol].pExpr;
     sqlite3WalkExpr(&w, pWInfo->pWhere);
     sqlite3WalkExprList(&w, pWInfo->pOrderBy);
     sqlite3WalkExprList(&w, pWInfo->pResultSet);
@@ -143056,6 +147705,21 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart(
   pLevel->notReady = notReady & ~sqlite3WhereGetMask(&pWInfo->sMaskSet, iCur);
   bRev = (pWInfo->revMask>>iLevel)&1;
   VdbeModuleComment((v, "Begin WHERE-loop%d: %s",iLevel,pTabItem->pTab->zName));
+#if WHERETRACE_ENABLED /* 0x20800 */
+  if( sqlite3WhereTrace & 0x800 ){
+    sqlite3DebugPrintf("Coding level %d of %d:  notReady=%llx  iFrom=%d\n",
+       iLevel, pWInfo->nLevel, (u64)notReady, pLevel->iFrom);
+    sqlite3WhereLoopPrint(pLoop, pWC);
+  }
+  if( sqlite3WhereTrace & 0x20000 ){
+    if( iLevel==0 ){
+      sqlite3DebugPrintf("WHERE clause being coded:\n");
+      sqlite3TreeViewExpr(0, pWInfo->pWhere, 0);
+    }
+    sqlite3DebugPrintf("All WHERE-clause terms before coding:\n");
+    sqlite3WhereClausePrint(pWC);
+  }
+#endif
 
   /* Create labels for the "break" and "continue" instructions
   ** for the current loop.  Jump to addrBrk to break out of a loop.
@@ -143135,9 +147799,12 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart(
     iIn = pLevel->u.in.nIn;
     for(j=nConstraint-1; j>=0; j--){
       pTerm = pLoop->aLTerm[j];
+      if( (pTerm->eOperator & WO_IN)!=0 ) iIn--;
       if( j<16 && (pLoop->u.vtab.omitMask>>j)&1 ){
         disableTerm(pLevel, pTerm);
-      }else if( (pTerm->eOperator & WO_IN)!=0 ){
+      }else if( (pTerm->eOperator & WO_IN)!=0
+        && sqlite3ExprVectorSize(pTerm->pExpr->pLeft)==1
+      ){
         Expr *pCompare;  /* The comparison operator */
         Expr *pRight;    /* RHS of the comparison */
         VdbeOp *pOp;     /* Opcode to access the value of the IN constraint */
@@ -143148,8 +147815,8 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart(
         ** encoding of the value in the register, so it *must* be reloaded. */
         assert( pLevel->u.in.aInLoop!=0 || db->mallocFailed );
         if( !db->mallocFailed ){
-          assert( iIn>0 );
-          pOp = sqlite3VdbeGetOp(v, pLevel->u.in.aInLoop[--iIn].addrInTop);
+          assert( iIn>=0 && iIn<pLevel->u.in.nIn );
+          pOp = sqlite3VdbeGetOp(v, pLevel->u.in.aInLoop[iIn].addrInTop);
           assert( pOp->opcode==OP_Column || pOp->opcode==OP_Rowid );
           assert( pOp->opcode!=OP_Column || pOp->p3==iReg+j+2 );
           assert( pOp->opcode!=OP_Rowid || pOp->p2==iReg+j+2 );
@@ -143166,13 +147833,16 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart(
           pCompare->pRight = pRight = sqlite3Expr(db, TK_REGISTER, 0);
           if( pRight ){
             pRight->iTable = iReg+j+2;
-            sqlite3ExprIfFalse(pParse, pCompare, pLevel->addrCont, 0);
+            sqlite3ExprIfFalse(
+                pParse, pCompare, pLevel->addrCont, SQLITE_JUMPIFNULL
+            );
           }
           pCompare->pLeft = 0;
           sqlite3ExprDelete(db, pCompare);
         }
       }
     }
+    assert( iIn==0 || db->mallocFailed );
     /* These registers need to be preserved in case there is an IN operator
     ** loop.  So we could deallocate the registers here (and potentially
     ** reuse them later) if (pLoop->wsFlags & WHERE_IN_ABLE)==0.  But it seems
@@ -143438,10 +148108,13 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart(
     ){
       assert( bSeekPastNull==0 && nExtraReg==0 && nBtm==0 && nTop==0 );
       assert( pRangeEnd==0 && pRangeStart==0 );
-      assert( pLoop->nSkip==0 );
+      testcase( pLoop->nSkip>0 );
       nExtraReg = 1;
       bSeekPastNull = 1;
       pLevel->regBignull = regBignull = ++pParse->nMem;
+      if( pLevel->iLeftJoin ){
+        sqlite3VdbeAddOp2(v, OP_Integer, 0, regBignull);
+      }
       pLevel->addrBignull = sqlite3VdbeMakeLabel(pParse);
     }
 
@@ -143637,10 +148310,10 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart(
     if( omitTable ){
       /* pIdx is a covering index.  No need to access the main table. */
     }else if( HasRowid(pIdx->pTable) ){
-      if( (pWInfo->wctrlFlags & WHERE_SEEK_TABLE) || (
-          (pWInfo->wctrlFlags & WHERE_SEEK_UNIQ_TABLE)
-       && (pWInfo->eOnePass==ONEPASS_SINGLE)
-      )){
+      if( (pWInfo->wctrlFlags & WHERE_SEEK_TABLE)
+       || ( (pWInfo->wctrlFlags & WHERE_SEEK_UNIQ_TABLE)!=0
+           && (pWInfo->eOnePass==ONEPASS_SINGLE || pLoop->nLTerm==0) )
+      ){
         iRowidReg = ++pParse->nMem;
         sqlite3VdbeAddOp2(v, OP_IdxRowid, iIdxCur, iRowidReg);
         sqlite3VdbeAddOp3(v, OP_NotExists, iCur, 0, iRowidReg);
@@ -143652,38 +148325,51 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart(
       Index *pPk = sqlite3PrimaryKeyIndex(pIdx->pTable);
       iRowidReg = sqlite3GetTempRange(pParse, pPk->nKeyCol);
       for(j=0; j<pPk->nKeyCol; j++){
-        k = sqlite3ColumnOfIndex(pIdx, pPk->aiColumn[j]);
+        k = sqlite3TableColumnToIndex(pIdx, pPk->aiColumn[j]);
         sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, k, iRowidReg+j);
       }
       sqlite3VdbeAddOp4Int(v, OP_NotFound, iCur, addrCont,
                            iRowidReg, pPk->nKeyCol); VdbeCoverage(v);
     }
 
-    /* If pIdx is an index on one or more expressions, then look through
-    ** all the expressions in pWInfo and try to transform matching expressions
-    ** into reference to index columns.
-    **
-    ** Do not do this for the RHS of a LEFT JOIN. This is because the
-    ** expression may be evaluated after OP_NullRow has been executed on
-    ** the cursor. In this case it is important to do the full evaluation,
-    ** as the result of the expression may not be NULL, even if all table
-    ** column values are.  https://www.sqlite.org/src/info/7fa8049685b50b5a
-    **
-    ** Also, do not do this when processing one index an a multi-index
-    ** OR clause, since the transformation will become invalid once we
-    ** move forward to the next index.
-    ** https://sqlite.org/src/info/4e8e4857d32d401f
-    */
-    if( pLevel->iLeftJoin==0 && (pWInfo->wctrlFlags & WHERE_OR_SUBCLAUSE)==0 ){
-      whereIndexExprTrans(pIdx, iCur, iIdxCur, pWInfo);
-    }
+    if( pLevel->iLeftJoin==0 ){
+      /* If pIdx is an index on one or more expressions, then look through
+      ** all the expressions in pWInfo and try to transform matching expressions
+      ** into reference to index columns.  Also attempt to translate references
+      ** to virtual columns in the table into references to (stored) columns
+      ** of the index.
+      **
+      ** Do not do this for the RHS of a LEFT JOIN. This is because the
+      ** expression may be evaluated after OP_NullRow has been executed on
+      ** the cursor. In this case it is important to do the full evaluation,
+      ** as the result of the expression may not be NULL, even if all table
+      ** column values are.  https://www.sqlite.org/src/info/7fa8049685b50b5a
+      **
+      ** Also, do not do this when processing one index an a multi-index
+      ** OR clause, since the transformation will become invalid once we
+      ** move forward to the next index.
+      ** https://sqlite.org/src/info/4e8e4857d32d401f
+      */
+      if( (pWInfo->wctrlFlags & WHERE_OR_SUBCLAUSE)==0 ){
+        whereIndexExprTrans(pIdx, iCur, iIdxCur, pWInfo);
+      }
 
-    /* If a partial index is driving the loop, try to eliminate WHERE clause
-    ** terms from the query that must be true due to the WHERE clause of
-    ** the partial index
-    */
-    if( pIdx->pPartIdxWhere ){
-      whereApplyPartialIndexConstraints(pIdx->pPartIdxWhere, iCur, pWC);
+      /* If a partial index is driving the loop, try to eliminate WHERE clause
+      ** terms from the query that must be true due to the WHERE clause of
+      ** the partial index.
+      **
+      ** 2019-11-02 ticket 623eff57e76d45f6: This optimization does not work
+      ** for a LEFT JOIN.
+      */
+      if( pIdx->pPartIdxWhere ){
+        whereApplyPartialIndexConstraints(pIdx->pPartIdxWhere, iCur, pWC);
+      }
+    }else{
+      testcase( pIdx->pPartIdxWhere );
+      /* The following assert() is not a requirement, merely an observation:
+      ** The OR-optimization doesn't work for the right hand table of
+      ** a LEFT JOIN: */
+      assert( (pWInfo->wctrlFlags & WHERE_OR_SUBCLAUSE)==0 );
     }
 
     /* Record the instruction used to terminate the loop. */
@@ -143870,9 +148556,9 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart(
         WhereInfo *pSubWInfo;           /* Info for single OR-term scan */
         Expr *pOrExpr = pOrTerm->pExpr; /* Current OR clause term */
         int jmp1 = 0;                   /* Address of jump operation */
-        assert( (pTabItem[0].fg.jointype & JT_LEFT)==0
-             || ExprHasProperty(pOrExpr, EP_FromJoin)
-        );
+        testcase( (pTabItem[0].fg.jointype & JT_LEFT)!=0
+               && !ExprHasProperty(pOrExpr, EP_FromJoin)
+        ); /* See TH3 vtab25.400 and ticket 614b25314c766238 */
         if( pAndExpr ){
           pAndExpr->pLeft = pOrExpr;
           pOrExpr = pAndExpr;
@@ -143912,7 +148598,7 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart(
               r = sqlite3GetTempRange(pParse, nPk);
               for(iPk=0; iPk<nPk; iPk++){
                 int iCol = pPk->aiColumn[iPk];
-                sqlite3ExprCodeGetColumnOfTable(v, pTab, iCur, iCol, r+iPk);
+                sqlite3ExprCodeGetColumnOfTable(v, pTab, iCur, iCol,r+iPk);
               }
 
               /* Check if the temp table already contains this key. If so,
@@ -144094,6 +148780,10 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart(
         VdbeNoopComment((v, "WhereTerm[%d] (%p) priority=%d",
                          pWC->nTerm-j, pTerm, iLoop));
       }
+      if( sqlite3WhereTrace & 0x800 ){
+        sqlite3DebugPrintf("Coding auxiliary constraint:\n");
+        sqlite3WhereTermPrint(pTerm, pWC->nTerm-j);
+      }
 #endif
       sqlite3ExprIfFalse(pParse, pE, addrCont, SQLITE_JUMPIFNULL);
       if( skipLikeAddr ) sqlite3VdbeJumpHere(v, skipLikeAddr);
@@ -144117,8 +148807,14 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart(
     if( (pTerm->eOperator & (WO_EQ|WO_IS))==0 ) continue;
     if( (pTerm->eOperator & WO_EQUIV)==0 ) continue;
     if( pTerm->leftCursor!=iCur ) continue;
-    if( pLevel->iLeftJoin ) continue;
+    if( pTabItem->fg.jointype & JT_LEFT ) continue;
     pE = pTerm->pExpr;
+#ifdef WHERETRACE_ENABLED /* 0x800 */
+    if( sqlite3WhereTrace & 0x800 ){
+      sqlite3DebugPrintf("Coding transitive constraint:\n");
+      sqlite3WhereTermPrint(pTerm, pWC->nTerm-j);
+    }
+#endif
     assert( !ExprHasProperty(pE, EP_FromJoin) );
     assert( (pTerm->prereqRight & pLevel->notReady)!=0 );
     pAlt = sqlite3WhereFindTerm(pWC, iCur, pTerm->u.leftColumn, notReady,
@@ -144161,6 +148857,17 @@ SQLITE_PRIVATE Bitmask sqlite3WhereCodeOneLoopStart(
     }
   }
 
+#if WHERETRACE_ENABLED /* 0x20800 */
+  if( sqlite3WhereTrace & 0x20000 ){
+    sqlite3DebugPrintf("All WHERE-clause terms after coding level %d:\n",
+                       iLevel);
+    sqlite3WhereClausePrint(pWC);
+  }
+  if( sqlite3WhereTrace & 0x800 ){
+    sqlite3DebugPrintf("End Coding level %d:  notReady=%llx\n",
+       iLevel, (u64)pLevel->notReady);
+  }
+#endif
   return pLevel->notReady;
 }
 
@@ -144277,39 +148984,14 @@ static int allowedOp(int op){
 /*
 ** Commute a comparison operator.  Expressions of the form "X op Y"
 ** are converted into "Y op X".
-**
-** If left/right precedence rules come into play when determining the
-** collating sequence, then COLLATE operators are adjusted to ensure
-** that the collating sequence does not change.  For example:
-** "Y collate NOCASE op X" becomes "X op Y" because any collation sequence on
-** the left hand side of a comparison overrides any collation sequence
-** attached to the right. For the same reason the EP_Collate flag
-** is not commuted.
-**
-** The return value is extra flags that are added to the WhereTerm object
-** after it is commuted.  The only extra flag ever added is TERM_NOPARTIDX
-** which prevents the term from being used to enable a partial index if
-** COLLATE changes have been made.
 */
 static u16 exprCommute(Parse *pParse, Expr *pExpr){
-  u16 expRight = (pExpr->pRight->flags & EP_Collate);
-  u16 expLeft = (pExpr->pLeft->flags & EP_Collate);
-  u16 wtFlags = 0;
-  assert( allowedOp(pExpr->op) && pExpr->op!=TK_IN );
-  if( expRight==expLeft ){
-    /* Either X and Y both have COLLATE operator or neither do */
-    if( expRight ){
-      /* Both X and Y have COLLATE operators.  Make sure X is always
-      ** used by clearing the EP_Collate flag from Y. */
-      pExpr->pRight->flags &= ~EP_Collate;
-      wtFlags |= TERM_NOPARTIDX;
-    }else if( sqlite3ExprCollSeq(pParse, pExpr->pLeft)!=0 ){
-      /* Neither X nor Y have COLLATE operators, but X has a non-default
-      ** collating sequence.  So add the EP_Collate marker on X to cause
-      ** it to be searched first. */
-      pExpr->pLeft->flags |= EP_Collate;
-      wtFlags |= TERM_NOPARTIDX;
-    }
+  if( pExpr->pLeft->op==TK_VECTOR
+   || pExpr->pRight->op==TK_VECTOR
+   || sqlite3BinaryCompareCollSeq(pParse, pExpr->pLeft, pExpr->pRight) !=
+      sqlite3BinaryCompareCollSeq(pParse, pExpr->pRight, pExpr->pLeft)
+  ){
+    pExpr->flags ^= EP_Commuted;
   }
   SWAP(Expr*,pExpr->pRight,pExpr->pLeft);
   if( pExpr->op>=TK_GT ){
@@ -144320,7 +149002,7 @@ static u16 exprCommute(Parse *pParse, Expr *pExpr){
     assert( pExpr->op>=TK_GT && pExpr->op<=TK_GE );
     pExpr->op = ((pExpr->op-TK_GT)^2)+TK_GT;
   }
-  return wtFlags;
+  return 0;
 }
 
 /*
@@ -144570,7 +149252,8 @@ static int isAuxiliaryVtabOperator(
     **       MATCH(expression,vtab_column)
     */
     pCol = pList->a[1].pExpr;
-    if( pCol->op==TK_COLUMN && IsVirtual(pCol->y.pTab) ){
+    testcase( pCol->op==TK_COLUMN && pCol->y.pTab==0 );
+    if( ExprIsVtab(pCol) ){
       for(i=0; i<ArraySize(aOp); i++){
         if( sqlite3StrICmp(pExpr->u.zToken, aOp[i].zOp)==0 ){
           *peOp2 = aOp[i].eOp2;
@@ -144592,7 +149275,8 @@ static int isAuxiliaryVtabOperator(
     ** with function names in an arbitrary case.
     */
     pCol = pList->a[0].pExpr;
-    if( pCol->op==TK_COLUMN && IsVirtual(pCol->y.pTab) ){
+    testcase( pCol->op==TK_COLUMN && pCol->y.pTab==0 );
+    if( ExprIsVtab(pCol) ){
       sqlite3_vtab *pVtab;
       sqlite3_module *pMod;
       void (*xNotUsed)(sqlite3_context*,int,sqlite3_value**);
@@ -144615,10 +149299,12 @@ static int isAuxiliaryVtabOperator(
     int res = 0;
     Expr *pLeft = pExpr->pLeft;
     Expr *pRight = pExpr->pRight;
-    if( pLeft->op==TK_COLUMN && IsVirtual(pLeft->y.pTab) ){
+    testcase( pLeft->op==TK_COLUMN && pLeft->y.pTab==0 );
+    if( ExprIsVtab(pLeft) ){
       res++;
     }
-    if( pRight && pRight->op==TK_COLUMN && IsVirtual(pRight->y.pTab) ){
+    testcase( pRight && pRight->op==TK_COLUMN && pRight->y.pTab==0 );
+    if( pRight && ExprIsVtab(pRight) ){
       res++;
       SWAP(Expr*, pLeft, pRight);
     }
@@ -145098,7 +149784,7 @@ static int termIsEquivalence(Parse *pParse, Expr *pExpr){
   ){
     return 0;
   }
-  pColl = sqlite3BinaryCompareCollSeq(pParse, pExpr->pLeft, pExpr->pRight);
+  pColl = sqlite3ExprCompareCollSeq(pParse, pExpr);
   if( sqlite3IsBinary(pColl) ) return 1;
   return sqlite3ExprCollSeqMatch(pParse, pExpr->pLeft, pExpr->pRight);
 }
@@ -145491,6 +150177,7 @@ static void exprAnalyze(
             0, sqlite3ExprDup(db, pRight, 0));
         if( ExprHasProperty(pExpr, EP_FromJoin) && pNewExpr ){
           ExprSetProperty(pNewExpr, EP_FromJoin);
+          pNewExpr->iRightJoinTable = pExpr->iRightJoinTable;
         }
         idxNew = whereClauseInsert(pWC, pNewExpr, TERM_VIRTUAL|TERM_DYNAMIC);
         testcase( idxNew==0 );
@@ -145547,11 +150234,15 @@ static void exprAnalyze(
   ** expression). The WhereTerm.iField variable identifies the index within
   ** the vector on the LHS that the virtual term represents.
   **
-  ** This only works if the RHS is a simple SELECT, not a compound
+  ** This only works if the RHS is a simple SELECT (not a compound) that does
+  ** not use window functions.
   */
   if( pWC->op==TK_AND && pExpr->op==TK_IN && pTerm->iField==0
    && pExpr->pLeft->op==TK_VECTOR
    && pExpr->x.pSelect->pPrior==0
+#ifndef SQLITE_OMIT_WINDOWFUNC
+   && pExpr->x.pSelect->pWin==0
+#endif
   ){
     int i;
     for(i=0; i<sqlite3ExprVectorSize(pExpr->pLeft); i++){
@@ -145709,9 +150400,10 @@ SQLITE_PRIVATE Bitmask sqlite3WhereExprUsageNN(WhereMaskSet *pMaskSet, Expr *p){
     mask |= sqlite3WhereExprListUsage(pMaskSet, p->x.pList);
   }
 #ifndef SQLITE_OMIT_WINDOWFUNC
-  if( p->op==TK_FUNCTION && p->y.pWin ){
+  if( (p->op==TK_FUNCTION || p->op==TK_AGG_FUNCTION) && p->y.pWin ){
     mask |= sqlite3WhereExprListUsage(pMaskSet, p->y.pWin->pPartition);
     mask |= sqlite3WhereExprListUsage(pMaskSet, p->y.pWin->pOrderBy);
+    mask |= sqlite3WhereExprUsage(pMaskSet, p->y.pWin->pFilter);
   }
 #endif
   return mask;
@@ -145787,6 +150479,9 @@ SQLITE_PRIVATE void sqlite3WhereTabFuncArgs(
     pRhs = sqlite3PExpr(pParse, TK_UPLUS,
         sqlite3ExprDup(pParse->db, pArgs->a[j].pExpr, 0), 0);
     pTerm = sqlite3PExpr(pParse, TK_EQ, pColRef, pRhs);
+    if( pItem->fg.jointype & JT_LEFT ){
+      sqlite3SetJoinExpr(pTerm, pItem->iCursor);
+    }
     whereClauseInsert(pWC, pTerm, TERM_DYNAMIC);
   }
 }
@@ -145854,8 +150549,12 @@ SQLITE_PRIVATE int sqlite3WhereIsDistinct(WhereInfo *pWInfo){
 }
 
 /*
-** Return TRUE if the WHERE clause returns rows in ORDER BY order.
-** Return FALSE if the output needs to be sorted.
+** Return the number of ORDER BY terms that are satisfied by the
+** WHERE clause.  A return of 0 means that the output must be
+** completely sorted.  A return equal to the number of ORDER BY
+** terms means that no sorting is needed at all.  A return that
+** is positive but less than the number of ORDER BY terms means that
+** block sorting is required.
 */
 SQLITE_PRIVATE int sqlite3WhereIsOrdered(WhereInfo *pWInfo){
   return pWInfo->nOBSat;
@@ -145915,7 +150614,7 @@ SQLITE_PRIVATE int sqlite3WhereBreakLabel(WhereInfo *pWInfo){
 
 /*
 ** Return ONEPASS_OFF (0) if an UPDATE or DELETE statement is unable to
-** operate directly on the rowis returned by a WHERE clause.  Return
+** operate directly on the rowids returned by a WHERE clause.  Return
 ** ONEPASS_SINGLE (1) if the statement can operation directly because only
 ** a single row is to be changed.  Return ONEPASS_MULTI (2) if the one-pass
 ** optimization can be used on multiple
@@ -145943,6 +150642,14 @@ SQLITE_PRIVATE int sqlite3WhereOkOnePass(WhereInfo *pWInfo, int *aiCur){
 }
 
 /*
+** Return TRUE if the WHERE loop uses the OP_DeferredSeek opcode to move
+** the data cursor to the row selected by the index cursor.
+*/
+SQLITE_PRIVATE int sqlite3WhereUsesDeferredSeek(WhereInfo *pWInfo){
+  return pWInfo->bDeferredSeek;
+}
+
+/*
 ** Move the content of pSrc into pDest
 */
 static void whereOrMove(WhereOrSet *pDest, WhereOrSet *pSrc){
@@ -146074,8 +150781,7 @@ static WhereTerm *whereScanNext(WhereScan *pScan){
                 continue;
               }
               assert(pX->pLeft);
-              pColl = sqlite3BinaryCompareCollSeq(pParse,
-                                                  pX->pLeft, pX->pRight);
+              pColl = sqlite3ExprCompareCollSeq(pParse, pX);
               if( pColl==0 ) pColl = pParse->db->pDfltColl;
               if( sqlite3StrICmp(pColl->zName, pScan->zCollName) ){
                 continue;
@@ -146401,7 +151107,7 @@ static void translateColumnToCopy(
 ** are no-ops.
 */
 #if !defined(SQLITE_OMIT_VIRTUALTABLE) && defined(WHERETRACE_ENABLED)
-static void TRACE_IDX_INPUTS(sqlite3_index_info *p){
+static void whereTraceIndexInfoInputs(sqlite3_index_info *p){
   int i;
   if( !sqlite3WhereTrace ) return;
   for(i=0; i<p->nConstraint; i++){
@@ -146419,7 +151125,7 @@ static void TRACE_IDX_INPUTS(sqlite3_index_info *p){
        p->aOrderBy[i].desc);
   }
 }
-static void TRACE_IDX_OUTPUTS(sqlite3_index_info *p){
+static void whereTraceIndexInfoOutputs(sqlite3_index_info *p){
   int i;
   if( !sqlite3WhereTrace ) return;
   for(i=0; i<p->nConstraint; i++){
@@ -146435,8 +151141,8 @@ static void TRACE_IDX_OUTPUTS(sqlite3_index_info *p){
   sqlite3DebugPrintf("  estimatedRows=%lld\n", p->estimatedRows);
 }
 #else
-#define TRACE_IDX_INPUTS(A)
-#define TRACE_IDX_OUTPUTS(A)
+#define whereTraceIndexInfoInputs(A)
+#define whereTraceIndexInfoOutputs(A)
 #endif
 
 #ifndef SQLITE_OMIT_AUTOMATIC_INDEX
@@ -146596,7 +151302,8 @@ static void constructAutomaticIndex(
         Expr *pX = pTerm->pExpr;
         idxCols |= cMask;
         pIdx->aiColumn[n] = pTerm->u.leftColumn;
-        pColl = sqlite3BinaryCompareCollSeq(pParse, pX->pLeft, pX->pRight);
+        pColl = sqlite3ExprCompareCollSeq(pParse, pX);
+        assert( pColl!=0 || pParse->nErr>0 ); /* TH3 collate01.800 */
         pIdx->azColl[n] = pColl ? pColl->zName : sqlite3StrBINARY;
         n++;
       }
@@ -146665,8 +151372,8 @@ static void constructAutomaticIndex(
     pTabItem->fg.viaCoroutine = 0;
   }else{
     sqlite3VdbeAddOp2(v, OP_Next, pLevel->iTabCur, addrTop+1); VdbeCoverage(v);
+    sqlite3VdbeChangeP5(v, SQLITE_STMTSTATUS_AUTOINDEX);
   }
-  sqlite3VdbeChangeP5(v, SQLITE_STMTSTATUS_AUTOINDEX);
   sqlite3VdbeJumpHere(v, addrTop);
   sqlite3ReleaseTempReg(pParse, regRecord);
 
@@ -146745,23 +151452,14 @@ static sqlite3_index_info *allocateIndexInfo(
     sqlite3ErrorMsg(pParse, "out of memory");
     return 0;
   }
-
-  /* Initialize the structure.  The sqlite3_index_info structure contains
-  ** many fields that are declared "const" to prevent xBestIndex from
-  ** changing them.  We have to do some funky casting in order to
-  ** initialize those fields.
-  */
   pHidden = (struct HiddenIndexInfo*)&pIdxInfo[1];
   pIdxCons = (struct sqlite3_index_constraint*)&pHidden[1];
   pIdxOrderBy = (struct sqlite3_index_orderby*)&pIdxCons[nTerm];
   pUsage = (struct sqlite3_index_constraint_usage*)&pIdxOrderBy[nOrderBy];
-  *(int*)&pIdxInfo->nConstraint = nTerm;
-  *(int*)&pIdxInfo->nOrderBy = nOrderBy;
-  *(struct sqlite3_index_constraint**)&pIdxInfo->aConstraint = pIdxCons;
-  *(struct sqlite3_index_orderby**)&pIdxInfo->aOrderBy = pIdxOrderBy;
-  *(struct sqlite3_index_constraint_usage**)&pIdxInfo->aConstraintUsage =
-                                                                   pUsage;
-
+  pIdxInfo->nOrderBy = nOrderBy;
+  pIdxInfo->aConstraint = pIdxCons;
+  pIdxInfo->aOrderBy = pIdxOrderBy;
+  pIdxInfo->aConstraintUsage = pUsage;
   pHidden->pWC = pWC;
   pHidden->pParse = pParse;
   for(i=j=0, pTerm=pWC->a; i<pWC->nTerm; i++, pTerm++){
@@ -146775,18 +151473,13 @@ static sqlite3_index_info *allocateIndexInfo(
     testcase( pTerm->eOperator & WO_ALL );
     if( (pTerm->eOperator & ~(WO_EQUIV))==0 ) continue;
     if( pTerm->wtFlags & TERM_VNULL ) continue;
+
+    /* tag-20191211-002: WHERE-clause constraints are not useful to the
+    ** right-hand table of a LEFT JOIN.  See tag-20191211-001 for the
+    ** equivalent restriction for ordinary tables. */
     if( (pSrc->fg.jointype & JT_LEFT)!=0
      && !ExprHasProperty(pTerm->pExpr, EP_FromJoin)
-     && (pTerm->eOperator & (WO_IS|WO_ISNULL))
     ){
-      /* An "IS" term in the WHERE clause where the virtual table is the rhs
-      ** of a LEFT JOIN. Do not pass this term to the virtual table
-      ** implementation, as this can lead to incorrect results from SQL such
-      ** as:
-      **
-      **   "LEFT JOIN vtab WHERE vtab.col IS NULL"  */
-      testcase( pTerm->eOperator & WO_ISNULL );
-      testcase( pTerm->eOperator & WO_IS );
       continue;
     }
     assert( pTerm->u.leftColumn>=(-1) );
@@ -146817,7 +151510,8 @@ static sqlite3_index_info *allocateIndexInfo(
       if( op & (WO_LT|WO_LE|WO_GT|WO_GE)
        && sqlite3ExprIsVector(pTerm->pExpr->pRight)
       ){
-        if( i<16 ) mNoOmit |= (1 << i);
+        testcase( j!=i );
+        if( j<16 ) mNoOmit |= (1 << j);
         if( op==WO_LT ) pIdxCons[j].op = WO_LE;
         if( op==WO_GT ) pIdxCons[j].op = WO_GE;
       }
@@ -146825,6 +151519,7 @@ static sqlite3_index_info *allocateIndexInfo(
 
     j++;
   }
+  pIdxInfo->nConstraint = j;
   for(i=0; i<nOrderBy; i++){
     Expr *pExpr = pOrderBy->a[i].pExpr;
     pIdxOrderBy[i].iColumn = pExpr->iColumn;
@@ -146855,9 +151550,9 @@ static int vtabBestIndex(Parse *pParse, Table *pTab, sqlite3_index_info *p){
   sqlite3_vtab *pVtab = sqlite3GetVTable(pParse->db, pTab)->pVtab;
   int rc;
 
-  TRACE_IDX_INPUTS(p);
+  whereTraceIndexInfoInputs(p);
   rc = pVtab->pModule->xBestIndex(pVtab, p);
-  TRACE_IDX_OUTPUTS(p);
+  whereTraceIndexInfoOutputs(p);
 
   if( rc!=SQLITE_OK && rc!=SQLITE_CONSTRAINT ){
     if( rc==SQLITE_NOMEM ){
@@ -147538,16 +152233,17 @@ static int whereInScanEst(
 /*
 ** Print the content of a WhereTerm object
 */
-static void whereTermPrint(WhereTerm *pTerm, int iTerm){
+SQLITE_PRIVATE void sqlite3WhereTermPrint(WhereTerm *pTerm, int iTerm){
   if( pTerm==0 ){
     sqlite3DebugPrintf("TERM-%-3d NULL\n", iTerm);
   }else{
-    char zType[4];
+    char zType[8];
     char zLeft[50];
-    memcpy(zType, "...", 4);
+    memcpy(zType, "....", 5);
     if( pTerm->wtFlags & TERM_VIRTUAL ) zType[0] = 'V';
     if( pTerm->eOperator & WO_EQUIV  ) zType[1] = 'E';
     if( ExprHasProperty(pTerm->pExpr, EP_FromJoin) ) zType[2] = 'L';
+    if( pTerm->wtFlags & TERM_CODED  ) zType[3] = 'C';
     if( pTerm->eOperator & WO_SINGLE ){
       sqlite3_snprintf(sizeof(zLeft),zLeft,"left={%d:%d}",
                        pTerm->leftCursor, pTerm->u.leftColumn);
@@ -147558,14 +152254,21 @@ static void whereTermPrint(WhereTerm *pTerm, int iTerm){
       sqlite3_snprintf(sizeof(zLeft),zLeft,"left=%d", pTerm->leftCursor);
     }
     sqlite3DebugPrintf(
-       "TERM-%-3d %p %s %-12s prob=%-3d op=0x%03x wtFlags=0x%04x",
-       iTerm, pTerm, zType, zLeft, pTerm->truthProb,
-       pTerm->eOperator, pTerm->wtFlags);
+       "TERM-%-3d %p %s %-12s op=%03x wtFlags=%04x",
+       iTerm, pTerm, zType, zLeft, pTerm->eOperator, pTerm->wtFlags);
+    /* The 0x10000 .wheretrace flag causes extra information to be
+    ** shown about each Term */
+    if( sqlite3WhereTrace & 0x10000 ){
+      sqlite3DebugPrintf(" prob=%-3d prereq=%llx,%llx",
+        pTerm->truthProb, (u64)pTerm->prereqAll, (u64)pTerm->prereqRight);
+    }
     if( pTerm->iField ){
-      sqlite3DebugPrintf(" iField=%d\n", pTerm->iField);
-    }else{
-      sqlite3DebugPrintf("\n");
+      sqlite3DebugPrintf(" iField=%d", pTerm->iField);
+    }
+    if( pTerm->iParent>=0 ){
+      sqlite3DebugPrintf(" iParent=%d", pTerm->iParent);
     }
+    sqlite3DebugPrintf("\n");
     sqlite3TreeViewExpr(0, pTerm->pExpr, 0);
   }
 }
@@ -147578,7 +152281,7 @@ static void whereTermPrint(WhereTerm *pTerm, int iTerm){
 SQLITE_PRIVATE void sqlite3WhereClausePrint(WhereClause *pWC){
   int i;
   for(i=0; i<pWC->nTerm; i++){
-    whereTermPrint(&pWC->a[i], i);
+    sqlite3WhereTermPrint(&pWC->a[i], i);
   }
 }
 #endif
@@ -147587,7 +152290,7 @@ SQLITE_PRIVATE void sqlite3WhereClausePrint(WhereClause *pWC){
 /*
 ** Print a WhereLoop object for debugging purposes
 */
-static void whereLoopPrint(WhereLoop *p, WhereClause *pWC){
+SQLITE_PRIVATE void sqlite3WhereLoopPrint(WhereLoop *p, WhereClause *pWC){
   WhereInfo *pWInfo = pWC->pWInfo;
   int nb = 1+(pWInfo->pTabList->nSrc+3)/4;
   struct SrcList_item *pItem = pWInfo->pTabList->a + p->iTab;
@@ -147600,7 +152303,7 @@ static void whereLoopPrint(WhereLoop *p, WhereClause *pWC){
   if( (p->wsFlags & WHERE_VIRTUALTABLE)==0 ){
     const char *zName;
     if( p->u.btree.pIndex && (zName = p->u.btree.pIndex->zName)!=0 ){
-      if( strncmp(zName, "sqlcipher_autoindex_", 20)==0 ){
+      if( strncmp(zName, "sqlite_autoindex_", 17)==0 ){
         int i = sqlite3Strlen30(zName) - 1;
         while( zName[i]!='_' ) i--;
         zName += i;
@@ -147612,7 +152315,7 @@ static void whereLoopPrint(WhereLoop *p, WhereClause *pWC){
   }else{
     char *z;
     if( p->u.vtab.idxStr ){
-      z = sqlite3_mprintf("(%d,\"%s\",%x)",
+      z = sqlite3_mprintf("(%d,\"%s\",%#x)",
                 p->u.vtab.idxNum, p->u.vtab.idxStr, p->u.vtab.omitMask);
     }else{
       z = sqlite3_mprintf("(%d,%x)", p->u.vtab.idxNum, p->u.vtab.omitMask);
@@ -147629,7 +152332,7 @@ static void whereLoopPrint(WhereLoop *p, WhereClause *pWC){
   if( p->nLTerm && (sqlite3WhereTrace & 0x100)!=0 ){
     int i;
     for(i=0; i<p->nLTerm; i++){
-      whereTermPrint(p->aLTerm[i], i);
+      sqlite3WhereTermPrint(p->aLTerm[i], i);
     }
   }
 }
@@ -147733,6 +152436,7 @@ static void whereInfoFree(sqlite3 *db, WhereInfo *pWInfo){
     pWInfo->pLoops = p->pNextLoop;
     whereLoopDelete(db, p);
   }
+  assert( pWInfo->pExprMods==0 );
   sqlite3DbFreeNN(db, pWInfo);
 }
 
@@ -147934,6 +152638,8 @@ static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){
   }
   pBuilder->iPlanLimit--;
 
+  whereLoopAdjustCost(pWInfo->pLoops, pTemplate);
+
   /* If pBuilder->pOrSet is defined, then only keep track of the costs
   ** and prereqs.
   */
@@ -147948,7 +152654,7 @@ static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){
 #if WHERETRACE_ENABLED /* 0x8 */
       if( sqlite3WhereTrace & 0x8 ){
         sqlite3DebugPrintf(x?"   or-%d:  ":"   or-X:  ", n);
-        whereLoopPrint(pTemplate, pBuilder->pWC);
+        sqlite3WhereLoopPrint(pTemplate, pBuilder->pWC);
       }
 #endif
     }
@@ -147957,7 +152663,6 @@ static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){
 
   /* Look for an existing WhereLoop to replace with pTemplate
   */
-  whereLoopAdjustCost(pWInfo->pLoops, pTemplate);
   ppPrev = whereLoopFindLesser(&pWInfo->pLoops, pTemplate);
 
   if( ppPrev==0 ){
@@ -147966,7 +152671,7 @@ static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){
 #if WHERETRACE_ENABLED /* 0x8 */
     if( sqlite3WhereTrace & 0x8 ){
       sqlite3DebugPrintf("   skip: ");
-      whereLoopPrint(pTemplate, pBuilder->pWC);
+      sqlite3WhereLoopPrint(pTemplate, pBuilder->pWC);
     }
 #endif
     return SQLITE_OK;
@@ -147982,12 +152687,12 @@ static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){
   if( sqlite3WhereTrace & 0x8 ){
     if( p!=0 ){
       sqlite3DebugPrintf("replace: ");
-      whereLoopPrint(p, pBuilder->pWC);
+      sqlite3WhereLoopPrint(p, pBuilder->pWC);
       sqlite3DebugPrintf("   with: ");
     }else{
       sqlite3DebugPrintf("    add: ");
     }
-    whereLoopPrint(pTemplate, pBuilder->pWC);
+    sqlite3WhereLoopPrint(pTemplate, pBuilder->pWC);
   }
 #endif
   if( p==0 ){
@@ -148011,7 +152716,7 @@ static int whereLoopInsert(WhereLoopBuilder *pBuilder, WhereLoop *pTemplate){
 #if WHERETRACE_ENABLED /* 0x8 */
       if( sqlite3WhereTrace & 0x8 ){
         sqlite3DebugPrintf(" delete: ");
-        whereLoopPrint(pToDel, pBuilder->pWC);
+        sqlite3WhereLoopPrint(pToDel, pBuilder->pWC);
       }
 #endif
       whereLoopDelete(db, pToDel);
@@ -148087,7 +152792,9 @@ static void whereLoopOutputAdjust(
         /* In the absence of explicit truth probabilities, use heuristics to
         ** guess a reasonable truth probability. */
         pLoop->nOut--;
-        if( pTerm->eOperator&(WO_EQ|WO_IS) ){
+        if( (pTerm->eOperator&(WO_EQ|WO_IS))!=0
+         && (pTerm->wtFlags & TERM_HIGHTRUTH)==0  /* tag-20200224-1 */
+        ){
           Expr *pRight = pTerm->pExpr->pRight;
           int k = 0;
           testcase( pTerm->pExpr->op==TK_IS );
@@ -148096,7 +152803,10 @@ static void whereLoopOutputAdjust(
           }else{
             k = 20;
           }
-          if( iReduce<k ) iReduce = k;
+          if( iReduce<k ){
+            pTerm->wtFlags |= TERM_HEURTRUTH;
+            iReduce = k;
+          }
         }
       }
     }
@@ -148220,8 +152930,9 @@ static int whereLoopAddBtreeIndex(
 
   pNew = pBuilder->pNew;
   if( db->mallocFailed ) return SQLITE_NOMEM_BKPT;
-  WHERETRACE(0x800, ("BEGIN %s.addBtreeIdx(%s), nEq=%d\n",
-                     pProbe->pTable->zName,pProbe->zName, pNew->u.btree.nEq));
+  WHERETRACE(0x800, ("BEGIN %s.addBtreeIdx(%s), nEq=%d, nSkip=%d\n",
+                     pProbe->pTable->zName,pProbe->zName,
+                     pNew->u.btree.nEq, pNew->nSkip));
 
   assert( (pNew->wsFlags & WHERE_VIRTUALTABLE)==0 );
   assert( (pNew->wsFlags & WHERE_TOP_LIMIT)==0 );
@@ -148267,9 +152978,9 @@ static int whereLoopAddBtreeIndex(
     ** to mix with a lower range bound from some other source */
     if( pTerm->wtFlags & TERM_LIKEOPT && pTerm->eOperator==WO_LT ) continue;
 
-    /* Do not allow constraints from the WHERE clause to be used by the
-    ** right table of a LEFT JOIN.  Only constraints in the ON clause are
-    ** allowed */
+    /* tag-20191211-001:  Do not allow constraints from the WHERE clause to
+    ** be used by the right table of a LEFT JOIN.  Only constraints in the
+    ** ON clause are allowed.  See tag-20191211-002 for the vtab equivalent. */
     if( (pSrc->fg.jointype & JT_LEFT)!=0
      && !ExprHasProperty(pTerm->pExpr, EP_FromJoin)
     ){
@@ -148277,9 +152988,9 @@ static int whereLoopAddBtreeIndex(
     }
 
     if( IsUniqueIndex(pProbe) && saved_nEq==pProbe->nKeyCol-1 ){
-      pBuilder->bldFlags |= SQLITE_BLDF_UNIQUE;
+      pBuilder->bldFlags1 |= SQLITE_BLDF1_UNIQUE;
     }else{
-      pBuilder->bldFlags |= SQLITE_BLDF_INDEXED;
+      pBuilder->bldFlags1 |= SQLITE_BLDF1_INDEXED;
     }
     pNew->wsFlags = saved_wsFlags;
     pNew->u.btree.nEq = saved_nEq;
@@ -148444,6 +153155,27 @@ static int whereLoopAddBtreeIndex(
           if( rc!=SQLITE_OK ) break;          /* Jump out of the pTerm loop */
           if( nOut ){
             pNew->nOut = sqlite3LogEst(nOut);
+            if( nEq==1
+             /* TUNING: Mark terms as "low selectivity" if they seem likely
+             ** to be true for half or more of the rows in the table.
+             ** See tag-202002240-1 */
+             && pNew->nOut+10 > pProbe->aiRowLogEst[0]
+            ){
+#if WHERETRACE_ENABLED /* 0x01 */
+              if( sqlite3WhereTrace & 0x01 ){
+                sqlite3DebugPrintf(
+                   "STAT4 determines term has low selectivity:\n");
+                sqlite3WhereTermPrint(pTerm, 999);
+              }
+#endif
+              pTerm->wtFlags |= TERM_HIGHTRUTH;
+              if( pTerm->wtFlags & TERM_HEURTRUTH ){
+                /* If the term has previously been used with an assumption of
+                ** higher selectivity, then set the flag to rerun the
+                ** loop computations. */
+                pBuilder->bldFlags2 |= SQLITE_BLDF2_2NDPASS;
+              }
+            }
             if( pNew->nOut>saved_nOut ) pNew->nOut = saved_nOut;
             pNew->nOut -= nIn;
           }
@@ -148518,7 +153250,9 @@ static int whereLoopAddBtreeIndex(
   assert( 42==sqlite3LogEst(18) );
   if( saved_nEq==saved_nSkip
    && saved_nEq+1<pProbe->nKeyCol
+   && saved_nEq==pNew->nLTerm
    && pProbe->noSkipScan==0
+   && pProbe->hasStat1!=0
    && OptimizationEnabled(db, SQLITE_SkipScan)
    && pProbe->aiRowLogEst[saved_nEq+1]>=42  /* TUNING: Minimum for skip-scan */
    && (rc = whereLoopResize(db, pNew, pNew->nLTerm+1))==SQLITE_OK
@@ -148586,20 +153320,25 @@ static int indexMightHelpWithOrderBy(
 /* Check to see if a partial index with pPartIndexWhere can be used
 ** in the current query.  Return true if it can be and false if not.
 */
-static int whereUsablePartialIndex(int iTab, WhereClause *pWC, Expr *pWhere){
+static int whereUsablePartialIndex(
+  int iTab,             /* The table for which we want an index */
+  int isLeft,           /* True if iTab is the right table of a LEFT JOIN */
+  WhereClause *pWC,     /* The WHERE clause of the query */
+  Expr *pWhere          /* The WHERE clause from the partial index */
+){
   int i;
   WhereTerm *pTerm;
   Parse *pParse = pWC->pWInfo->pParse;
   while( pWhere->op==TK_AND ){
-    if( !whereUsablePartialIndex(iTab,pWC,pWhere->pLeft) ) return 0;
+    if( !whereUsablePartialIndex(iTab,isLeft,pWC,pWhere->pLeft) ) return 0;
     pWhere = pWhere->pRight;
   }
   if( pParse->db->flags & SQLITE_EnableQPSG ) pParse = 0;
   for(i=0, pTerm=pWC->a; i<pWC->nTerm; i++, pTerm++){
     Expr *pExpr;
-    if( pTerm->wtFlags & TERM_NOPARTIDX ) continue;
     pExpr = pTerm->pExpr;
     if( (!ExprHasProperty(pExpr, EP_FromJoin) || pExpr->iRightJoinTable==iTab)
+     && (isLeft==0 || ExprHasProperty(pExpr, EP_FromJoin))
      && sqlite3ExprImpliesExpr(pParse, pExpr, pWhere, iTab)
     ){
       return 1;
@@ -148762,8 +153501,11 @@ static int whereLoopAddBtree(
   for(; rc==SQLITE_OK && pProbe;
       pProbe=(pSrc->pIBIndex ? 0 : pProbe->pNext), iSortIdx++
   ){
+    int isLeft = (pSrc->fg.jointype & JT_OUTER)!=0;
     if( pProbe->pPartIdxWhere!=0
-     && !whereUsablePartialIndex(pSrc->iCursor, pWC, pProbe->pPartIdxWhere) ){
+     && !whereUsablePartialIndex(pSrc->iCursor, isLeft, pWC,
+                                 pProbe->pPartIdxWhere)
+    ){
       testcase( pNew->iTab!=pSrc->iCursor );  /* See ticket [98d973b8f5] */
       continue;  /* Partial index inappropriate for this query */
     }
@@ -148780,6 +153522,7 @@ static int whereLoopAddBtree(
     pNew->nOut = rSize;
     pNew->u.btree.pIndex = pProbe;
     b = indexMightHelpWithOrderBy(pBuilder, pProbe, pSrc->iCursor);
+
     /* The ONEPASS_DESIRED flags never occurs together with ORDER BY */
     assert( (pWInfo->wctrlFlags & WHERE_ONEPASS_DESIRED)==0 || b==0 );
     if( pProbe->idxType==SQLITE_IDXTYPE_IPK ){
@@ -148809,6 +153552,7 @@ static int whereLoopAddBtree(
       if( b
        || !HasRowid(pTab)
        || pProbe->pPartIdxWhere!=0
+       || pSrc->fg.isIndexedBy
        || ( m==0
          && pProbe->bUnordered==0
          && (pProbe->szIdxRow<pTab->szTabRow)
@@ -148858,9 +153602,9 @@ static int whereLoopAddBtree(
       }
     }
 
-    pBuilder->bldFlags = 0;
+    pBuilder->bldFlags1 = 0;
     rc = whereLoopAddBtreeIndex(pBuilder, pSrc, pProbe, 0);
-    if( pBuilder->bldFlags==SQLITE_BLDF_INDEXED ){
+    if( pBuilder->bldFlags1==SQLITE_BLDF1_INDEXED ){
       /* If a non-unique index is used, or if a prefix of the key for
       ** unique index is used (making the index functionally non-unique)
       ** then the sqlite_stat1 data becomes important for scoring the
@@ -148990,7 +153734,14 @@ static int whereLoopAddVirtualOne(
       if( iTerm>mxTerm ) mxTerm = iTerm;
       testcase( iTerm==15 );
       testcase( iTerm==16 );
-      if( iTerm<16 && pUsage[i].omit ) pNew->u.vtab.omitMask |= 1<<iTerm;
+      if( pUsage[i].omit ){
+        if( i<16 && ((1<<i)&mNoOmit)==0 ){
+          testcase( i!=iTerm );
+          pNew->u.vtab.omitMask |= 1<<iTerm;
+        }else{
+          testcase( i!=iTerm );
+        }
+      }
       if( (pTerm->eOperator & WO_IN)!=0 ){
         /* A virtual table that is constrained by an IN clause may not
         ** consume the ORDER BY clause because (1) the order of IN terms
@@ -149003,7 +153754,6 @@ static int whereLoopAddVirtualOne(
       }
     }
   }
-  pNew->u.vtab.omitMask &= ~mNoOmit;
 
   pNew->nLTerm = mxTerm+1;
   for(i=0; i<=mxTerm; i++){
@@ -149060,7 +153810,7 @@ SQLITE_API const char *sqlite3_vtab_collation(sqlite3_index_info *pIdxInfo, int
     int iTerm = pIdxInfo->aConstraint[iCons].iTermOffset;
     Expr *pX = pHidden->pWC->a[iTerm].pExpr;
     if( pX->pLeft ){
-      pC = sqlite3BinaryCompareCollSeq(pHidden->pParse, pX->pLeft, pX->pRight);
+      pC = sqlite3ExprCompareCollSeq(pHidden->pParse, pX);
     }
     zRet = (pC ? pC->zName : sqlite3StrBINARY);
   }
@@ -149285,7 +154035,8 @@ static int whereLoopAddOr(
         if( rc==SQLITE_OK ){
           rc = whereLoopAddOr(&sSubBuild, mPrereq, mUnusable);
         }
-        assert( rc==SQLITE_OK || sCur.n==0 );
+        assert( rc==SQLITE_OK || rc==SQLITE_DONE || sCur.n==0 );
+        testcase( rc==SQLITE_DONE );
         if( sCur.n==0 ){
           sSum.n = 0;
           break;
@@ -149349,7 +154100,6 @@ static int whereLoopAddAll(WhereLoopBuilder *pBuilder){
   sqlite3 *db = pWInfo->pParse->db;
   int rc = SQLITE_OK;
   WhereLoop *pNew;
-  u8 priorJointype = 0;
 
   /* Loop over the tables in the join, from left to right */
   pNew = pBuilder->pNew;
@@ -149360,12 +154110,13 @@ static int whereLoopAddAll(WhereLoopBuilder *pBuilder){
     pNew->iTab = iTab;
     pBuilder->iPlanLimit += SQLITE_QUERY_PLANNER_LIMIT_INCR;
     pNew->maskSelf = sqlite3WhereGetMask(&pWInfo->sMaskSet, pItem->iCursor);
-    if( ((pItem->fg.jointype|priorJointype) & (JT_LEFT|JT_CROSS))!=0 ){
+    if( (pItem->fg.jointype & (JT_LEFT|JT_CROSS))!=0 ){
       /* This condition is true when pItem is the FROM clause term on the
       ** right-hand-side of a LEFT or CROSS JOIN.  */
       mPrereq = mPrior;
+    }else{
+      mPrereq = 0;
     }
-    priorJointype = pItem->fg.jointype;
 #ifndef SQLITE_OMIT_VIRTUALTABLE
     if( IsVirtual(pItem->pTab) ){
       struct SrcList_item *p;
@@ -149483,7 +154234,9 @@ static i8 wherePathSatisfiesOrderBy(
   orderDistinctMask = 0;
   ready = 0;
   eqOpMask = WO_EQ | WO_IS | WO_ISNULL;
-  if( wctrlFlags & WHERE_ORDERBY_LIMIT ) eqOpMask |= WO_IN;
+  if( wctrlFlags & (WHERE_ORDERBY_LIMIT|WHERE_ORDERBY_MAX|WHERE_ORDERBY_MIN) ){
+    eqOpMask |= WO_IN;
+  }
   for(iLoop=0; isOrderDistinct && obSat<obDone && iLoop<=nLoop; iLoop++){
     if( iLoop>0 ) ready |= pLoop->maskSelf;
     if( iLoop<nLoop ){
@@ -149493,7 +154246,9 @@ static i8 wherePathSatisfiesOrderBy(
       pLoop = pLast;
     }
     if( pLoop->wsFlags & WHERE_VIRTUALTABLE ){
-      if( pLoop->u.vtab.isOrdered ) obSat = obDone;
+      if( pLoop->u.vtab.isOrdered && (wctrlFlags & WHERE_DISTINCTBY)==0 ){
+        obSat = obDone;
+      }
       break;
     }else if( wctrlFlags & WHERE_DISTINCTBY ){
       pLoop->u.btree.nDistinctCol = 0;
@@ -149517,13 +154272,17 @@ static i8 wherePathSatisfiesOrderBy(
         /* IN terms are only valid for sorting in the ORDER BY LIMIT
         ** optimization, and then only if they are actually used
         ** by the query plan */
-        assert( wctrlFlags & WHERE_ORDERBY_LIMIT );
+        assert( wctrlFlags &
+               (WHERE_ORDERBY_LIMIT|WHERE_ORDERBY_MIN|WHERE_ORDERBY_MAX) );
         for(j=0; j<pLoop->nLTerm && pTerm!=pLoop->aLTerm[j]; j++){}
         if( j>=pLoop->nLTerm ) continue;
       }
       if( (pTerm->eOperator&(WO_EQ|WO_IS))!=0 && pOBExpr->iColumn>=0 ){
-        if( sqlite3ExprCollSeqMatch(pWInfo->pParse,
-                  pOrderBy->a[i].pExpr, pTerm->pExpr)==0 ){
+        Parse *pParse = pWInfo->pParse;
+        CollSeq *pColl1 = sqlite3ExprNNCollSeq(pParse, pOrderBy->a[i].pExpr);
+        CollSeq *pColl2 = sqlite3ExprCompareCollSeq(pParse, pTerm->pExpr);
+        assert( pColl1 );
+        if( pColl2==0 || sqlite3StrICmp(pColl1->zName, pColl2->zName) ){
           continue;
         }
         testcase( pTerm->pExpr->op==TK_IS );
@@ -150162,6 +154921,11 @@ static int wherePathSolver(WhereInfo *pWInfo, LogEst nRowEst){
             }
           }
         }
+      }else if( nLoop
+            && pWInfo->nOBSat==1
+            && (pWInfo->wctrlFlags & (WHERE_ORDERBY_MIN|WHERE_ORDERBY_MAX))!=0
+            ){
+        pWInfo->bOrderedInnerLoop = 1;
       }
     }
     if( (pWInfo->wctrlFlags & WHERE_SORTBYGROUP)
@@ -150303,6 +155067,28 @@ static int exprIsDeterministic(Expr *p){
   return w.eCode;
 }
 
+
+#ifdef WHERETRACE_ENABLED
+/*
+** Display all WhereLoops in pWInfo
+*/
+static void showAllWhereLoops(WhereInfo *pWInfo, WhereClause *pWC){
+  if( sqlite3WhereTrace ){    /* Display all of the WhereLoop objects */
+    WhereLoop *p;
+    int i;
+    static const char zLabel[] = "0123456789abcdefghijklmnopqrstuvwyxz"
+                                           "ABCDEFGHIJKLMNOPQRSTUVWYXZ";
+    for(p=pWInfo->pLoops, i=0; p; p=p->pNextLoop, i++){
+      p->cId = zLabel[i%(sizeof(zLabel)-1)];
+      sqlite3WhereLoopPrint(p, pWC);
+    }
+  }
+}
+# define WHERETRACE_ALL_LOOPS(W,C) showAllWhereLoops(W,C)
+#else
+# define WHERETRACE_ALL_LOOPS(W,C)
+#endif
+
 /*
 ** Generate the beginning of the loop used for WHERE clause processing.
 ** The return value is a pointer to an opaque structure that contains
@@ -150596,6 +155382,7 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin(
     }
   }
   if( sqlite3WhereTrace & 0x100 ){ /* Display all terms of the WHERE clause */
+    sqlite3DebugPrintf("---- WHERE clause at start of analysis:\n");
     sqlite3WhereClausePrint(sWLB.pWC);
   }
 #endif
@@ -150604,18 +155391,27 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin(
     rc = whereLoopAddAll(&sWLB);
     if( rc ) goto whereBeginError;
 
-#ifdef WHERETRACE_ENABLED
-    if( sqlite3WhereTrace ){    /* Display all of the WhereLoop objects */
-      WhereLoop *p;
-      int i;
-      static const char zLabel[] = "0123456789abcdefghijklmnopqrstuvwyxz"
-                                             "ABCDEFGHIJKLMNOPQRSTUVWYXZ";
-      for(p=pWInfo->pLoops, i=0; p; p=p->pNextLoop, i++){
-        p->cId = zLabel[i%(sizeof(zLabel)-1)];
-        whereLoopPrint(p, sWLB.pWC);
-      }
-    }
-#endif
+#ifdef SQLITE_ENABLE_STAT4
+    /* If one or more WhereTerm.truthProb values were used in estimating
+    ** loop parameters, but then those truthProb values were subsequently
+    ** changed based on STAT4 information while computing subsequent loops,
+    ** then we need to rerun the whole loop building process so that all
+    ** loops will be built using the revised truthProb values. */
+    if( sWLB.bldFlags2 & SQLITE_BLDF2_2NDPASS ){
+      WHERETRACE_ALL_LOOPS(pWInfo, sWLB.pWC);
+      WHERETRACE(0xffff,
+           ("**** Redo all loop computations due to"
+            " TERM_HIGHTRUTH changes ****\n"));
+      while( pWInfo->pLoops ){
+        WhereLoop *p = pWInfo->pLoops;
+        pWInfo->pLoops = p->pNextLoop;
+        whereLoopDelete(db, p);
+      }
+      rc = whereLoopAddAll(&sWLB);
+      if( rc ) goto whereBeginError;
+    }
+#endif
+    WHERETRACE_ALL_LOOPS(pWInfo, sWLB.pWC);
 
     wherePathSolver(pWInfo, 0);
     if( db->mallocFailed ) goto whereBeginError;
@@ -150652,7 +155448,7 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin(
     }
     sqlite3DebugPrintf("\n");
     for(ii=0; ii<pWInfo->nLevel; ii++){
-      whereLoopPrint(pWInfo->a[ii].pWLoop, sWLB.pWC);
+      sqlite3WhereLoopPrint(pWInfo->a[ii].pWLoop, sWLB.pWC);
     }
   }
 #endif
@@ -150677,14 +155473,14 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin(
   ** then table t2 can be omitted from the following:
   **
   **     SELECT v1, v3 FROM t1
-  **       LEFT JOIN t2 USING (t1.ipk=t2.ipk)
-  **       LEFT JOIN t3 USING (t1.ipk=t3.ipk)
+  **       LEFT JOIN t2 ON (t1.ipk=t2.ipk)
+  **       LEFT JOIN t3 ON (t1.ipk=t3.ipk)
   **
   ** or from:
   **
   **     SELECT DISTINCT v1, v3 FROM t1
   **       LEFT JOIN t2
-  **       LEFT JOIN t3 USING (t1.ipk=t3.ipk)
+  **       LEFT JOIN t3 ON (t1.ipk=t3.ipk)
   */
   notReady = ~(Bitmask)0;
   if( pWInfo->nLevel>=2
@@ -150734,7 +155530,13 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin(
       nTabList--;
     }
   }
+#if defined(WHERETRACE_ENABLED)
+  if( sqlite3WhereTrace & 0x100 ){ /* Display all terms of the WHERE clause */
+    sqlite3DebugPrintf("---- WHERE clause at end of analysis:\n");
+    sqlite3WhereClausePrint(sWLB.pWC);
+  }
   WHERETRACE(0xffff,("*** Optimizer Finished ***\n"));
+#endif
   pWInfo->pParse->nQueryLoop += pWInfo->nRowOut;
 
   /* If the caller is an UPDATE or DELETE statement that is requesting
@@ -150811,7 +155613,13 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin(
       assert( pTabItem->iCursor==pLevel->iTabCur );
       testcase( pWInfo->eOnePass==ONEPASS_OFF && pTab->nCol==BMS-1 );
       testcase( pWInfo->eOnePass==ONEPASS_OFF && pTab->nCol==BMS );
-      if( pWInfo->eOnePass==ONEPASS_OFF && pTab->nCol<BMS && HasRowid(pTab) ){
+      if( pWInfo->eOnePass==ONEPASS_OFF
+       && pTab->nCol<BMS
+       && (pTab->tabFlags & (TF_HasGenerated|TF_WithoutRowid))==0
+      ){
+        /* If we know that only a prefix of the record will be used,
+        ** it is advantageous to reduce the "column count" field in
+        ** the P4 operand of the OP_OpenRead/Write opcode. */
         Bitmask b = pTabItem->colUsed;
         int n = 0;
         for(; b; b=b>>1, n++){}
@@ -150874,7 +155682,7 @@ SQLITE_PRIVATE WhereInfo *sqlite3WhereBegin(
          && (pWInfo->wctrlFlags&WHERE_ORDERBY_MIN)==0
          && pWInfo->eDistinct!=WHERE_DISTINCT_ORDERED
         ){
-          sqlite3VdbeChangeP5(v, OPFLAG_SEEKEQ); /* Hint to COMDB2 */
+          sqlite3VdbeChangeP5(v, OPFLAG_SEEKEQ);
         }
         VdbeComment((v, "%s", pIx->zName));
 #ifdef SQLITE_ENABLE_COLUMN_USED_MASK
@@ -151032,10 +155840,27 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){
         if( pIn->eEndLoopOp!=OP_Noop ){
           if( pIn->nPrefix ){
             assert( pLoop->wsFlags & WHERE_IN_EARLYOUT );
-            sqlite3VdbeAddOp4Int(v, OP_IfNoHope, pLevel->iIdxCur,
-                              sqlite3VdbeCurrentAddr(v)+2,
-                              pIn->iBase, pIn->nPrefix);
-            VdbeCoverage(v);
+            if( pLevel->iLeftJoin ){
+              /* For LEFT JOIN queries, cursor pIn->iCur may not have been
+              ** opened yet. This occurs for WHERE clauses such as
+              ** "a = ? AND b IN (...)", where the index is on (a, b). If
+              ** the RHS of the (a=?) is NULL, then the "b IN (...)" may
+              ** never have been coded, but the body of the loop run to
+              ** return the null-row. So, if the cursor is not open yet,
+              ** jump over the OP_Next or OP_Prev instruction about to
+              ** be coded.  */
+              sqlite3VdbeAddOp2(v, OP_IfNotOpen, pIn->iCur,
+                  sqlite3VdbeCurrentAddr(v) + 2 +
+                     ((pLoop->wsFlags & WHERE_VIRTUALTABLE)==0)
+              );
+              VdbeCoverage(v);
+            }
+            if( (pLoop->wsFlags & WHERE_VIRTUALTABLE)==0 ){
+              sqlite3VdbeAddOp4Int(v, OP_IfNoHope, pLevel->iIdxCur,
+                  sqlite3VdbeCurrentAddr(v)+2,
+                  pIn->iBase, pIn->nPrefix);
+              VdbeCoverage(v);
+            }
           }
           sqlite3VdbeAddOp2(v, pIn->eEndLoopOp, pIn->iCur, pIn->addrInTop);
           VdbeCoverage(v);
@@ -151173,8 +155998,11 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){
             Index *pPk = sqlite3PrimaryKeyIndex(pTab);
             x = pPk->aiColumn[x];
             assert( x>=0 );
+          }else{
+            testcase( x!=sqlite3StorageColumnToTable(pTab,x) );
+            x = sqlite3StorageColumnToTable(pTab,x);
           }
-          x = sqlite3ColumnOfIndex(pIdx, x);
+          x = sqlite3TableColumnToIndex(pIdx, x);
           if( x>=0 ){
             pOp->p2 = x;
             pOp->p1 = pLevel->iIdxCur;
@@ -151197,6 +156025,14 @@ SQLITE_PRIVATE void sqlite3WhereEnd(WhereInfo *pWInfo){
     }
   }
 
+  /* Undo all Expr node modifications */
+  while( pWInfo->pExprMods ){
+    WhereExprMod *p = pWInfo->pExprMods;
+    pWInfo->pExprMods = p->pNext;
+    memcpy(p->pExpr, &p->orig, sizeof(p->orig));
+    sqlite3DbFree(db, p);
+  }
+
   /* Final cleanup
   */
   pParse->nQueryLoop = pWInfo->savedNQueryLoop;
@@ -151991,13 +156827,27 @@ static int selectWindowRewriteExprCb(Walker *pWalker, Expr *pExpr){
           }
         }
       }
-      /* Fall through.  */
+      /* no break */ deliberate_fall_through
 
     case TK_AGG_FUNCTION:
     case TK_COLUMN: {
-      Expr *pDup = sqlite3ExprDup(pParse->db, pExpr, 0);
-      p->pSub = sqlite3ExprListAppend(pParse, p->pSub, pDup);
+      int iCol = -1;
+      if( p->pSub ){
+        int i;
+        for(i=0; i<p->pSub->nExpr; i++){
+          if( 0==sqlite3ExprCompare(0, p->pSub->a[i].pExpr, pExpr, -1) ){
+            iCol = i;
+            break;
+          }
+        }
+      }
+      if( iCol<0 ){
+        Expr *pDup = sqlite3ExprDup(pParse->db, pExpr, 0);
+        if( pDup && pDup->op==TK_AGG_FUNCTION ) pDup->op = TK_FUNCTION;
+        p->pSub = sqlite3ExprListAppend(pParse, p->pSub, pDup);
+      }
       if( p->pSub ){
+        int f = pExpr->flags & EP_Collate;
         assert( ExprHasProperty(pExpr, EP_Static)==0 );
         ExprSetProperty(pExpr, EP_Static);
         sqlite3ExprDelete(pParse->db, pExpr);
@@ -152005,11 +156855,12 @@ static int selectWindowRewriteExprCb(Walker *pWalker, Expr *pExpr){
         memset(pExpr, 0, sizeof(Expr));
 
         pExpr->op = TK_COLUMN;
-        pExpr->iColumn = p->pSub->nExpr-1;
+        pExpr->iColumn = (iCol<0 ? p->pSub->nExpr-1: iCol);
         pExpr->iTable = p->pWin->iEphCsr;
         pExpr->y.pTab = p->pTab;
+        pExpr->flags = f;
       }
-
+      if( pParse->db->mallocFailed ) return WRC_Abort;
       break;
     }
 
@@ -152091,9 +156942,18 @@ static ExprList *exprListAppendList(
     int nInit = pList ? pList->nExpr : 0;
     for(i=0; i<pAppend->nExpr; i++){
       Expr *pDup = sqlite3ExprDup(pParse->db, pAppend->a[i].pExpr, 0);
-      if( bIntToNull && pDup && pDup->op==TK_INTEGER ){
-        pDup->op = TK_NULL;
-        pDup->flags &= ~(EP_IntValue|EP_IsTrue|EP_IsFalse);
+      assert( pDup==0 || !ExprHasProperty(pDup, EP_MemToken) );
+      if( bIntToNull && pDup ){
+        int iDummy;
+        Expr *pSub;
+        for(pSub=pDup; ExprHasProperty(pSub, EP_Skip); pSub=pSub->pLeft){
+          assert( pSub );
+        }
+        if( sqlite3ExprIsInteger(pSub, &iDummy) ){
+          pSub->op = TK_NULL;
+          pSub->flags &= ~(EP_IntValue|EP_IsTrue|EP_IsFalse);
+          pSub->u.zToken = 0;
+        }
       }
       pList = sqlite3ExprListAppend(pParse, pList, pDup);
       if( pList ) pList->a[nInit+i].sortFlags = pAppend->a[i].sortFlags;
@@ -152103,6 +156963,23 @@ static ExprList *exprListAppendList(
 }
 
 /*
+** When rewriting a query, if the new subquery in the FROM clause
+** contains TK_AGG_FUNCTION nodes that refer to an outer query,
+** then we have to increase the Expr->op2 values of those nodes
+** due to the extra subquery layer that was added.
+**
+** See also the incrAggDepth() routine in resolve.c
+*/
+static int sqlite3WindowExtraAggFuncDepth(Walker *pWalker, Expr *pExpr){
+  if( pExpr->op==TK_AGG_FUNCTION
+   && pExpr->op2>=pWalker->walkerDepth
+  ){
+    pExpr->op2++;
+  }
+  return WRC_Continue;
+}
+
+/*
 ** If the SELECT statement passed as the second argument does not invoke
 ** any SQL window functions, this function is a no-op. Otherwise, it
 ** rewrites the SELECT statement so that window function xStep functions
@@ -152111,7 +156988,7 @@ static ExprList *exprListAppendList(
 */
 SQLITE_PRIVATE int sqlite3WindowRewrite(Parse *pParse, Select *p){
   int rc = SQLITE_OK;
-  if( p->pWin && p->pPrior==0 ){
+  if( p->pWin && p->pPrior==0 && (p->selFlags & SF_WinRewrite)==0 ){
     Vdbe *v = sqlite3GetVdbe(pParse);
     sqlite3 *db = pParse->db;
     Select *pSub = 0;             /* The subquery */
@@ -152122,25 +156999,31 @@ SQLITE_PRIVATE int sqlite3WindowRewrite(Parse *pParse, Select *p){
     ExprList *pSort = 0;
 
     ExprList *pSublist = 0;       /* Expression list for sub-query */
-    Window *pMWin = p->pWin;      /* Master window object */
+    Window *pMWin = p->pWin;      /* Main window object */
     Window *pWin;                 /* Window object iterator */
     Table *pTab;
+    Walker w;
+
+    u32 selFlags = p->selFlags;
 
     pTab = sqlite3DbMallocZero(db, sizeof(Table));
     if( pTab==0 ){
-      return SQLITE_NOMEM;
+      return sqlite3ErrorToParser(db, SQLITE_NOMEM);
     }
+    sqlite3AggInfoPersistWalkerInit(&w, pParse);
+    sqlite3WalkSelect(&w, p);
 
     p->pSrc = 0;
     p->pWhere = 0;
     p->pGroupBy = 0;
     p->pHaving = 0;
     p->selFlags &= ~SF_Aggregate;
+    p->selFlags |= SF_WinRewrite;
 
     /* Create the ORDER BY clause for the sub-select. This is the concatenation
     ** of the window PARTITION and ORDER BY clauses. Then, if this makes it
     ** redundant, remove the ORDER BY from the parent SELECT.  */
-    pSort = sqlite3ExprListDup(db, pMWin->pPartition, 0);
+    pSort = exprListAppendList(pParse, 0, pMWin->pPartition, 1);
     pSort = exprListAppendList(pParse, pSort, pMWin->pOrderBy, 1);
     if( pSort && p->pOrderBy && p->pOrderBy->nExpr<=pSort->nExpr ){
       int nSave = pSort->nExpr;
@@ -152206,6 +157089,9 @@ SQLITE_PRIVATE int sqlite3WindowRewrite(Parse *pParse, Select *p){
     pSub = sqlite3SelectNew(
         pParse, pSublist, pSrc, pWhere, pGroupBy, pHaving, pSort, 0, 0
     );
+    SELECTTRACE(1,pParse,pSub,
+       ("New window-function subquery in FROM clause of (%u/%p)\n",
+       p->selId, p));
     p->pSrc = sqlite3SrcListAppend(pParse, 0, 0, 0);
     if( p->pSrc ){
       Table *pTab2;
@@ -152213,18 +157099,23 @@ SQLITE_PRIVATE int sqlite3WindowRewrite(Parse *pParse, Select *p){
       sqlite3SrcListAssignCursors(pParse, p->pSrc);
       pSub->selFlags |= SF_Expanded;
       pTab2 = sqlite3ResultSetOfSelect(pParse, pSub, SQLITE_AFF_NONE);
+      pSub->selFlags |= (selFlags & SF_Aggregate);
       if( pTab2==0 ){
+        /* Might actually be some other kind of error, but in that case
+        ** pParse->nErr will be set, so if SQLITE_NOMEM is set, we will get
+        ** the correct error message regardless. */
         rc = SQLITE_NOMEM;
       }else{
         memcpy(pTab, pTab2, sizeof(Table));
         pTab->tabFlags |= TF_Ephemeral;
         p->pSrc->a[0].pTab = pTab;
         pTab = pTab2;
+        memset(&w, 0, sizeof(w));
+        w.xExprCallback = sqlite3WindowExtraAggFuncDepth;
+        w.xSelectCallback = sqlite3WalkerDepthIncrease;
+        w.xSelectCallback2 = sqlite3WalkerDepthDecrease;
+        sqlite3WalkSelect(&w, pSub);
       }
-      sqlite3VdbeAddOp2(v, OP_OpenEphemeral, pMWin->iEphCsr, pSublist->nExpr);
-      sqlite3VdbeAddOp2(v, OP_OpenDup, pMWin->iEphCsr+1, pMWin->iEphCsr);
-      sqlite3VdbeAddOp2(v, OP_OpenDup, pMWin->iEphCsr+2, pMWin->iEphCsr);
-      sqlite3VdbeAddOp2(v, OP_OpenDup, pMWin->iEphCsr+3, pMWin->iEphCsr);
     }else{
       sqlite3SelectDelete(db, pSub);
     }
@@ -152232,6 +157123,12 @@ SQLITE_PRIVATE int sqlite3WindowRewrite(Parse *pParse, Select *p){
     sqlite3DbFree(db, pTab);
   }
 
+  if( rc ){
+    if( pParse->nErr==0 ){
+      assert( pParse->db->mallocFailed );
+      sqlite3ErrorToParser(pParse->db, SQLITE_NOMEM);
+    }
+  }
   return rc;
 }
 
@@ -152451,8 +157348,8 @@ SQLITE_PRIVATE void sqlite3WindowAttach(Parse *pParse, Expr *p, Window *pWin){
 ** SELECT, or (b) the windows already linked use a compatible window frame.
 */
 SQLITE_PRIVATE void sqlite3WindowLink(Select *pSel, Window *pWin){
-  if( 0==pSel->pWin
-   || 0==sqlite3WindowCompare(0, pSel->pWin, pWin, 0)
+  if( pSel!=0
+   && (0==pSel->pWin || 0==sqlite3WindowCompare(0, pSel->pWin, pWin, 0))
   ){
     pWin->pNextWin = pSel->pWin;
     if( pSel->pWin ){
@@ -152464,20 +157361,29 @@ SQLITE_PRIVATE void sqlite3WindowLink(Select *pSel, Window *pWin){
 }
 
 /*
-** Return 0 if the two window objects are identical, or non-zero otherwise.
-** Identical window objects can be processed in a single scan.
+** Return 0 if the two window objects are identical, 1 if they are
+** different, or 2 if it cannot be determined if the objects are identical
+** or not. Identical window objects can be processed in a single scan.
 */
 SQLITE_PRIVATE int sqlite3WindowCompare(Parse *pParse, Window *p1, Window *p2, int bFilter){
+  int res;
+  if( NEVER(p1==0) || NEVER(p2==0) ) return 1;
   if( p1->eFrmType!=p2->eFrmType ) return 1;
   if( p1->eStart!=p2->eStart ) return 1;
   if( p1->eEnd!=p2->eEnd ) return 1;
   if( p1->eExclude!=p2->eExclude ) return 1;
   if( sqlite3ExprCompare(pParse, p1->pStart, p2->pStart, -1) ) return 1;
   if( sqlite3ExprCompare(pParse, p1->pEnd, p2->pEnd, -1) ) return 1;
-  if( sqlite3ExprListCompare(p1->pPartition, p2->pPartition, -1) ) return 1;
-  if( sqlite3ExprListCompare(p1->pOrderBy, p2->pOrderBy, -1) ) return 1;
+  if( (res = sqlite3ExprListCompare(p1->pPartition, p2->pPartition, -1)) ){
+    return res;
+  }
+  if( (res = sqlite3ExprListCompare(p1->pOrderBy, p2->pOrderBy, -1)) ){
+    return res;
+  }
   if( bFilter ){
-    if( sqlite3ExprCompare(pParse, p1->pFilter, p2->pFilter, -1) ) return 1;
+    if( (res = sqlite3ExprCompare(pParse, p1->pFilter, p2->pFilter, -1)) ){
+      return res;
+    }
   }
   return 0;
 }
@@ -152488,10 +157394,17 @@ SQLITE_PRIVATE int sqlite3WindowCompare(Parse *pParse, Window *p1, Window *p2, i
 ** to begin iterating through the sub-query results. It is used to allocate
 ** and initialize registers and cursors used by sqlite3WindowCodeStep().
 */
-SQLITE_PRIVATE void sqlite3WindowCodeInit(Parse *pParse, Window *pMWin){
+SQLITE_PRIVATE void sqlite3WindowCodeInit(Parse *pParse, Select *pSelect){
+  int nEphExpr = pSelect->pSrc->a[0].pSelect->pEList->nExpr;
+  Window *pMWin = pSelect->pWin;
   Window *pWin;
   Vdbe *v = sqlite3GetVdbe(pParse);
 
+  sqlite3VdbeAddOp2(v, OP_OpenEphemeral, pMWin->iEphCsr, nEphExpr);
+  sqlite3VdbeAddOp2(v, OP_OpenDup, pMWin->iEphCsr+1, pMWin->iEphCsr);
+  sqlite3VdbeAddOp2(v, OP_OpenDup, pMWin->iEphCsr+2, pMWin->iEphCsr);
+  sqlite3VdbeAddOp2(v, OP_OpenDup, pMWin->iEphCsr+3, pMWin->iEphCsr);
+
   /* Allocate registers to use for PARTITION BY values, if any. Initialize
   ** said registers to NULL.  */
   if( pMWin->pPartition ){
@@ -152757,7 +157670,7 @@ static void windowAggStep(
 
     /* All OVER clauses in the same window function aggregate step must
     ** be the same. */
-    assert( pWin==pMWin || sqlite3WindowCompare(pParse,pWin,pMWin,0)==0 );
+    assert( pWin==pMWin || sqlite3WindowCompare(pParse,pWin,pMWin,0)!=1 );
 
     for(i=0; i<nArg; i++){
       if( i!=1 || pFunc->zName!=nth_valueName ){
@@ -153079,6 +157992,7 @@ static int windowInitAccum(Parse *pParse, Window *pMWin){
   Window *pWin;
   for(pWin=pMWin; pWin; pWin=pWin->pNextWin){
     FuncDef *pFunc = pWin->pFunc;
+    assert( pWin->regAccum );
     sqlite3VdbeAddOp2(v, OP_Null, 0, pWin->regAccum);
     nArg = MAX(nArg, windowArgCount(pWin));
     if( pMWin->regStartRowid==0 ){
@@ -153457,6 +158371,10 @@ SQLITE_PRIVATE Window *sqlite3WindowDup(sqlite3 *db, Expr *pOwner, Window *p){
       pNew->eStart = p->eStart;
       pNew->eExclude = p->eExclude;
       pNew->regResult = p->regResult;
+      pNew->regAccum = p->regAccum;
+      pNew->iArgCol = p->iArgCol;
+      pNew->iEphCsr = p->iEphCsr;
+      pNew->bExprArgs = p->bExprArgs;
       pNew->pStart = sqlite3ExprDup(db, p->pStart, 0);
       pNew->pEnd = sqlite3ExprDup(db, p->pEnd, 0);
       pNew->pOwner = pOwner;
@@ -154253,10 +159171,32 @@ struct FrameBound     { int eType; Expr *pExpr; };
 ** shared across database connections.
 */
 static void disableLookaside(Parse *pParse){
+  sqlite3 *db = pParse->db;
   pParse->disableLookaside++;
-  pParse->db->lookaside.bDisable++;
+  DisableLookaside;
 }
 
+#if !defined(SQLITE_ENABLE_UPDATE_DELETE_LIMIT) \
+ && defined(SQLITE_UDL_CAPABLE_PARSER)
+/*
+** Issue an error message if an ORDER BY or LIMIT clause occurs on an
+** UPDATE or DELETE statement.
+*/
+static void updateDeleteLimitError(
+  Parse *pParse,
+  ExprList *pOrderBy,
+  Expr *pLimit
+){
+  if( pOrderBy ){
+    sqlite3ErrorMsg(pParse, "syntax error near \"ORDER BY\"");
+  }else{
+    sqlite3ErrorMsg(pParse, "syntax error near \"LIMIT\"");
+  }
+  sqlite3ExprListDelete(pParse->db, pOrderBy);
+  sqlite3ExprDelete(pParse->db, pLimit);
+}
+#endif /* SQLITE_ENABLE_UPDATE_DELETE_LIMIT */
+
 
   /*
   ** For a compound SELECT statement, make sure p->pPrior->pNext==p for
@@ -154293,6 +159233,7 @@ static void disableLookaside(Parse *pParse){
       p->op = (u8)op;
       p->affExpr = 0;
       p->flags = EP_Leaf;
+      ExprClearVVAProperties(p);
       p->iAgg = -1;
       p->pLeft = p->pRight = 0;
       p->x.pList = 0;
@@ -154418,28 +159359,28 @@ static void disableLookaside(Parse *pParse){
 #endif
 /************* Begin control #defines *****************************************/
 #define YYCODETYPE unsigned short int
-#define YYNOCODE 307
+#define YYNOCODE 310
 #define YYACTIONTYPE unsigned short int
-#define YYWILDCARD 98
+#define YYWILDCARD 100
 #define sqlite3ParserTOKENTYPE Token
 typedef union {
   int yyinit;
   sqlite3ParserTOKENTYPE yy0;
-  const char* yy8;
-  Select* yy25;
-  int yy32;
-  Expr* yy46;
-  struct FrameBound yy57;
-  u8 yy118;
-  ExprList* yy138;
-  Upsert* yy288;
-  With* yy297;
-  IdList* yy406;
-  Window* yy455;
-  struct {int value; int mask;} yy495;
-  TriggerStep* yy527;
-  struct TrigEvent yy572;
-  SrcList* yy609;
+  SrcList* yy47;
+  u8 yy58;
+  struct FrameBound yy77;
+  With* yy131;
+  int yy192;
+  Expr* yy202;
+  struct {int value; int mask;} yy207;
+  struct TrigEvent yy230;
+  ExprList* yy242;
+  Window* yy303;
+  Upsert* yy318;
+  const char* yy436;
+  TriggerStep* yy447;
+  Select* yy539;
+  IdList* yy600;
 } YYMINORTYPE;
 #ifndef YYSTACKDEPTH
 #define YYSTACKDEPTH 100
@@ -154455,17 +159396,18 @@ typedef union {
 #define sqlite3ParserCTX_FETCH Parse *pParse=yypParser->pParse;
 #define sqlite3ParserCTX_STORE yypParser->pParse=pParse;
 #define YYFALLBACK 1
-#define YYNSTATE             543
-#define YYNRULE              381
-#define YYNTOKEN             179
-#define YY_MAX_SHIFT         542
-#define YY_MIN_SHIFTREDUCE   790
-#define YY_MAX_SHIFTREDUCE   1170
-#define YY_ERROR_ACTION      1171
-#define YY_ACCEPT_ACTION     1172
-#define YY_NO_ACTION         1173
-#define YY_MIN_REDUCE        1174
-#define YY_MAX_REDUCE        1554
+#define YYNSTATE             553
+#define YYNRULE              385
+#define YYNRULE_WITH_ACTION  325
+#define YYNTOKEN             181
+#define YY_MAX_SHIFT         552
+#define YY_MIN_SHIFTREDUCE   803
+#define YY_MAX_SHIFTREDUCE   1187
+#define YY_ERROR_ACTION      1188
+#define YY_ACCEPT_ACTION     1189
+#define YY_NO_ACTION         1190
+#define YY_MIN_REDUCE        1191
+#define YY_MAX_REDUCE        1575
 /************* End control #defines *******************************************/
 #define YY_NLOOKAHEAD ((int)(sizeof(yy_lookahead)/sizeof(yy_lookahead[0])))
 
@@ -154532,573 +159474,586 @@ typedef union {
 **  yy_default[]       Default action for each state.
 **
 *********** Begin parsing tables **********************************************/
-#define YY_ACTTAB_COUNT (1913)
+#define YY_ACTTAB_COUNT (1962)
 static const YYACTIONTYPE yy_action[] = {
- /*     0 */   537,  339,  537, 1241, 1220,  537,   12,  537,  112,  109,
- /*    10 */   209,  537, 1241,  537, 1205,  462,  112,  109,  209,  386,
- /*    20 */   338,  462,   42,   42,   42,   42,  445,   42,   42,   70,
- /*    30 */    70,  922, 1208,   70,   70,   70,   70, 1443,  403,  923,
- /*    40 */   531,  531,  531,  119,  120,  110, 1148, 1148,  991,  994,
- /*    50 */   984,  984,  117,  117,  118,  118,  118,  118,  425,  386,
- /*    60 */  1498,  542,    2, 1176, 1442,  519,  141, 1518,  289,  519,
- /*    70 */   134,  519,   95,  259,  495, 1215,  189, 1254,  518,  494,
- /*    80 */   484,  437,  296,  119,  120,  110, 1148, 1148,  991,  994,
- /*    90 */   984,  984,  117,  117,  118,  118,  118,  118,  270,  116,
- /*   100 */   116,  116,  116,  115,  115,  114,  114,  114,  113,  418,
- /*   110 */   264,  264,  264,  264,  423, 1479,  352, 1481,  123,  351,
- /*   120 */  1479,  508, 1094,  534, 1034,  534, 1099,  386, 1099,  239,
- /*   130 */   206,  112,  109,  209,   96, 1094,  376,  219, 1094,  116,
- /*   140 */   116,  116,  116,  115,  115,  114,  114,  114,  113,  418,
- /*   150 */   480,  119,  120,  110, 1148, 1148,  991,  994,  984,  984,
- /*   160 */   117,  117,  118,  118,  118,  118,  353,  422, 1407,  264,
- /*   170 */   264,  114,  114,  114,  113,  418,  883,  121,  416,  416,
- /*   180 */   416,  882,  534,  116,  116,  116,  116,  115,  115,  114,
- /*   190 */   114,  114,  113,  418,  212,  415,  414,  386,  443,  383,
- /*   200 */   382,  118,  118,  118,  118,  111,  177,  116,  116,  116,
- /*   210 */   116,  115,  115,  114,  114,  114,  113,  418,  112,  109,
- /*   220 */   209,  119,  120,  110, 1148, 1148,  991,  994,  984,  984,
- /*   230 */   117,  117,  118,  118,  118,  118,  386,  438,  312, 1163,
- /*   240 */  1155,   80, 1155, 1127,  514,   79,  116,  116,  116,  116,
- /*   250 */   115,  115,  114,  114,  114,  113,  418,  514,  428,  418,
- /*   260 */   119,  120,  110, 1148, 1148,  991,  994,  984,  984,  117,
- /*   270 */   117,  118,  118,  118,  118,  428,  427,  116,  116,  116,
- /*   280 */   116,  115,  115,  114,  114,  114,  113,  418,  115,  115,
- /*   290 */   114,  114,  114,  113,  418, 1127, 1127, 1128, 1129, 1094,
- /*   300 */   258,  258,  192,  386,  408,  371, 1168,  326,  118,  118,
- /*   310 */   118,  118, 1094,  534,  374, 1094,  116,  116,  116,  116,
- /*   320 */   115,  115,  114,  114,  114,  113,  418,  119,  120,  110,
- /*   330 */  1148, 1148,  991,  994,  984,  984,  117,  117,  118,  118,
- /*   340 */   118,  118,  386,  354,  445,  428,  829,  238, 1127, 1128,
- /*   350 */  1129,  515, 1466,  116,  116,  116,  116,  115,  115,  114,
- /*   360 */   114,  114,  113,  418, 1127, 1467,  119,  120,  110, 1148,
- /*   370 */  1148,  991,  994,  984,  984,  117,  117,  118,  118,  118,
- /*   380 */   118, 1169,   82,  116,  116,  116,  116,  115,  115,  114,
- /*   390 */   114,  114,  113,  418,  405,  112,  109,  209,  161,  445,
- /*   400 */   250,  267,  336,  478,  331,  477,  236,  951, 1127,  386,
- /*   410 */   888, 1521,  329,  822,  852,  162,  274, 1127, 1128, 1129,
- /*   420 */   338,  169,  116,  116,  116,  116,  115,  115,  114,  114,
- /*   430 */   114,  113,  418,  119,  120,  110, 1148, 1148,  991,  994,
- /*   440 */   984,  984,  117,  117,  118,  118,  118,  118,  386,  438,
- /*   450 */   312, 1502, 1112, 1176,  161,  288,  528,  311,  289,  883,
- /*   460 */   134, 1127, 1128, 1129,  882,  537,  143, 1254,  288,  528,
- /*   470 */   297,  275,  119,  120,  110, 1148, 1148,  991,  994,  984,
- /*   480 */   984,  117,  117,  118,  118,  118,  118,   70,   70,  116,
- /*   490 */   116,  116,  116,  115,  115,  114,  114,  114,  113,  418,
- /*   500 */   264,  264,   12,  264,  264,  395, 1127,  483, 1473, 1094,
- /*   510 */   204,  482,    6,  534, 1258,  386,  534, 1474,  825,  972,
- /*   520 */   504,    6, 1094,  500,   95, 1094,  534,  219,  116,  116,
- /*   530 */   116,  116,  115,  115,  114,  114,  114,  113,  418,  119,
- /*   540 */   120,  110, 1148, 1148,  991,  994,  984,  984,  117,  117,
- /*   550 */   118,  118,  118,  118,  386, 1339,  971,  422,  956, 1127,
- /*   560 */  1128, 1129,  231,  512, 1473,  475,  472,  471,    6,  113,
- /*   570 */   418,  825,  962,  298,  503,  470,  961,  452,  119,  120,
- /*   580 */   110, 1148, 1148,  991,  994,  984,  984,  117,  117,  118,
- /*   590 */   118,  118,  118,  395,  537,  116,  116,  116,  116,  115,
- /*   600 */   115,  114,  114,  114,  113,  418,  202,  961,  961,  963,
- /*   610 */   231,  971, 1127,  475,  472,  471,   13,   13,  951, 1127,
- /*   620 */   834,  386, 1207,  470,  399,  183,  447,  962,  462,  162,
- /*   630 */   397,  961, 1246, 1246,  116,  116,  116,  116,  115,  115,
- /*   640 */   114,  114,  114,  113,  418,  119,  120,  110, 1148, 1148,
- /*   650 */   991,  994,  984,  984,  117,  117,  118,  118,  118,  118,
- /*   660 */   386,  271,  961,  961,  963, 1127, 1128, 1129,  311,  433,
- /*   670 */   299, 1406, 1127, 1128, 1129,  178, 1471,  138,  162,   32,
- /*   680 */     6, 1127,  288,  528,  119,  120,  110, 1148, 1148,  991,
- /*   690 */   994,  984,  984,  117,  117,  118,  118,  118,  118,  909,
- /*   700 */   390,  116,  116,  116,  116,  115,  115,  114,  114,  114,
- /*   710 */   113,  418, 1127,  429,  817,  537, 1127,  265,  265,  981,
- /*   720 */   981,  992,  995,  324, 1055,   93,  520,    5,  338,  537,
- /*   730 */   534,  288,  528, 1522, 1127, 1128, 1129,   70,   70, 1056,
- /*   740 */   116,  116,  116,  116,  115,  115,  114,  114,  114,  113,
- /*   750 */   418,   70,   70, 1495, 1057,  537,   98, 1244, 1244,  264,
- /*   760 */   264,  908,  371, 1076, 1127, 1127, 1128, 1129,  817, 1127,
- /*   770 */  1128, 1129,  534,  519,  140,  863,  386,   13,   13,  456,
- /*   780 */   192,  193,  521,  453,  319,  864,  322,  284,  365,  430,
- /*   790 */   985,  402,  379, 1077, 1548,  101,  386, 1548,    3,  395,
- /*   800 */   119,  120,  110, 1148, 1148,  991,  994,  984,  984,  117,
- /*   810 */   117,  118,  118,  118,  118,  386,  451, 1127, 1128, 1129,
- /*   820 */   119,  120,  110, 1148, 1148,  991,  994,  984,  984,  117,
- /*   830 */   117,  118,  118,  118,  118, 1127, 1354, 1412, 1169,  119,
- /*   840 */   108,  110, 1148, 1148,  991,  994,  984,  984,  117,  117,
- /*   850 */   118,  118,  118,  118, 1412, 1414,  116,  116,  116,  116,
- /*   860 */   115,  115,  114,  114,  114,  113,  418,  272,  535, 1075,
- /*   870 */   877,  877,  337, 1492,  309,  462,  116,  116,  116,  116,
- /*   880 */   115,  115,  114,  114,  114,  113,  418,  537, 1127, 1128,
- /*   890 */  1129,  537,  360,  537,  356,  116,  116,  116,  116,  115,
- /*   900 */   115,  114,  114,  114,  113,  418,  386,  264,  264,   13,
- /*   910 */    13,  273, 1127,   13,   13,   13,   13,  304, 1253,  386,
- /*   920 */   534, 1077, 1549,  404, 1412, 1549,  496,  277,  451,  186,
- /*   930 */  1252,  120,  110, 1148, 1148,  991,  994,  984,  984,  117,
- /*   940 */   117,  118,  118,  118,  118,  110, 1148, 1148,  991,  994,
- /*   950 */   984,  984,  117,  117,  118,  118,  118,  118,  105,  529,
- /*   960 */   537,    4, 1339,  264,  264, 1127, 1128, 1129, 1039, 1039,
- /*   970 */   459,  795,  796,  797,  536,  532,  534,  242,  301,  807,
- /*   980 */   303,  462,   69,   69,  451, 1353,  116,  116,  116,  116,
- /*   990 */   115,  115,  114,  114,  114,  113,  418, 1075,  419,  116,
- /*  1000 */   116,  116,  116,  115,  115,  114,  114,  114,  113,  418,
- /*  1010 */   526,  537, 1146,  192,  350,  105,  529,  537,    4,  497,
- /*  1020 */   162,  337, 1492,  310, 1249,  385, 1550,  372,    9,  462,
- /*  1030 */   242,  400,  532,   13,   13,  499,  971,  843,  436,   70,
- /*  1040 */    70,  359,  103,  103,    8,  339,  278,  187,  278,  104,
- /*  1050 */  1127,  419,  539,  538, 1339,  419,  961,  302, 1339, 1172,
- /*  1060 */     1,    1,  542,    2, 1176, 1146, 1146,  526,  476,  289,
- /*  1070 */    30,  134,  317,  288,  528,  285,  844, 1014, 1254,  276,
- /*  1080 */  1472,  506,  410, 1194,    6,  207,  505,  961,  961,  963,
- /*  1090 */   964,   27,  449,  971,  415,  414,  234,  233,  232,  103,
- /*  1100 */   103,   31, 1152, 1127, 1128, 1129,  104, 1154,  419,  539,
- /*  1110 */   538,  264,  264,  961, 1399, 1153,  264,  264, 1470, 1146,
- /*  1120 */   537,  216,    6,  401,  534, 1197,  392,  458,  406,  534,
- /*  1130 */   537,  485,  358,  537,  261,  537, 1339,  907,  219, 1155,
- /*  1140 */   467, 1155,   50,   50,  961,  961,  963,  964,   27, 1497,
- /*  1150 */  1116,  421,   70,   70,  268,   70,   70,   13,   13,  369,
- /*  1160 */   369,  368,  253,  366,  264,  264,  804,  235,  422,  105,
- /*  1170 */   529,  516,    4,  287,  487,  510,  493,  534,  486,  213,
- /*  1180 */  1055,  294,  490,  384, 1127,  450,  532,  338,  413,  293,
- /*  1190 */   522,  417,  335, 1036,  509, 1056,  107, 1036,   16,   16,
- /*  1200 */  1469, 1094,  334, 1105,    6,  411, 1145,  264,  264,  419,
- /*  1210 */  1057,  102,  511,  100, 1094,  264,  264, 1094,  922,  215,
- /*  1220 */   534,  526,  907,  264,  264,  208,  923,  154,  534,  457,
- /*  1230 */   156,  525,  391,  142,  218,  506,  534, 1127, 1128, 1129,
- /*  1240 */   507,  139, 1131,   38,  214,  530,  392,  971,  329, 1454,
- /*  1250 */   907, 1105,  537,  103,  103,  105,  529,  537,    4,  537,
- /*  1260 */   104,  424,  419,  539,  538,  537,  502,  961,  517,  537,
- /*  1270 */  1072,  537,  532,  373,   54,   54,  288,  528,  387,   55,
- /*  1280 */    55,   15,   15,  288,  528,   17,  136,   44,   44, 1451,
- /*  1290 */   537,   56,   56,   57,   57,  419, 1131,  291,  961,  961,
- /*  1300 */   963,  964,   27,  393,  163,  537,  426,  526,  263,  206,
- /*  1310 */   208,  517,   58,   58,  235,  440,  842,  841,  197,  105,
- /*  1320 */   529,  506,    4, 1033,  439, 1033,  505,   59,   59,  308,
- /*  1330 */   849,  850,   95,  971,  537,  907,  532,  948,  832,  103,
- /*  1340 */   103,  105,  529,  537,    4, 1021,  104,  537,  419,  539,
- /*  1350 */   538, 1116,  421,  961,  537,  268,   60,   60,  532,  419,
- /*  1360 */   369,  369,  368,  253,  366,   61,   61,  804,  965,   45,
- /*  1370 */    45,  526,  537, 1032, 1277, 1032,   46,   46,  537,  391,
- /*  1380 */   213,  419,  294,  266,  961,  961,  963,  964,   27,  292,
- /*  1390 */   293,  295,  832,  526,   48,   48, 1290,  971, 1289, 1021,
- /*  1400 */    49,   49,  432,  103,  103,  887,  953,  537, 1457,  241,
- /*  1410 */   104,  305,  419,  539,  538,  925,  926,  961,  444,  971,
- /*  1420 */   215,  241,  965, 1224,  537,  103,  103, 1431,  154,   62,
- /*  1430 */    62,  156,  104, 1430,  419,  539,  538,   97,  529,  961,
- /*  1440 */     4,  537,  454,  537,  314,  214,   63,   63,  961,  961,
- /*  1450 */   963,  964,   27,  537,  532,  446, 1286,  318,  241,  537,
- /*  1460 */   321,  323,  325,   64,   64,   14,   14, 1237,  537, 1223,
- /*  1470 */   961,  961,  963,  964,   27,   65,   65,  419,  537,  387,
- /*  1480 */   537,  125,  125,  537,  288,  528,  537, 1486,  537,  526,
- /*  1490 */    66,   66,  313,  524,  537,   95,  468, 1221, 1511,  237,
- /*  1500 */    51,   51,   67,   67,  330,   68,   68,  426,   52,   52,
- /*  1510 */   149,  149, 1222,  340,  341,  971,  150,  150, 1298,  463,
- /*  1520 */   327,  103,  103,   95,  537, 1338, 1273,  537,  104,  537,
- /*  1530 */   419,  539,  538, 1284,  537,  961,  268,  283,  523, 1344,
- /*  1540 */  1204,  369,  369,  368,  253,  366,   75,   75,  804,   53,
- /*  1550 */    53,   71,   71,  537, 1196,  537,  126,  126,  537, 1017,
- /*  1560 */   537,  213,  237,  294,  537, 1185,  961,  961,  963,  964,
- /*  1570 */    27,  293,  537, 1184,  537,   72,   72,  127,  127, 1186,
- /*  1580 */   128,  128,  124,  124, 1505,  537,  148,  148,  537,  256,
- /*  1590 */   195,  537, 1270,  537,  147,  147,  132,  132,  537,   11,
- /*  1600 */   537,  215,  537,  199,  343,  345,  347,  131,  131,  154,
- /*  1610 */   129,  129,  156,  130,  130,   74,   74,  537,  370, 1323,
- /*  1620 */    76,   76,   73,   73,   43,   43,  214,  431,  211, 1331,
- /*  1630 */   300,  916,  880,  815,  241,  107,  137,  307,  881,   47,
- /*  1640 */    47,  107,  473,  378,  203,  448,  333, 1403, 1220, 1402,
- /*  1650 */   349,  190,  527,  191,  363,  198, 1508, 1163,  245,  165,
- /*  1660 */   387, 1450, 1448, 1160,   78,  288,  528, 1408,   81,  394,
- /*  1670 */    82,  442,  175,  159,  167,   93, 1328,   35, 1320,  434,
- /*  1680 */   170,  171,  172,  173,  435,  466,  221,  375,  426,  377,
- /*  1690 */  1334,  179,  455,  441, 1397,  225,   87,   36,  461, 1419,
- /*  1700 */   316,  257,  227,  184,  320,  464,  228,  479, 1187,  229,
- /*  1710 */   380, 1240, 1239,  407, 1238, 1212,  834,  332, 1231,  381,
- /*  1720 */   409, 1211,  204, 1210, 1491,  498, 1520, 1281,   92,  281,
- /*  1730 */  1230,  489,  282,  492,  342,  243, 1282,  344,  244, 1280,
- /*  1740 */   346,  412, 1279, 1477,  348,  122, 1476,  517,   10,  357,
- /*  1750 */   286, 1305, 1304,   99, 1383,   94,  501,  251, 1193,   34,
- /*  1760 */  1263,  355,  540,  194, 1262,  361,  362, 1122,  252,  254,
- /*  1770 */   255,  388,  541, 1182, 1177,  151, 1435,  389, 1436, 1434,
- /*  1780 */  1433,  791,  152,  135,  279,  200,  201,  420,  196,   77,
- /*  1790 */   153,  290,  269,  210, 1031,  133, 1029,  945,  166,  155,
- /*  1800 */   217,  168,  866,  306,  220, 1045,  174,  949,  157,  396,
- /*  1810 */    83,  398,  176,   84,   85,  164,   86,  158, 1048,  222,
- /*  1820 */   223, 1044,  144,   18,  224,  315, 1037,  180,  241,  460,
- /*  1830 */  1157,  226,  181,   37,  806,  465,  334,  230,  328,  469,
- /*  1840 */   182,   88,  474,   19,   20,  160,   89,  280,  145,   90,
- /*  1850 */   481,  845, 1110,  146,  997,  205, 1080,   39,   91,   40,
- /*  1860 */   488, 1081,  915,  491,  260,  262,  185,  910,  240,  107,
- /*  1870 */  1100, 1096, 1098, 1104,   21, 1084,   33,  513,  247,   22,
- /*  1880 */    23,   24, 1103,   25,  188,   95, 1012,  998,  996,   26,
- /*  1890 */  1000, 1054,    7, 1053, 1001,  246,   28,   41,  533,  966,
- /*  1900 */   816,  106,   29,  367,  248,  249, 1513, 1512,  364, 1117,
- /*  1910 */  1173, 1173,  876,
+ /*     0 */   546, 1222,  546,  451, 1260,  546, 1239,  546,  114,  111,
+ /*    10 */   211,  546, 1537,  546, 1260,  523,  114,  111,  211,  392,
+ /*    20 */  1232,  344,   42,   42,   42,   42, 1225,   42,   42,   71,
+ /*    30 */    71,  937, 1224,   71,   71,   71,   71, 1462, 1493,  938,
+ /*    40 */   820,  453,    6,  121,  122,  112, 1165, 1165, 1006, 1009,
+ /*    50 */   999,  999,  119,  119,  120,  120,  120,  120, 1543,  392,
+ /*    60 */  1358, 1517,  552,    2, 1193,  194,  528,  436,  143,  291,
+ /*    70 */   528,  136,  528,  371,  261,  504,  272,  385, 1273,  527,
+ /*    80 */   503,  493,  164,  121,  122,  112, 1165, 1165, 1006, 1009,
+ /*    90 */   999,  999,  119,  119,  120,  120,  120,  120, 1358,  442,
+ /*   100 */  1514,  118,  118,  118,  118,  117,  117,  116,  116,  116,
+ /*   110 */   115,  424,  266,  266,  266,  266, 1498,  358, 1500,  435,
+ /*   120 */   357, 1498,  517,  524, 1485,  543, 1114,  543, 1114,  392,
+ /*   130 */   405,  241,  208,  114,  111,  211,   98,  290,  537,  221,
+ /*   140 */  1029,  118,  118,  118,  118,  117,  117,  116,  116,  116,
+ /*   150 */   115,  424, 1142,  121,  122,  112, 1165, 1165, 1006, 1009,
+ /*   160 */   999,  999,  119,  119,  120,  120,  120,  120,  406,  428,
+ /*   170 */   117,  117,  116,  116,  116,  115,  424, 1418,  468,  123,
+ /*   180 */   118,  118,  118,  118,  117,  117,  116,  116,  116,  115,
+ /*   190 */   424,  116,  116,  116,  115,  424,  540,  540,  540,  392,
+ /*   200 */   505,  120,  120,  120,  120,  113, 1051, 1142, 1143, 1144,
+ /*   210 */  1051,  118,  118,  118,  118,  117,  117,  116,  116,  116,
+ /*   220 */   115,  424, 1461,  121,  122,  112, 1165, 1165, 1006, 1009,
+ /*   230 */   999,  999,  119,  119,  120,  120,  120,  120,  392,  444,
+ /*   240 */   316,   83,  463,   81,  359,  382, 1142,   80,  118,  118,
+ /*   250 */   118,  118,  117,  117,  116,  116,  116,  115,  424,  179,
+ /*   260 */   434,  424,  121,  122,  112, 1165, 1165, 1006, 1009,  999,
+ /*   270 */   999,  119,  119,  120,  120,  120,  120,  434,  433,  266,
+ /*   280 */   266,  118,  118,  118,  118,  117,  117,  116,  116,  116,
+ /*   290 */   115,  424,  543, 1109,  903,  506, 1142,  114,  111,  211,
+ /*   300 */  1431, 1142, 1143, 1144,  206,  491, 1109,  392,  449, 1109,
+ /*   310 */   545,  330,  120,  120,  120,  120,  298, 1431, 1433,   17,
+ /*   320 */   118,  118,  118,  118,  117,  117,  116,  116,  116,  115,
+ /*   330 */   424,  121,  122,  112, 1165, 1165, 1006, 1009,  999,  999,
+ /*   340 */   119,  119,  120,  120,  120,  120,  392, 1358,  434, 1142,
+ /*   350 */   482, 1142, 1143, 1144,  996,  996, 1007, 1010,  445,  118,
+ /*   360 */   118,  118,  118,  117,  117,  116,  116,  116,  115,  424,
+ /*   370 */   121,  122,  112, 1165, 1165, 1006, 1009,  999,  999,  119,
+ /*   380 */   119,  120,  120,  120,  120, 1054, 1054,  465, 1431,  118,
+ /*   390 */   118,  118,  118,  117,  117,  116,  116,  116,  115,  424,
+ /*   400 */  1142,  451,  546, 1426, 1142, 1143, 1144,  233,  966, 1142,
+ /*   410 */   481,  478,  477,  171,  360,  392,  164,  407,  414,  842,
+ /*   420 */   476,  164,  185,  334,   71,   71, 1243, 1000,  118,  118,
+ /*   430 */   118,  118,  117,  117,  116,  116,  116,  115,  424,  121,
+ /*   440 */   122,  112, 1165, 1165, 1006, 1009,  999,  999,  119,  119,
+ /*   450 */   120,  120,  120,  120,  392, 1142, 1143, 1144,  835,   12,
+ /*   460 */   314,  509,  163,  356, 1142, 1143, 1144,  114,  111,  211,
+ /*   470 */   508,  290,  537,  546,  276,  180,  290,  537,  121,  122,
+ /*   480 */   112, 1165, 1165, 1006, 1009,  999,  999,  119,  119,  120,
+ /*   490 */   120,  120,  120,  345,  484,   71,   71,  118,  118,  118,
+ /*   500 */   118,  117,  117,  116,  116,  116,  115,  424, 1142,  209,
+ /*   510 */   411,  523, 1142, 1109, 1571,  378,  252,  269,  342,  487,
+ /*   520 */   337,  486,  238,  392,  513,  364, 1109, 1127,  333, 1109,
+ /*   530 */   191,  409,  286,   32,  457,  443,  118,  118,  118,  118,
+ /*   540 */   117,  117,  116,  116,  116,  115,  424,  121,  122,  112,
+ /*   550 */  1165, 1165, 1006, 1009,  999,  999,  119,  119,  120,  120,
+ /*   560 */   120,  120,  392, 1142, 1143, 1144,  987, 1142, 1143, 1144,
+ /*   570 */  1142,  233,  492, 1492,  481,  478,  477,    6,  163,  546,
+ /*   580 */   512,  546,  115,  424,  476,    5,  121,  122,  112, 1165,
+ /*   590 */  1165, 1006, 1009,  999,  999,  119,  119,  120,  120,  120,
+ /*   600 */   120,   13,   13,   13,   13,  118,  118,  118,  118,  117,
+ /*   610 */   117,  116,  116,  116,  115,  424,  403,  502,  408,  546,
+ /*   620 */  1486,  544, 1142,  892,  892, 1142, 1143, 1144, 1473, 1142,
+ /*   630 */   275,  392,  808,  809,  810,  971,  422,  422,  422,   16,
+ /*   640 */    16,   55,   55, 1242,  118,  118,  118,  118,  117,  117,
+ /*   650 */   116,  116,  116,  115,  424,  121,  122,  112, 1165, 1165,
+ /*   660 */  1006, 1009,  999,  999,  119,  119,  120,  120,  120,  120,
+ /*   670 */   392, 1189,    1,    1,  552,    2, 1193, 1142, 1143, 1144,
+ /*   680 */   194,  291,  898,  136, 1142, 1143, 1144,  897,  521, 1492,
+ /*   690 */  1273,    3,  380,    6,  121,  122,  112, 1165, 1165, 1006,
+ /*   700 */  1009,  999,  999,  119,  119,  120,  120,  120,  120,  858,
+ /*   710 */   546,  924,  546,  118,  118,  118,  118,  117,  117,  116,
+ /*   720 */   116,  116,  115,  424,  266,  266, 1092, 1569, 1142,  551,
+ /*   730 */  1569, 1193,   13,   13,   13,   13,  291,  543,  136,  392,
+ /*   740 */   485,  421,  420,  966,  344, 1273,  468,  410,  859,  279,
+ /*   750 */   140,  221,  118,  118,  118,  118,  117,  117,  116,  116,
+ /*   760 */   116,  115,  424,  121,  122,  112, 1165, 1165, 1006, 1009,
+ /*   770 */   999,  999,  119,  119,  120,  120,  120,  120,  546,  266,
+ /*   780 */   266,  428,  392, 1142, 1143, 1144, 1172,  830, 1172,  468,
+ /*   790 */   431,  145,  543, 1146,  401,  314,  439,  302,  838, 1490,
+ /*   800 */    71,   71,  412,    6, 1090,  473,  221,  100,  112, 1165,
+ /*   810 */  1165, 1006, 1009,  999,  999,  119,  119,  120,  120,  120,
+ /*   820 */   120,  118,  118,  118,  118,  117,  117,  116,  116,  116,
+ /*   830 */   115,  424,  237, 1425,  546,  451,  428,  287,  986,  546,
+ /*   840 */   236,  235,  234,  830,   97,  529,  429, 1265, 1265, 1146,
+ /*   850 */   494,  307,  430,  838,  977,  546,   71,   71,  976, 1241,
+ /*   860 */   546,   51,   51,  300,  118,  118,  118,  118,  117,  117,
+ /*   870 */   116,  116,  116,  115,  424,  194,  103,   70,   70,  266,
+ /*   880 */   266,  546,   71,   71,  266,  266,   30,  391,  344,  976,
+ /*   890 */   976,  978,  543,  528, 1109,  328,  392,  543,  495,  397,
+ /*   900 */  1470,  195,  530,   13,   13, 1358,  240, 1109,  277,  280,
+ /*   910 */  1109,  280,  304,  457,  306,  333,  392,   31,  188,  419,
+ /*   920 */   121,  122,  112, 1165, 1165, 1006, 1009,  999,  999,  119,
+ /*   930 */   119,  120,  120,  120,  120,  142,  392,  365,  457,  986,
+ /*   940 */   121,  122,  112, 1165, 1165, 1006, 1009,  999,  999,  119,
+ /*   950 */   119,  120,  120,  120,  120,  977,  323, 1142,  326,  976,
+ /*   960 */   121,  110,  112, 1165, 1165, 1006, 1009,  999,  999,  119,
+ /*   970 */   119,  120,  120,  120,  120,  464,  377, 1185,  118,  118,
+ /*   980 */   118,  118,  117,  117,  116,  116,  116,  115,  424, 1142,
+ /*   990 */   976,  976,  978,  305,    9,  366,  244,  362,  118,  118,
+ /*  1000 */   118,  118,  117,  117,  116,  116,  116,  115,  424,  313,
+ /*  1010 */   546,  344, 1142, 1143, 1144,  299,  290,  537,  118,  118,
+ /*  1020 */   118,  118,  117,  117,  116,  116,  116,  115,  424, 1263,
+ /*  1030 */  1263, 1163,   13,   13,  278,  421,  420,  468,  392,  923,
+ /*  1040 */   260,  260,  289, 1169, 1142, 1143, 1144,  189, 1171,  266,
+ /*  1050 */   266,  468,  390,  543, 1186,  546, 1170,  263,  144,  489,
+ /*  1060 */   922,  546,  543,  122,  112, 1165, 1165, 1006, 1009,  999,
+ /*  1070 */   999,  119,  119,  120,  120,  120,  120,   71,   71, 1142,
+ /*  1080 */  1172, 1272, 1172,   13,   13,  898, 1070, 1163,  546,  468,
+ /*  1090 */   897,  107,  538, 1491,    4, 1268, 1109,    6,  525, 1049,
+ /*  1100 */    12, 1071, 1092, 1570,  312,  455, 1570,  520,  541, 1109,
+ /*  1110 */    56,   56, 1109, 1489,  423, 1358, 1072,    6,  345,  285,
+ /*  1120 */   118,  118,  118,  118,  117,  117,  116,  116,  116,  115,
+ /*  1130 */   424,  425, 1271,  321, 1142, 1143, 1144,  878,  266,  266,
+ /*  1140 */  1277,  107,  538,  535,    4, 1488,  293,  879, 1211,    6,
+ /*  1150 */   210,  543,  543,  164,  294,  496,  416,  204,  541,  267,
+ /*  1160 */   267, 1214,  398,  511,  499,  204,  266,  266,  396,  531,
+ /*  1170 */     8,  986,  543,  519,  546,  922,  458,  105,  105,  543,
+ /*  1180 */  1090,  425,  266,  266,  106,  417,  425,  548,  547,  266,
+ /*  1190 */   266,  976,  518,  535, 1373,  543,   15,   15,  266,  266,
+ /*  1200 */   456, 1120,  543,  266,  266, 1070, 1372,  515,  290,  537,
+ /*  1210 */   546,  543,  514,   97,  444,  316,  543,  546,  922,  125,
+ /*  1220 */  1071,  986,  976,  976,  978,  979,   27,  105,  105,  401,
+ /*  1230 */   343, 1511,   44,   44,  106, 1072,  425,  548,  547,   57,
+ /*  1240 */    57,  976,  343, 1511,  107,  538,  546,    4,  462,  401,
+ /*  1250 */   214, 1120,  459,  297,  377, 1091,  534, 1309,  546,  539,
+ /*  1260 */   398,  541,  290,  537,  104,  244,  102,  526,   58,   58,
+ /*  1270 */   546,  199,  976,  976,  978,  979,   27, 1516, 1131,  427,
+ /*  1280 */    59,   59,  270,  237,  425,  138,   95,  375,  375,  374,
+ /*  1290 */   255,  372,   60,   60,  817, 1180,  535,  546,  273,  546,
+ /*  1300 */  1163, 1308,  389,  388,  546,  438,  546,  215,  210,  296,
+ /*  1310 */   515,  849,  546,  265,  208,  516, 1476,  295,  274,   61,
+ /*  1320 */    61,   62,   62,  308,  986,  109,   45,   45,   46,   46,
+ /*  1330 */   105,  105, 1186,  922,   47,   47,  341,  106,  546,  425,
+ /*  1340 */   548,  547, 1542,  546,  976,  867,  340,  217,  546,  937,
+ /*  1350 */   397,  107,  538,  218,    4,  156, 1163,  938,  158,  546,
+ /*  1360 */    49,   49, 1162,  546,  268,   50,   50,  546,  541, 1450,
+ /*  1370 */    63,   63,  546, 1449,  216,  976,  976,  978,  979,   27,
+ /*  1380 */   446,   64,   64,  546,  460,   65,   65,  546,  318,   14,
+ /*  1390 */    14,  425, 1305,  546,   66,   66, 1087,  546,  141,  379,
+ /*  1400 */    38,  546,  963,  535,  322,  127,  127,  546,  393,   67,
+ /*  1410 */    67,  546,  325,  290,  537,   52,   52,  515,  546,   68,
+ /*  1420 */    68,  845,  514,   69,   69,  399,  165,  857,  856,   53,
+ /*  1430 */    53,  986,  311,  151,  151,   97,  432,  105,  105,  327,
+ /*  1440 */   152,  152,  526, 1048,  106, 1048,  425,  548,  547, 1131,
+ /*  1450 */   427,  976, 1032,  270,  968,  239,  329,  243,  375,  375,
+ /*  1460 */   374,  255,  372,  940,  941,  817, 1296,  546,  220,  546,
+ /*  1470 */   107,  538,  546,    4,  546, 1256,  199,  845,  215, 1036,
+ /*  1480 */   296, 1530,  976,  976,  978,  979,   27,  541,  295,   76,
+ /*  1490 */    76,   54,   54,  980,   72,   72,  128,  128,  864,  865,
+ /*  1500 */   107,  538,  546,    4, 1047,  546, 1047,  533,  469,  546,
+ /*  1510 */   425,  546,  450, 1240,  546,  243,  546,  541,  217,  546,
+ /*  1520 */   452,  197,  535,  243,   73,   73,  156,  129,  129,  158,
+ /*  1530 */   336,  130,  130,  126,  126, 1036,  150,  150,  149,  149,
+ /*  1540 */   425,  134,  134,  317,  474,  216,   97,  239,  331,  980,
+ /*  1550 */   986,   97,  535,  346,  347,  546,  105,  105,  902,  931,
+ /*  1560 */   546,  895,  243,  106,  109,  425,  548,  547,  546, 1505,
+ /*  1570 */   976,  828,   99,  538,  139,    4,  546,  133,  133,  393,
+ /*  1580 */   986, 1317,  131,  131,  290,  537,  105,  105, 1357,  541,
+ /*  1590 */   132,  132, 1292,  106, 1303,  425,  548,  547,   75,   75,
+ /*  1600 */   976,  976,  976,  978,  979,   27,  546,  432,  896, 1289,
+ /*  1610 */   532,  109,  425, 1363,  546, 1221, 1213, 1202,  258,  546,
+ /*  1620 */   349,  546, 1201,   11,  535, 1203, 1524,  351,   77,   77,
+ /*  1630 */   376,  976,  976,  978,  979,   27,   74,   74,  353,  213,
+ /*  1640 */   301,   43,   43,   48,   48,  437,  310,  201,  303, 1350,
+ /*  1650 */   315,  355,  986,  454,  479, 1239,  339,  192,  105,  105,
+ /*  1660 */  1422, 1421,  193,  536,  205,  106, 1527,  425,  548,  547,
+ /*  1670 */  1180,  167,  976,  270,  247, 1469, 1467, 1177,  375,  375,
+ /*  1680 */   374,  255,  372,  200,  369,  817,  400,   83,   79,   82,
+ /*  1690 */  1427,  448,  177,   95, 1342,  161,  169, 1339,  215,  440,
+ /*  1700 */   296,  172,  173,  976,  976,  978,  979,   27,  295,  174,
+ /*  1710 */   175,  441,  472,  223, 1347,  383,   35,  381,   36,  461,
+ /*  1720 */    88, 1353,  181,  447,  384, 1416,  227,  467,  259,  229,
+ /*  1730 */   186,  488,  470,  324, 1250,  230,  231,  320,  217, 1204,
+ /*  1740 */  1438, 1259,  386, 1258,  413,   90,  156,  849, 1541,  158,
+ /*  1750 */   206,  415, 1540,  507, 1300, 1257,   94,  348, 1229, 1301,
+ /*  1760 */   387, 1510, 1228,  338, 1227,  216,  350, 1539,  498,  283,
+ /*  1770 */   284, 1249,  501, 1299,  352,  245,  246,  418, 1298,  354,
+ /*  1780 */  1496, 1495,  124,   10,  526,  363,  101, 1324,  253,   96,
+ /*  1790 */   510, 1210,   34,  549, 1137,  254,  256,  257,  166,  393,
+ /*  1800 */   550, 1199, 1282,  361,  290,  537, 1281,  196,  367,  368,
+ /*  1810 */  1194,  153, 1454,  137,  281, 1323, 1455,  804,  154,  426,
+ /*  1820 */   198,  155, 1453, 1452,  292,  212,  202,  432, 1402,  203,
+ /*  1830 */   271,  135,  288,   78, 1046, 1044,  960,  168,  157,  881,
+ /*  1840 */   170,  219,  309,  222, 1060,  176,  964,  159,  402,   84,
+ /*  1850 */   178,  404,   85,   86,   87,  160, 1063,  224,  394,  395,
+ /*  1860 */   225, 1059,  146,   18,  226,  319,  243, 1174,  466,  228,
+ /*  1870 */  1052,  182,  183,   37,  819,  471,  340,  232,  332,  483,
+ /*  1880 */   184,   89,  162,   19,   20,  475,   91,  480,  847,  335,
+ /*  1890 */   147,  860,  282,   92,  490,   93, 1125,  148, 1012, 1095,
+ /*  1900 */    39,  497, 1096,   40,  500,  262,  207,  264,  930,  187,
+ /*  1910 */   925,  109, 1111, 1115, 1113,    7, 1099,  242,   33, 1119,
+ /*  1920 */    21,  522,   22,   23,   24, 1118,   25,  190,   97,   26,
+ /*  1930 */  1027, 1013, 1011, 1015, 1069, 1016, 1068,  249,  248,   28,
+ /*  1940 */    41,  891,  981,  829,  108,   29,  250,  542,  251,  370,
+ /*  1950 */   373, 1133, 1132, 1190, 1190, 1190, 1190, 1190, 1190, 1190,
+ /*  1960 */  1532, 1531,
 };
 static const YYCODETYPE yy_lookahead[] = {
- /*     0 */   187,  187,  187,  216,  217,  187,  206,  187,  264,  265,
- /*    10 */   266,  187,  225,  187,  209,  187,  264,  265,  266,   19,
- /*    20 */   187,  187,  209,  210,  209,  210,  187,  209,  210,  209,
- /*    30 */   210,   31,  209,  209,  210,  209,  210,  285,  224,   39,
- /*    40 */   203,  204,  205,   43,   44,   45,   46,   47,   48,   49,
- /*    50 */    50,   51,   52,   53,   54,   55,   56,   57,  230,   19,
- /*    60 */   181,  182,  183,  184,  230,  245,  233,  208,  189,  245,
- /*    70 */   191,  245,   26,  206,  254,  216,  276,  198,  254,  198,
- /*    80 */   254,  281,  187,   43,   44,   45,   46,   47,   48,   49,
- /*    90 */    50,   51,   52,   53,   54,   55,   56,   57,  259,   99,
- /*   100 */   100,  101,  102,  103,  104,  105,  106,  107,  108,  109,
- /*   110 */   231,  232,  231,  232,  286,  302,  303,  302,   22,  304,
- /*   120 */   302,  303,   76,  244,   11,  244,   86,   19,   88,  248,
- /*   130 */   249,  264,  265,  266,   26,   89,  198,  258,   92,   99,
- /*   140 */   100,  101,  102,  103,  104,  105,  106,  107,  108,  109,
- /*   150 */   105,   43,   44,   45,   46,   47,   48,   49,   50,   51,
- /*   160 */    52,   53,   54,   55,   56,   57,  212,  288,  273,  231,
- /*   170 */   232,  105,  106,  107,  108,  109,  131,   69,  203,  204,
- /*   180 */   205,  136,  244,   99,  100,  101,  102,  103,  104,  105,
- /*   190 */   106,  107,  108,  109,   15,  103,  104,   19,  260,  103,
- /*   200 */   104,   54,   55,   56,   57,   58,   22,   99,  100,  101,
- /*   210 */   102,  103,  104,  105,  106,  107,  108,  109,  264,  265,
- /*   220 */   266,   43,   44,   45,   46,   47,   48,   49,   50,   51,
- /*   230 */    52,   53,   54,   55,   56,   57,   19,  124,  125,   60,
- /*   240 */   148,   24,  150,   59,  187,   67,   99,  100,  101,  102,
- /*   250 */   103,  104,  105,  106,  107,  108,  109,  187,  187,  109,
- /*   260 */    43,   44,   45,   46,   47,   48,   49,   50,   51,   52,
- /*   270 */    53,   54,   55,   56,   57,  204,  205,   99,  100,  101,
- /*   280 */   102,  103,  104,  105,  106,  107,  108,  109,  103,  104,
- /*   290 */   105,  106,  107,  108,  109,   59,  112,  113,  114,   76,
- /*   300 */   231,  232,  187,   19,   19,   22,   23,   23,   54,   55,
- /*   310 */    56,   57,   89,  244,  199,   92,   99,  100,  101,  102,
- /*   320 */   103,  104,  105,  106,  107,  108,  109,   43,   44,   45,
- /*   330 */    46,   47,   48,   49,   50,   51,   52,   53,   54,   55,
- /*   340 */    56,   57,   19,  212,  187,  274,   23,   26,  112,  113,
- /*   350 */   114,  294,  295,   99,  100,  101,  102,  103,  104,  105,
- /*   360 */   106,  107,  108,  109,   59,  295,   43,   44,   45,   46,
- /*   370 */    47,   48,   49,   50,   51,   52,   53,   54,   55,   56,
- /*   380 */    57,   98,  146,   99,  100,  101,  102,  103,  104,  105,
- /*   390 */   106,  107,  108,  109,  109,  264,  265,  266,  187,  187,
- /*   400 */   115,  116,  117,  118,  119,  120,  121,   73,   59,   19,
- /*   410 */   105,   23,  127,   23,   26,   81,  259,  112,  113,  114,
- /*   420 */   187,   72,   99,  100,  101,  102,  103,  104,  105,  106,
- /*   430 */   107,  108,  109,   43,   44,   45,   46,   47,   48,   49,
- /*   440 */    50,   51,   52,   53,   54,   55,   56,   57,   19,  124,
- /*   450 */   125,  182,   23,  184,  187,  134,  135,  123,  189,  131,
- /*   460 */   191,  112,  113,  114,  136,  187,  233,  198,  134,  135,
- /*   470 */   198,  259,   43,   44,   45,   46,   47,   48,   49,   50,
- /*   480 */    51,   52,   53,   54,   55,   56,   57,  209,  210,   99,
- /*   490 */   100,  101,  102,  103,  104,  105,  106,  107,  108,  109,
- /*   500 */   231,  232,  206,  231,  232,  187,   59,  296,  297,   76,
- /*   510 */   160,  161,  301,  244,  232,   19,  244,  297,   59,   23,
- /*   520 */    87,  301,   89,  245,   26,   92,  244,  258,   99,  100,
- /*   530 */   101,  102,  103,  104,  105,  106,  107,  108,  109,   43,
- /*   540 */    44,   45,   46,   47,   48,   49,   50,   51,   52,   53,
- /*   550 */    54,   55,   56,   57,   19,  187,   97,  288,   23,  112,
- /*   560 */   113,  114,  115,  296,  297,  118,  119,  120,  301,  108,
- /*   570 */   109,  112,  113,  255,  141,  128,  117,  281,   43,   44,
- /*   580 */    45,   46,   47,   48,   49,   50,   51,   52,   53,   54,
- /*   590 */    55,   56,   57,  187,  187,   99,  100,  101,  102,  103,
- /*   600 */   104,  105,  106,  107,  108,  109,   26,  148,  149,  150,
- /*   610 */   115,   97,   59,  118,  119,  120,  209,  210,   73,   59,
- /*   620 */   122,   19,  209,  128,  256,   72,  187,  113,  187,   81,
- /*   630 */   223,  117,  227,  228,   99,  100,  101,  102,  103,  104,
- /*   640 */   105,  106,  107,  108,  109,   43,   44,   45,   46,   47,
- /*   650 */    48,   49,   50,   51,   52,   53,   54,   55,   56,   57,
- /*   660 */    19,  255,  148,  149,  150,  112,  113,  114,  123,  124,
- /*   670 */   125,  230,  112,  113,  114,   22,  297,   22,   81,   22,
- /*   680 */   301,   59,  134,  135,   43,   44,   45,   46,   47,   48,
- /*   690 */    49,   50,   51,   52,   53,   54,   55,   56,   57,  139,
- /*   700 */   192,   99,  100,  101,  102,  103,  104,  105,  106,  107,
- /*   710 */   108,  109,   59,  116,   59,  187,   59,  231,  232,   46,
- /*   720 */    47,   48,   49,   16,   12,  145,  198,   22,  187,  187,
- /*   730 */   244,  134,  135,  222,  112,  113,  114,  209,  210,   27,
- /*   740 */    99,  100,  101,  102,  103,  104,  105,  106,  107,  108,
- /*   750 */   109,  209,  210,  187,   42,  187,  154,  227,  228,  231,
- /*   760 */   232,  139,   22,   23,   59,  112,  113,  114,  113,  112,
- /*   770 */   113,  114,  244,  245,  233,   63,   19,  209,  210,  271,
- /*   780 */   187,   24,  254,  275,   77,   73,   79,  245,  195,  260,
- /*   790 */   117,  223,  199,   22,   23,  154,   19,   26,   22,  187,
- /*   800 */    43,   44,   45,   46,   47,   48,   49,   50,   51,   52,
- /*   810 */    53,   54,   55,   56,   57,   19,  187,  112,  113,  114,
- /*   820 */    43,   44,   45,   46,   47,   48,   49,   50,   51,   52,
- /*   830 */    53,   54,   55,   56,   57,   59,  263,  187,   98,   43,
- /*   840 */    44,   45,   46,   47,   48,   49,   50,   51,   52,   53,
- /*   850 */    54,   55,   56,   57,  204,  205,   99,  100,  101,  102,
- /*   860 */   103,  104,  105,  106,  107,  108,  109,  255,  130,   98,
- /*   870 */   132,  133,  299,  300,  198,  187,   99,  100,  101,  102,
- /*   880 */   103,  104,  105,  106,  107,  108,  109,  187,  112,  113,
- /*   890 */   114,  187,  241,  187,  243,   99,  100,  101,  102,  103,
- /*   900 */   104,  105,  106,  107,  108,  109,   19,  231,  232,  209,
- /*   910 */   210,  282,   59,  209,  210,  209,  210,   16,  230,   19,
- /*   920 */   244,   22,   23,  223,  274,   26,   19,  223,  187,  223,
- /*   930 */   198,   44,   45,   46,   47,   48,   49,   50,   51,   52,
- /*   940 */    53,   54,   55,   56,   57,   45,   46,   47,   48,   49,
- /*   950 */    50,   51,   52,   53,   54,   55,   56,   57,   19,   20,
- /*   960 */   187,   22,  187,  231,  232,  112,  113,  114,  123,  124,
- /*   970 */   125,    7,    8,    9,  187,   36,  244,   24,   77,   21,
- /*   980 */    79,  187,  209,  210,  187,  263,   99,  100,  101,  102,
- /*   990 */   103,  104,  105,  106,  107,  108,  109,   98,   59,   99,
- /*  1000 */   100,  101,  102,  103,  104,  105,  106,  107,  108,  109,
- /*  1010 */    71,  187,   59,  187,  187,   19,   20,  187,   22,  112,
- /*  1020 */    81,  299,  300,  282,  230,  199,  291,  292,   22,  187,
- /*  1030 */    24,  256,   36,  209,  210,  187,   97,   35,   80,  209,
- /*  1040 */   210,  268,  103,  104,   48,  187,  220,  223,  222,  110,
- /*  1050 */    59,  112,  113,  114,  187,   59,  117,  156,  187,  179,
- /*  1060 */   180,  181,  182,  183,  184,   59,  113,   71,   66,  189,
- /*  1070 */    22,  191,  230,  134,  135,  245,   74,  119,  198,  282,
- /*  1080 */   297,   85,  224,  198,  301,  187,   90,  148,  149,  150,
- /*  1090 */   151,  152,   19,   97,  103,  104,  123,  124,  125,  103,
- /*  1100 */   104,   53,  111,  112,  113,  114,  110,  116,  112,  113,
- /*  1110 */   114,  231,  232,  117,  156,  124,  231,  232,  297,  113,
- /*  1120 */   187,   24,  301,  256,  244,  201,  202,  256,  126,  244,
- /*  1130 */   187,  198,  187,  187,   23,  187,  187,   26,  258,  148,
- /*  1140 */    19,  150,  209,  210,  148,  149,  150,  151,  152,    0,
- /*  1150 */     1,    2,  209,  210,    5,  209,  210,  209,  210,   10,
- /*  1160 */    11,   12,   13,   14,  231,  232,   17,   46,  288,   19,
- /*  1170 */    20,  223,   22,  236,  198,   66,  187,  244,  245,   30,
- /*  1180 */    12,   32,  198,  246,   59,  112,   36,  187,  245,   40,
- /*  1190 */   198,  245,  117,   29,   85,   27,   26,   33,  209,  210,
- /*  1200 */   297,   76,  127,   94,  301,  256,   26,  231,  232,   59,
- /*  1210 */    42,  153,   87,  155,   89,  231,  232,   92,   31,   70,
- /*  1220 */   244,   71,   26,  231,  232,  114,   39,   78,  244,   65,
- /*  1230 */    81,   63,  111,  233,  137,   85,  244,  112,  113,  114,
- /*  1240 */    90,   22,   59,   24,   95,  201,  202,   97,  127,  187,
- /*  1250 */   139,  142,  187,  103,  104,   19,   20,  187,   22,  187,
- /*  1260 */   110,  187,  112,  113,  114,  187,  141,  117,  141,  187,
- /*  1270 */    23,  187,   36,   26,  209,  210,  134,  135,  129,  209,
- /*  1280 */   210,  209,  210,  134,  135,   22,  159,  209,  210,  187,
- /*  1290 */   187,  209,  210,  209,  210,   59,  113,  187,  148,  149,
- /*  1300 */   150,  151,  152,  289,  290,  187,  157,   71,  248,  249,
- /*  1310 */   114,  141,  209,  210,   46,  125,  116,  117,  138,   19,
- /*  1320 */    20,   85,   22,  148,   61,  150,   90,  209,  210,   23,
- /*  1330 */     7,    8,   26,   97,  187,  139,   36,  147,   59,  103,
- /*  1340 */   104,   19,   20,  187,   22,   59,  110,  187,  112,  113,
- /*  1350 */   114,    1,    2,  117,  187,    5,  209,  210,   36,   59,
- /*  1360 */    10,   11,   12,   13,   14,  209,  210,   17,   59,  209,
- /*  1370 */   210,   71,  187,  148,  250,  150,  209,  210,  187,  111,
- /*  1380 */    30,   59,   32,   22,  148,  149,  150,  151,  152,  187,
- /*  1390 */    40,  187,  113,   71,  209,  210,  187,   97,  187,  113,
- /*  1400 */   209,  210,  187,  103,  104,  105,   23,  187,  187,   26,
- /*  1410 */   110,  187,  112,  113,  114,   83,   84,  117,   23,   97,
- /*  1420 */    70,   26,  113,  218,  187,  103,  104,  187,   78,  209,
- /*  1430 */   210,   81,  110,  187,  112,  113,  114,   19,   20,  117,
- /*  1440 */    22,  187,  187,  187,  187,   95,  209,  210,  148,  149,
- /*  1450 */   150,  151,  152,  187,   36,   23,  187,  187,   26,  187,
- /*  1460 */   187,  187,  187,  209,  210,  209,  210,  187,  187,  218,
- /*  1470 */   148,  149,  150,  151,  152,  209,  210,   59,  187,  129,
- /*  1480 */   187,  209,  210,  187,  134,  135,  187,  306,  187,   71,
- /*  1490 */   209,  210,   23,  228,  187,   26,   23,  187,  137,   26,
- /*  1500 */   209,  210,  209,  210,  187,  209,  210,  157,  209,  210,
- /*  1510 */   209,  210,  218,  187,  187,   97,  209,  210,  187,  278,
- /*  1520 */    23,  103,  104,   26,  187,  187,  187,  187,  110,  187,
- /*  1530 */   112,  113,  114,  187,  187,  117,    5,  247,  187,  187,
- /*  1540 */   187,   10,   11,   12,   13,   14,  209,  210,   17,  209,
- /*  1550 */   210,  209,  210,  187,  187,  187,  209,  210,  187,   23,
- /*  1560 */   187,   30,   26,   32,  187,  187,  148,  149,  150,  151,
- /*  1570 */   152,   40,  187,  187,  187,  209,  210,  209,  210,  187,
- /*  1580 */   209,  210,  209,  210,  187,  187,  209,  210,  187,  277,
- /*  1590 */   234,  187,  247,  187,  209,  210,  209,  210,  187,  235,
- /*  1600 */   187,   70,  187,  207,  247,  247,  247,  209,  210,   78,
- /*  1610 */   209,  210,   81,  209,  210,  209,  210,  187,  185,  238,
- /*  1620 */   209,  210,  209,  210,  209,  210,   95,  251,  287,  238,
- /*  1630 */   251,   23,   23,   23,   26,   26,   26,  283,   23,  209,
- /*  1640 */   210,   26,  213,  238,  221,  283,  212,  212,  217,  212,
- /*  1650 */   251,  241,  270,  241,  237,  235,  190,   60,  137,  287,
- /*  1660 */   129,  194,  194,   38,  284,  134,  135,  273,  284,  194,
- /*  1670 */   146,  111,   22,   43,  226,  145,  262,  261,  238,   18,
- /*  1680 */   229,  229,  229,  229,  194,   18,  193,  238,  157,  262,
- /*  1690 */   226,  226,  194,  238,  238,  193,  153,  261,   62,  280,
- /*  1700 */   279,  194,  193,   22,  194,  214,  193,  111,  194,  193,
- /*  1710 */   214,  211,  211,   64,  211,  211,  122,  211,  219,  214,
- /*  1720 */   109,  213,  160,  211,  300,  140,  211,  253,  111,  272,
- /*  1730 */   219,  214,  272,  214,  252,  194,  253,  252,   91,  253,
- /*  1740 */   252,   82,  253,  305,  252,  144,  305,  141,   22,  194,
- /*  1750 */   269,  257,  257,  153,  267,  143,  142,   25,  197,   26,
- /*  1760 */   242,  241,  196,  240,  242,  239,  238,   13,  188,  188,
- /*  1770 */     6,  293,  186,  186,  186,  200,  206,  293,  206,  206,
- /*  1780 */   206,    4,  200,  215,  215,  207,  207,    3,   22,  206,
- /*  1790 */   200,  158,   96,   15,   23,   16,   23,  135,  146,  126,
- /*  1800 */    24,  138,   20,   16,  140,    1,  138,  147,  126,   61,
- /*  1810 */    53,   37,  146,   53,   53,  290,   53,  126,  112,   34,
- /*  1820 */   137,    1,    5,   22,  111,  156,   68,   68,   26,   41,
- /*  1830 */    75,  137,  111,   24,   20,   19,  127,  121,   23,   67,
- /*  1840 */    22,   22,   67,   22,   22,   37,   22,   67,   23,  145,
- /*  1850 */    22,   28,   23,   23,   23,  137,   23,   22,   26,   22,
- /*  1860 */    24,   23,  112,   24,   23,   23,   22,  139,   34,   26,
- /*  1870 */    75,   88,   86,   75,   34,   23,   22,   24,   22,   34,
- /*  1880 */    34,   34,   93,   34,   26,   26,   23,   23,   23,   34,
- /*  1890 */    23,   23,   44,   23,   11,   26,   22,   22,   26,   23,
- /*  1900 */    23,   22,   22,   15,  137,  137,  137,  137,   23,    1,
- /*  1910 */   307,  307,  131,  307,  307,  307,  307,  307,  307,  307,
- /*  1920 */   307,  307,  307,  307,  307,  307,  307,  307,  307,  307,
- /*  1930 */   307,  307,  307,  307,  307,  307,  307,  307,  307,  307,
- /*  1940 */   307,  307,  307,  307,  307,  307,  307,  307,  307,  307,
- /*  1950 */   307,  307,  307,  307,  307,  307,  307,  307,  307,  307,
- /*  1960 */   307,  307,  307,  307,  307,  307,  307,  307,  307,  307,
- /*  1970 */   307,  307,  307,  307,  307,  307,  307,  307,  307,  307,
- /*  1980 */   307,  307,  307,  307,  307,  307,  307,  307,  307,  307,
- /*  1990 */   307,  307,  307,  307,  307,  307,  307,  307,  307,  307,
- /*  2000 */   307,  307,  307,  307,  307,  307,  307,  307,  307,  307,
- /*  2010 */   307,  307,  307,  307,  307,  307,  307,  307,  307,  307,
- /*  2020 */   307,  307,  307,  307,  307,  307,  307,  307,  307,  307,
- /*  2030 */   307,  307,  307,  307,  307,  307,  307,  307,  307,  307,
- /*  2040 */   307,  307,  307,  307,  307,  307,  307,  307,  307,  307,
- /*  2050 */   307,  307,  307,  307,  307,  307,  307,  307,  307,  307,
- /*  2060 */   307,  307,  307,  307,  307,  307,  307,  307,  307,  307,
- /*  2070 */   307,  307,  307,  307,  307,  307,  307,  307,  307,  307,
- /*  2080 */   307,  307,  307,  307,  307,  307,  307,  307,  307,  307,
- /*  2090 */   307,  307,
+ /*     0 */   189,  211,  189,  189,  218,  189,  220,  189,  267,  268,
+ /*    10 */   269,  189,  210,  189,  228,  189,  267,  268,  269,   19,
+ /*    20 */   218,  189,  211,  212,  211,  212,  211,  211,  212,  211,
+ /*    30 */   212,   31,  211,  211,  212,  211,  212,  288,  300,   39,
+ /*    40 */    21,  189,  304,   43,   44,   45,   46,   47,   48,   49,
+ /*    50 */    50,   51,   52,   53,   54,   55,   56,   57,  225,   19,
+ /*    60 */   189,  183,  184,  185,  186,  189,  248,  263,  236,  191,
+ /*    70 */   248,  193,  248,  197,  208,  257,  262,  201,  200,  257,
+ /*    80 */   200,  257,   81,   43,   44,   45,   46,   47,   48,   49,
+ /*    90 */    50,   51,   52,   53,   54,   55,   56,   57,  189,   80,
+ /*   100 */   189,  101,  102,  103,  104,  105,  106,  107,  108,  109,
+ /*   110 */   110,  111,  234,  235,  234,  235,  305,  306,  305,  118,
+ /*   120 */   307,  305,  306,  297,  298,  247,   86,  247,   88,   19,
+ /*   130 */   259,  251,  252,  267,  268,  269,   26,  136,  137,  261,
+ /*   140 */   121,  101,  102,  103,  104,  105,  106,  107,  108,  109,
+ /*   150 */   110,  111,   59,   43,   44,   45,   46,   47,   48,   49,
+ /*   160 */    50,   51,   52,   53,   54,   55,   56,   57,  259,  291,
+ /*   170 */   105,  106,  107,  108,  109,  110,  111,  158,  189,   69,
+ /*   180 */   101,  102,  103,  104,  105,  106,  107,  108,  109,  110,
+ /*   190 */   111,  107,  108,  109,  110,  111,  205,  206,  207,   19,
+ /*   200 */    19,   54,   55,   56,   57,   58,   29,  114,  115,  116,
+ /*   210 */    33,  101,  102,  103,  104,  105,  106,  107,  108,  109,
+ /*   220 */   110,  111,  233,   43,   44,   45,   46,   47,   48,   49,
+ /*   230 */    50,   51,   52,   53,   54,   55,   56,   57,   19,  126,
+ /*   240 */   127,  148,   65,   24,  214,  200,   59,   67,  101,  102,
+ /*   250 */   103,  104,  105,  106,  107,  108,  109,  110,  111,   22,
+ /*   260 */   189,  111,   43,   44,   45,   46,   47,   48,   49,   50,
+ /*   270 */    51,   52,   53,   54,   55,   56,   57,  206,  207,  234,
+ /*   280 */   235,  101,  102,  103,  104,  105,  106,  107,  108,  109,
+ /*   290 */   110,  111,  247,   76,  107,  114,   59,  267,  268,  269,
+ /*   300 */   189,  114,  115,  116,  162,  163,   89,   19,  263,   92,
+ /*   310 */   189,   23,   54,   55,   56,   57,  189,  206,  207,   22,
+ /*   320 */   101,  102,  103,  104,  105,  106,  107,  108,  109,  110,
+ /*   330 */   111,   43,   44,   45,   46,   47,   48,   49,   50,   51,
+ /*   340 */    52,   53,   54,   55,   56,   57,   19,  189,  277,   59,
+ /*   350 */    23,  114,  115,  116,   46,   47,   48,   49,   61,  101,
+ /*   360 */   102,  103,  104,  105,  106,  107,  108,  109,  110,  111,
+ /*   370 */    43,   44,   45,   46,   47,   48,   49,   50,   51,   52,
+ /*   380 */    53,   54,   55,   56,   57,  125,  126,  127,  277,  101,
+ /*   390 */   102,  103,  104,  105,  106,  107,  108,  109,  110,  111,
+ /*   400 */    59,  189,  189,  276,  114,  115,  116,  117,   73,   59,
+ /*   410 */   120,  121,  122,   72,  214,   19,   81,  259,   19,   23,
+ /*   420 */   130,   81,   72,   24,  211,  212,  221,  119,  101,  102,
+ /*   430 */   103,  104,  105,  106,  107,  108,  109,  110,  111,   43,
+ /*   440 */    44,   45,   46,   47,   48,   49,   50,   51,   52,   53,
+ /*   450 */    54,   55,   56,   57,   19,  114,  115,  116,   23,  208,
+ /*   460 */   125,  248,  189,  189,  114,  115,  116,  267,  268,  269,
+ /*   470 */   189,  136,  137,  189,  262,   22,  136,  137,   43,   44,
+ /*   480 */    45,   46,   47,   48,   49,   50,   51,   52,   53,   54,
+ /*   490 */    55,   56,   57,  189,   95,  211,  212,  101,  102,  103,
+ /*   500 */   104,  105,  106,  107,  108,  109,  110,  111,   59,  189,
+ /*   510 */   111,  189,   59,   76,  294,  295,  117,  118,  119,  120,
+ /*   520 */   121,  122,  123,   19,   87,  189,   89,   23,  129,   92,
+ /*   530 */   279,  227,  248,   22,  189,  284,  101,  102,  103,  104,
+ /*   540 */   105,  106,  107,  108,  109,  110,  111,   43,   44,   45,
+ /*   550 */    46,   47,   48,   49,   50,   51,   52,   53,   54,   55,
+ /*   560 */    56,   57,   19,  114,  115,  116,   23,  114,  115,  116,
+ /*   570 */    59,  117,  299,  300,  120,  121,  122,  304,  189,  189,
+ /*   580 */   143,  189,  110,  111,  130,   22,   43,   44,   45,   46,
+ /*   590 */    47,   48,   49,   50,   51,   52,   53,   54,   55,   56,
+ /*   600 */    57,  211,  212,  211,  212,  101,  102,  103,  104,  105,
+ /*   610 */   106,  107,  108,  109,  110,  111,  226,  189,  226,  189,
+ /*   620 */   298,  132,   59,  134,  135,  114,  115,  116,  189,   59,
+ /*   630 */   285,   19,    7,    8,    9,   23,  205,  206,  207,  211,
+ /*   640 */   212,  211,  212,  221,  101,  102,  103,  104,  105,  106,
+ /*   650 */   107,  108,  109,  110,  111,   43,   44,   45,   46,   47,
+ /*   660 */    48,   49,   50,   51,   52,   53,   54,   55,   56,   57,
+ /*   670 */    19,  181,  182,  183,  184,  185,  186,  114,  115,  116,
+ /*   680 */   189,  191,  133,  193,  114,  115,  116,  138,  299,  300,
+ /*   690 */   200,   22,  201,  304,   43,   44,   45,   46,   47,   48,
+ /*   700 */    49,   50,   51,   52,   53,   54,   55,   56,   57,   35,
+ /*   710 */   189,  141,  189,  101,  102,  103,  104,  105,  106,  107,
+ /*   720 */   108,  109,  110,  111,  234,  235,   22,   23,   59,  184,
+ /*   730 */    26,  186,  211,  212,  211,  212,  191,  247,  193,   19,
+ /*   740 */    66,  105,  106,   73,  189,  200,  189,  226,   74,  226,
+ /*   750 */    22,  261,  101,  102,  103,  104,  105,  106,  107,  108,
+ /*   760 */   109,  110,  111,   43,   44,   45,   46,   47,   48,   49,
+ /*   770 */    50,   51,   52,   53,   54,   55,   56,   57,  189,  234,
+ /*   780 */   235,  291,   19,  114,  115,  116,  150,   59,  152,  189,
+ /*   790 */   233,  236,  247,   59,  189,  125,  126,  127,   59,  300,
+ /*   800 */   211,  212,  128,  304,  100,   19,  261,  156,   45,   46,
+ /*   810 */    47,   48,   49,   50,   51,   52,   53,   54,   55,   56,
+ /*   820 */    57,  101,  102,  103,  104,  105,  106,  107,  108,  109,
+ /*   830 */   110,  111,   46,  233,  189,  189,  291,  248,   99,  189,
+ /*   840 */   125,  126,  127,  115,   26,  200,  289,  230,  231,  115,
+ /*   850 */   200,   16,  189,  114,  115,  189,  211,  212,  119,  221,
+ /*   860 */   189,  211,  212,  258,  101,  102,  103,  104,  105,  106,
+ /*   870 */   107,  108,  109,  110,  111,  189,  156,  211,  212,  234,
+ /*   880 */   235,  189,  211,  212,  234,  235,   22,  201,  189,  150,
+ /*   890 */   151,  152,  247,  248,   76,   16,   19,  247,  248,  113,
+ /*   900 */   189,   24,  257,  211,  212,  189,   26,   89,  262,  223,
+ /*   910 */    92,  225,   77,  189,   79,  129,   19,   53,  226,  248,
+ /*   920 */    43,   44,   45,   46,   47,   48,   49,   50,   51,   52,
+ /*   930 */    53,   54,   55,   56,   57,  236,   19,  271,  189,   99,
+ /*   940 */    43,   44,   45,   46,   47,   48,   49,   50,   51,   52,
+ /*   950 */    53,   54,   55,   56,   57,  115,   77,   59,   79,  119,
+ /*   960 */    43,   44,   45,   46,   47,   48,   49,   50,   51,   52,
+ /*   970 */    53,   54,   55,   56,   57,  259,   22,   23,  101,  102,
+ /*   980 */   103,  104,  105,  106,  107,  108,  109,  110,  111,   59,
+ /*   990 */   150,  151,  152,  158,   22,  244,   24,  246,  101,  102,
+ /*  1000 */   103,  104,  105,  106,  107,  108,  109,  110,  111,  285,
+ /*  1010 */   189,  189,  114,  115,  116,  200,  136,  137,  101,  102,
+ /*  1020 */   103,  104,  105,  106,  107,  108,  109,  110,  111,  230,
+ /*  1030 */   231,   59,  211,  212,  285,  105,  106,  189,   19,  141,
+ /*  1040 */   234,  235,  239,  113,  114,  115,  116,  226,  118,  234,
+ /*  1050 */   235,  189,  249,  247,  100,  189,  126,   23,  236,  107,
+ /*  1060 */    26,  189,  247,   44,   45,   46,   47,   48,   49,   50,
+ /*  1070 */    51,   52,   53,   54,   55,   56,   57,  211,  212,   59,
+ /*  1080 */   150,  233,  152,  211,  212,  133,   12,  115,  189,  189,
+ /*  1090 */   138,   19,   20,  300,   22,  233,   76,  304,  226,   11,
+ /*  1100 */   208,   27,   22,   23,  200,   19,   26,   87,   36,   89,
+ /*  1110 */   211,  212,   92,  300,  248,  189,   42,  304,  189,  250,
+ /*  1120 */   101,  102,  103,  104,  105,  106,  107,  108,  109,  110,
+ /*  1130 */   111,   59,  200,  233,  114,  115,  116,   63,  234,  235,
+ /*  1140 */   235,   19,   20,   71,   22,  300,  189,   73,  200,  304,
+ /*  1150 */   116,  247,  247,   81,  189,  200,  227,   26,   36,  234,
+ /*  1160 */   235,  203,  204,  143,  200,   26,  234,  235,  194,  200,
+ /*  1170 */    48,   99,  247,   66,  189,  141,  284,  105,  106,  247,
+ /*  1180 */   100,   59,  234,  235,  112,  259,  114,  115,  116,  234,
+ /*  1190 */   235,  119,   85,   71,  266,  247,  211,  212,  234,  235,
+ /*  1200 */   114,   94,  247,  234,  235,   12,  266,   85,  136,  137,
+ /*  1210 */   189,  247,   90,   26,  126,  127,  247,  189,   26,   22,
+ /*  1220 */    27,   99,  150,  151,  152,  153,  154,  105,  106,  189,
+ /*  1230 */   302,  303,  211,  212,  112,   42,  114,  115,  116,  211,
+ /*  1240 */   212,  119,  302,  303,   19,   20,  189,   22,  274,  189,
+ /*  1250 */    15,  144,  278,  189,   22,   23,   63,  189,  189,  203,
+ /*  1260 */   204,   36,  136,  137,  155,   24,  157,  143,  211,  212,
+ /*  1270 */   189,  140,  150,  151,  152,  153,  154,    0,    1,    2,
+ /*  1280 */   211,  212,    5,   46,   59,  161,  147,   10,   11,   12,
+ /*  1290 */    13,   14,  211,  212,   17,   60,   71,  189,  258,  189,
+ /*  1300 */    59,  189,  105,  106,  189,  189,  189,   30,  116,   32,
+ /*  1310 */    85,  124,  189,  251,  252,   90,  189,   40,  258,  211,
+ /*  1320 */   212,  211,  212,  189,   99,   26,  211,  212,  211,  212,
+ /*  1330 */   105,  106,  100,  141,  211,  212,  119,  112,  189,  114,
+ /*  1340 */   115,  116,   23,  189,  119,   26,  129,   70,  189,   31,
+ /*  1350 */   113,   19,   20,   24,   22,   78,  115,   39,   81,  189,
+ /*  1360 */   211,  212,   26,  189,   22,  211,  212,  189,   36,  189,
+ /*  1370 */   211,  212,  189,  189,   97,  150,  151,  152,  153,  154,
+ /*  1380 */   127,  211,  212,  189,  189,  211,  212,  189,  189,  211,
+ /*  1390 */   212,   59,  189,  189,  211,  212,   23,  189,   22,   26,
+ /*  1400 */    24,  189,  149,   71,  189,  211,  212,  189,  131,  211,
+ /*  1410 */   212,  189,  189,  136,  137,  211,  212,   85,  189,  211,
+ /*  1420 */   212,   59,   90,  211,  212,  292,  293,  118,  119,  211,
+ /*  1430 */   212,   99,   23,  211,  212,   26,  159,  105,  106,  189,
+ /*  1440 */   211,  212,  143,  150,  112,  152,  114,  115,  116,    1,
+ /*  1450 */     2,  119,   23,    5,   23,   26,  189,   26,   10,   11,
+ /*  1460 */    12,   13,   14,   83,   84,   17,  253,  189,  139,  189,
+ /*  1470 */    19,   20,  189,   22,  189,  189,  140,  115,   30,   59,
+ /*  1480 */    32,  139,  150,  151,  152,  153,  154,   36,   40,  211,
+ /*  1490 */   212,  211,  212,   59,  211,  212,  211,  212,    7,    8,
+ /*  1500 */    19,   20,  189,   22,  150,  189,  152,  231,  281,  189,
+ /*  1510 */    59,  189,   23,  189,  189,   26,  189,   36,   70,  189,
+ /*  1520 */    23,  237,   71,   26,  211,  212,   78,  211,  212,   81,
+ /*  1530 */   189,  211,  212,  211,  212,  115,  211,  212,  211,  212,
+ /*  1540 */    59,  211,  212,   23,   23,   97,   26,   26,   23,  115,
+ /*  1550 */    99,   26,   71,  189,  189,  189,  105,  106,  107,   23,
+ /*  1560 */   189,   23,   26,  112,   26,  114,  115,  116,  189,  309,
+ /*  1570 */   119,   23,   19,   20,   26,   22,  189,  211,  212,  131,
+ /*  1580 */    99,  189,  211,  212,  136,  137,  105,  106,  189,   36,
+ /*  1590 */   211,  212,  189,  112,  189,  114,  115,  116,  211,  212,
+ /*  1600 */   119,  150,  151,  152,  153,  154,  189,  159,   23,  250,
+ /*  1610 */   189,   26,   59,  189,  189,  189,  189,  189,  280,  189,
+ /*  1620 */   250,  189,  189,  238,   71,  189,  189,  250,  211,  212,
+ /*  1630 */   187,  150,  151,  152,  153,  154,  211,  212,  250,  290,
+ /*  1640 */   240,  211,  212,  211,  212,  254,  286,  209,  254,  241,
+ /*  1650 */   240,  254,   99,  286,  215,  220,  214,  244,  105,  106,
+ /*  1660 */   214,  214,  244,  273,  224,  112,  192,  114,  115,  116,
+ /*  1670 */    60,  290,  119,    5,  139,  196,  196,   38,   10,   11,
+ /*  1680 */    12,   13,   14,  238,  240,   17,  196,  148,  287,  287,
+ /*  1690 */   276,  113,   22,  147,  241,   43,  229,  241,   30,   18,
+ /*  1700 */    32,  232,  232,  150,  151,  152,  153,  154,   40,  232,
+ /*  1710 */   232,  196,   18,  195,  265,  265,  264,  241,  264,  196,
+ /*  1720 */   155,  229,  229,  241,  241,  241,  195,   62,  196,  195,
+ /*  1730 */    22,  113,  216,  196,  222,  195,  195,  282,   70,  196,
+ /*  1740 */   283,  213,  216,  213,   64,   22,   78,  124,  219,   81,
+ /*  1750 */   162,  111,  219,  142,  256,  213,  113,  255,  213,  256,
+ /*  1760 */   216,  303,  215,  213,  213,   97,  255,  213,  216,  275,
+ /*  1770 */   275,  222,  216,  256,  255,  196,   91,   82,  256,  255,
+ /*  1780 */   308,  308,  146,   22,  143,  196,  155,  260,   25,  145,
+ /*  1790 */   144,  199,   26,  198,   13,  190,  190,    6,  293,  131,
+ /*  1800 */   188,  188,  245,  244,  136,  137,  245,  243,  242,  241,
+ /*  1810 */   188,  202,  208,  217,  217,  260,  208,    4,  202,    3,
+ /*  1820 */    22,  202,  208,  208,  160,   15,  209,  159,  270,  209,
+ /*  1830 */    98,   16,  272,  208,   23,   23,  137,  148,  128,   20,
+ /*  1840 */   140,   24,   16,  142,    1,  140,  149,  128,   61,   53,
+ /*  1850 */   148,   37,   53,   53,   53,  128,  114,   34,  296,  296,
+ /*  1860 */   139,    1,    5,   22,  113,  158,   26,   75,   41,  139,
+ /*  1870 */    68,   68,  113,   24,   20,   19,  129,  123,   23,   96,
+ /*  1880 */    22,   22,   37,   22,   22,   67,   22,   67,   59,   24,
+ /*  1890 */    23,   28,   67,  147,   22,   26,   23,   23,   23,   23,
+ /*  1900 */    22,   24,   23,   22,   24,   23,  139,   23,  114,   22,
+ /*  1910 */   141,   26,   88,   75,   86,   44,   23,   34,   22,   75,
+ /*  1920 */    34,   24,   34,   34,   34,   93,   34,   26,   26,   34,
+ /*  1930 */    23,   23,   23,   23,   23,   11,   23,   22,   26,   22,
+ /*  1940 */    22,  133,   23,   23,   22,   22,  139,   26,  139,   23,
+ /*  1950 */    15,    1,    1,  310,  310,  310,  310,  310,  310,  310,
+ /*  1960 */   139,  139,  310,  310,  310,  310,  310,  310,  310,  310,
+ /*  1970 */   310,  310,  310,  310,  310,  310,  310,  310,  310,  310,
+ /*  1980 */   310,  310,  310,  310,  310,  310,  310,  310,  310,  310,
+ /*  1990 */   310,  310,  310,  310,  310,  310,  310,  310,  310,  310,
+ /*  2000 */   310,  310,  310,  310,  310,  310,  310,  310,  310,  310,
+ /*  2010 */   310,  310,  310,  310,  310,  310,  310,  310,  310,  310,
+ /*  2020 */   310,  310,  310,  310,  310,  310,  310,  310,  310,  310,
+ /*  2030 */   310,  310,  310,  310,  310,  310,  310,  310,  310,  310,
+ /*  2040 */   310,  310,  310,  310,  310,  310,  310,  310,  310,  310,
+ /*  2050 */   310,  310,  310,  310,  310,  310,  310,  310,  310,  310,
+ /*  2060 */   310,  310,  310,  310,  310,  310,  310,  310,  310,  310,
+ /*  2070 */   310,  310,  310,  310,  310,  310,  310,  310,  310,  310,
+ /*  2080 */   310,  310,  310,  310,  310,  310,  310,  310,  310,  310,
+ /*  2090 */   310,  310,  310,  310,  310,  310,  310,  310,  310,  310,
+ /*  2100 */   310,  310,  310,  310,  310,  310,  310,  310,  310,  310,
+ /*  2110 */   310,  310,  310,  310,  310,  310,  310,  310,  310,  310,
+ /*  2120 */   310,  310,  310,  310,  310,  310,  310,  310,  310,  310,
+ /*  2130 */   310,  310,  310,  310,  310,  310,  310,  310,  310,  310,
+ /*  2140 */   310,  310,  310,
 };
-#define YY_SHIFT_COUNT    (542)
+#define YY_SHIFT_COUNT    (552)
 #define YY_SHIFT_MIN      (0)
-#define YY_SHIFT_MAX      (1908)
+#define YY_SHIFT_MAX      (1951)
 static const unsigned short int yy_shift_ofst[] = {
- /*     0 */  1350, 1149, 1531,  939,  939,  548,  996, 1150, 1236, 1322,
- /*    10 */  1322, 1322,  334,    0,    0,  178,  777, 1322, 1322, 1322,
- /*    20 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322,
- /*    30 */   991,  991, 1125, 1125,  447,  597,  548,  548,  548,  548,
- /*    40 */   548,  548,   40,  108,  217,  284,  323,  390,  429,  496,
- /*    50 */   535,  602,  641,  757,  777,  777,  777,  777,  777,  777,
- /*    60 */   777,  777,  777,  777,  777,  777,  777,  777,  777,  777,
- /*    70 */   777,  777,  796,  777,  887,  900,  900, 1300, 1322, 1322,
- /*    80 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322,
- /*    90 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322,
- /*   100 */  1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322,
- /*   110 */  1418, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322, 1322,
- /*   120 */  1322, 1322, 1322, 1322,  147,  254,  254,  254,  254,  254,
- /*   130 */    84,  185,   66,  853,  958, 1121,  853,   92,   92,  853,
- /*   140 */   321,  321,  321,  321,  325,  350,  350,  461,  150, 1913,
- /*   150 */  1913,  285,  285,  285,  236,  184,  349,  184,  184,  712,
- /*   160 */   712,  433,  553,  771,  899,  853,  853,  853,  853,  853,
- /*   170 */   853,  853,  853,  853,  853,  853,  853,  853,  853,  853,
- /*   180 */   853,  853,  853,  853,  853,  853,   46,   46,  853,  113,
- /*   190 */   223,  223, 1183, 1183, 1127, 1142, 1913, 1913, 1913,  459,
- /*   200 */   514,  514,  653,  495,  657,  305,  705,  560,  622,  776,
- /*   210 */   853,  853,  853,  853,  853,  853,  853,  853,  853,  545,
- /*   220 */   853,  853,  853,  853,  853,  853,  853,  853,  853,  853,
- /*   230 */   853,  853, 1002, 1002, 1002,  853,  853,  853,  853, 1111,
- /*   240 */   853,  853,  853, 1006, 1109,  853,  853, 1168,  853,  853,
- /*   250 */   853,  853,  853,  853,  853,  853,  845, 1164,  738,  953,
- /*   260 */   953,  953,  953, 1196,  738,  738,   45,   96,  964,  179,
- /*   270 */   580,  907,  907, 1073,  580,  580, 1073,  498,  388, 1268,
- /*   280 */  1187, 1187, 1187,  907, 1170, 1170, 1058, 1180,  328, 1219,
- /*   290 */  1597, 1521, 1521, 1625, 1625, 1521, 1524, 1560, 1650, 1630,
- /*   300 */  1530, 1661, 1661, 1661, 1661, 1521, 1667, 1530, 1530, 1560,
- /*   310 */  1650, 1630, 1630, 1530, 1521, 1667, 1543, 1636, 1521, 1667,
- /*   320 */  1681, 1521, 1667, 1521, 1667, 1681, 1596, 1596, 1596, 1649,
- /*   330 */  1681, 1596, 1594, 1596, 1649, 1596, 1596, 1562, 1681, 1611,
- /*   340 */  1611, 1681, 1585, 1617, 1585, 1617, 1585, 1617, 1585, 1617,
- /*   350 */  1521, 1647, 1647, 1659, 1659, 1601, 1606, 1726, 1521, 1600,
- /*   360 */  1601, 1612, 1614, 1530, 1732, 1733, 1754, 1754, 1764, 1764,
- /*   370 */  1764, 1913, 1913, 1913, 1913, 1913, 1913, 1913, 1913, 1913,
- /*   380 */  1913, 1913, 1913, 1913, 1913, 1913,  673,  901,  283,  740,
- /*   390 */   707,  973,  655, 1247, 1048, 1097, 1190, 1306, 1263, 1383,
- /*   400 */  1395, 1432, 1469, 1473, 1497, 1279, 1200, 1323, 1075, 1286,
- /*   410 */  1536, 1608, 1332, 1609, 1175, 1225, 1610, 1615, 1309, 1361,
- /*   420 */  1777, 1784, 1766, 1633, 1778, 1696, 1779, 1771, 1773, 1662,
- /*   430 */  1652, 1673, 1776, 1663, 1782, 1664, 1787, 1804, 1668, 1660,
- /*   440 */  1682, 1748, 1774, 1666, 1757, 1760, 1761, 1763, 1691, 1706,
- /*   450 */  1785, 1683, 1820, 1817, 1801, 1713, 1669, 1758, 1802, 1759,
- /*   460 */  1755, 1788, 1694, 1721, 1809, 1814, 1816, 1709, 1716, 1818,
- /*   470 */  1772, 1819, 1821, 1815, 1822, 1775, 1823, 1824, 1780, 1808,
- /*   480 */  1825, 1704, 1828, 1829, 1830, 1831, 1832, 1833, 1835, 1836,
- /*   490 */  1838, 1837, 1839, 1718, 1841, 1842, 1750, 1834, 1844, 1728,
- /*   500 */  1843, 1840, 1845, 1846, 1847, 1783, 1795, 1786, 1848, 1798,
- /*   510 */  1789, 1849, 1852, 1854, 1853, 1858, 1859, 1855, 1863, 1843,
- /*   520 */  1864, 1865, 1867, 1868, 1869, 1870, 1856, 1883, 1874, 1875,
- /*   530 */  1876, 1877, 1879, 1880, 1872, 1781, 1767, 1768, 1769, 1770,
- /*   540 */  1885, 1888, 1908,
+ /*     0 */  1448, 1277, 1668, 1072, 1072,  340, 1122, 1225, 1332, 1481,
+ /*    10 */  1481, 1481,  335,    0,    0,  180,  897, 1481, 1481, 1481,
+ /*    20 */  1481, 1481, 1481, 1481, 1481, 1481, 1481, 1481, 1481, 1481,
+ /*    30 */   930,  930, 1020, 1020,  290,    1,  340,  340,  340,  340,
+ /*    40 */   340,  340,   40,  110,  219,  288,  327,  396,  435,  504,
+ /*    50 */   543,  612,  651,  720,  877,  897,  897,  897,  897,  897,
+ /*    60 */   897,  897,  897,  897,  897,  897,  897,  897,  897,  897,
+ /*    70 */   897,  897,  897,  917,  897, 1019,  763,  763, 1451, 1481,
+ /*    80 */  1481, 1481, 1481, 1481, 1481, 1481, 1481, 1481, 1481, 1481,
+ /*    90 */  1481, 1481, 1481, 1481, 1481, 1481, 1481, 1481, 1481, 1481,
+ /*   100 */  1481, 1481, 1481, 1481, 1481, 1481, 1481, 1481, 1481, 1481,
+ /*   110 */  1481, 1481, 1553, 1481, 1481, 1481, 1481, 1481, 1481, 1481,
+ /*   120 */  1481, 1481, 1481, 1481, 1481, 1481,  147,  258,  258,  258,
+ /*   130 */   258,  258,   79,   65,   84,  449,   19,  786,  449,  636,
+ /*   140 */   636,  449,  880,  880,  880,  880,  113,  142,  142,  472,
+ /*   150 */   150, 1962, 1962,  399,  399,  399,   93,  237,  341,  237,
+ /*   160 */   237, 1074, 1074,  437,  350,  704, 1080,  449,  449,  449,
+ /*   170 */   449,  449,  449,  449,  449,  449,  449,  449,  449,  449,
+ /*   180 */   449,  449,  449,  449,  449,  449,  449,  449,  818,  818,
+ /*   190 */   449, 1088,  217,  217,  734,  734, 1124, 1126, 1962, 1962,
+ /*   200 */  1962,  739,  840,  840,  453,  454,  511,  187,  563,  570,
+ /*   210 */   898,  669,  449,  449,  449,  449,  449,  449,  449,  449,
+ /*   220 */   449,  670,  449,  449,  449,  449,  449,  449,  449,  449,
+ /*   230 */   449,  449,  449,  449,  674,  674,  674,  449,  449,  449,
+ /*   240 */   449, 1034,  449,  449,  449,  972, 1107,  449,  449, 1193,
+ /*   250 */   449,  449,  449,  449,  449,  449,  449,  449,  260,  177,
+ /*   260 */   489, 1241, 1241, 1241, 1241, 1192,  489,  489,  952, 1197,
+ /*   270 */   625, 1235, 1131,  181,  181, 1086, 1139, 1131, 1086, 1187,
+ /*   280 */  1319, 1237, 1318, 1318, 1318,  181, 1299, 1299, 1109, 1336,
+ /*   290 */   549, 1376, 1610, 1535, 1535, 1639, 1639, 1535, 1539, 1578,
+ /*   300 */  1670, 1546, 1652, 1546, 1681, 1681, 1681, 1681, 1535, 1694,
+ /*   310 */  1546, 1546, 1578, 1670, 1652, 1546, 1652, 1546, 1535, 1694,
+ /*   320 */  1565, 1665, 1535, 1694, 1708, 1535, 1694, 1535, 1694, 1708,
+ /*   330 */  1618, 1618, 1618, 1680, 1723, 1723, 1708, 1618, 1623, 1618,
+ /*   340 */  1680, 1618, 1618, 1588, 1708, 1640, 1640, 1708, 1611, 1643,
+ /*   350 */  1611, 1643, 1611, 1643, 1611, 1643, 1535, 1685, 1685, 1695,
+ /*   360 */  1695, 1636, 1641, 1761, 1535, 1631, 1636, 1644, 1646, 1546,
+ /*   370 */  1763, 1766, 1781, 1781, 1791, 1791, 1791, 1962, 1962, 1962,
+ /*   380 */  1962, 1962, 1962, 1962, 1962, 1962, 1962, 1962, 1962, 1962,
+ /*   390 */  1962, 1962,  308,  835,  954, 1232,  879,  715,  728, 1373,
+ /*   400 */   864, 1329, 1253, 1409,  297, 1431, 1489, 1497, 1520, 1521,
+ /*   410 */  1525, 1362, 1309, 1491, 1217, 1420, 1429, 1536, 1380, 1538,
+ /*   420 */  1293, 1354, 1548, 1585, 1434, 1342, 1813, 1816, 1798, 1664,
+ /*   430 */  1810, 1732, 1815, 1811, 1812, 1699, 1689, 1710, 1817, 1700,
+ /*   440 */  1819, 1701, 1826, 1843, 1705, 1697, 1719, 1787, 1814, 1702,
+ /*   450 */  1796, 1799, 1800, 1801, 1727, 1742, 1823, 1721, 1860, 1857,
+ /*   460 */  1841, 1751, 1707, 1802, 1840, 1803, 1792, 1827, 1730, 1759,
+ /*   470 */  1849, 1854, 1856, 1747, 1754, 1858, 1818, 1859, 1861, 1855,
+ /*   480 */  1862, 1820, 1829, 1865, 1783, 1863, 1864, 1825, 1845, 1867,
+ /*   490 */  1746, 1872, 1873, 1874, 1875, 1869, 1876, 1878, 1877, 1879,
+ /*   500 */  1881, 1880, 1767, 1882, 1884, 1794, 1883, 1887, 1769, 1885,
+ /*   510 */  1886, 1888, 1889, 1890, 1824, 1838, 1828, 1871, 1844, 1832,
+ /*   520 */  1892, 1893, 1896, 1897, 1901, 1902, 1895, 1907, 1885, 1908,
+ /*   530 */  1909, 1910, 1911, 1912, 1913, 1915, 1924, 1917, 1918, 1919,
+ /*   540 */  1920, 1922, 1923, 1921, 1808, 1807, 1809, 1821, 1822, 1926,
+ /*   550 */  1935, 1950, 1951,
 };
-#define YY_REDUCE_COUNT (385)
-#define YY_REDUCE_MIN   (-256)
-#define YY_REDUCE_MAX   (1590)
+#define YY_REDUCE_COUNT (391)
+#define YY_REDUCE_MIN   (-262)
+#define YY_REDUCE_MAX   (1625)
 static const short yy_reduce_ofst[] = {
- /*     0 */   880, -121,  269,  528,  933, -119, -187, -185, -182, -180,
- /*    10 */  -176, -174,  -62,  -46,  131, -248, -133,  407,  568,  700,
- /*    20 */   704,  278,  706,  824,  542,  830,  948,  773,  943,  946,
- /*    30 */    71,  650,  211,  267,  826,  272,  676,  732,  885,  976,
- /*    40 */   984,  992, -256, -256, -256, -256, -256, -256, -256, -256,
- /*    50 */  -256, -256, -256, -256, -256, -256, -256, -256, -256, -256,
- /*    60 */  -256, -256, -256, -256, -256, -256, -256, -256, -256, -256,
- /*    70 */  -256, -256, -256, -256, -256, -256, -256,  989, 1065, 1070,
- /*    80 */  1072, 1078, 1082, 1084, 1103, 1118, 1147, 1156, 1160, 1167,
- /*    90 */  1185, 1191, 1220, 1237, 1254, 1256, 1266, 1272, 1281, 1291,
- /*   100 */  1293, 1296, 1299, 1301, 1307, 1337, 1340, 1342, 1347, 1366,
- /*   110 */  1368, 1371, 1373, 1377, 1385, 1387, 1398, 1401, 1404, 1406,
- /*   120 */  1411, 1413, 1415, 1430, -256, -256, -256, -256, -256, -256,
- /*   130 */  -256, -256, -256, -172,  508, -213,   57, -163,  -25,  593,
- /*   140 */    69,  486,   69,  486, -200,  573,  722, -256, -256, -256,
- /*   150 */  -256, -141, -141, -141, -105, -161, -167,  157,  212,  405,
- /*   160 */   530,  220,  233,  735,  735,  115,  318,  406,  612,  541,
- /*   170 */  -166,  441,  688,  794,  629,  368,  741,  775,  867,  797,
- /*   180 */   871,  842, -186, 1000,  858,  949,  379,  783,   70,  296,
- /*   190 */   821,  903,  924, 1044,  651,  282, 1014, 1060,  937, -195,
- /*   200 */  -177,  413,  439,  511,  566,  787,  827,  848,  898,  945,
- /*   210 */  1062, 1074, 1102, 1110, 1202, 1204, 1209, 1211, 1215,  529,
- /*   220 */  1221, 1224, 1240, 1246, 1255, 1257, 1269, 1270, 1273, 1274,
- /*   230 */  1275, 1280, 1205, 1251, 1294, 1310, 1317, 1326, 1327, 1124,
- /*   240 */  1331, 1338, 1339, 1290, 1181, 1346, 1351, 1265, 1352,  787,
- /*   250 */  1353, 1367, 1378, 1386, 1392, 1397, 1241, 1312, 1356, 1345,
- /*   260 */  1357, 1358, 1359, 1124, 1356, 1356, 1364, 1396, 1433, 1341,
- /*   270 */  1381, 1376, 1379, 1354, 1391, 1405, 1362, 1429, 1423, 1431,
- /*   280 */  1434, 1435, 1437, 1399, 1410, 1412, 1382, 1417, 1420, 1466,
- /*   290 */  1372, 1467, 1468, 1380, 1384, 1475, 1394, 1414, 1416, 1448,
- /*   300 */  1440, 1451, 1452, 1453, 1454, 1490, 1493, 1449, 1455, 1427,
- /*   310 */  1436, 1464, 1465, 1456, 1498, 1502, 1419, 1421, 1507, 1509,
- /*   320 */  1491, 1510, 1513, 1514, 1516, 1496, 1500, 1501, 1503, 1499,
- /*   330 */  1505, 1504, 1508, 1506, 1511, 1512, 1515, 1424, 1517, 1457,
- /*   340 */  1460, 1519, 1474, 1482, 1483, 1485, 1486, 1488, 1489, 1492,
- /*   350 */  1541, 1438, 1441, 1494, 1495, 1518, 1520, 1487, 1555, 1481,
- /*   360 */  1522, 1523, 1526, 1528, 1561, 1566, 1580, 1581, 1586, 1587,
- /*   370 */  1588, 1478, 1484, 1525, 1575, 1570, 1572, 1573, 1574, 1582,
- /*   380 */  1568, 1569, 1578, 1579, 1583, 1590,
+ /*     0 */   490, -122,  545,  645,  650, -120, -189, -187, -184, -182,
+ /*    10 */  -178, -176,   45,   30,  200, -251, -134,  390,  392,  521,
+ /*    20 */   523,  213,  692,  821,  284,  589,  872,  666,  671,  866,
+ /*    30 */    71,  111,  273,  389,  686,  815,  904,  932,  948,  955,
+ /*    40 */   964,  969, -259, -259, -259, -259, -259, -259, -259, -259,
+ /*    50 */  -259, -259, -259, -259, -259, -259, -259, -259, -259, -259,
+ /*    60 */  -259, -259, -259, -259, -259, -259, -259, -259, -259, -259,
+ /*    70 */  -259, -259, -259, -259, -259, -259, -259, -259,  428,  430,
+ /*    80 */   899,  985, 1021, 1028, 1057, 1069, 1081, 1108, 1110, 1115,
+ /*    90 */  1117, 1123, 1149, 1154, 1159, 1170, 1174, 1178, 1183, 1194,
+ /*   100 */  1198, 1204, 1208, 1212, 1218, 1222, 1229, 1278, 1280, 1283,
+ /*   110 */  1285, 1313, 1316, 1320, 1322, 1325, 1327, 1330, 1366, 1371,
+ /*   120 */  1379, 1387, 1417, 1425, 1430, 1432, -259, -259, -259, -259,
+ /*   130 */  -259, -259, -259, -259, -259,  557,  974, -214, -174,   -9,
+ /*   140 */   431, -124,  806,  925,  806,  925,  251,  928,  940, -259,
+ /*   150 */  -259, -259, -259, -198, -198, -198,  127, -186, -168,  212,
+ /*   160 */   646,  617,  799, -262,  555,  220,  220,  491,  605, 1040,
+ /*   170 */  1060,  699,  -11,  600,  848,  862,  345, -129,  724,  -91,
+ /*   180 */   158,  749,  716,  900,  304,  822,  929,  926,  499,  793,
+ /*   190 */   322,  892,  813,  845,  958, 1056,  751,  905, 1133, 1062,
+ /*   200 */   803, -210, -185, -179, -148, -167,  -89,  121,  274,  281,
+ /*   210 */   320,  336,  439,  663,  711,  957,  965, 1064, 1068, 1112,
+ /*   220 */  1116, -196, 1127, 1134, 1180, 1184, 1195, 1199, 1203, 1215,
+ /*   230 */  1223, 1250, 1267, 1286,  205,  422,  638, 1324, 1341, 1364,
+ /*   240 */  1365, 1213, 1392, 1399, 1403,  869, 1260, 1405, 1421, 1276,
+ /*   250 */  1424,  121, 1426, 1427, 1428, 1433, 1436, 1437, 1227, 1338,
+ /*   260 */  1284, 1359, 1370, 1377, 1388, 1213, 1284, 1284, 1385, 1438,
+ /*   270 */  1443, 1349, 1400, 1391, 1394, 1360, 1408, 1410, 1367, 1439,
+ /*   280 */  1440, 1435, 1442, 1446, 1447, 1397, 1413, 1418, 1390, 1444,
+ /*   290 */  1445, 1474, 1381, 1479, 1480, 1401, 1402, 1490, 1414, 1449,
+ /*   300 */  1452, 1453, 1467, 1456, 1469, 1470, 1477, 1478, 1515, 1518,
+ /*   310 */  1476, 1482, 1450, 1454, 1492, 1483, 1493, 1484, 1523, 1531,
+ /*   320 */  1457, 1455, 1532, 1534, 1516, 1537, 1540, 1543, 1541, 1526,
+ /*   330 */  1528, 1530, 1542, 1512, 1529, 1533, 1544, 1545, 1547, 1550,
+ /*   340 */  1549, 1551, 1554, 1458, 1552, 1494, 1495, 1556, 1498, 1502,
+ /*   350 */  1503, 1511, 1517, 1519, 1522, 1524, 1579, 1472, 1473, 1527,
+ /*   360 */  1555, 1557, 1559, 1558, 1589, 1560, 1561, 1564, 1566, 1568,
+ /*   370 */  1592, 1595, 1605, 1606, 1612, 1613, 1622, 1562, 1563, 1505,
+ /*   380 */  1609, 1604, 1608, 1614, 1615, 1616, 1596, 1597, 1617, 1620,
+ /*   390 */  1625, 1619,
 };
 static const YYACTIONTYPE yy_default[] = {
- /*     0 */  1554, 1554, 1554, 1392, 1171, 1278, 1171, 1171, 1171, 1392,
- /*    10 */  1392, 1392, 1171, 1308, 1308, 1445, 1202, 1171, 1171, 1171,
- /*    20 */  1171, 1171, 1171, 1171, 1171, 1171, 1171, 1391, 1171, 1171,
- /*    30 */  1171, 1171, 1475, 1475, 1171, 1171, 1171, 1171, 1171, 1171,
- /*    40 */  1171, 1171, 1171, 1317, 1171, 1171, 1171, 1171, 1171, 1393,
- /*    50 */  1394, 1171, 1171, 1171, 1444, 1446, 1409, 1327, 1326, 1325,
- /*    60 */  1324, 1427, 1295, 1322, 1315, 1319, 1387, 1388, 1386, 1390,
- /*    70 */  1394, 1393, 1171, 1318, 1358, 1372, 1357, 1171, 1171, 1171,
- /*    80 */  1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171,
- /*    90 */  1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171,
- /*   100 */  1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171,
- /*   110 */  1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171,
- /*   120 */  1171, 1171, 1171, 1171, 1366, 1371, 1377, 1370, 1367, 1360,
- /*   130 */  1359, 1361, 1362, 1171, 1192, 1242, 1171, 1171, 1171, 1171,
- /*   140 */  1463, 1462, 1171, 1171, 1202, 1352, 1351, 1363, 1364, 1374,
- /*   150 */  1373, 1452, 1510, 1509, 1410, 1171, 1171, 1171, 1171, 1171,
- /*   160 */  1171, 1475, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171,
- /*   170 */  1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171,
- /*   180 */  1171, 1171, 1171, 1171, 1171, 1171, 1475, 1475, 1171, 1202,
- /*   190 */  1475, 1475, 1198, 1198, 1302, 1171, 1458, 1278, 1269, 1171,
- /*   200 */  1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171,
- /*   210 */  1171, 1171, 1171, 1449, 1447, 1171, 1171, 1171, 1171, 1171,
- /*   220 */  1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171,
- /*   230 */  1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171,
- /*   240 */  1171, 1171, 1171, 1274, 1171, 1171, 1171, 1171, 1171, 1171,
- /*   250 */  1171, 1171, 1171, 1171, 1171, 1504, 1171, 1422, 1256, 1274,
- /*   260 */  1274, 1274, 1274, 1276, 1257, 1255, 1268, 1203, 1178, 1546,
- /*   270 */  1321, 1297, 1297, 1543, 1321, 1321, 1543, 1217, 1524, 1214,
- /*   280 */  1308, 1308, 1308, 1297, 1302, 1302, 1389, 1275, 1268, 1171,
- /*   290 */  1546, 1283, 1283, 1545, 1545, 1283, 1410, 1330, 1336, 1245,
- /*   300 */  1321, 1251, 1251, 1251, 1251, 1283, 1189, 1321, 1321, 1330,
- /*   310 */  1336, 1245, 1245, 1321, 1283, 1189, 1426, 1540, 1283, 1189,
- /*   320 */  1400, 1283, 1189, 1283, 1189, 1400, 1243, 1243, 1243, 1232,
- /*   330 */  1400, 1243, 1217, 1243, 1232, 1243, 1243, 1493, 1400, 1404,
- /*   340 */  1404, 1400, 1301, 1296, 1301, 1296, 1301, 1296, 1301, 1296,
- /*   350 */  1283, 1485, 1485, 1311, 1311, 1316, 1302, 1395, 1283, 1171,
- /*   360 */  1316, 1314, 1312, 1321, 1195, 1235, 1507, 1507, 1503, 1503,
- /*   370 */  1503, 1551, 1551, 1458, 1519, 1202, 1202, 1202, 1202, 1519,
- /*   380 */  1219, 1219, 1203, 1203, 1202, 1519, 1171, 1171, 1171, 1171,
- /*   390 */  1171, 1171, 1514, 1171, 1411, 1287, 1171, 1171, 1171, 1171,
- /*   400 */  1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171,
- /*   410 */  1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1341,
- /*   420 */  1171, 1174, 1455, 1171, 1171, 1453, 1171, 1171, 1171, 1171,
- /*   430 */  1171, 1171, 1288, 1171, 1171, 1171, 1171, 1171, 1171, 1171,
- /*   440 */  1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171,
- /*   450 */  1171, 1542, 1171, 1171, 1171, 1171, 1171, 1171, 1425, 1424,
- /*   460 */  1171, 1171, 1285, 1171, 1171, 1171, 1171, 1171, 1171, 1171,
- /*   470 */  1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171,
- /*   480 */  1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171,
- /*   490 */  1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171,
- /*   500 */  1313, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171,
- /*   510 */  1171, 1171, 1171, 1171, 1171, 1490, 1303, 1171, 1171, 1533,
- /*   520 */  1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171, 1171,
- /*   530 */  1171, 1171, 1171, 1171, 1528, 1259, 1343, 1171, 1342, 1346,
- /*   540 */  1171, 1183, 1171,
+ /*     0 */  1575, 1575, 1575, 1411, 1188, 1297, 1188, 1188, 1188, 1411,
+ /*    10 */  1411, 1411, 1188, 1327, 1327, 1464, 1219, 1188, 1188, 1188,
+ /*    20 */  1188, 1188, 1188, 1188, 1188, 1188, 1188, 1410, 1188, 1188,
+ /*    30 */  1188, 1188, 1494, 1494, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*    40 */  1188, 1188, 1188, 1336, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*    50 */  1412, 1413, 1188, 1188, 1188, 1463, 1465, 1428, 1346, 1345,
+ /*    60 */  1344, 1343, 1446, 1314, 1341, 1334, 1338, 1406, 1407, 1405,
+ /*    70 */  1409, 1413, 1412, 1188, 1337, 1377, 1391, 1376, 1188, 1188,
+ /*    80 */  1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*    90 */  1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*   100 */  1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*   110 */  1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*   120 */  1188, 1188, 1188, 1188, 1188, 1188, 1385, 1390, 1396, 1389,
+ /*   130 */  1386, 1379, 1378, 1380, 1381, 1188, 1209, 1261, 1188, 1188,
+ /*   140 */  1188, 1188, 1482, 1481, 1188, 1188, 1219, 1371, 1370, 1382,
+ /*   150 */  1383, 1393, 1392, 1471, 1529, 1528, 1429, 1188, 1188, 1188,
+ /*   160 */  1188, 1188, 1188, 1494, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*   170 */  1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*   180 */  1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1494, 1494,
+ /*   190 */  1188, 1219, 1494, 1494, 1215, 1215, 1321, 1188, 1477, 1297,
+ /*   200 */  1288, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*   210 */  1188, 1188, 1188, 1188, 1188, 1468, 1466, 1188, 1188, 1188,
+ /*   220 */  1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*   230 */  1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*   240 */  1188, 1188, 1188, 1188, 1188, 1293, 1188, 1188, 1188, 1188,
+ /*   250 */  1188, 1188, 1188, 1188, 1188, 1188, 1188, 1523, 1188, 1441,
+ /*   260 */  1275, 1293, 1293, 1293, 1293, 1295, 1276, 1274, 1287, 1220,
+ /*   270 */  1195, 1567, 1294, 1316, 1316, 1564, 1340, 1294, 1564, 1236,
+ /*   280 */  1545, 1231, 1327, 1327, 1327, 1316, 1321, 1321, 1408, 1294,
+ /*   290 */  1287, 1188, 1567, 1302, 1302, 1566, 1566, 1302, 1429, 1349,
+ /*   300 */  1355, 1340, 1264, 1340, 1270, 1270, 1270, 1270, 1302, 1206,
+ /*   310 */  1340, 1340, 1349, 1355, 1264, 1340, 1264, 1340, 1302, 1206,
+ /*   320 */  1445, 1561, 1302, 1206, 1419, 1302, 1206, 1302, 1206, 1419,
+ /*   330 */  1262, 1262, 1262, 1251, 1188, 1188, 1419, 1262, 1236, 1262,
+ /*   340 */  1251, 1262, 1262, 1512, 1419, 1423, 1423, 1419, 1320, 1315,
+ /*   350 */  1320, 1315, 1320, 1315, 1320, 1315, 1302, 1504, 1504, 1330,
+ /*   360 */  1330, 1335, 1321, 1414, 1302, 1188, 1335, 1333, 1331, 1340,
+ /*   370 */  1212, 1254, 1526, 1526, 1522, 1522, 1522, 1572, 1572, 1477,
+ /*   380 */  1538, 1219, 1219, 1219, 1219, 1538, 1238, 1238, 1220, 1220,
+ /*   390 */  1219, 1538, 1188, 1188, 1188, 1188, 1188, 1188, 1533, 1188,
+ /*   400 */  1430, 1306, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*   410 */  1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*   420 */  1188, 1188, 1188, 1188, 1188, 1360, 1188, 1191, 1474, 1188,
+ /*   430 */  1188, 1472, 1188, 1188, 1188, 1188, 1188, 1188, 1307, 1188,
+ /*   440 */  1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*   450 */  1188, 1188, 1188, 1188, 1188, 1188, 1188, 1563, 1188, 1188,
+ /*   460 */  1188, 1188, 1188, 1188, 1444, 1443, 1188, 1188, 1304, 1188,
+ /*   470 */  1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*   480 */  1188, 1188, 1234, 1188, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*   490 */  1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*   500 */  1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1332,
+ /*   510 */  1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*   520 */  1188, 1188, 1188, 1188, 1509, 1322, 1188, 1188, 1554, 1188,
+ /*   530 */  1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188, 1188,
+ /*   540 */  1188, 1188, 1188, 1549, 1278, 1362, 1188, 1361, 1365, 1188,
+ /*   550 */  1200, 1188, 1188,
 };
 /********** End of lemon-generated parsing tables *****************************/
 
@@ -155213,6 +160168,8 @@ static const YYCODETYPE yyFallback[] = {
    59,  /*     GROUPS => ID */
    59,  /*     OTHERS => ID */
    59,  /*       TIES => ID */
+   59,  /*  GENERATED => ID */
+   59,  /*     ALWAYS => ID */
    59,  /*    REINDEX => ID */
    59,  /*     RENAME => ID */
    59,  /*   CTIME_KW => ID */
@@ -155479,218 +160436,221 @@ static const char *const yyTokenName[] = {
   /*   92 */ "GROUPS",
   /*   93 */ "OTHERS",
   /*   94 */ "TIES",
-  /*   95 */ "REINDEX",
-  /*   96 */ "RENAME",
-  /*   97 */ "CTIME_KW",
-  /*   98 */ "ANY",
-  /*   99 */ "BITAND",
-  /*  100 */ "BITOR",
-  /*  101 */ "LSHIFT",
-  /*  102 */ "RSHIFT",
-  /*  103 */ "PLUS",
-  /*  104 */ "MINUS",
-  /*  105 */ "STAR",
-  /*  106 */ "SLASH",
-  /*  107 */ "REM",
-  /*  108 */ "CONCAT",
-  /*  109 */ "COLLATE",
-  /*  110 */ "BITNOT",
-  /*  111 */ "ON",
-  /*  112 */ "INDEXED",
-  /*  113 */ "STRING",
-  /*  114 */ "JOIN_KW",
-  /*  115 */ "CONSTRAINT",
-  /*  116 */ "DEFAULT",
-  /*  117 */ "NULL",
-  /*  118 */ "PRIMARY",
-  /*  119 */ "UNIQUE",
-  /*  120 */ "CHECK",
-  /*  121 */ "REFERENCES",
-  /*  122 */ "AUTOINCR",
-  /*  123 */ "INSERT",
-  /*  124 */ "DELETE",
-  /*  125 */ "UPDATE",
-  /*  126 */ "SET",
-  /*  127 */ "DEFERRABLE",
-  /*  128 */ "FOREIGN",
-  /*  129 */ "DROP",
-  /*  130 */ "UNION",
-  /*  131 */ "ALL",
-  /*  132 */ "EXCEPT",
-  /*  133 */ "INTERSECT",
-  /*  134 */ "SELECT",
-  /*  135 */ "VALUES",
-  /*  136 */ "DISTINCT",
-  /*  137 */ "DOT",
-  /*  138 */ "FROM",
-  /*  139 */ "JOIN",
-  /*  140 */ "USING",
-  /*  141 */ "ORDER",
-  /*  142 */ "GROUP",
-  /*  143 */ "HAVING",
-  /*  144 */ "LIMIT",
-  /*  145 */ "WHERE",
-  /*  146 */ "INTO",
-  /*  147 */ "NOTHING",
-  /*  148 */ "FLOAT",
-  /*  149 */ "BLOB",
-  /*  150 */ "INTEGER",
-  /*  151 */ "VARIABLE",
-  /*  152 */ "CASE",
-  /*  153 */ "WHEN",
-  /*  154 */ "THEN",
-  /*  155 */ "ELSE",
-  /*  156 */ "INDEX",
-  /*  157 */ "ALTER",
-  /*  158 */ "ADD",
-  /*  159 */ "WINDOW",
-  /*  160 */ "OVER",
-  /*  161 */ "FILTER",
-  /*  162 */ "COLUMN",
-  /*  163 */ "AGG_FUNCTION",
-  /*  164 */ "AGG_COLUMN",
-  /*  165 */ "TRUEFALSE",
-  /*  166 */ "ISNOT",
-  /*  167 */ "FUNCTION",
-  /*  168 */ "UMINUS",
-  /*  169 */ "UPLUS",
-  /*  170 */ "TRUTH",
-  /*  171 */ "REGISTER",
-  /*  172 */ "VECTOR",
-  /*  173 */ "SELECT_COLUMN",
-  /*  174 */ "IF_NULL_ROW",
-  /*  175 */ "ASTERISK",
-  /*  176 */ "SPAN",
-  /*  177 */ "SPACE",
-  /*  178 */ "ILLEGAL",
-  /*  179 */ "input",
-  /*  180 */ "cmdlist",
-  /*  181 */ "ecmd",
-  /*  182 */ "cmdx",
-  /*  183 */ "explain",
-  /*  184 */ "cmd",
-  /*  185 */ "transtype",
-  /*  186 */ "trans_opt",
-  /*  187 */ "nm",
-  /*  188 */ "savepoint_opt",
-  /*  189 */ "create_table",
-  /*  190 */ "create_table_args",
-  /*  191 */ "createkw",
-  /*  192 */ "temp",
-  /*  193 */ "ifnotexists",
-  /*  194 */ "dbnm",
-  /*  195 */ "columnlist",
-  /*  196 */ "conslist_opt",
-  /*  197 */ "table_options",
-  /*  198 */ "select",
-  /*  199 */ "columnname",
-  /*  200 */ "carglist",
-  /*  201 */ "typetoken",
-  /*  202 */ "typename",
-  /*  203 */ "signed",
-  /*  204 */ "plus_num",
-  /*  205 */ "minus_num",
-  /*  206 */ "scanpt",
-  /*  207 */ "scantok",
-  /*  208 */ "ccons",
-  /*  209 */ "term",
-  /*  210 */ "expr",
-  /*  211 */ "onconf",
-  /*  212 */ "sortorder",
-  /*  213 */ "autoinc",
-  /*  214 */ "eidlist_opt",
-  /*  215 */ "refargs",
-  /*  216 */ "defer_subclause",
-  /*  217 */ "refarg",
-  /*  218 */ "refact",
-  /*  219 */ "init_deferred_pred_opt",
-  /*  220 */ "conslist",
-  /*  221 */ "tconscomma",
-  /*  222 */ "tcons",
-  /*  223 */ "sortlist",
-  /*  224 */ "eidlist",
-  /*  225 */ "defer_subclause_opt",
-  /*  226 */ "orconf",
-  /*  227 */ "resolvetype",
-  /*  228 */ "raisetype",
-  /*  229 */ "ifexists",
-  /*  230 */ "fullname",
-  /*  231 */ "selectnowith",
-  /*  232 */ "oneselect",
-  /*  233 */ "wqlist",
-  /*  234 */ "multiselect_op",
-  /*  235 */ "distinct",
-  /*  236 */ "selcollist",
-  /*  237 */ "from",
-  /*  238 */ "where_opt",
-  /*  239 */ "groupby_opt",
-  /*  240 */ "having_opt",
-  /*  241 */ "orderby_opt",
-  /*  242 */ "limit_opt",
-  /*  243 */ "window_clause",
-  /*  244 */ "values",
-  /*  245 */ "nexprlist",
-  /*  246 */ "sclp",
-  /*  247 */ "as",
-  /*  248 */ "seltablist",
-  /*  249 */ "stl_prefix",
-  /*  250 */ "joinop",
-  /*  251 */ "indexed_opt",
-  /*  252 */ "on_opt",
-  /*  253 */ "using_opt",
-  /*  254 */ "exprlist",
-  /*  255 */ "xfullname",
-  /*  256 */ "idlist",
-  /*  257 */ "nulls",
-  /*  258 */ "with",
-  /*  259 */ "setlist",
-  /*  260 */ "insert_cmd",
-  /*  261 */ "idlist_opt",
-  /*  262 */ "upsert",
-  /*  263 */ "filter_over",
-  /*  264 */ "likeop",
-  /*  265 */ "between_op",
-  /*  266 */ "in_op",
-  /*  267 */ "paren_exprlist",
-  /*  268 */ "case_operand",
-  /*  269 */ "case_exprlist",
-  /*  270 */ "case_else",
-  /*  271 */ "uniqueflag",
-  /*  272 */ "collate",
-  /*  273 */ "vinto",
-  /*  274 */ "nmnum",
-  /*  275 */ "trigger_decl",
-  /*  276 */ "trigger_cmd_list",
-  /*  277 */ "trigger_time",
-  /*  278 */ "trigger_event",
-  /*  279 */ "foreach_clause",
-  /*  280 */ "when_clause",
-  /*  281 */ "trigger_cmd",
-  /*  282 */ "trnm",
-  /*  283 */ "tridxby",
-  /*  284 */ "database_kw_opt",
-  /*  285 */ "key_opt",
-  /*  286 */ "add_column_fullname",
-  /*  287 */ "kwcolumn_opt",
-  /*  288 */ "create_vtab",
-  /*  289 */ "vtabarglist",
-  /*  290 */ "vtabarg",
-  /*  291 */ "vtabargtoken",
-  /*  292 */ "lp",
-  /*  293 */ "anylist",
-  /*  294 */ "windowdefn_list",
-  /*  295 */ "windowdefn",
-  /*  296 */ "window",
-  /*  297 */ "frame_opt",
-  /*  298 */ "part_opt",
-  /*  299 */ "filter_clause",
-  /*  300 */ "over_clause",
-  /*  301 */ "range_or_rows",
-  /*  302 */ "frame_bound",
-  /*  303 */ "frame_bound_s",
-  /*  304 */ "frame_bound_e",
-  /*  305 */ "frame_exclude_opt",
-  /*  306 */ "frame_exclude",
+  /*   95 */ "GENERATED",
+  /*   96 */ "ALWAYS",
+  /*   97 */ "REINDEX",
+  /*   98 */ "RENAME",
+  /*   99 */ "CTIME_KW",
+  /*  100 */ "ANY",
+  /*  101 */ "BITAND",
+  /*  102 */ "BITOR",
+  /*  103 */ "LSHIFT",
+  /*  104 */ "RSHIFT",
+  /*  105 */ "PLUS",
+  /*  106 */ "MINUS",
+  /*  107 */ "STAR",
+  /*  108 */ "SLASH",
+  /*  109 */ "REM",
+  /*  110 */ "CONCAT",
+  /*  111 */ "COLLATE",
+  /*  112 */ "BITNOT",
+  /*  113 */ "ON",
+  /*  114 */ "INDEXED",
+  /*  115 */ "STRING",
+  /*  116 */ "JOIN_KW",
+  /*  117 */ "CONSTRAINT",
+  /*  118 */ "DEFAULT",
+  /*  119 */ "NULL",
+  /*  120 */ "PRIMARY",
+  /*  121 */ "UNIQUE",
+  /*  122 */ "CHECK",
+  /*  123 */ "REFERENCES",
+  /*  124 */ "AUTOINCR",
+  /*  125 */ "INSERT",
+  /*  126 */ "DELETE",
+  /*  127 */ "UPDATE",
+  /*  128 */ "SET",
+  /*  129 */ "DEFERRABLE",
+  /*  130 */ "FOREIGN",
+  /*  131 */ "DROP",
+  /*  132 */ "UNION",
+  /*  133 */ "ALL",
+  /*  134 */ "EXCEPT",
+  /*  135 */ "INTERSECT",
+  /*  136 */ "SELECT",
+  /*  137 */ "VALUES",
+  /*  138 */ "DISTINCT",
+  /*  139 */ "DOT",
+  /*  140 */ "FROM",
+  /*  141 */ "JOIN",
+  /*  142 */ "USING",
+  /*  143 */ "ORDER",
+  /*  144 */ "GROUP",
+  /*  145 */ "HAVING",
+  /*  146 */ "LIMIT",
+  /*  147 */ "WHERE",
+  /*  148 */ "INTO",
+  /*  149 */ "NOTHING",
+  /*  150 */ "FLOAT",
+  /*  151 */ "BLOB",
+  /*  152 */ "INTEGER",
+  /*  153 */ "VARIABLE",
+  /*  154 */ "CASE",
+  /*  155 */ "WHEN",
+  /*  156 */ "THEN",
+  /*  157 */ "ELSE",
+  /*  158 */ "INDEX",
+  /*  159 */ "ALTER",
+  /*  160 */ "ADD",
+  /*  161 */ "WINDOW",
+  /*  162 */ "OVER",
+  /*  163 */ "FILTER",
+  /*  164 */ "COLUMN",
+  /*  165 */ "AGG_FUNCTION",
+  /*  166 */ "AGG_COLUMN",
+  /*  167 */ "TRUEFALSE",
+  /*  168 */ "ISNOT",
+  /*  169 */ "FUNCTION",
+  /*  170 */ "UMINUS",
+  /*  171 */ "UPLUS",
+  /*  172 */ "TRUTH",
+  /*  173 */ "REGISTER",
+  /*  174 */ "VECTOR",
+  /*  175 */ "SELECT_COLUMN",
+  /*  176 */ "IF_NULL_ROW",
+  /*  177 */ "ASTERISK",
+  /*  178 */ "SPAN",
+  /*  179 */ "SPACE",
+  /*  180 */ "ILLEGAL",
+  /*  181 */ "input",
+  /*  182 */ "cmdlist",
+  /*  183 */ "ecmd",
+  /*  184 */ "cmdx",
+  /*  185 */ "explain",
+  /*  186 */ "cmd",
+  /*  187 */ "transtype",
+  /*  188 */ "trans_opt",
+  /*  189 */ "nm",
+  /*  190 */ "savepoint_opt",
+  /*  191 */ "create_table",
+  /*  192 */ "create_table_args",
+  /*  193 */ "createkw",
+  /*  194 */ "temp",
+  /*  195 */ "ifnotexists",
+  /*  196 */ "dbnm",
+  /*  197 */ "columnlist",
+  /*  198 */ "conslist_opt",
+  /*  199 */ "table_options",
+  /*  200 */ "select",
+  /*  201 */ "columnname",
+  /*  202 */ "carglist",
+  /*  203 */ "typetoken",
+  /*  204 */ "typename",
+  /*  205 */ "signed",
+  /*  206 */ "plus_num",
+  /*  207 */ "minus_num",
+  /*  208 */ "scanpt",
+  /*  209 */ "scantok",
+  /*  210 */ "ccons",
+  /*  211 */ "term",
+  /*  212 */ "expr",
+  /*  213 */ "onconf",
+  /*  214 */ "sortorder",
+  /*  215 */ "autoinc",
+  /*  216 */ "eidlist_opt",
+  /*  217 */ "refargs",
+  /*  218 */ "defer_subclause",
+  /*  219 */ "generated",
+  /*  220 */ "refarg",
+  /*  221 */ "refact",
+  /*  222 */ "init_deferred_pred_opt",
+  /*  223 */ "conslist",
+  /*  224 */ "tconscomma",
+  /*  225 */ "tcons",
+  /*  226 */ "sortlist",
+  /*  227 */ "eidlist",
+  /*  228 */ "defer_subclause_opt",
+  /*  229 */ "orconf",
+  /*  230 */ "resolvetype",
+  /*  231 */ "raisetype",
+  /*  232 */ "ifexists",
+  /*  233 */ "fullname",
+  /*  234 */ "selectnowith",
+  /*  235 */ "oneselect",
+  /*  236 */ "wqlist",
+  /*  237 */ "multiselect_op",
+  /*  238 */ "distinct",
+  /*  239 */ "selcollist",
+  /*  240 */ "from",
+  /*  241 */ "where_opt",
+  /*  242 */ "groupby_opt",
+  /*  243 */ "having_opt",
+  /*  244 */ "orderby_opt",
+  /*  245 */ "limit_opt",
+  /*  246 */ "window_clause",
+  /*  247 */ "values",
+  /*  248 */ "nexprlist",
+  /*  249 */ "sclp",
+  /*  250 */ "as",
+  /*  251 */ "seltablist",
+  /*  252 */ "stl_prefix",
+  /*  253 */ "joinop",
+  /*  254 */ "indexed_opt",
+  /*  255 */ "on_opt",
+  /*  256 */ "using_opt",
+  /*  257 */ "exprlist",
+  /*  258 */ "xfullname",
+  /*  259 */ "idlist",
+  /*  260 */ "nulls",
+  /*  261 */ "with",
+  /*  262 */ "setlist",
+  /*  263 */ "insert_cmd",
+  /*  264 */ "idlist_opt",
+  /*  265 */ "upsert",
+  /*  266 */ "filter_over",
+  /*  267 */ "likeop",
+  /*  268 */ "between_op",
+  /*  269 */ "in_op",
+  /*  270 */ "paren_exprlist",
+  /*  271 */ "case_operand",
+  /*  272 */ "case_exprlist",
+  /*  273 */ "case_else",
+  /*  274 */ "uniqueflag",
+  /*  275 */ "collate",
+  /*  276 */ "vinto",
+  /*  277 */ "nmnum",
+  /*  278 */ "trigger_decl",
+  /*  279 */ "trigger_cmd_list",
+  /*  280 */ "trigger_time",
+  /*  281 */ "trigger_event",
+  /*  282 */ "foreach_clause",
+  /*  283 */ "when_clause",
+  /*  284 */ "trigger_cmd",
+  /*  285 */ "trnm",
+  /*  286 */ "tridxby",
+  /*  287 */ "database_kw_opt",
+  /*  288 */ "key_opt",
+  /*  289 */ "add_column_fullname",
+  /*  290 */ "kwcolumn_opt",
+  /*  291 */ "create_vtab",
+  /*  292 */ "vtabarglist",
+  /*  293 */ "vtabarg",
+  /*  294 */ "vtabargtoken",
+  /*  295 */ "lp",
+  /*  296 */ "anylist",
+  /*  297 */ "windowdefn_list",
+  /*  298 */ "windowdefn",
+  /*  299 */ "window",
+  /*  300 */ "frame_opt",
+  /*  301 */ "part_opt",
+  /*  302 */ "filter_clause",
+  /*  303 */ "over_clause",
+  /*  304 */ "range_or_rows",
+  /*  305 */ "frame_bound",
+  /*  306 */ "frame_bound_s",
+  /*  307 */ "frame_bound_e",
+  /*  308 */ "frame_exclude_opt",
+  /*  309 */ "frame_exclude",
 };
 #endif /* defined(YYCOVERAGE) || !defined(NDEBUG) */
 
@@ -155741,344 +160701,348 @@ static const char *const yyRuleName[] = {
  /*  40 */ "ccons ::= REFERENCES nm eidlist_opt refargs",
  /*  41 */ "ccons ::= defer_subclause",
  /*  42 */ "ccons ::= COLLATE ID|STRING",
- /*  43 */ "autoinc ::=",
- /*  44 */ "autoinc ::= AUTOINCR",
- /*  45 */ "refargs ::=",
- /*  46 */ "refargs ::= refargs refarg",
- /*  47 */ "refarg ::= MATCH nm",
- /*  48 */ "refarg ::= ON INSERT refact",
- /*  49 */ "refarg ::= ON DELETE refact",
- /*  50 */ "refarg ::= ON UPDATE refact",
- /*  51 */ "refact ::= SET NULL",
- /*  52 */ "refact ::= SET DEFAULT",
- /*  53 */ "refact ::= CASCADE",
- /*  54 */ "refact ::= RESTRICT",
- /*  55 */ "refact ::= NO ACTION",
- /*  56 */ "defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt",
- /*  57 */ "defer_subclause ::= DEFERRABLE init_deferred_pred_opt",
- /*  58 */ "init_deferred_pred_opt ::=",
- /*  59 */ "init_deferred_pred_opt ::= INITIALLY DEFERRED",
- /*  60 */ "init_deferred_pred_opt ::= INITIALLY IMMEDIATE",
- /*  61 */ "conslist_opt ::=",
- /*  62 */ "tconscomma ::= COMMA",
- /*  63 */ "tcons ::= CONSTRAINT nm",
- /*  64 */ "tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf",
- /*  65 */ "tcons ::= UNIQUE LP sortlist RP onconf",
- /*  66 */ "tcons ::= CHECK LP expr RP onconf",
- /*  67 */ "tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt",
- /*  68 */ "defer_subclause_opt ::=",
- /*  69 */ "onconf ::=",
- /*  70 */ "onconf ::= ON CONFLICT resolvetype",
- /*  71 */ "orconf ::=",
- /*  72 */ "orconf ::= OR resolvetype",
- /*  73 */ "resolvetype ::= IGNORE",
- /*  74 */ "resolvetype ::= REPLACE",
- /*  75 */ "cmd ::= DROP TABLE ifexists fullname",
- /*  76 */ "ifexists ::= IF EXISTS",
- /*  77 */ "ifexists ::=",
- /*  78 */ "cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select",
- /*  79 */ "cmd ::= DROP VIEW ifexists fullname",
- /*  80 */ "cmd ::= select",
- /*  81 */ "select ::= WITH wqlist selectnowith",
- /*  82 */ "select ::= WITH RECURSIVE wqlist selectnowith",
- /*  83 */ "select ::= selectnowith",
- /*  84 */ "selectnowith ::= selectnowith multiselect_op oneselect",
- /*  85 */ "multiselect_op ::= UNION",
- /*  86 */ "multiselect_op ::= UNION ALL",
- /*  87 */ "multiselect_op ::= EXCEPT|INTERSECT",
- /*  88 */ "oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt",
- /*  89 */ "oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt window_clause orderby_opt limit_opt",
- /*  90 */ "values ::= VALUES LP nexprlist RP",
- /*  91 */ "values ::= values COMMA LP nexprlist RP",
- /*  92 */ "distinct ::= DISTINCT",
- /*  93 */ "distinct ::= ALL",
- /*  94 */ "distinct ::=",
- /*  95 */ "sclp ::=",
- /*  96 */ "selcollist ::= sclp scanpt expr scanpt as",
- /*  97 */ "selcollist ::= sclp scanpt STAR",
- /*  98 */ "selcollist ::= sclp scanpt nm DOT STAR",
- /*  99 */ "as ::= AS nm",
- /* 100 */ "as ::=",
- /* 101 */ "from ::=",
- /* 102 */ "from ::= FROM seltablist",
- /* 103 */ "stl_prefix ::= seltablist joinop",
- /* 104 */ "stl_prefix ::=",
- /* 105 */ "seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt",
- /* 106 */ "seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt",
- /* 107 */ "seltablist ::= stl_prefix LP select RP as on_opt using_opt",
- /* 108 */ "seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt",
- /* 109 */ "dbnm ::=",
- /* 110 */ "dbnm ::= DOT nm",
- /* 111 */ "fullname ::= nm",
- /* 112 */ "fullname ::= nm DOT nm",
- /* 113 */ "xfullname ::= nm",
- /* 114 */ "xfullname ::= nm DOT nm",
- /* 115 */ "xfullname ::= nm DOT nm AS nm",
- /* 116 */ "xfullname ::= nm AS nm",
- /* 117 */ "joinop ::= COMMA|JOIN",
- /* 118 */ "joinop ::= JOIN_KW JOIN",
- /* 119 */ "joinop ::= JOIN_KW nm JOIN",
- /* 120 */ "joinop ::= JOIN_KW nm nm JOIN",
- /* 121 */ "on_opt ::= ON expr",
- /* 122 */ "on_opt ::=",
- /* 123 */ "indexed_opt ::=",
- /* 124 */ "indexed_opt ::= INDEXED BY nm",
- /* 125 */ "indexed_opt ::= NOT INDEXED",
- /* 126 */ "using_opt ::= USING LP idlist RP",
- /* 127 */ "using_opt ::=",
- /* 128 */ "orderby_opt ::=",
- /* 129 */ "orderby_opt ::= ORDER BY sortlist",
- /* 130 */ "sortlist ::= sortlist COMMA expr sortorder nulls",
- /* 131 */ "sortlist ::= expr sortorder nulls",
- /* 132 */ "sortorder ::= ASC",
- /* 133 */ "sortorder ::= DESC",
- /* 134 */ "sortorder ::=",
- /* 135 */ "nulls ::= NULLS FIRST",
- /* 136 */ "nulls ::= NULLS LAST",
- /* 137 */ "nulls ::=",
- /* 138 */ "groupby_opt ::=",
- /* 139 */ "groupby_opt ::= GROUP BY nexprlist",
- /* 140 */ "having_opt ::=",
- /* 141 */ "having_opt ::= HAVING expr",
- /* 142 */ "limit_opt ::=",
- /* 143 */ "limit_opt ::= LIMIT expr",
- /* 144 */ "limit_opt ::= LIMIT expr OFFSET expr",
- /* 145 */ "limit_opt ::= LIMIT expr COMMA expr",
- /* 146 */ "cmd ::= with DELETE FROM xfullname indexed_opt where_opt",
- /* 147 */ "where_opt ::=",
- /* 148 */ "where_opt ::= WHERE expr",
- /* 149 */ "cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist where_opt",
- /* 150 */ "setlist ::= setlist COMMA nm EQ expr",
- /* 151 */ "setlist ::= setlist COMMA LP idlist RP EQ expr",
- /* 152 */ "setlist ::= nm EQ expr",
- /* 153 */ "setlist ::= LP idlist RP EQ expr",
- /* 154 */ "cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert",
- /* 155 */ "cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES",
- /* 156 */ "upsert ::=",
- /* 157 */ "upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt",
- /* 158 */ "upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING",
- /* 159 */ "upsert ::= ON CONFLICT DO NOTHING",
- /* 160 */ "insert_cmd ::= INSERT orconf",
- /* 161 */ "insert_cmd ::= REPLACE",
- /* 162 */ "idlist_opt ::=",
- /* 163 */ "idlist_opt ::= LP idlist RP",
- /* 164 */ "idlist ::= idlist COMMA nm",
- /* 165 */ "idlist ::= nm",
- /* 166 */ "expr ::= LP expr RP",
- /* 167 */ "expr ::= ID|INDEXED",
- /* 168 */ "expr ::= JOIN_KW",
- /* 169 */ "expr ::= nm DOT nm",
- /* 170 */ "expr ::= nm DOT nm DOT nm",
- /* 171 */ "term ::= NULL|FLOAT|BLOB",
- /* 172 */ "term ::= STRING",
- /* 173 */ "term ::= INTEGER",
- /* 174 */ "expr ::= VARIABLE",
- /* 175 */ "expr ::= expr COLLATE ID|STRING",
- /* 176 */ "expr ::= CAST LP expr AS typetoken RP",
- /* 177 */ "expr ::= ID|INDEXED LP distinct exprlist RP",
- /* 178 */ "expr ::= ID|INDEXED LP STAR RP",
- /* 179 */ "expr ::= ID|INDEXED LP distinct exprlist RP filter_over",
- /* 180 */ "expr ::= ID|INDEXED LP STAR RP filter_over",
- /* 181 */ "term ::= CTIME_KW",
- /* 182 */ "expr ::= LP nexprlist COMMA expr RP",
- /* 183 */ "expr ::= expr AND expr",
- /* 184 */ "expr ::= expr OR expr",
- /* 185 */ "expr ::= expr LT|GT|GE|LE expr",
- /* 186 */ "expr ::= expr EQ|NE expr",
- /* 187 */ "expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr",
- /* 188 */ "expr ::= expr PLUS|MINUS expr",
- /* 189 */ "expr ::= expr STAR|SLASH|REM expr",
- /* 190 */ "expr ::= expr CONCAT expr",
- /* 191 */ "likeop ::= NOT LIKE_KW|MATCH",
- /* 192 */ "expr ::= expr likeop expr",
- /* 193 */ "expr ::= expr likeop expr ESCAPE expr",
- /* 194 */ "expr ::= expr ISNULL|NOTNULL",
- /* 195 */ "expr ::= expr NOT NULL",
- /* 196 */ "expr ::= expr IS expr",
- /* 197 */ "expr ::= expr IS NOT expr",
- /* 198 */ "expr ::= NOT expr",
- /* 199 */ "expr ::= BITNOT expr",
- /* 200 */ "expr ::= PLUS|MINUS expr",
- /* 201 */ "between_op ::= BETWEEN",
- /* 202 */ "between_op ::= NOT BETWEEN",
- /* 203 */ "expr ::= expr between_op expr AND expr",
- /* 204 */ "in_op ::= IN",
- /* 205 */ "in_op ::= NOT IN",
- /* 206 */ "expr ::= expr in_op LP exprlist RP",
- /* 207 */ "expr ::= LP select RP",
- /* 208 */ "expr ::= expr in_op LP select RP",
- /* 209 */ "expr ::= expr in_op nm dbnm paren_exprlist",
- /* 210 */ "expr ::= EXISTS LP select RP",
- /* 211 */ "expr ::= CASE case_operand case_exprlist case_else END",
- /* 212 */ "case_exprlist ::= case_exprlist WHEN expr THEN expr",
- /* 213 */ "case_exprlist ::= WHEN expr THEN expr",
- /* 214 */ "case_else ::= ELSE expr",
- /* 215 */ "case_else ::=",
- /* 216 */ "case_operand ::= expr",
- /* 217 */ "case_operand ::=",
- /* 218 */ "exprlist ::=",
- /* 219 */ "nexprlist ::= nexprlist COMMA expr",
- /* 220 */ "nexprlist ::= expr",
- /* 221 */ "paren_exprlist ::=",
- /* 222 */ "paren_exprlist ::= LP exprlist RP",
- /* 223 */ "cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt",
- /* 224 */ "uniqueflag ::= UNIQUE",
- /* 225 */ "uniqueflag ::=",
- /* 226 */ "eidlist_opt ::=",
- /* 227 */ "eidlist_opt ::= LP eidlist RP",
- /* 228 */ "eidlist ::= eidlist COMMA nm collate sortorder",
- /* 229 */ "eidlist ::= nm collate sortorder",
- /* 230 */ "collate ::=",
- /* 231 */ "collate ::= COLLATE ID|STRING",
- /* 232 */ "cmd ::= DROP INDEX ifexists fullname",
- /* 233 */ "cmd ::= VACUUM vinto",
- /* 234 */ "cmd ::= VACUUM nm vinto",
- /* 235 */ "vinto ::= INTO expr",
- /* 236 */ "vinto ::=",
- /* 237 */ "cmd ::= PRAGMA nm dbnm",
- /* 238 */ "cmd ::= PRAGMA nm dbnm EQ nmnum",
- /* 239 */ "cmd ::= PRAGMA nm dbnm LP nmnum RP",
- /* 240 */ "cmd ::= PRAGMA nm dbnm EQ minus_num",
- /* 241 */ "cmd ::= PRAGMA nm dbnm LP minus_num RP",
- /* 242 */ "plus_num ::= PLUS INTEGER|FLOAT",
- /* 243 */ "minus_num ::= MINUS INTEGER|FLOAT",
- /* 244 */ "cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END",
- /* 245 */ "trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause",
- /* 246 */ "trigger_time ::= BEFORE|AFTER",
- /* 247 */ "trigger_time ::= INSTEAD OF",
- /* 248 */ "trigger_time ::=",
- /* 249 */ "trigger_event ::= DELETE|INSERT",
- /* 250 */ "trigger_event ::= UPDATE",
- /* 251 */ "trigger_event ::= UPDATE OF idlist",
- /* 252 */ "when_clause ::=",
- /* 253 */ "when_clause ::= WHEN expr",
- /* 254 */ "trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI",
- /* 255 */ "trigger_cmd_list ::= trigger_cmd SEMI",
- /* 256 */ "trnm ::= nm DOT nm",
- /* 257 */ "tridxby ::= INDEXED BY nm",
- /* 258 */ "tridxby ::= NOT INDEXED",
- /* 259 */ "trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt scanpt",
- /* 260 */ "trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt",
- /* 261 */ "trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt",
- /* 262 */ "trigger_cmd ::= scanpt select scanpt",
- /* 263 */ "expr ::= RAISE LP IGNORE RP",
- /* 264 */ "expr ::= RAISE LP raisetype COMMA nm RP",
- /* 265 */ "raisetype ::= ROLLBACK",
- /* 266 */ "raisetype ::= ABORT",
- /* 267 */ "raisetype ::= FAIL",
- /* 268 */ "cmd ::= DROP TRIGGER ifexists fullname",
- /* 269 */ "cmd ::= ATTACH database_kw_opt expr AS expr key_opt",
- /* 270 */ "cmd ::= DETACH database_kw_opt expr",
- /* 271 */ "key_opt ::=",
- /* 272 */ "key_opt ::= KEY expr",
- /* 273 */ "cmd ::= REINDEX",
- /* 274 */ "cmd ::= REINDEX nm dbnm",
- /* 275 */ "cmd ::= ANALYZE",
- /* 276 */ "cmd ::= ANALYZE nm dbnm",
- /* 277 */ "cmd ::= ALTER TABLE fullname RENAME TO nm",
- /* 278 */ "cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist",
- /* 279 */ "add_column_fullname ::= fullname",
- /* 280 */ "cmd ::= ALTER TABLE fullname RENAME kwcolumn_opt nm TO nm",
- /* 281 */ "cmd ::= create_vtab",
- /* 282 */ "cmd ::= create_vtab LP vtabarglist RP",
- /* 283 */ "create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm",
- /* 284 */ "vtabarg ::=",
- /* 285 */ "vtabargtoken ::= ANY",
- /* 286 */ "vtabargtoken ::= lp anylist RP",
- /* 287 */ "lp ::= LP",
- /* 288 */ "with ::= WITH wqlist",
- /* 289 */ "with ::= WITH RECURSIVE wqlist",
- /* 290 */ "wqlist ::= nm eidlist_opt AS LP select RP",
- /* 291 */ "wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP",
- /* 292 */ "windowdefn_list ::= windowdefn",
- /* 293 */ "windowdefn_list ::= windowdefn_list COMMA windowdefn",
- /* 294 */ "windowdefn ::= nm AS LP window RP",
- /* 295 */ "window ::= PARTITION BY nexprlist orderby_opt frame_opt",
- /* 296 */ "window ::= nm PARTITION BY nexprlist orderby_opt frame_opt",
- /* 297 */ "window ::= ORDER BY sortlist frame_opt",
- /* 298 */ "window ::= nm ORDER BY sortlist frame_opt",
- /* 299 */ "window ::= frame_opt",
- /* 300 */ "window ::= nm frame_opt",
- /* 301 */ "frame_opt ::=",
- /* 302 */ "frame_opt ::= range_or_rows frame_bound_s frame_exclude_opt",
- /* 303 */ "frame_opt ::= range_or_rows BETWEEN frame_bound_s AND frame_bound_e frame_exclude_opt",
- /* 304 */ "range_or_rows ::= RANGE|ROWS|GROUPS",
- /* 305 */ "frame_bound_s ::= frame_bound",
- /* 306 */ "frame_bound_s ::= UNBOUNDED PRECEDING",
- /* 307 */ "frame_bound_e ::= frame_bound",
- /* 308 */ "frame_bound_e ::= UNBOUNDED FOLLOWING",
- /* 309 */ "frame_bound ::= expr PRECEDING|FOLLOWING",
- /* 310 */ "frame_bound ::= CURRENT ROW",
- /* 311 */ "frame_exclude_opt ::=",
- /* 312 */ "frame_exclude_opt ::= EXCLUDE frame_exclude",
- /* 313 */ "frame_exclude ::= NO OTHERS",
- /* 314 */ "frame_exclude ::= CURRENT ROW",
- /* 315 */ "frame_exclude ::= GROUP|TIES",
- /* 316 */ "window_clause ::= WINDOW windowdefn_list",
- /* 317 */ "filter_over ::= filter_clause over_clause",
- /* 318 */ "filter_over ::= over_clause",
- /* 319 */ "filter_over ::= filter_clause",
- /* 320 */ "over_clause ::= OVER LP window RP",
- /* 321 */ "over_clause ::= OVER nm",
- /* 322 */ "filter_clause ::= FILTER LP WHERE expr RP",
- /* 323 */ "input ::= cmdlist",
- /* 324 */ "cmdlist ::= cmdlist ecmd",
- /* 325 */ "cmdlist ::= ecmd",
- /* 326 */ "ecmd ::= SEMI",
- /* 327 */ "ecmd ::= cmdx SEMI",
- /* 328 */ "ecmd ::= explain cmdx",
- /* 329 */ "trans_opt ::=",
- /* 330 */ "trans_opt ::= TRANSACTION",
- /* 331 */ "trans_opt ::= TRANSACTION nm",
- /* 332 */ "savepoint_opt ::= SAVEPOINT",
- /* 333 */ "savepoint_opt ::=",
- /* 334 */ "cmd ::= create_table create_table_args",
- /* 335 */ "columnlist ::= columnlist COMMA columnname carglist",
- /* 336 */ "columnlist ::= columnname carglist",
- /* 337 */ "nm ::= ID|INDEXED",
- /* 338 */ "nm ::= STRING",
- /* 339 */ "nm ::= JOIN_KW",
- /* 340 */ "typetoken ::= typename",
- /* 341 */ "typename ::= ID|STRING",
- /* 342 */ "signed ::= plus_num",
- /* 343 */ "signed ::= minus_num",
- /* 344 */ "carglist ::= carglist ccons",
- /* 345 */ "carglist ::=",
- /* 346 */ "ccons ::= NULL onconf",
- /* 347 */ "conslist_opt ::= COMMA conslist",
- /* 348 */ "conslist ::= conslist tconscomma tcons",
- /* 349 */ "conslist ::= tcons",
- /* 350 */ "tconscomma ::=",
- /* 351 */ "defer_subclause_opt ::= defer_subclause",
- /* 352 */ "resolvetype ::= raisetype",
- /* 353 */ "selectnowith ::= oneselect",
- /* 354 */ "oneselect ::= values",
- /* 355 */ "sclp ::= selcollist COMMA",
- /* 356 */ "as ::= ID|STRING",
- /* 357 */ "expr ::= term",
- /* 358 */ "likeop ::= LIKE_KW|MATCH",
- /* 359 */ "exprlist ::= nexprlist",
- /* 360 */ "nmnum ::= plus_num",
- /* 361 */ "nmnum ::= nm",
- /* 362 */ "nmnum ::= ON",
- /* 363 */ "nmnum ::= DELETE",
- /* 364 */ "nmnum ::= DEFAULT",
- /* 365 */ "plus_num ::= INTEGER|FLOAT",
- /* 366 */ "foreach_clause ::=",
- /* 367 */ "foreach_clause ::= FOR EACH ROW",
- /* 368 */ "trnm ::= nm",
- /* 369 */ "tridxby ::=",
- /* 370 */ "database_kw_opt ::= DATABASE",
- /* 371 */ "database_kw_opt ::=",
- /* 372 */ "kwcolumn_opt ::=",
- /* 373 */ "kwcolumn_opt ::= COLUMNKW",
- /* 374 */ "vtabarglist ::= vtabarg",
- /* 375 */ "vtabarglist ::= vtabarglist COMMA vtabarg",
- /* 376 */ "vtabarg ::= vtabarg vtabargtoken",
- /* 377 */ "anylist ::=",
- /* 378 */ "anylist ::= anylist LP anylist RP",
- /* 379 */ "anylist ::= anylist ANY",
- /* 380 */ "with ::=",
+ /*  43 */ "generated ::= LP expr RP",
+ /*  44 */ "generated ::= LP expr RP ID",
+ /*  45 */ "autoinc ::=",
+ /*  46 */ "autoinc ::= AUTOINCR",
+ /*  47 */ "refargs ::=",
+ /*  48 */ "refargs ::= refargs refarg",
+ /*  49 */ "refarg ::= MATCH nm",
+ /*  50 */ "refarg ::= ON INSERT refact",
+ /*  51 */ "refarg ::= ON DELETE refact",
+ /*  52 */ "refarg ::= ON UPDATE refact",
+ /*  53 */ "refact ::= SET NULL",
+ /*  54 */ "refact ::= SET DEFAULT",
+ /*  55 */ "refact ::= CASCADE",
+ /*  56 */ "refact ::= RESTRICT",
+ /*  57 */ "refact ::= NO ACTION",
+ /*  58 */ "defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt",
+ /*  59 */ "defer_subclause ::= DEFERRABLE init_deferred_pred_opt",
+ /*  60 */ "init_deferred_pred_opt ::=",
+ /*  61 */ "init_deferred_pred_opt ::= INITIALLY DEFERRED",
+ /*  62 */ "init_deferred_pred_opt ::= INITIALLY IMMEDIATE",
+ /*  63 */ "conslist_opt ::=",
+ /*  64 */ "tconscomma ::= COMMA",
+ /*  65 */ "tcons ::= CONSTRAINT nm",
+ /*  66 */ "tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf",
+ /*  67 */ "tcons ::= UNIQUE LP sortlist RP onconf",
+ /*  68 */ "tcons ::= CHECK LP expr RP onconf",
+ /*  69 */ "tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt",
+ /*  70 */ "defer_subclause_opt ::=",
+ /*  71 */ "onconf ::=",
+ /*  72 */ "onconf ::= ON CONFLICT resolvetype",
+ /*  73 */ "orconf ::=",
+ /*  74 */ "orconf ::= OR resolvetype",
+ /*  75 */ "resolvetype ::= IGNORE",
+ /*  76 */ "resolvetype ::= REPLACE",
+ /*  77 */ "cmd ::= DROP TABLE ifexists fullname",
+ /*  78 */ "ifexists ::= IF EXISTS",
+ /*  79 */ "ifexists ::=",
+ /*  80 */ "cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select",
+ /*  81 */ "cmd ::= DROP VIEW ifexists fullname",
+ /*  82 */ "cmd ::= select",
+ /*  83 */ "select ::= WITH wqlist selectnowith",
+ /*  84 */ "select ::= WITH RECURSIVE wqlist selectnowith",
+ /*  85 */ "select ::= selectnowith",
+ /*  86 */ "selectnowith ::= selectnowith multiselect_op oneselect",
+ /*  87 */ "multiselect_op ::= UNION",
+ /*  88 */ "multiselect_op ::= UNION ALL",
+ /*  89 */ "multiselect_op ::= EXCEPT|INTERSECT",
+ /*  90 */ "oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt",
+ /*  91 */ "oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt window_clause orderby_opt limit_opt",
+ /*  92 */ "values ::= VALUES LP nexprlist RP",
+ /*  93 */ "values ::= values COMMA LP nexprlist RP",
+ /*  94 */ "distinct ::= DISTINCT",
+ /*  95 */ "distinct ::= ALL",
+ /*  96 */ "distinct ::=",
+ /*  97 */ "sclp ::=",
+ /*  98 */ "selcollist ::= sclp scanpt expr scanpt as",
+ /*  99 */ "selcollist ::= sclp scanpt STAR",
+ /* 100 */ "selcollist ::= sclp scanpt nm DOT STAR",
+ /* 101 */ "as ::= AS nm",
+ /* 102 */ "as ::=",
+ /* 103 */ "from ::=",
+ /* 104 */ "from ::= FROM seltablist",
+ /* 105 */ "stl_prefix ::= seltablist joinop",
+ /* 106 */ "stl_prefix ::=",
+ /* 107 */ "seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt",
+ /* 108 */ "seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt",
+ /* 109 */ "seltablist ::= stl_prefix LP select RP as on_opt using_opt",
+ /* 110 */ "seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt",
+ /* 111 */ "dbnm ::=",
+ /* 112 */ "dbnm ::= DOT nm",
+ /* 113 */ "fullname ::= nm",
+ /* 114 */ "fullname ::= nm DOT nm",
+ /* 115 */ "xfullname ::= nm",
+ /* 116 */ "xfullname ::= nm DOT nm",
+ /* 117 */ "xfullname ::= nm DOT nm AS nm",
+ /* 118 */ "xfullname ::= nm AS nm",
+ /* 119 */ "joinop ::= COMMA|JOIN",
+ /* 120 */ "joinop ::= JOIN_KW JOIN",
+ /* 121 */ "joinop ::= JOIN_KW nm JOIN",
+ /* 122 */ "joinop ::= JOIN_KW nm nm JOIN",
+ /* 123 */ "on_opt ::= ON expr",
+ /* 124 */ "on_opt ::=",
+ /* 125 */ "indexed_opt ::=",
+ /* 126 */ "indexed_opt ::= INDEXED BY nm",
+ /* 127 */ "indexed_opt ::= NOT INDEXED",
+ /* 128 */ "using_opt ::= USING LP idlist RP",
+ /* 129 */ "using_opt ::=",
+ /* 130 */ "orderby_opt ::=",
+ /* 131 */ "orderby_opt ::= ORDER BY sortlist",
+ /* 132 */ "sortlist ::= sortlist COMMA expr sortorder nulls",
+ /* 133 */ "sortlist ::= expr sortorder nulls",
+ /* 134 */ "sortorder ::= ASC",
+ /* 135 */ "sortorder ::= DESC",
+ /* 136 */ "sortorder ::=",
+ /* 137 */ "nulls ::= NULLS FIRST",
+ /* 138 */ "nulls ::= NULLS LAST",
+ /* 139 */ "nulls ::=",
+ /* 140 */ "groupby_opt ::=",
+ /* 141 */ "groupby_opt ::= GROUP BY nexprlist",
+ /* 142 */ "having_opt ::=",
+ /* 143 */ "having_opt ::= HAVING expr",
+ /* 144 */ "limit_opt ::=",
+ /* 145 */ "limit_opt ::= LIMIT expr",
+ /* 146 */ "limit_opt ::= LIMIT expr OFFSET expr",
+ /* 147 */ "limit_opt ::= LIMIT expr COMMA expr",
+ /* 148 */ "cmd ::= with DELETE FROM xfullname indexed_opt where_opt",
+ /* 149 */ "where_opt ::=",
+ /* 150 */ "where_opt ::= WHERE expr",
+ /* 151 */ "cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist from where_opt",
+ /* 152 */ "setlist ::= setlist COMMA nm EQ expr",
+ /* 153 */ "setlist ::= setlist COMMA LP idlist RP EQ expr",
+ /* 154 */ "setlist ::= nm EQ expr",
+ /* 155 */ "setlist ::= LP idlist RP EQ expr",
+ /* 156 */ "cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert",
+ /* 157 */ "cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES",
+ /* 158 */ "upsert ::=",
+ /* 159 */ "upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt",
+ /* 160 */ "upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING",
+ /* 161 */ "upsert ::= ON CONFLICT DO NOTHING",
+ /* 162 */ "insert_cmd ::= INSERT orconf",
+ /* 163 */ "insert_cmd ::= REPLACE",
+ /* 164 */ "idlist_opt ::=",
+ /* 165 */ "idlist_opt ::= LP idlist RP",
+ /* 166 */ "idlist ::= idlist COMMA nm",
+ /* 167 */ "idlist ::= nm",
+ /* 168 */ "expr ::= LP expr RP",
+ /* 169 */ "expr ::= ID|INDEXED",
+ /* 170 */ "expr ::= JOIN_KW",
+ /* 171 */ "expr ::= nm DOT nm",
+ /* 172 */ "expr ::= nm DOT nm DOT nm",
+ /* 173 */ "term ::= NULL|FLOAT|BLOB",
+ /* 174 */ "term ::= STRING",
+ /* 175 */ "term ::= INTEGER",
+ /* 176 */ "expr ::= VARIABLE",
+ /* 177 */ "expr ::= expr COLLATE ID|STRING",
+ /* 178 */ "expr ::= CAST LP expr AS typetoken RP",
+ /* 179 */ "expr ::= ID|INDEXED LP distinct exprlist RP",
+ /* 180 */ "expr ::= ID|INDEXED LP STAR RP",
+ /* 181 */ "expr ::= ID|INDEXED LP distinct exprlist RP filter_over",
+ /* 182 */ "expr ::= ID|INDEXED LP STAR RP filter_over",
+ /* 183 */ "term ::= CTIME_KW",
+ /* 184 */ "expr ::= LP nexprlist COMMA expr RP",
+ /* 185 */ "expr ::= expr AND expr",
+ /* 186 */ "expr ::= expr OR expr",
+ /* 187 */ "expr ::= expr LT|GT|GE|LE expr",
+ /* 188 */ "expr ::= expr EQ|NE expr",
+ /* 189 */ "expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr",
+ /* 190 */ "expr ::= expr PLUS|MINUS expr",
+ /* 191 */ "expr ::= expr STAR|SLASH|REM expr",
+ /* 192 */ "expr ::= expr CONCAT expr",
+ /* 193 */ "likeop ::= NOT LIKE_KW|MATCH",
+ /* 194 */ "expr ::= expr likeop expr",
+ /* 195 */ "expr ::= expr likeop expr ESCAPE expr",
+ /* 196 */ "expr ::= expr ISNULL|NOTNULL",
+ /* 197 */ "expr ::= expr NOT NULL",
+ /* 198 */ "expr ::= expr IS expr",
+ /* 199 */ "expr ::= expr IS NOT expr",
+ /* 200 */ "expr ::= NOT expr",
+ /* 201 */ "expr ::= BITNOT expr",
+ /* 202 */ "expr ::= PLUS|MINUS expr",
+ /* 203 */ "between_op ::= BETWEEN",
+ /* 204 */ "between_op ::= NOT BETWEEN",
+ /* 205 */ "expr ::= expr between_op expr AND expr",
+ /* 206 */ "in_op ::= IN",
+ /* 207 */ "in_op ::= NOT IN",
+ /* 208 */ "expr ::= expr in_op LP exprlist RP",
+ /* 209 */ "expr ::= LP select RP",
+ /* 210 */ "expr ::= expr in_op LP select RP",
+ /* 211 */ "expr ::= expr in_op nm dbnm paren_exprlist",
+ /* 212 */ "expr ::= EXISTS LP select RP",
+ /* 213 */ "expr ::= CASE case_operand case_exprlist case_else END",
+ /* 214 */ "case_exprlist ::= case_exprlist WHEN expr THEN expr",
+ /* 215 */ "case_exprlist ::= WHEN expr THEN expr",
+ /* 216 */ "case_else ::= ELSE expr",
+ /* 217 */ "case_else ::=",
+ /* 218 */ "case_operand ::= expr",
+ /* 219 */ "case_operand ::=",
+ /* 220 */ "exprlist ::=",
+ /* 221 */ "nexprlist ::= nexprlist COMMA expr",
+ /* 222 */ "nexprlist ::= expr",
+ /* 223 */ "paren_exprlist ::=",
+ /* 224 */ "paren_exprlist ::= LP exprlist RP",
+ /* 225 */ "cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt",
+ /* 226 */ "uniqueflag ::= UNIQUE",
+ /* 227 */ "uniqueflag ::=",
+ /* 228 */ "eidlist_opt ::=",
+ /* 229 */ "eidlist_opt ::= LP eidlist RP",
+ /* 230 */ "eidlist ::= eidlist COMMA nm collate sortorder",
+ /* 231 */ "eidlist ::= nm collate sortorder",
+ /* 232 */ "collate ::=",
+ /* 233 */ "collate ::= COLLATE ID|STRING",
+ /* 234 */ "cmd ::= DROP INDEX ifexists fullname",
+ /* 235 */ "cmd ::= VACUUM vinto",
+ /* 236 */ "cmd ::= VACUUM nm vinto",
+ /* 237 */ "vinto ::= INTO expr",
+ /* 238 */ "vinto ::=",
+ /* 239 */ "cmd ::= PRAGMA nm dbnm",
+ /* 240 */ "cmd ::= PRAGMA nm dbnm EQ nmnum",
+ /* 241 */ "cmd ::= PRAGMA nm dbnm LP nmnum RP",
+ /* 242 */ "cmd ::= PRAGMA nm dbnm EQ minus_num",
+ /* 243 */ "cmd ::= PRAGMA nm dbnm LP minus_num RP",
+ /* 244 */ "plus_num ::= PLUS INTEGER|FLOAT",
+ /* 245 */ "minus_num ::= MINUS INTEGER|FLOAT",
+ /* 246 */ "cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END",
+ /* 247 */ "trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause",
+ /* 248 */ "trigger_time ::= BEFORE|AFTER",
+ /* 249 */ "trigger_time ::= INSTEAD OF",
+ /* 250 */ "trigger_time ::=",
+ /* 251 */ "trigger_event ::= DELETE|INSERT",
+ /* 252 */ "trigger_event ::= UPDATE",
+ /* 253 */ "trigger_event ::= UPDATE OF idlist",
+ /* 254 */ "when_clause ::=",
+ /* 255 */ "when_clause ::= WHEN expr",
+ /* 256 */ "trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI",
+ /* 257 */ "trigger_cmd_list ::= trigger_cmd SEMI",
+ /* 258 */ "trnm ::= nm DOT nm",
+ /* 259 */ "tridxby ::= INDEXED BY nm",
+ /* 260 */ "tridxby ::= NOT INDEXED",
+ /* 261 */ "trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist from where_opt scanpt",
+ /* 262 */ "trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt",
+ /* 263 */ "trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt",
+ /* 264 */ "trigger_cmd ::= scanpt select scanpt",
+ /* 265 */ "expr ::= RAISE LP IGNORE RP",
+ /* 266 */ "expr ::= RAISE LP raisetype COMMA nm RP",
+ /* 267 */ "raisetype ::= ROLLBACK",
+ /* 268 */ "raisetype ::= ABORT",
+ /* 269 */ "raisetype ::= FAIL",
+ /* 270 */ "cmd ::= DROP TRIGGER ifexists fullname",
+ /* 271 */ "cmd ::= ATTACH database_kw_opt expr AS expr key_opt",
+ /* 272 */ "cmd ::= DETACH database_kw_opt expr",
+ /* 273 */ "key_opt ::=",
+ /* 274 */ "key_opt ::= KEY expr",
+ /* 275 */ "cmd ::= REINDEX",
+ /* 276 */ "cmd ::= REINDEX nm dbnm",
+ /* 277 */ "cmd ::= ANALYZE",
+ /* 278 */ "cmd ::= ANALYZE nm dbnm",
+ /* 279 */ "cmd ::= ALTER TABLE fullname RENAME TO nm",
+ /* 280 */ "cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist",
+ /* 281 */ "add_column_fullname ::= fullname",
+ /* 282 */ "cmd ::= ALTER TABLE fullname RENAME kwcolumn_opt nm TO nm",
+ /* 283 */ "cmd ::= create_vtab",
+ /* 284 */ "cmd ::= create_vtab LP vtabarglist RP",
+ /* 285 */ "create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm",
+ /* 286 */ "vtabarg ::=",
+ /* 287 */ "vtabargtoken ::= ANY",
+ /* 288 */ "vtabargtoken ::= lp anylist RP",
+ /* 289 */ "lp ::= LP",
+ /* 290 */ "with ::= WITH wqlist",
+ /* 291 */ "with ::= WITH RECURSIVE wqlist",
+ /* 292 */ "wqlist ::= nm eidlist_opt AS LP select RP",
+ /* 293 */ "wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP",
+ /* 294 */ "windowdefn_list ::= windowdefn",
+ /* 295 */ "windowdefn_list ::= windowdefn_list COMMA windowdefn",
+ /* 296 */ "windowdefn ::= nm AS LP window RP",
+ /* 297 */ "window ::= PARTITION BY nexprlist orderby_opt frame_opt",
+ /* 298 */ "window ::= nm PARTITION BY nexprlist orderby_opt frame_opt",
+ /* 299 */ "window ::= ORDER BY sortlist frame_opt",
+ /* 300 */ "window ::= nm ORDER BY sortlist frame_opt",
+ /* 301 */ "window ::= frame_opt",
+ /* 302 */ "window ::= nm frame_opt",
+ /* 303 */ "frame_opt ::=",
+ /* 304 */ "frame_opt ::= range_or_rows frame_bound_s frame_exclude_opt",
+ /* 305 */ "frame_opt ::= range_or_rows BETWEEN frame_bound_s AND frame_bound_e frame_exclude_opt",
+ /* 306 */ "range_or_rows ::= RANGE|ROWS|GROUPS",
+ /* 307 */ "frame_bound_s ::= frame_bound",
+ /* 308 */ "frame_bound_s ::= UNBOUNDED PRECEDING",
+ /* 309 */ "frame_bound_e ::= frame_bound",
+ /* 310 */ "frame_bound_e ::= UNBOUNDED FOLLOWING",
+ /* 311 */ "frame_bound ::= expr PRECEDING|FOLLOWING",
+ /* 312 */ "frame_bound ::= CURRENT ROW",
+ /* 313 */ "frame_exclude_opt ::=",
+ /* 314 */ "frame_exclude_opt ::= EXCLUDE frame_exclude",
+ /* 315 */ "frame_exclude ::= NO OTHERS",
+ /* 316 */ "frame_exclude ::= CURRENT ROW",
+ /* 317 */ "frame_exclude ::= GROUP|TIES",
+ /* 318 */ "window_clause ::= WINDOW windowdefn_list",
+ /* 319 */ "filter_over ::= filter_clause over_clause",
+ /* 320 */ "filter_over ::= over_clause",
+ /* 321 */ "filter_over ::= filter_clause",
+ /* 322 */ "over_clause ::= OVER LP window RP",
+ /* 323 */ "over_clause ::= OVER nm",
+ /* 324 */ "filter_clause ::= FILTER LP WHERE expr RP",
+ /* 325 */ "input ::= cmdlist",
+ /* 326 */ "cmdlist ::= cmdlist ecmd",
+ /* 327 */ "cmdlist ::= ecmd",
+ /* 328 */ "ecmd ::= SEMI",
+ /* 329 */ "ecmd ::= cmdx SEMI",
+ /* 330 */ "ecmd ::= explain cmdx SEMI",
+ /* 331 */ "trans_opt ::=",
+ /* 332 */ "trans_opt ::= TRANSACTION",
+ /* 333 */ "trans_opt ::= TRANSACTION nm",
+ /* 334 */ "savepoint_opt ::= SAVEPOINT",
+ /* 335 */ "savepoint_opt ::=",
+ /* 336 */ "cmd ::= create_table create_table_args",
+ /* 337 */ "columnlist ::= columnlist COMMA columnname carglist",
+ /* 338 */ "columnlist ::= columnname carglist",
+ /* 339 */ "nm ::= ID|INDEXED",
+ /* 340 */ "nm ::= STRING",
+ /* 341 */ "nm ::= JOIN_KW",
+ /* 342 */ "typetoken ::= typename",
+ /* 343 */ "typename ::= ID|STRING",
+ /* 344 */ "signed ::= plus_num",
+ /* 345 */ "signed ::= minus_num",
+ /* 346 */ "carglist ::= carglist ccons",
+ /* 347 */ "carglist ::=",
+ /* 348 */ "ccons ::= NULL onconf",
+ /* 349 */ "ccons ::= GENERATED ALWAYS AS generated",
+ /* 350 */ "ccons ::= AS generated",
+ /* 351 */ "conslist_opt ::= COMMA conslist",
+ /* 352 */ "conslist ::= conslist tconscomma tcons",
+ /* 353 */ "conslist ::= tcons",
+ /* 354 */ "tconscomma ::=",
+ /* 355 */ "defer_subclause_opt ::= defer_subclause",
+ /* 356 */ "resolvetype ::= raisetype",
+ /* 357 */ "selectnowith ::= oneselect",
+ /* 358 */ "oneselect ::= values",
+ /* 359 */ "sclp ::= selcollist COMMA",
+ /* 360 */ "as ::= ID|STRING",
+ /* 361 */ "expr ::= term",
+ /* 362 */ "likeop ::= LIKE_KW|MATCH",
+ /* 363 */ "exprlist ::= nexprlist",
+ /* 364 */ "nmnum ::= plus_num",
+ /* 365 */ "nmnum ::= nm",
+ /* 366 */ "nmnum ::= ON",
+ /* 367 */ "nmnum ::= DELETE",
+ /* 368 */ "nmnum ::= DEFAULT",
+ /* 369 */ "plus_num ::= INTEGER|FLOAT",
+ /* 370 */ "foreach_clause ::=",
+ /* 371 */ "foreach_clause ::= FOR EACH ROW",
+ /* 372 */ "trnm ::= nm",
+ /* 373 */ "tridxby ::=",
+ /* 374 */ "database_kw_opt ::= DATABASE",
+ /* 375 */ "database_kw_opt ::=",
+ /* 376 */ "kwcolumn_opt ::=",
+ /* 377 */ "kwcolumn_opt ::= COLUMNKW",
+ /* 378 */ "vtabarglist ::= vtabarg",
+ /* 379 */ "vtabarglist ::= vtabarglist COMMA vtabarg",
+ /* 380 */ "vtabarg ::= vtabarg vtabargtoken",
+ /* 381 */ "anylist ::=",
+ /* 382 */ "anylist ::= anylist LP anylist RP",
+ /* 383 */ "anylist ::= anylist ANY",
+ /* 384 */ "with ::=",
 };
 #endif /* NDEBUG */
 
@@ -156204,98 +161168,98 @@ static void yy_destructor(
     ** inside the C code.
     */
 /********* Begin destructor definitions ***************************************/
-    case 198: /* select */
-    case 231: /* selectnowith */
-    case 232: /* oneselect */
-    case 244: /* values */
+    case 200: /* select */
+    case 234: /* selectnowith */
+    case 235: /* oneselect */
+    case 247: /* values */
 {
-sqlite3SelectDelete(pParse->db, (yypminor->yy25));
-}
-      break;
-    case 209: /* term */
-    case 210: /* expr */
-    case 238: /* where_opt */
-    case 240: /* having_opt */
-    case 252: /* on_opt */
-    case 268: /* case_operand */
-    case 270: /* case_else */
-    case 273: /* vinto */
-    case 280: /* when_clause */
-    case 285: /* key_opt */
-    case 299: /* filter_clause */
+sqlite3SelectDelete(pParse->db, (yypminor->yy539));
+}
+      break;
+    case 211: /* term */
+    case 212: /* expr */
+    case 241: /* where_opt */
+    case 243: /* having_opt */
+    case 255: /* on_opt */
+    case 271: /* case_operand */
+    case 273: /* case_else */
+    case 276: /* vinto */
+    case 283: /* when_clause */
+    case 288: /* key_opt */
+    case 302: /* filter_clause */
 {
-sqlite3ExprDelete(pParse->db, (yypminor->yy46));
-}
-      break;
-    case 214: /* eidlist_opt */
-    case 223: /* sortlist */
-    case 224: /* eidlist */
-    case 236: /* selcollist */
-    case 239: /* groupby_opt */
-    case 241: /* orderby_opt */
-    case 245: /* nexprlist */
-    case 246: /* sclp */
-    case 254: /* exprlist */
-    case 259: /* setlist */
-    case 267: /* paren_exprlist */
-    case 269: /* case_exprlist */
-    case 298: /* part_opt */
+sqlite3ExprDelete(pParse->db, (yypminor->yy202));
+}
+      break;
+    case 216: /* eidlist_opt */
+    case 226: /* sortlist */
+    case 227: /* eidlist */
+    case 239: /* selcollist */
+    case 242: /* groupby_opt */
+    case 244: /* orderby_opt */
+    case 248: /* nexprlist */
+    case 249: /* sclp */
+    case 257: /* exprlist */
+    case 262: /* setlist */
+    case 270: /* paren_exprlist */
+    case 272: /* case_exprlist */
+    case 301: /* part_opt */
 {
-sqlite3ExprListDelete(pParse->db, (yypminor->yy138));
+sqlite3ExprListDelete(pParse->db, (yypminor->yy242));
 }
       break;
-    case 230: /* fullname */
-    case 237: /* from */
-    case 248: /* seltablist */
-    case 249: /* stl_prefix */
-    case 255: /* xfullname */
+    case 233: /* fullname */
+    case 240: /* from */
+    case 251: /* seltablist */
+    case 252: /* stl_prefix */
+    case 258: /* xfullname */
 {
-sqlite3SrcListDelete(pParse->db, (yypminor->yy609));
+sqlite3SrcListDelete(pParse->db, (yypminor->yy47));
 }
       break;
-    case 233: /* wqlist */
+    case 236: /* wqlist */
 {
-sqlite3WithDelete(pParse->db, (yypminor->yy297));
+sqlite3WithDelete(pParse->db, (yypminor->yy131));
 }
       break;
-    case 243: /* window_clause */
-    case 294: /* windowdefn_list */
+    case 246: /* window_clause */
+    case 297: /* windowdefn_list */
 {
-sqlite3WindowListDelete(pParse->db, (yypminor->yy455));
+sqlite3WindowListDelete(pParse->db, (yypminor->yy303));
 }
       break;
-    case 253: /* using_opt */
-    case 256: /* idlist */
-    case 261: /* idlist_opt */
+    case 256: /* using_opt */
+    case 259: /* idlist */
+    case 264: /* idlist_opt */
 {
-sqlite3IdListDelete(pParse->db, (yypminor->yy406));
+sqlite3IdListDelete(pParse->db, (yypminor->yy600));
 }
       break;
-    case 263: /* filter_over */
-    case 295: /* windowdefn */
-    case 296: /* window */
-    case 297: /* frame_opt */
-    case 300: /* over_clause */
+    case 266: /* filter_over */
+    case 298: /* windowdefn */
+    case 299: /* window */
+    case 300: /* frame_opt */
+    case 303: /* over_clause */
 {
-sqlite3WindowDelete(pParse->db, (yypminor->yy455));
+sqlite3WindowDelete(pParse->db, (yypminor->yy303));
 }
       break;
-    case 276: /* trigger_cmd_list */
-    case 281: /* trigger_cmd */
+    case 279: /* trigger_cmd_list */
+    case 284: /* trigger_cmd */
 {
-sqlite3DeleteTriggerStep(pParse->db, (yypminor->yy527));
+sqlite3DeleteTriggerStep(pParse->db, (yypminor->yy447));
 }
       break;
-    case 278: /* trigger_event */
+    case 281: /* trigger_event */
 {
-sqlite3IdListDelete(pParse->db, (yypminor->yy572).b);
+sqlite3IdListDelete(pParse->db, (yypminor->yy230).b);
 }
       break;
-    case 302: /* frame_bound */
-    case 303: /* frame_bound_s */
-    case 304: /* frame_bound_e */
+    case 305: /* frame_bound */
+    case 306: /* frame_bound_s */
+    case 307: /* frame_bound_e */
 {
-sqlite3ExprDelete(pParse->db, (yypminor->yy57).pExpr);
+sqlite3ExprDelete(pParse->db, (yypminor->yy77).pExpr);
 }
       break;
 /********* End destructor definitions *****************************************/
@@ -156586,387 +161550,391 @@ static void yy_shift(
 /* For rule J, yyRuleInfoLhs[J] contains the symbol on the left-hand side
 ** of that rule */
 static const YYCODETYPE yyRuleInfoLhs[] = {
-   183,  /* (0) explain ::= EXPLAIN */
-   183,  /* (1) explain ::= EXPLAIN QUERY PLAN */
-   182,  /* (2) cmdx ::= cmd */
-   184,  /* (3) cmd ::= BEGIN transtype trans_opt */
-   185,  /* (4) transtype ::= */
-   185,  /* (5) transtype ::= DEFERRED */
-   185,  /* (6) transtype ::= IMMEDIATE */
-   185,  /* (7) transtype ::= EXCLUSIVE */
-   184,  /* (8) cmd ::= COMMIT|END trans_opt */
-   184,  /* (9) cmd ::= ROLLBACK trans_opt */
-   184,  /* (10) cmd ::= SAVEPOINT nm */
-   184,  /* (11) cmd ::= RELEASE savepoint_opt nm */
-   184,  /* (12) cmd ::= ROLLBACK trans_opt TO savepoint_opt nm */
-   189,  /* (13) create_table ::= createkw temp TABLE ifnotexists nm dbnm */
-   191,  /* (14) createkw ::= CREATE */
-   193,  /* (15) ifnotexists ::= */
-   193,  /* (16) ifnotexists ::= IF NOT EXISTS */
-   192,  /* (17) temp ::= TEMP */
-   192,  /* (18) temp ::= */
-   190,  /* (19) create_table_args ::= LP columnlist conslist_opt RP table_options */
-   190,  /* (20) create_table_args ::= AS select */
-   197,  /* (21) table_options ::= */
-   197,  /* (22) table_options ::= WITHOUT nm */
-   199,  /* (23) columnname ::= nm typetoken */
-   201,  /* (24) typetoken ::= */
-   201,  /* (25) typetoken ::= typename LP signed RP */
-   201,  /* (26) typetoken ::= typename LP signed COMMA signed RP */
-   202,  /* (27) typename ::= typename ID|STRING */
-   206,  /* (28) scanpt ::= */
-   207,  /* (29) scantok ::= */
-   208,  /* (30) ccons ::= CONSTRAINT nm */
-   208,  /* (31) ccons ::= DEFAULT scantok term */
-   208,  /* (32) ccons ::= DEFAULT LP expr RP */
-   208,  /* (33) ccons ::= DEFAULT PLUS scantok term */
-   208,  /* (34) ccons ::= DEFAULT MINUS scantok term */
-   208,  /* (35) ccons ::= DEFAULT scantok ID|INDEXED */
-   208,  /* (36) ccons ::= NOT NULL onconf */
-   208,  /* (37) ccons ::= PRIMARY KEY sortorder onconf autoinc */
-   208,  /* (38) ccons ::= UNIQUE onconf */
-   208,  /* (39) ccons ::= CHECK LP expr RP */
-   208,  /* (40) ccons ::= REFERENCES nm eidlist_opt refargs */
-   208,  /* (41) ccons ::= defer_subclause */
-   208,  /* (42) ccons ::= COLLATE ID|STRING */
-   213,  /* (43) autoinc ::= */
-   213,  /* (44) autoinc ::= AUTOINCR */
-   215,  /* (45) refargs ::= */
-   215,  /* (46) refargs ::= refargs refarg */
-   217,  /* (47) refarg ::= MATCH nm */
-   217,  /* (48) refarg ::= ON INSERT refact */
-   217,  /* (49) refarg ::= ON DELETE refact */
-   217,  /* (50) refarg ::= ON UPDATE refact */
-   218,  /* (51) refact ::= SET NULL */
-   218,  /* (52) refact ::= SET DEFAULT */
-   218,  /* (53) refact ::= CASCADE */
-   218,  /* (54) refact ::= RESTRICT */
-   218,  /* (55) refact ::= NO ACTION */
-   216,  /* (56) defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt */
-   216,  /* (57) defer_subclause ::= DEFERRABLE init_deferred_pred_opt */
-   219,  /* (58) init_deferred_pred_opt ::= */
-   219,  /* (59) init_deferred_pred_opt ::= INITIALLY DEFERRED */
-   219,  /* (60) init_deferred_pred_opt ::= INITIALLY IMMEDIATE */
-   196,  /* (61) conslist_opt ::= */
-   221,  /* (62) tconscomma ::= COMMA */
-   222,  /* (63) tcons ::= CONSTRAINT nm */
-   222,  /* (64) tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf */
-   222,  /* (65) tcons ::= UNIQUE LP sortlist RP onconf */
-   222,  /* (66) tcons ::= CHECK LP expr RP onconf */
-   222,  /* (67) tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt */
-   225,  /* (68) defer_subclause_opt ::= */
-   211,  /* (69) onconf ::= */
-   211,  /* (70) onconf ::= ON CONFLICT resolvetype */
-   226,  /* (71) orconf ::= */
-   226,  /* (72) orconf ::= OR resolvetype */
-   227,  /* (73) resolvetype ::= IGNORE */
-   227,  /* (74) resolvetype ::= REPLACE */
-   184,  /* (75) cmd ::= DROP TABLE ifexists fullname */
-   229,  /* (76) ifexists ::= IF EXISTS */
-   229,  /* (77) ifexists ::= */
-   184,  /* (78) cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select */
-   184,  /* (79) cmd ::= DROP VIEW ifexists fullname */
-   184,  /* (80) cmd ::= select */
-   198,  /* (81) select ::= WITH wqlist selectnowith */
-   198,  /* (82) select ::= WITH RECURSIVE wqlist selectnowith */
-   198,  /* (83) select ::= selectnowith */
-   231,  /* (84) selectnowith ::= selectnowith multiselect_op oneselect */
-   234,  /* (85) multiselect_op ::= UNION */
-   234,  /* (86) multiselect_op ::= UNION ALL */
-   234,  /* (87) multiselect_op ::= EXCEPT|INTERSECT */
-   232,  /* (88) oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt */
-   232,  /* (89) oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt window_clause orderby_opt limit_opt */
-   244,  /* (90) values ::= VALUES LP nexprlist RP */
-   244,  /* (91) values ::= values COMMA LP nexprlist RP */
-   235,  /* (92) distinct ::= DISTINCT */
-   235,  /* (93) distinct ::= ALL */
-   235,  /* (94) distinct ::= */
-   246,  /* (95) sclp ::= */
-   236,  /* (96) selcollist ::= sclp scanpt expr scanpt as */
-   236,  /* (97) selcollist ::= sclp scanpt STAR */
-   236,  /* (98) selcollist ::= sclp scanpt nm DOT STAR */
-   247,  /* (99) as ::= AS nm */
-   247,  /* (100) as ::= */
-   237,  /* (101) from ::= */
-   237,  /* (102) from ::= FROM seltablist */
-   249,  /* (103) stl_prefix ::= seltablist joinop */
-   249,  /* (104) stl_prefix ::= */
-   248,  /* (105) seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt */
-   248,  /* (106) seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt */
-   248,  /* (107) seltablist ::= stl_prefix LP select RP as on_opt using_opt */
-   248,  /* (108) seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt */
-   194,  /* (109) dbnm ::= */
-   194,  /* (110) dbnm ::= DOT nm */
-   230,  /* (111) fullname ::= nm */
-   230,  /* (112) fullname ::= nm DOT nm */
-   255,  /* (113) xfullname ::= nm */
-   255,  /* (114) xfullname ::= nm DOT nm */
-   255,  /* (115) xfullname ::= nm DOT nm AS nm */
-   255,  /* (116) xfullname ::= nm AS nm */
-   250,  /* (117) joinop ::= COMMA|JOIN */
-   250,  /* (118) joinop ::= JOIN_KW JOIN */
-   250,  /* (119) joinop ::= JOIN_KW nm JOIN */
-   250,  /* (120) joinop ::= JOIN_KW nm nm JOIN */
-   252,  /* (121) on_opt ::= ON expr */
-   252,  /* (122) on_opt ::= */
-   251,  /* (123) indexed_opt ::= */
-   251,  /* (124) indexed_opt ::= INDEXED BY nm */
-   251,  /* (125) indexed_opt ::= NOT INDEXED */
-   253,  /* (126) using_opt ::= USING LP idlist RP */
-   253,  /* (127) using_opt ::= */
-   241,  /* (128) orderby_opt ::= */
-   241,  /* (129) orderby_opt ::= ORDER BY sortlist */
-   223,  /* (130) sortlist ::= sortlist COMMA expr sortorder nulls */
-   223,  /* (131) sortlist ::= expr sortorder nulls */
-   212,  /* (132) sortorder ::= ASC */
-   212,  /* (133) sortorder ::= DESC */
-   212,  /* (134) sortorder ::= */
-   257,  /* (135) nulls ::= NULLS FIRST */
-   257,  /* (136) nulls ::= NULLS LAST */
-   257,  /* (137) nulls ::= */
-   239,  /* (138) groupby_opt ::= */
-   239,  /* (139) groupby_opt ::= GROUP BY nexprlist */
-   240,  /* (140) having_opt ::= */
-   240,  /* (141) having_opt ::= HAVING expr */
-   242,  /* (142) limit_opt ::= */
-   242,  /* (143) limit_opt ::= LIMIT expr */
-   242,  /* (144) limit_opt ::= LIMIT expr OFFSET expr */
-   242,  /* (145) limit_opt ::= LIMIT expr COMMA expr */
-   184,  /* (146) cmd ::= with DELETE FROM xfullname indexed_opt where_opt */
-   238,  /* (147) where_opt ::= */
-   238,  /* (148) where_opt ::= WHERE expr */
-   184,  /* (149) cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist where_opt */
-   259,  /* (150) setlist ::= setlist COMMA nm EQ expr */
-   259,  /* (151) setlist ::= setlist COMMA LP idlist RP EQ expr */
-   259,  /* (152) setlist ::= nm EQ expr */
-   259,  /* (153) setlist ::= LP idlist RP EQ expr */
-   184,  /* (154) cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert */
-   184,  /* (155) cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES */
-   262,  /* (156) upsert ::= */
-   262,  /* (157) upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt */
-   262,  /* (158) upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING */
-   262,  /* (159) upsert ::= ON CONFLICT DO NOTHING */
-   260,  /* (160) insert_cmd ::= INSERT orconf */
-   260,  /* (161) insert_cmd ::= REPLACE */
-   261,  /* (162) idlist_opt ::= */
-   261,  /* (163) idlist_opt ::= LP idlist RP */
-   256,  /* (164) idlist ::= idlist COMMA nm */
-   256,  /* (165) idlist ::= nm */
-   210,  /* (166) expr ::= LP expr RP */
-   210,  /* (167) expr ::= ID|INDEXED */
-   210,  /* (168) expr ::= JOIN_KW */
-   210,  /* (169) expr ::= nm DOT nm */
-   210,  /* (170) expr ::= nm DOT nm DOT nm */
-   209,  /* (171) term ::= NULL|FLOAT|BLOB */
-   209,  /* (172) term ::= STRING */
-   209,  /* (173) term ::= INTEGER */
-   210,  /* (174) expr ::= VARIABLE */
-   210,  /* (175) expr ::= expr COLLATE ID|STRING */
-   210,  /* (176) expr ::= CAST LP expr AS typetoken RP */
-   210,  /* (177) expr ::= ID|INDEXED LP distinct exprlist RP */
-   210,  /* (178) expr ::= ID|INDEXED LP STAR RP */
-   210,  /* (179) expr ::= ID|INDEXED LP distinct exprlist RP filter_over */
-   210,  /* (180) expr ::= ID|INDEXED LP STAR RP filter_over */
-   209,  /* (181) term ::= CTIME_KW */
-   210,  /* (182) expr ::= LP nexprlist COMMA expr RP */
-   210,  /* (183) expr ::= expr AND expr */
-   210,  /* (184) expr ::= expr OR expr */
-   210,  /* (185) expr ::= expr LT|GT|GE|LE expr */
-   210,  /* (186) expr ::= expr EQ|NE expr */
-   210,  /* (187) expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */
-   210,  /* (188) expr ::= expr PLUS|MINUS expr */
-   210,  /* (189) expr ::= expr STAR|SLASH|REM expr */
-   210,  /* (190) expr ::= expr CONCAT expr */
-   264,  /* (191) likeop ::= NOT LIKE_KW|MATCH */
-   210,  /* (192) expr ::= expr likeop expr */
-   210,  /* (193) expr ::= expr likeop expr ESCAPE expr */
-   210,  /* (194) expr ::= expr ISNULL|NOTNULL */
-   210,  /* (195) expr ::= expr NOT NULL */
-   210,  /* (196) expr ::= expr IS expr */
-   210,  /* (197) expr ::= expr IS NOT expr */
-   210,  /* (198) expr ::= NOT expr */
-   210,  /* (199) expr ::= BITNOT expr */
-   210,  /* (200) expr ::= PLUS|MINUS expr */
-   265,  /* (201) between_op ::= BETWEEN */
-   265,  /* (202) between_op ::= NOT BETWEEN */
-   210,  /* (203) expr ::= expr between_op expr AND expr */
-   266,  /* (204) in_op ::= IN */
-   266,  /* (205) in_op ::= NOT IN */
-   210,  /* (206) expr ::= expr in_op LP exprlist RP */
-   210,  /* (207) expr ::= LP select RP */
-   210,  /* (208) expr ::= expr in_op LP select RP */
-   210,  /* (209) expr ::= expr in_op nm dbnm paren_exprlist */
-   210,  /* (210) expr ::= EXISTS LP select RP */
-   210,  /* (211) expr ::= CASE case_operand case_exprlist case_else END */
-   269,  /* (212) case_exprlist ::= case_exprlist WHEN expr THEN expr */
-   269,  /* (213) case_exprlist ::= WHEN expr THEN expr */
-   270,  /* (214) case_else ::= ELSE expr */
-   270,  /* (215) case_else ::= */
-   268,  /* (216) case_operand ::= expr */
-   268,  /* (217) case_operand ::= */
-   254,  /* (218) exprlist ::= */
-   245,  /* (219) nexprlist ::= nexprlist COMMA expr */
-   245,  /* (220) nexprlist ::= expr */
-   267,  /* (221) paren_exprlist ::= */
-   267,  /* (222) paren_exprlist ::= LP exprlist RP */
-   184,  /* (223) cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt */
-   271,  /* (224) uniqueflag ::= UNIQUE */
-   271,  /* (225) uniqueflag ::= */
-   214,  /* (226) eidlist_opt ::= */
-   214,  /* (227) eidlist_opt ::= LP eidlist RP */
-   224,  /* (228) eidlist ::= eidlist COMMA nm collate sortorder */
-   224,  /* (229) eidlist ::= nm collate sortorder */
-   272,  /* (230) collate ::= */
-   272,  /* (231) collate ::= COLLATE ID|STRING */
-   184,  /* (232) cmd ::= DROP INDEX ifexists fullname */
-   184,  /* (233) cmd ::= VACUUM vinto */
-   184,  /* (234) cmd ::= VACUUM nm vinto */
-   273,  /* (235) vinto ::= INTO expr */
-   273,  /* (236) vinto ::= */
-   184,  /* (237) cmd ::= PRAGMA nm dbnm */
-   184,  /* (238) cmd ::= PRAGMA nm dbnm EQ nmnum */
-   184,  /* (239) cmd ::= PRAGMA nm dbnm LP nmnum RP */
-   184,  /* (240) cmd ::= PRAGMA nm dbnm EQ minus_num */
-   184,  /* (241) cmd ::= PRAGMA nm dbnm LP minus_num RP */
-   204,  /* (242) plus_num ::= PLUS INTEGER|FLOAT */
-   205,  /* (243) minus_num ::= MINUS INTEGER|FLOAT */
-   184,  /* (244) cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */
-   275,  /* (245) trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */
-   277,  /* (246) trigger_time ::= BEFORE|AFTER */
-   277,  /* (247) trigger_time ::= INSTEAD OF */
-   277,  /* (248) trigger_time ::= */
-   278,  /* (249) trigger_event ::= DELETE|INSERT */
-   278,  /* (250) trigger_event ::= UPDATE */
-   278,  /* (251) trigger_event ::= UPDATE OF idlist */
-   280,  /* (252) when_clause ::= */
-   280,  /* (253) when_clause ::= WHEN expr */
-   276,  /* (254) trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */
-   276,  /* (255) trigger_cmd_list ::= trigger_cmd SEMI */
-   282,  /* (256) trnm ::= nm DOT nm */
-   283,  /* (257) tridxby ::= INDEXED BY nm */
-   283,  /* (258) tridxby ::= NOT INDEXED */
-   281,  /* (259) trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt scanpt */
-   281,  /* (260) trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt */
-   281,  /* (261) trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt */
-   281,  /* (262) trigger_cmd ::= scanpt select scanpt */
-   210,  /* (263) expr ::= RAISE LP IGNORE RP */
-   210,  /* (264) expr ::= RAISE LP raisetype COMMA nm RP */
-   228,  /* (265) raisetype ::= ROLLBACK */
-   228,  /* (266) raisetype ::= ABORT */
-   228,  /* (267) raisetype ::= FAIL */
-   184,  /* (268) cmd ::= DROP TRIGGER ifexists fullname */
-   184,  /* (269) cmd ::= ATTACH database_kw_opt expr AS expr key_opt */
-   184,  /* (270) cmd ::= DETACH database_kw_opt expr */
-   285,  /* (271) key_opt ::= */
-   285,  /* (272) key_opt ::= KEY expr */
-   184,  /* (273) cmd ::= REINDEX */
-   184,  /* (274) cmd ::= REINDEX nm dbnm */
-   184,  /* (275) cmd ::= ANALYZE */
-   184,  /* (276) cmd ::= ANALYZE nm dbnm */
-   184,  /* (277) cmd ::= ALTER TABLE fullname RENAME TO nm */
-   184,  /* (278) cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist */
-   286,  /* (279) add_column_fullname ::= fullname */
-   184,  /* (280) cmd ::= ALTER TABLE fullname RENAME kwcolumn_opt nm TO nm */
-   184,  /* (281) cmd ::= create_vtab */
-   184,  /* (282) cmd ::= create_vtab LP vtabarglist RP */
-   288,  /* (283) create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */
-   290,  /* (284) vtabarg ::= */
-   291,  /* (285) vtabargtoken ::= ANY */
-   291,  /* (286) vtabargtoken ::= lp anylist RP */
-   292,  /* (287) lp ::= LP */
-   258,  /* (288) with ::= WITH wqlist */
-   258,  /* (289) with ::= WITH RECURSIVE wqlist */
-   233,  /* (290) wqlist ::= nm eidlist_opt AS LP select RP */
-   233,  /* (291) wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP */
-   294,  /* (292) windowdefn_list ::= windowdefn */
-   294,  /* (293) windowdefn_list ::= windowdefn_list COMMA windowdefn */
-   295,  /* (294) windowdefn ::= nm AS LP window RP */
-   296,  /* (295) window ::= PARTITION BY nexprlist orderby_opt frame_opt */
-   296,  /* (296) window ::= nm PARTITION BY nexprlist orderby_opt frame_opt */
-   296,  /* (297) window ::= ORDER BY sortlist frame_opt */
-   296,  /* (298) window ::= nm ORDER BY sortlist frame_opt */
-   296,  /* (299) window ::= frame_opt */
-   296,  /* (300) window ::= nm frame_opt */
-   297,  /* (301) frame_opt ::= */
-   297,  /* (302) frame_opt ::= range_or_rows frame_bound_s frame_exclude_opt */
-   297,  /* (303) frame_opt ::= range_or_rows BETWEEN frame_bound_s AND frame_bound_e frame_exclude_opt */
-   301,  /* (304) range_or_rows ::= RANGE|ROWS|GROUPS */
-   303,  /* (305) frame_bound_s ::= frame_bound */
-   303,  /* (306) frame_bound_s ::= UNBOUNDED PRECEDING */
-   304,  /* (307) frame_bound_e ::= frame_bound */
-   304,  /* (308) frame_bound_e ::= UNBOUNDED FOLLOWING */
-   302,  /* (309) frame_bound ::= expr PRECEDING|FOLLOWING */
-   302,  /* (310) frame_bound ::= CURRENT ROW */
-   305,  /* (311) frame_exclude_opt ::= */
-   305,  /* (312) frame_exclude_opt ::= EXCLUDE frame_exclude */
-   306,  /* (313) frame_exclude ::= NO OTHERS */
-   306,  /* (314) frame_exclude ::= CURRENT ROW */
-   306,  /* (315) frame_exclude ::= GROUP|TIES */
-   243,  /* (316) window_clause ::= WINDOW windowdefn_list */
-   263,  /* (317) filter_over ::= filter_clause over_clause */
-   263,  /* (318) filter_over ::= over_clause */
-   263,  /* (319) filter_over ::= filter_clause */
-   300,  /* (320) over_clause ::= OVER LP window RP */
-   300,  /* (321) over_clause ::= OVER nm */
-   299,  /* (322) filter_clause ::= FILTER LP WHERE expr RP */
-   179,  /* (323) input ::= cmdlist */
-   180,  /* (324) cmdlist ::= cmdlist ecmd */
-   180,  /* (325) cmdlist ::= ecmd */
-   181,  /* (326) ecmd ::= SEMI */
-   181,  /* (327) ecmd ::= cmdx SEMI */
-   181,  /* (328) ecmd ::= explain cmdx */
-   186,  /* (329) trans_opt ::= */
-   186,  /* (330) trans_opt ::= TRANSACTION */
-   186,  /* (331) trans_opt ::= TRANSACTION nm */
-   188,  /* (332) savepoint_opt ::= SAVEPOINT */
-   188,  /* (333) savepoint_opt ::= */
-   184,  /* (334) cmd ::= create_table create_table_args */
-   195,  /* (335) columnlist ::= columnlist COMMA columnname carglist */
-   195,  /* (336) columnlist ::= columnname carglist */
-   187,  /* (337) nm ::= ID|INDEXED */
-   187,  /* (338) nm ::= STRING */
-   187,  /* (339) nm ::= JOIN_KW */
-   201,  /* (340) typetoken ::= typename */
-   202,  /* (341) typename ::= ID|STRING */
-   203,  /* (342) signed ::= plus_num */
-   203,  /* (343) signed ::= minus_num */
-   200,  /* (344) carglist ::= carglist ccons */
-   200,  /* (345) carglist ::= */
-   208,  /* (346) ccons ::= NULL onconf */
-   196,  /* (347) conslist_opt ::= COMMA conslist */
-   220,  /* (348) conslist ::= conslist tconscomma tcons */
-   220,  /* (349) conslist ::= tcons */
-   221,  /* (350) tconscomma ::= */
-   225,  /* (351) defer_subclause_opt ::= defer_subclause */
-   227,  /* (352) resolvetype ::= raisetype */
-   231,  /* (353) selectnowith ::= oneselect */
-   232,  /* (354) oneselect ::= values */
-   246,  /* (355) sclp ::= selcollist COMMA */
-   247,  /* (356) as ::= ID|STRING */
-   210,  /* (357) expr ::= term */
-   264,  /* (358) likeop ::= LIKE_KW|MATCH */
-   254,  /* (359) exprlist ::= nexprlist */
-   274,  /* (360) nmnum ::= plus_num */
-   274,  /* (361) nmnum ::= nm */
-   274,  /* (362) nmnum ::= ON */
-   274,  /* (363) nmnum ::= DELETE */
-   274,  /* (364) nmnum ::= DEFAULT */
-   204,  /* (365) plus_num ::= INTEGER|FLOAT */
-   279,  /* (366) foreach_clause ::= */
-   279,  /* (367) foreach_clause ::= FOR EACH ROW */
-   282,  /* (368) trnm ::= nm */
-   283,  /* (369) tridxby ::= */
-   284,  /* (370) database_kw_opt ::= DATABASE */
-   284,  /* (371) database_kw_opt ::= */
-   287,  /* (372) kwcolumn_opt ::= */
-   287,  /* (373) kwcolumn_opt ::= COLUMNKW */
-   289,  /* (374) vtabarglist ::= vtabarg */
-   289,  /* (375) vtabarglist ::= vtabarglist COMMA vtabarg */
-   290,  /* (376) vtabarg ::= vtabarg vtabargtoken */
-   293,  /* (377) anylist ::= */
-   293,  /* (378) anylist ::= anylist LP anylist RP */
-   293,  /* (379) anylist ::= anylist ANY */
-   258,  /* (380) with ::= */
+   185,  /* (0) explain ::= EXPLAIN */
+   185,  /* (1) explain ::= EXPLAIN QUERY PLAN */
+   184,  /* (2) cmdx ::= cmd */
+   186,  /* (3) cmd ::= BEGIN transtype trans_opt */
+   187,  /* (4) transtype ::= */
+   187,  /* (5) transtype ::= DEFERRED */
+   187,  /* (6) transtype ::= IMMEDIATE */
+   187,  /* (7) transtype ::= EXCLUSIVE */
+   186,  /* (8) cmd ::= COMMIT|END trans_opt */
+   186,  /* (9) cmd ::= ROLLBACK trans_opt */
+   186,  /* (10) cmd ::= SAVEPOINT nm */
+   186,  /* (11) cmd ::= RELEASE savepoint_opt nm */
+   186,  /* (12) cmd ::= ROLLBACK trans_opt TO savepoint_opt nm */
+   191,  /* (13) create_table ::= createkw temp TABLE ifnotexists nm dbnm */
+   193,  /* (14) createkw ::= CREATE */
+   195,  /* (15) ifnotexists ::= */
+   195,  /* (16) ifnotexists ::= IF NOT EXISTS */
+   194,  /* (17) temp ::= TEMP */
+   194,  /* (18) temp ::= */
+   192,  /* (19) create_table_args ::= LP columnlist conslist_opt RP table_options */
+   192,  /* (20) create_table_args ::= AS select */
+   199,  /* (21) table_options ::= */
+   199,  /* (22) table_options ::= WITHOUT nm */
+   201,  /* (23) columnname ::= nm typetoken */
+   203,  /* (24) typetoken ::= */
+   203,  /* (25) typetoken ::= typename LP signed RP */
+   203,  /* (26) typetoken ::= typename LP signed COMMA signed RP */
+   204,  /* (27) typename ::= typename ID|STRING */
+   208,  /* (28) scanpt ::= */
+   209,  /* (29) scantok ::= */
+   210,  /* (30) ccons ::= CONSTRAINT nm */
+   210,  /* (31) ccons ::= DEFAULT scantok term */
+   210,  /* (32) ccons ::= DEFAULT LP expr RP */
+   210,  /* (33) ccons ::= DEFAULT PLUS scantok term */
+   210,  /* (34) ccons ::= DEFAULT MINUS scantok term */
+   210,  /* (35) ccons ::= DEFAULT scantok ID|INDEXED */
+   210,  /* (36) ccons ::= NOT NULL onconf */
+   210,  /* (37) ccons ::= PRIMARY KEY sortorder onconf autoinc */
+   210,  /* (38) ccons ::= UNIQUE onconf */
+   210,  /* (39) ccons ::= CHECK LP expr RP */
+   210,  /* (40) ccons ::= REFERENCES nm eidlist_opt refargs */
+   210,  /* (41) ccons ::= defer_subclause */
+   210,  /* (42) ccons ::= COLLATE ID|STRING */
+   219,  /* (43) generated ::= LP expr RP */
+   219,  /* (44) generated ::= LP expr RP ID */
+   215,  /* (45) autoinc ::= */
+   215,  /* (46) autoinc ::= AUTOINCR */
+   217,  /* (47) refargs ::= */
+   217,  /* (48) refargs ::= refargs refarg */
+   220,  /* (49) refarg ::= MATCH nm */
+   220,  /* (50) refarg ::= ON INSERT refact */
+   220,  /* (51) refarg ::= ON DELETE refact */
+   220,  /* (52) refarg ::= ON UPDATE refact */
+   221,  /* (53) refact ::= SET NULL */
+   221,  /* (54) refact ::= SET DEFAULT */
+   221,  /* (55) refact ::= CASCADE */
+   221,  /* (56) refact ::= RESTRICT */
+   221,  /* (57) refact ::= NO ACTION */
+   218,  /* (58) defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt */
+   218,  /* (59) defer_subclause ::= DEFERRABLE init_deferred_pred_opt */
+   222,  /* (60) init_deferred_pred_opt ::= */
+   222,  /* (61) init_deferred_pred_opt ::= INITIALLY DEFERRED */
+   222,  /* (62) init_deferred_pred_opt ::= INITIALLY IMMEDIATE */
+   198,  /* (63) conslist_opt ::= */
+   224,  /* (64) tconscomma ::= COMMA */
+   225,  /* (65) tcons ::= CONSTRAINT nm */
+   225,  /* (66) tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf */
+   225,  /* (67) tcons ::= UNIQUE LP sortlist RP onconf */
+   225,  /* (68) tcons ::= CHECK LP expr RP onconf */
+   225,  /* (69) tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt */
+   228,  /* (70) defer_subclause_opt ::= */
+   213,  /* (71) onconf ::= */
+   213,  /* (72) onconf ::= ON CONFLICT resolvetype */
+   229,  /* (73) orconf ::= */
+   229,  /* (74) orconf ::= OR resolvetype */
+   230,  /* (75) resolvetype ::= IGNORE */
+   230,  /* (76) resolvetype ::= REPLACE */
+   186,  /* (77) cmd ::= DROP TABLE ifexists fullname */
+   232,  /* (78) ifexists ::= IF EXISTS */
+   232,  /* (79) ifexists ::= */
+   186,  /* (80) cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select */
+   186,  /* (81) cmd ::= DROP VIEW ifexists fullname */
+   186,  /* (82) cmd ::= select */
+   200,  /* (83) select ::= WITH wqlist selectnowith */
+   200,  /* (84) select ::= WITH RECURSIVE wqlist selectnowith */
+   200,  /* (85) select ::= selectnowith */
+   234,  /* (86) selectnowith ::= selectnowith multiselect_op oneselect */
+   237,  /* (87) multiselect_op ::= UNION */
+   237,  /* (88) multiselect_op ::= UNION ALL */
+   237,  /* (89) multiselect_op ::= EXCEPT|INTERSECT */
+   235,  /* (90) oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt */
+   235,  /* (91) oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt window_clause orderby_opt limit_opt */
+   247,  /* (92) values ::= VALUES LP nexprlist RP */
+   247,  /* (93) values ::= values COMMA LP nexprlist RP */
+   238,  /* (94) distinct ::= DISTINCT */
+   238,  /* (95) distinct ::= ALL */
+   238,  /* (96) distinct ::= */
+   249,  /* (97) sclp ::= */
+   239,  /* (98) selcollist ::= sclp scanpt expr scanpt as */
+   239,  /* (99) selcollist ::= sclp scanpt STAR */
+   239,  /* (100) selcollist ::= sclp scanpt nm DOT STAR */
+   250,  /* (101) as ::= AS nm */
+   250,  /* (102) as ::= */
+   240,  /* (103) from ::= */
+   240,  /* (104) from ::= FROM seltablist */
+   252,  /* (105) stl_prefix ::= seltablist joinop */
+   252,  /* (106) stl_prefix ::= */
+   251,  /* (107) seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt */
+   251,  /* (108) seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt */
+   251,  /* (109) seltablist ::= stl_prefix LP select RP as on_opt using_opt */
+   251,  /* (110) seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt */
+   196,  /* (111) dbnm ::= */
+   196,  /* (112) dbnm ::= DOT nm */
+   233,  /* (113) fullname ::= nm */
+   233,  /* (114) fullname ::= nm DOT nm */
+   258,  /* (115) xfullname ::= nm */
+   258,  /* (116) xfullname ::= nm DOT nm */
+   258,  /* (117) xfullname ::= nm DOT nm AS nm */
+   258,  /* (118) xfullname ::= nm AS nm */
+   253,  /* (119) joinop ::= COMMA|JOIN */
+   253,  /* (120) joinop ::= JOIN_KW JOIN */
+   253,  /* (121) joinop ::= JOIN_KW nm JOIN */
+   253,  /* (122) joinop ::= JOIN_KW nm nm JOIN */
+   255,  /* (123) on_opt ::= ON expr */
+   255,  /* (124) on_opt ::= */
+   254,  /* (125) indexed_opt ::= */
+   254,  /* (126) indexed_opt ::= INDEXED BY nm */
+   254,  /* (127) indexed_opt ::= NOT INDEXED */
+   256,  /* (128) using_opt ::= USING LP idlist RP */
+   256,  /* (129) using_opt ::= */
+   244,  /* (130) orderby_opt ::= */
+   244,  /* (131) orderby_opt ::= ORDER BY sortlist */
+   226,  /* (132) sortlist ::= sortlist COMMA expr sortorder nulls */
+   226,  /* (133) sortlist ::= expr sortorder nulls */
+   214,  /* (134) sortorder ::= ASC */
+   214,  /* (135) sortorder ::= DESC */
+   214,  /* (136) sortorder ::= */
+   260,  /* (137) nulls ::= NULLS FIRST */
+   260,  /* (138) nulls ::= NULLS LAST */
+   260,  /* (139) nulls ::= */
+   242,  /* (140) groupby_opt ::= */
+   242,  /* (141) groupby_opt ::= GROUP BY nexprlist */
+   243,  /* (142) having_opt ::= */
+   243,  /* (143) having_opt ::= HAVING expr */
+   245,  /* (144) limit_opt ::= */
+   245,  /* (145) limit_opt ::= LIMIT expr */
+   245,  /* (146) limit_opt ::= LIMIT expr OFFSET expr */
+   245,  /* (147) limit_opt ::= LIMIT expr COMMA expr */
+   186,  /* (148) cmd ::= with DELETE FROM xfullname indexed_opt where_opt */
+   241,  /* (149) where_opt ::= */
+   241,  /* (150) where_opt ::= WHERE expr */
+   186,  /* (151) cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist from where_opt */
+   262,  /* (152) setlist ::= setlist COMMA nm EQ expr */
+   262,  /* (153) setlist ::= setlist COMMA LP idlist RP EQ expr */
+   262,  /* (154) setlist ::= nm EQ expr */
+   262,  /* (155) setlist ::= LP idlist RP EQ expr */
+   186,  /* (156) cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert */
+   186,  /* (157) cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES */
+   265,  /* (158) upsert ::= */
+   265,  /* (159) upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt */
+   265,  /* (160) upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING */
+   265,  /* (161) upsert ::= ON CONFLICT DO NOTHING */
+   263,  /* (162) insert_cmd ::= INSERT orconf */
+   263,  /* (163) insert_cmd ::= REPLACE */
+   264,  /* (164) idlist_opt ::= */
+   264,  /* (165) idlist_opt ::= LP idlist RP */
+   259,  /* (166) idlist ::= idlist COMMA nm */
+   259,  /* (167) idlist ::= nm */
+   212,  /* (168) expr ::= LP expr RP */
+   212,  /* (169) expr ::= ID|INDEXED */
+   212,  /* (170) expr ::= JOIN_KW */
+   212,  /* (171) expr ::= nm DOT nm */
+   212,  /* (172) expr ::= nm DOT nm DOT nm */
+   211,  /* (173) term ::= NULL|FLOAT|BLOB */
+   211,  /* (174) term ::= STRING */
+   211,  /* (175) term ::= INTEGER */
+   212,  /* (176) expr ::= VARIABLE */
+   212,  /* (177) expr ::= expr COLLATE ID|STRING */
+   212,  /* (178) expr ::= CAST LP expr AS typetoken RP */
+   212,  /* (179) expr ::= ID|INDEXED LP distinct exprlist RP */
+   212,  /* (180) expr ::= ID|INDEXED LP STAR RP */
+   212,  /* (181) expr ::= ID|INDEXED LP distinct exprlist RP filter_over */
+   212,  /* (182) expr ::= ID|INDEXED LP STAR RP filter_over */
+   211,  /* (183) term ::= CTIME_KW */
+   212,  /* (184) expr ::= LP nexprlist COMMA expr RP */
+   212,  /* (185) expr ::= expr AND expr */
+   212,  /* (186) expr ::= expr OR expr */
+   212,  /* (187) expr ::= expr LT|GT|GE|LE expr */
+   212,  /* (188) expr ::= expr EQ|NE expr */
+   212,  /* (189) expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */
+   212,  /* (190) expr ::= expr PLUS|MINUS expr */
+   212,  /* (191) expr ::= expr STAR|SLASH|REM expr */
+   212,  /* (192) expr ::= expr CONCAT expr */
+   267,  /* (193) likeop ::= NOT LIKE_KW|MATCH */
+   212,  /* (194) expr ::= expr likeop expr */
+   212,  /* (195) expr ::= expr likeop expr ESCAPE expr */
+   212,  /* (196) expr ::= expr ISNULL|NOTNULL */
+   212,  /* (197) expr ::= expr NOT NULL */
+   212,  /* (198) expr ::= expr IS expr */
+   212,  /* (199) expr ::= expr IS NOT expr */
+   212,  /* (200) expr ::= NOT expr */
+   212,  /* (201) expr ::= BITNOT expr */
+   212,  /* (202) expr ::= PLUS|MINUS expr */
+   268,  /* (203) between_op ::= BETWEEN */
+   268,  /* (204) between_op ::= NOT BETWEEN */
+   212,  /* (205) expr ::= expr between_op expr AND expr */
+   269,  /* (206) in_op ::= IN */
+   269,  /* (207) in_op ::= NOT IN */
+   212,  /* (208) expr ::= expr in_op LP exprlist RP */
+   212,  /* (209) expr ::= LP select RP */
+   212,  /* (210) expr ::= expr in_op LP select RP */
+   212,  /* (211) expr ::= expr in_op nm dbnm paren_exprlist */
+   212,  /* (212) expr ::= EXISTS LP select RP */
+   212,  /* (213) expr ::= CASE case_operand case_exprlist case_else END */
+   272,  /* (214) case_exprlist ::= case_exprlist WHEN expr THEN expr */
+   272,  /* (215) case_exprlist ::= WHEN expr THEN expr */
+   273,  /* (216) case_else ::= ELSE expr */
+   273,  /* (217) case_else ::= */
+   271,  /* (218) case_operand ::= expr */
+   271,  /* (219) case_operand ::= */
+   257,  /* (220) exprlist ::= */
+   248,  /* (221) nexprlist ::= nexprlist COMMA expr */
+   248,  /* (222) nexprlist ::= expr */
+   270,  /* (223) paren_exprlist ::= */
+   270,  /* (224) paren_exprlist ::= LP exprlist RP */
+   186,  /* (225) cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt */
+   274,  /* (226) uniqueflag ::= UNIQUE */
+   274,  /* (227) uniqueflag ::= */
+   216,  /* (228) eidlist_opt ::= */
+   216,  /* (229) eidlist_opt ::= LP eidlist RP */
+   227,  /* (230) eidlist ::= eidlist COMMA nm collate sortorder */
+   227,  /* (231) eidlist ::= nm collate sortorder */
+   275,  /* (232) collate ::= */
+   275,  /* (233) collate ::= COLLATE ID|STRING */
+   186,  /* (234) cmd ::= DROP INDEX ifexists fullname */
+   186,  /* (235) cmd ::= VACUUM vinto */
+   186,  /* (236) cmd ::= VACUUM nm vinto */
+   276,  /* (237) vinto ::= INTO expr */
+   276,  /* (238) vinto ::= */
+   186,  /* (239) cmd ::= PRAGMA nm dbnm */
+   186,  /* (240) cmd ::= PRAGMA nm dbnm EQ nmnum */
+   186,  /* (241) cmd ::= PRAGMA nm dbnm LP nmnum RP */
+   186,  /* (242) cmd ::= PRAGMA nm dbnm EQ minus_num */
+   186,  /* (243) cmd ::= PRAGMA nm dbnm LP minus_num RP */
+   206,  /* (244) plus_num ::= PLUS INTEGER|FLOAT */
+   207,  /* (245) minus_num ::= MINUS INTEGER|FLOAT */
+   186,  /* (246) cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */
+   278,  /* (247) trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */
+   280,  /* (248) trigger_time ::= BEFORE|AFTER */
+   280,  /* (249) trigger_time ::= INSTEAD OF */
+   280,  /* (250) trigger_time ::= */
+   281,  /* (251) trigger_event ::= DELETE|INSERT */
+   281,  /* (252) trigger_event ::= UPDATE */
+   281,  /* (253) trigger_event ::= UPDATE OF idlist */
+   283,  /* (254) when_clause ::= */
+   283,  /* (255) when_clause ::= WHEN expr */
+   279,  /* (256) trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */
+   279,  /* (257) trigger_cmd_list ::= trigger_cmd SEMI */
+   285,  /* (258) trnm ::= nm DOT nm */
+   286,  /* (259) tridxby ::= INDEXED BY nm */
+   286,  /* (260) tridxby ::= NOT INDEXED */
+   284,  /* (261) trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist from where_opt scanpt */
+   284,  /* (262) trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt */
+   284,  /* (263) trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt */
+   284,  /* (264) trigger_cmd ::= scanpt select scanpt */
+   212,  /* (265) expr ::= RAISE LP IGNORE RP */
+   212,  /* (266) expr ::= RAISE LP raisetype COMMA nm RP */
+   231,  /* (267) raisetype ::= ROLLBACK */
+   231,  /* (268) raisetype ::= ABORT */
+   231,  /* (269) raisetype ::= FAIL */
+   186,  /* (270) cmd ::= DROP TRIGGER ifexists fullname */
+   186,  /* (271) cmd ::= ATTACH database_kw_opt expr AS expr key_opt */
+   186,  /* (272) cmd ::= DETACH database_kw_opt expr */
+   288,  /* (273) key_opt ::= */
+   288,  /* (274) key_opt ::= KEY expr */
+   186,  /* (275) cmd ::= REINDEX */
+   186,  /* (276) cmd ::= REINDEX nm dbnm */
+   186,  /* (277) cmd ::= ANALYZE */
+   186,  /* (278) cmd ::= ANALYZE nm dbnm */
+   186,  /* (279) cmd ::= ALTER TABLE fullname RENAME TO nm */
+   186,  /* (280) cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist */
+   289,  /* (281) add_column_fullname ::= fullname */
+   186,  /* (282) cmd ::= ALTER TABLE fullname RENAME kwcolumn_opt nm TO nm */
+   186,  /* (283) cmd ::= create_vtab */
+   186,  /* (284) cmd ::= create_vtab LP vtabarglist RP */
+   291,  /* (285) create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */
+   293,  /* (286) vtabarg ::= */
+   294,  /* (287) vtabargtoken ::= ANY */
+   294,  /* (288) vtabargtoken ::= lp anylist RP */
+   295,  /* (289) lp ::= LP */
+   261,  /* (290) with ::= WITH wqlist */
+   261,  /* (291) with ::= WITH RECURSIVE wqlist */
+   236,  /* (292) wqlist ::= nm eidlist_opt AS LP select RP */
+   236,  /* (293) wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP */
+   297,  /* (294) windowdefn_list ::= windowdefn */
+   297,  /* (295) windowdefn_list ::= windowdefn_list COMMA windowdefn */
+   298,  /* (296) windowdefn ::= nm AS LP window RP */
+   299,  /* (297) window ::= PARTITION BY nexprlist orderby_opt frame_opt */
+   299,  /* (298) window ::= nm PARTITION BY nexprlist orderby_opt frame_opt */
+   299,  /* (299) window ::= ORDER BY sortlist frame_opt */
+   299,  /* (300) window ::= nm ORDER BY sortlist frame_opt */
+   299,  /* (301) window ::= frame_opt */
+   299,  /* (302) window ::= nm frame_opt */
+   300,  /* (303) frame_opt ::= */
+   300,  /* (304) frame_opt ::= range_or_rows frame_bound_s frame_exclude_opt */
+   300,  /* (305) frame_opt ::= range_or_rows BETWEEN frame_bound_s AND frame_bound_e frame_exclude_opt */
+   304,  /* (306) range_or_rows ::= RANGE|ROWS|GROUPS */
+   306,  /* (307) frame_bound_s ::= frame_bound */
+   306,  /* (308) frame_bound_s ::= UNBOUNDED PRECEDING */
+   307,  /* (309) frame_bound_e ::= frame_bound */
+   307,  /* (310) frame_bound_e ::= UNBOUNDED FOLLOWING */
+   305,  /* (311) frame_bound ::= expr PRECEDING|FOLLOWING */
+   305,  /* (312) frame_bound ::= CURRENT ROW */
+   308,  /* (313) frame_exclude_opt ::= */
+   308,  /* (314) frame_exclude_opt ::= EXCLUDE frame_exclude */
+   309,  /* (315) frame_exclude ::= NO OTHERS */
+   309,  /* (316) frame_exclude ::= CURRENT ROW */
+   309,  /* (317) frame_exclude ::= GROUP|TIES */
+   246,  /* (318) window_clause ::= WINDOW windowdefn_list */
+   266,  /* (319) filter_over ::= filter_clause over_clause */
+   266,  /* (320) filter_over ::= over_clause */
+   266,  /* (321) filter_over ::= filter_clause */
+   303,  /* (322) over_clause ::= OVER LP window RP */
+   303,  /* (323) over_clause ::= OVER nm */
+   302,  /* (324) filter_clause ::= FILTER LP WHERE expr RP */
+   181,  /* (325) input ::= cmdlist */
+   182,  /* (326) cmdlist ::= cmdlist ecmd */
+   182,  /* (327) cmdlist ::= ecmd */
+   183,  /* (328) ecmd ::= SEMI */
+   183,  /* (329) ecmd ::= cmdx SEMI */
+   183,  /* (330) ecmd ::= explain cmdx SEMI */
+   188,  /* (331) trans_opt ::= */
+   188,  /* (332) trans_opt ::= TRANSACTION */
+   188,  /* (333) trans_opt ::= TRANSACTION nm */
+   190,  /* (334) savepoint_opt ::= SAVEPOINT */
+   190,  /* (335) savepoint_opt ::= */
+   186,  /* (336) cmd ::= create_table create_table_args */
+   197,  /* (337) columnlist ::= columnlist COMMA columnname carglist */
+   197,  /* (338) columnlist ::= columnname carglist */
+   189,  /* (339) nm ::= ID|INDEXED */
+   189,  /* (340) nm ::= STRING */
+   189,  /* (341) nm ::= JOIN_KW */
+   203,  /* (342) typetoken ::= typename */
+   204,  /* (343) typename ::= ID|STRING */
+   205,  /* (344) signed ::= plus_num */
+   205,  /* (345) signed ::= minus_num */
+   202,  /* (346) carglist ::= carglist ccons */
+   202,  /* (347) carglist ::= */
+   210,  /* (348) ccons ::= NULL onconf */
+   210,  /* (349) ccons ::= GENERATED ALWAYS AS generated */
+   210,  /* (350) ccons ::= AS generated */
+   198,  /* (351) conslist_opt ::= COMMA conslist */
+   223,  /* (352) conslist ::= conslist tconscomma tcons */
+   223,  /* (353) conslist ::= tcons */
+   224,  /* (354) tconscomma ::= */
+   228,  /* (355) defer_subclause_opt ::= defer_subclause */
+   230,  /* (356) resolvetype ::= raisetype */
+   234,  /* (357) selectnowith ::= oneselect */
+   235,  /* (358) oneselect ::= values */
+   249,  /* (359) sclp ::= selcollist COMMA */
+   250,  /* (360) as ::= ID|STRING */
+   212,  /* (361) expr ::= term */
+   267,  /* (362) likeop ::= LIKE_KW|MATCH */
+   257,  /* (363) exprlist ::= nexprlist */
+   277,  /* (364) nmnum ::= plus_num */
+   277,  /* (365) nmnum ::= nm */
+   277,  /* (366) nmnum ::= ON */
+   277,  /* (367) nmnum ::= DELETE */
+   277,  /* (368) nmnum ::= DEFAULT */
+   206,  /* (369) plus_num ::= INTEGER|FLOAT */
+   282,  /* (370) foreach_clause ::= */
+   282,  /* (371) foreach_clause ::= FOR EACH ROW */
+   285,  /* (372) trnm ::= nm */
+   286,  /* (373) tridxby ::= */
+   287,  /* (374) database_kw_opt ::= DATABASE */
+   287,  /* (375) database_kw_opt ::= */
+   290,  /* (376) kwcolumn_opt ::= */
+   290,  /* (377) kwcolumn_opt ::= COLUMNKW */
+   292,  /* (378) vtabarglist ::= vtabarg */
+   292,  /* (379) vtabarglist ::= vtabarglist COMMA vtabarg */
+   293,  /* (380) vtabarg ::= vtabarg vtabargtoken */
+   296,  /* (381) anylist ::= */
+   296,  /* (382) anylist ::= anylist LP anylist RP */
+   296,  /* (383) anylist ::= anylist ANY */
+   261,  /* (384) with ::= */
 };
 
 /* For rule J, yyRuleInfoNRhs[J] contains the negative of the number
@@ -157015,344 +161983,348 @@ static const signed char yyRuleInfoNRhs[] = {
    -4,  /* (40) ccons ::= REFERENCES nm eidlist_opt refargs */
    -1,  /* (41) ccons ::= defer_subclause */
    -2,  /* (42) ccons ::= COLLATE ID|STRING */
-    0,  /* (43) autoinc ::= */
-   -1,  /* (44) autoinc ::= AUTOINCR */
-    0,  /* (45) refargs ::= */
-   -2,  /* (46) refargs ::= refargs refarg */
-   -2,  /* (47) refarg ::= MATCH nm */
-   -3,  /* (48) refarg ::= ON INSERT refact */
-   -3,  /* (49) refarg ::= ON DELETE refact */
-   -3,  /* (50) refarg ::= ON UPDATE refact */
-   -2,  /* (51) refact ::= SET NULL */
-   -2,  /* (52) refact ::= SET DEFAULT */
-   -1,  /* (53) refact ::= CASCADE */
-   -1,  /* (54) refact ::= RESTRICT */
-   -2,  /* (55) refact ::= NO ACTION */
-   -3,  /* (56) defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt */
-   -2,  /* (57) defer_subclause ::= DEFERRABLE init_deferred_pred_opt */
-    0,  /* (58) init_deferred_pred_opt ::= */
-   -2,  /* (59) init_deferred_pred_opt ::= INITIALLY DEFERRED */
-   -2,  /* (60) init_deferred_pred_opt ::= INITIALLY IMMEDIATE */
-    0,  /* (61) conslist_opt ::= */
-   -1,  /* (62) tconscomma ::= COMMA */
-   -2,  /* (63) tcons ::= CONSTRAINT nm */
-   -7,  /* (64) tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf */
-   -5,  /* (65) tcons ::= UNIQUE LP sortlist RP onconf */
-   -5,  /* (66) tcons ::= CHECK LP expr RP onconf */
-  -10,  /* (67) tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt */
-    0,  /* (68) defer_subclause_opt ::= */
-    0,  /* (69) onconf ::= */
-   -3,  /* (70) onconf ::= ON CONFLICT resolvetype */
-    0,  /* (71) orconf ::= */
-   -2,  /* (72) orconf ::= OR resolvetype */
-   -1,  /* (73) resolvetype ::= IGNORE */
-   -1,  /* (74) resolvetype ::= REPLACE */
-   -4,  /* (75) cmd ::= DROP TABLE ifexists fullname */
-   -2,  /* (76) ifexists ::= IF EXISTS */
-    0,  /* (77) ifexists ::= */
-   -9,  /* (78) cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select */
-   -4,  /* (79) cmd ::= DROP VIEW ifexists fullname */
-   -1,  /* (80) cmd ::= select */
-   -3,  /* (81) select ::= WITH wqlist selectnowith */
-   -4,  /* (82) select ::= WITH RECURSIVE wqlist selectnowith */
-   -1,  /* (83) select ::= selectnowith */
-   -3,  /* (84) selectnowith ::= selectnowith multiselect_op oneselect */
-   -1,  /* (85) multiselect_op ::= UNION */
-   -2,  /* (86) multiselect_op ::= UNION ALL */
-   -1,  /* (87) multiselect_op ::= EXCEPT|INTERSECT */
-   -9,  /* (88) oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt */
-  -10,  /* (89) oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt window_clause orderby_opt limit_opt */
-   -4,  /* (90) values ::= VALUES LP nexprlist RP */
-   -5,  /* (91) values ::= values COMMA LP nexprlist RP */
-   -1,  /* (92) distinct ::= DISTINCT */
-   -1,  /* (93) distinct ::= ALL */
-    0,  /* (94) distinct ::= */
-    0,  /* (95) sclp ::= */
-   -5,  /* (96) selcollist ::= sclp scanpt expr scanpt as */
-   -3,  /* (97) selcollist ::= sclp scanpt STAR */
-   -5,  /* (98) selcollist ::= sclp scanpt nm DOT STAR */
-   -2,  /* (99) as ::= AS nm */
-    0,  /* (100) as ::= */
-    0,  /* (101) from ::= */
-   -2,  /* (102) from ::= FROM seltablist */
-   -2,  /* (103) stl_prefix ::= seltablist joinop */
-    0,  /* (104) stl_prefix ::= */
-   -7,  /* (105) seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt */
-   -9,  /* (106) seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt */
-   -7,  /* (107) seltablist ::= stl_prefix LP select RP as on_opt using_opt */
-   -7,  /* (108) seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt */
-    0,  /* (109) dbnm ::= */
-   -2,  /* (110) dbnm ::= DOT nm */
-   -1,  /* (111) fullname ::= nm */
-   -3,  /* (112) fullname ::= nm DOT nm */
-   -1,  /* (113) xfullname ::= nm */
-   -3,  /* (114) xfullname ::= nm DOT nm */
-   -5,  /* (115) xfullname ::= nm DOT nm AS nm */
-   -3,  /* (116) xfullname ::= nm AS nm */
-   -1,  /* (117) joinop ::= COMMA|JOIN */
-   -2,  /* (118) joinop ::= JOIN_KW JOIN */
-   -3,  /* (119) joinop ::= JOIN_KW nm JOIN */
-   -4,  /* (120) joinop ::= JOIN_KW nm nm JOIN */
-   -2,  /* (121) on_opt ::= ON expr */
-    0,  /* (122) on_opt ::= */
-    0,  /* (123) indexed_opt ::= */
-   -3,  /* (124) indexed_opt ::= INDEXED BY nm */
-   -2,  /* (125) indexed_opt ::= NOT INDEXED */
-   -4,  /* (126) using_opt ::= USING LP idlist RP */
-    0,  /* (127) using_opt ::= */
-    0,  /* (128) orderby_opt ::= */
-   -3,  /* (129) orderby_opt ::= ORDER BY sortlist */
-   -5,  /* (130) sortlist ::= sortlist COMMA expr sortorder nulls */
-   -3,  /* (131) sortlist ::= expr sortorder nulls */
-   -1,  /* (132) sortorder ::= ASC */
-   -1,  /* (133) sortorder ::= DESC */
-    0,  /* (134) sortorder ::= */
-   -2,  /* (135) nulls ::= NULLS FIRST */
-   -2,  /* (136) nulls ::= NULLS LAST */
-    0,  /* (137) nulls ::= */
-    0,  /* (138) groupby_opt ::= */
-   -3,  /* (139) groupby_opt ::= GROUP BY nexprlist */
-    0,  /* (140) having_opt ::= */
-   -2,  /* (141) having_opt ::= HAVING expr */
-    0,  /* (142) limit_opt ::= */
-   -2,  /* (143) limit_opt ::= LIMIT expr */
-   -4,  /* (144) limit_opt ::= LIMIT expr OFFSET expr */
-   -4,  /* (145) limit_opt ::= LIMIT expr COMMA expr */
-   -6,  /* (146) cmd ::= with DELETE FROM xfullname indexed_opt where_opt */
-    0,  /* (147) where_opt ::= */
-   -2,  /* (148) where_opt ::= WHERE expr */
-   -8,  /* (149) cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist where_opt */
-   -5,  /* (150) setlist ::= setlist COMMA nm EQ expr */
-   -7,  /* (151) setlist ::= setlist COMMA LP idlist RP EQ expr */
-   -3,  /* (152) setlist ::= nm EQ expr */
-   -5,  /* (153) setlist ::= LP idlist RP EQ expr */
-   -7,  /* (154) cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert */
-   -7,  /* (155) cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES */
-    0,  /* (156) upsert ::= */
-  -11,  /* (157) upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt */
-   -8,  /* (158) upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING */
-   -4,  /* (159) upsert ::= ON CONFLICT DO NOTHING */
-   -2,  /* (160) insert_cmd ::= INSERT orconf */
-   -1,  /* (161) insert_cmd ::= REPLACE */
-    0,  /* (162) idlist_opt ::= */
-   -3,  /* (163) idlist_opt ::= LP idlist RP */
-   -3,  /* (164) idlist ::= idlist COMMA nm */
-   -1,  /* (165) idlist ::= nm */
-   -3,  /* (166) expr ::= LP expr RP */
-   -1,  /* (167) expr ::= ID|INDEXED */
-   -1,  /* (168) expr ::= JOIN_KW */
-   -3,  /* (169) expr ::= nm DOT nm */
-   -5,  /* (170) expr ::= nm DOT nm DOT nm */
-   -1,  /* (171) term ::= NULL|FLOAT|BLOB */
-   -1,  /* (172) term ::= STRING */
-   -1,  /* (173) term ::= INTEGER */
-   -1,  /* (174) expr ::= VARIABLE */
-   -3,  /* (175) expr ::= expr COLLATE ID|STRING */
-   -6,  /* (176) expr ::= CAST LP expr AS typetoken RP */
-   -5,  /* (177) expr ::= ID|INDEXED LP distinct exprlist RP */
-   -4,  /* (178) expr ::= ID|INDEXED LP STAR RP */
-   -6,  /* (179) expr ::= ID|INDEXED LP distinct exprlist RP filter_over */
-   -5,  /* (180) expr ::= ID|INDEXED LP STAR RP filter_over */
-   -1,  /* (181) term ::= CTIME_KW */
-   -5,  /* (182) expr ::= LP nexprlist COMMA expr RP */
-   -3,  /* (183) expr ::= expr AND expr */
-   -3,  /* (184) expr ::= expr OR expr */
-   -3,  /* (185) expr ::= expr LT|GT|GE|LE expr */
-   -3,  /* (186) expr ::= expr EQ|NE expr */
-   -3,  /* (187) expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */
-   -3,  /* (188) expr ::= expr PLUS|MINUS expr */
-   -3,  /* (189) expr ::= expr STAR|SLASH|REM expr */
-   -3,  /* (190) expr ::= expr CONCAT expr */
-   -2,  /* (191) likeop ::= NOT LIKE_KW|MATCH */
-   -3,  /* (192) expr ::= expr likeop expr */
-   -5,  /* (193) expr ::= expr likeop expr ESCAPE expr */
-   -2,  /* (194) expr ::= expr ISNULL|NOTNULL */
-   -3,  /* (195) expr ::= expr NOT NULL */
-   -3,  /* (196) expr ::= expr IS expr */
-   -4,  /* (197) expr ::= expr IS NOT expr */
-   -2,  /* (198) expr ::= NOT expr */
-   -2,  /* (199) expr ::= BITNOT expr */
-   -2,  /* (200) expr ::= PLUS|MINUS expr */
-   -1,  /* (201) between_op ::= BETWEEN */
-   -2,  /* (202) between_op ::= NOT BETWEEN */
-   -5,  /* (203) expr ::= expr between_op expr AND expr */
-   -1,  /* (204) in_op ::= IN */
-   -2,  /* (205) in_op ::= NOT IN */
-   -5,  /* (206) expr ::= expr in_op LP exprlist RP */
-   -3,  /* (207) expr ::= LP select RP */
-   -5,  /* (208) expr ::= expr in_op LP select RP */
-   -5,  /* (209) expr ::= expr in_op nm dbnm paren_exprlist */
-   -4,  /* (210) expr ::= EXISTS LP select RP */
-   -5,  /* (211) expr ::= CASE case_operand case_exprlist case_else END */
-   -5,  /* (212) case_exprlist ::= case_exprlist WHEN expr THEN expr */
-   -4,  /* (213) case_exprlist ::= WHEN expr THEN expr */
-   -2,  /* (214) case_else ::= ELSE expr */
-    0,  /* (215) case_else ::= */
-   -1,  /* (216) case_operand ::= expr */
-    0,  /* (217) case_operand ::= */
-    0,  /* (218) exprlist ::= */
-   -3,  /* (219) nexprlist ::= nexprlist COMMA expr */
-   -1,  /* (220) nexprlist ::= expr */
-    0,  /* (221) paren_exprlist ::= */
-   -3,  /* (222) paren_exprlist ::= LP exprlist RP */
-  -12,  /* (223) cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt */
-   -1,  /* (224) uniqueflag ::= UNIQUE */
-    0,  /* (225) uniqueflag ::= */
-    0,  /* (226) eidlist_opt ::= */
-   -3,  /* (227) eidlist_opt ::= LP eidlist RP */
-   -5,  /* (228) eidlist ::= eidlist COMMA nm collate sortorder */
-   -3,  /* (229) eidlist ::= nm collate sortorder */
-    0,  /* (230) collate ::= */
-   -2,  /* (231) collate ::= COLLATE ID|STRING */
-   -4,  /* (232) cmd ::= DROP INDEX ifexists fullname */
-   -2,  /* (233) cmd ::= VACUUM vinto */
-   -3,  /* (234) cmd ::= VACUUM nm vinto */
-   -2,  /* (235) vinto ::= INTO expr */
-    0,  /* (236) vinto ::= */
-   -3,  /* (237) cmd ::= PRAGMA nm dbnm */
-   -5,  /* (238) cmd ::= PRAGMA nm dbnm EQ nmnum */
-   -6,  /* (239) cmd ::= PRAGMA nm dbnm LP nmnum RP */
-   -5,  /* (240) cmd ::= PRAGMA nm dbnm EQ minus_num */
-   -6,  /* (241) cmd ::= PRAGMA nm dbnm LP minus_num RP */
-   -2,  /* (242) plus_num ::= PLUS INTEGER|FLOAT */
-   -2,  /* (243) minus_num ::= MINUS INTEGER|FLOAT */
-   -5,  /* (244) cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */
-  -11,  /* (245) trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */
-   -1,  /* (246) trigger_time ::= BEFORE|AFTER */
-   -2,  /* (247) trigger_time ::= INSTEAD OF */
-    0,  /* (248) trigger_time ::= */
-   -1,  /* (249) trigger_event ::= DELETE|INSERT */
-   -1,  /* (250) trigger_event ::= UPDATE */
-   -3,  /* (251) trigger_event ::= UPDATE OF idlist */
-    0,  /* (252) when_clause ::= */
-   -2,  /* (253) when_clause ::= WHEN expr */
-   -3,  /* (254) trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */
-   -2,  /* (255) trigger_cmd_list ::= trigger_cmd SEMI */
-   -3,  /* (256) trnm ::= nm DOT nm */
-   -3,  /* (257) tridxby ::= INDEXED BY nm */
-   -2,  /* (258) tridxby ::= NOT INDEXED */
-   -8,  /* (259) trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt scanpt */
-   -8,  /* (260) trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt */
-   -6,  /* (261) trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt */
-   -3,  /* (262) trigger_cmd ::= scanpt select scanpt */
-   -4,  /* (263) expr ::= RAISE LP IGNORE RP */
-   -6,  /* (264) expr ::= RAISE LP raisetype COMMA nm RP */
-   -1,  /* (265) raisetype ::= ROLLBACK */
-   -1,  /* (266) raisetype ::= ABORT */
-   -1,  /* (267) raisetype ::= FAIL */
-   -4,  /* (268) cmd ::= DROP TRIGGER ifexists fullname */
-   -6,  /* (269) cmd ::= ATTACH database_kw_opt expr AS expr key_opt */
-   -3,  /* (270) cmd ::= DETACH database_kw_opt expr */
-    0,  /* (271) key_opt ::= */
-   -2,  /* (272) key_opt ::= KEY expr */
-   -1,  /* (273) cmd ::= REINDEX */
-   -3,  /* (274) cmd ::= REINDEX nm dbnm */
-   -1,  /* (275) cmd ::= ANALYZE */
-   -3,  /* (276) cmd ::= ANALYZE nm dbnm */
-   -6,  /* (277) cmd ::= ALTER TABLE fullname RENAME TO nm */
-   -7,  /* (278) cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist */
-   -1,  /* (279) add_column_fullname ::= fullname */
-   -8,  /* (280) cmd ::= ALTER TABLE fullname RENAME kwcolumn_opt nm TO nm */
-   -1,  /* (281) cmd ::= create_vtab */
-   -4,  /* (282) cmd ::= create_vtab LP vtabarglist RP */
-   -8,  /* (283) create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */
-    0,  /* (284) vtabarg ::= */
-   -1,  /* (285) vtabargtoken ::= ANY */
-   -3,  /* (286) vtabargtoken ::= lp anylist RP */
-   -1,  /* (287) lp ::= LP */
-   -2,  /* (288) with ::= WITH wqlist */
-   -3,  /* (289) with ::= WITH RECURSIVE wqlist */
-   -6,  /* (290) wqlist ::= nm eidlist_opt AS LP select RP */
-   -8,  /* (291) wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP */
-   -1,  /* (292) windowdefn_list ::= windowdefn */
-   -3,  /* (293) windowdefn_list ::= windowdefn_list COMMA windowdefn */
-   -5,  /* (294) windowdefn ::= nm AS LP window RP */
-   -5,  /* (295) window ::= PARTITION BY nexprlist orderby_opt frame_opt */
-   -6,  /* (296) window ::= nm PARTITION BY nexprlist orderby_opt frame_opt */
-   -4,  /* (297) window ::= ORDER BY sortlist frame_opt */
-   -5,  /* (298) window ::= nm ORDER BY sortlist frame_opt */
-   -1,  /* (299) window ::= frame_opt */
-   -2,  /* (300) window ::= nm frame_opt */
-    0,  /* (301) frame_opt ::= */
-   -3,  /* (302) frame_opt ::= range_or_rows frame_bound_s frame_exclude_opt */
-   -6,  /* (303) frame_opt ::= range_or_rows BETWEEN frame_bound_s AND frame_bound_e frame_exclude_opt */
-   -1,  /* (304) range_or_rows ::= RANGE|ROWS|GROUPS */
-   -1,  /* (305) frame_bound_s ::= frame_bound */
-   -2,  /* (306) frame_bound_s ::= UNBOUNDED PRECEDING */
-   -1,  /* (307) frame_bound_e ::= frame_bound */
-   -2,  /* (308) frame_bound_e ::= UNBOUNDED FOLLOWING */
-   -2,  /* (309) frame_bound ::= expr PRECEDING|FOLLOWING */
-   -2,  /* (310) frame_bound ::= CURRENT ROW */
-    0,  /* (311) frame_exclude_opt ::= */
-   -2,  /* (312) frame_exclude_opt ::= EXCLUDE frame_exclude */
-   -2,  /* (313) frame_exclude ::= NO OTHERS */
-   -2,  /* (314) frame_exclude ::= CURRENT ROW */
-   -1,  /* (315) frame_exclude ::= GROUP|TIES */
-   -2,  /* (316) window_clause ::= WINDOW windowdefn_list */
-   -2,  /* (317) filter_over ::= filter_clause over_clause */
-   -1,  /* (318) filter_over ::= over_clause */
-   -1,  /* (319) filter_over ::= filter_clause */
-   -4,  /* (320) over_clause ::= OVER LP window RP */
-   -2,  /* (321) over_clause ::= OVER nm */
-   -5,  /* (322) filter_clause ::= FILTER LP WHERE expr RP */
-   -1,  /* (323) input ::= cmdlist */
-   -2,  /* (324) cmdlist ::= cmdlist ecmd */
-   -1,  /* (325) cmdlist ::= ecmd */
-   -1,  /* (326) ecmd ::= SEMI */
-   -2,  /* (327) ecmd ::= cmdx SEMI */
-   -2,  /* (328) ecmd ::= explain cmdx */
-    0,  /* (329) trans_opt ::= */
-   -1,  /* (330) trans_opt ::= TRANSACTION */
-   -2,  /* (331) trans_opt ::= TRANSACTION nm */
-   -1,  /* (332) savepoint_opt ::= SAVEPOINT */
-    0,  /* (333) savepoint_opt ::= */
-   -2,  /* (334) cmd ::= create_table create_table_args */
-   -4,  /* (335) columnlist ::= columnlist COMMA columnname carglist */
-   -2,  /* (336) columnlist ::= columnname carglist */
-   -1,  /* (337) nm ::= ID|INDEXED */
-   -1,  /* (338) nm ::= STRING */
-   -1,  /* (339) nm ::= JOIN_KW */
-   -1,  /* (340) typetoken ::= typename */
-   -1,  /* (341) typename ::= ID|STRING */
-   -1,  /* (342) signed ::= plus_num */
-   -1,  /* (343) signed ::= minus_num */
-   -2,  /* (344) carglist ::= carglist ccons */
-    0,  /* (345) carglist ::= */
-   -2,  /* (346) ccons ::= NULL onconf */
-   -2,  /* (347) conslist_opt ::= COMMA conslist */
-   -3,  /* (348) conslist ::= conslist tconscomma tcons */
-   -1,  /* (349) conslist ::= tcons */
-    0,  /* (350) tconscomma ::= */
-   -1,  /* (351) defer_subclause_opt ::= defer_subclause */
-   -1,  /* (352) resolvetype ::= raisetype */
-   -1,  /* (353) selectnowith ::= oneselect */
-   -1,  /* (354) oneselect ::= values */
-   -2,  /* (355) sclp ::= selcollist COMMA */
-   -1,  /* (356) as ::= ID|STRING */
-   -1,  /* (357) expr ::= term */
-   -1,  /* (358) likeop ::= LIKE_KW|MATCH */
-   -1,  /* (359) exprlist ::= nexprlist */
-   -1,  /* (360) nmnum ::= plus_num */
-   -1,  /* (361) nmnum ::= nm */
-   -1,  /* (362) nmnum ::= ON */
-   -1,  /* (363) nmnum ::= DELETE */
-   -1,  /* (364) nmnum ::= DEFAULT */
-   -1,  /* (365) plus_num ::= INTEGER|FLOAT */
-    0,  /* (366) foreach_clause ::= */
-   -3,  /* (367) foreach_clause ::= FOR EACH ROW */
-   -1,  /* (368) trnm ::= nm */
-    0,  /* (369) tridxby ::= */
-   -1,  /* (370) database_kw_opt ::= DATABASE */
-    0,  /* (371) database_kw_opt ::= */
-    0,  /* (372) kwcolumn_opt ::= */
-   -1,  /* (373) kwcolumn_opt ::= COLUMNKW */
-   -1,  /* (374) vtabarglist ::= vtabarg */
-   -3,  /* (375) vtabarglist ::= vtabarglist COMMA vtabarg */
-   -2,  /* (376) vtabarg ::= vtabarg vtabargtoken */
-    0,  /* (377) anylist ::= */
-   -4,  /* (378) anylist ::= anylist LP anylist RP */
-   -2,  /* (379) anylist ::= anylist ANY */
-    0,  /* (380) with ::= */
+   -3,  /* (43) generated ::= LP expr RP */
+   -4,  /* (44) generated ::= LP expr RP ID */
+    0,  /* (45) autoinc ::= */
+   -1,  /* (46) autoinc ::= AUTOINCR */
+    0,  /* (47) refargs ::= */
+   -2,  /* (48) refargs ::= refargs refarg */
+   -2,  /* (49) refarg ::= MATCH nm */
+   -3,  /* (50) refarg ::= ON INSERT refact */
+   -3,  /* (51) refarg ::= ON DELETE refact */
+   -3,  /* (52) refarg ::= ON UPDATE refact */
+   -2,  /* (53) refact ::= SET NULL */
+   -2,  /* (54) refact ::= SET DEFAULT */
+   -1,  /* (55) refact ::= CASCADE */
+   -1,  /* (56) refact ::= RESTRICT */
+   -2,  /* (57) refact ::= NO ACTION */
+   -3,  /* (58) defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt */
+   -2,  /* (59) defer_subclause ::= DEFERRABLE init_deferred_pred_opt */
+    0,  /* (60) init_deferred_pred_opt ::= */
+   -2,  /* (61) init_deferred_pred_opt ::= INITIALLY DEFERRED */
+   -2,  /* (62) init_deferred_pred_opt ::= INITIALLY IMMEDIATE */
+    0,  /* (63) conslist_opt ::= */
+   -1,  /* (64) tconscomma ::= COMMA */
+   -2,  /* (65) tcons ::= CONSTRAINT nm */
+   -7,  /* (66) tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf */
+   -5,  /* (67) tcons ::= UNIQUE LP sortlist RP onconf */
+   -5,  /* (68) tcons ::= CHECK LP expr RP onconf */
+  -10,  /* (69) tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt */
+    0,  /* (70) defer_subclause_opt ::= */
+    0,  /* (71) onconf ::= */
+   -3,  /* (72) onconf ::= ON CONFLICT resolvetype */
+    0,  /* (73) orconf ::= */
+   -2,  /* (74) orconf ::= OR resolvetype */
+   -1,  /* (75) resolvetype ::= IGNORE */
+   -1,  /* (76) resolvetype ::= REPLACE */
+   -4,  /* (77) cmd ::= DROP TABLE ifexists fullname */
+   -2,  /* (78) ifexists ::= IF EXISTS */
+    0,  /* (79) ifexists ::= */
+   -9,  /* (80) cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select */
+   -4,  /* (81) cmd ::= DROP VIEW ifexists fullname */
+   -1,  /* (82) cmd ::= select */
+   -3,  /* (83) select ::= WITH wqlist selectnowith */
+   -4,  /* (84) select ::= WITH RECURSIVE wqlist selectnowith */
+   -1,  /* (85) select ::= selectnowith */
+   -3,  /* (86) selectnowith ::= selectnowith multiselect_op oneselect */
+   -1,  /* (87) multiselect_op ::= UNION */
+   -2,  /* (88) multiselect_op ::= UNION ALL */
+   -1,  /* (89) multiselect_op ::= EXCEPT|INTERSECT */
+   -9,  /* (90) oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt */
+  -10,  /* (91) oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt window_clause orderby_opt limit_opt */
+   -4,  /* (92) values ::= VALUES LP nexprlist RP */
+   -5,  /* (93) values ::= values COMMA LP nexprlist RP */
+   -1,  /* (94) distinct ::= DISTINCT */
+   -1,  /* (95) distinct ::= ALL */
+    0,  /* (96) distinct ::= */
+    0,  /* (97) sclp ::= */
+   -5,  /* (98) selcollist ::= sclp scanpt expr scanpt as */
+   -3,  /* (99) selcollist ::= sclp scanpt STAR */
+   -5,  /* (100) selcollist ::= sclp scanpt nm DOT STAR */
+   -2,  /* (101) as ::= AS nm */
+    0,  /* (102) as ::= */
+    0,  /* (103) from ::= */
+   -2,  /* (104) from ::= FROM seltablist */
+   -2,  /* (105) stl_prefix ::= seltablist joinop */
+    0,  /* (106) stl_prefix ::= */
+   -7,  /* (107) seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt */
+   -9,  /* (108) seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt */
+   -7,  /* (109) seltablist ::= stl_prefix LP select RP as on_opt using_opt */
+   -7,  /* (110) seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt */
+    0,  /* (111) dbnm ::= */
+   -2,  /* (112) dbnm ::= DOT nm */
+   -1,  /* (113) fullname ::= nm */
+   -3,  /* (114) fullname ::= nm DOT nm */
+   -1,  /* (115) xfullname ::= nm */
+   -3,  /* (116) xfullname ::= nm DOT nm */
+   -5,  /* (117) xfullname ::= nm DOT nm AS nm */
+   -3,  /* (118) xfullname ::= nm AS nm */
+   -1,  /* (119) joinop ::= COMMA|JOIN */
+   -2,  /* (120) joinop ::= JOIN_KW JOIN */
+   -3,  /* (121) joinop ::= JOIN_KW nm JOIN */
+   -4,  /* (122) joinop ::= JOIN_KW nm nm JOIN */
+   -2,  /* (123) on_opt ::= ON expr */
+    0,  /* (124) on_opt ::= */
+    0,  /* (125) indexed_opt ::= */
+   -3,  /* (126) indexed_opt ::= INDEXED BY nm */
+   -2,  /* (127) indexed_opt ::= NOT INDEXED */
+   -4,  /* (128) using_opt ::= USING LP idlist RP */
+    0,  /* (129) using_opt ::= */
+    0,  /* (130) orderby_opt ::= */
+   -3,  /* (131) orderby_opt ::= ORDER BY sortlist */
+   -5,  /* (132) sortlist ::= sortlist COMMA expr sortorder nulls */
+   -3,  /* (133) sortlist ::= expr sortorder nulls */
+   -1,  /* (134) sortorder ::= ASC */
+   -1,  /* (135) sortorder ::= DESC */
+    0,  /* (136) sortorder ::= */
+   -2,  /* (137) nulls ::= NULLS FIRST */
+   -2,  /* (138) nulls ::= NULLS LAST */
+    0,  /* (139) nulls ::= */
+    0,  /* (140) groupby_opt ::= */
+   -3,  /* (141) groupby_opt ::= GROUP BY nexprlist */
+    0,  /* (142) having_opt ::= */
+   -2,  /* (143) having_opt ::= HAVING expr */
+    0,  /* (144) limit_opt ::= */
+   -2,  /* (145) limit_opt ::= LIMIT expr */
+   -4,  /* (146) limit_opt ::= LIMIT expr OFFSET expr */
+   -4,  /* (147) limit_opt ::= LIMIT expr COMMA expr */
+   -6,  /* (148) cmd ::= with DELETE FROM xfullname indexed_opt where_opt */
+    0,  /* (149) where_opt ::= */
+   -2,  /* (150) where_opt ::= WHERE expr */
+   -9,  /* (151) cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist from where_opt */
+   -5,  /* (152) setlist ::= setlist COMMA nm EQ expr */
+   -7,  /* (153) setlist ::= setlist COMMA LP idlist RP EQ expr */
+   -3,  /* (154) setlist ::= nm EQ expr */
+   -5,  /* (155) setlist ::= LP idlist RP EQ expr */
+   -7,  /* (156) cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert */
+   -7,  /* (157) cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES */
+    0,  /* (158) upsert ::= */
+  -11,  /* (159) upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt */
+   -8,  /* (160) upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING */
+   -4,  /* (161) upsert ::= ON CONFLICT DO NOTHING */
+   -2,  /* (162) insert_cmd ::= INSERT orconf */
+   -1,  /* (163) insert_cmd ::= REPLACE */
+    0,  /* (164) idlist_opt ::= */
+   -3,  /* (165) idlist_opt ::= LP idlist RP */
+   -3,  /* (166) idlist ::= idlist COMMA nm */
+   -1,  /* (167) idlist ::= nm */
+   -3,  /* (168) expr ::= LP expr RP */
+   -1,  /* (169) expr ::= ID|INDEXED */
+   -1,  /* (170) expr ::= JOIN_KW */
+   -3,  /* (171) expr ::= nm DOT nm */
+   -5,  /* (172) expr ::= nm DOT nm DOT nm */
+   -1,  /* (173) term ::= NULL|FLOAT|BLOB */
+   -1,  /* (174) term ::= STRING */
+   -1,  /* (175) term ::= INTEGER */
+   -1,  /* (176) expr ::= VARIABLE */
+   -3,  /* (177) expr ::= expr COLLATE ID|STRING */
+   -6,  /* (178) expr ::= CAST LP expr AS typetoken RP */
+   -5,  /* (179) expr ::= ID|INDEXED LP distinct exprlist RP */
+   -4,  /* (180) expr ::= ID|INDEXED LP STAR RP */
+   -6,  /* (181) expr ::= ID|INDEXED LP distinct exprlist RP filter_over */
+   -5,  /* (182) expr ::= ID|INDEXED LP STAR RP filter_over */
+   -1,  /* (183) term ::= CTIME_KW */
+   -5,  /* (184) expr ::= LP nexprlist COMMA expr RP */
+   -3,  /* (185) expr ::= expr AND expr */
+   -3,  /* (186) expr ::= expr OR expr */
+   -3,  /* (187) expr ::= expr LT|GT|GE|LE expr */
+   -3,  /* (188) expr ::= expr EQ|NE expr */
+   -3,  /* (189) expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */
+   -3,  /* (190) expr ::= expr PLUS|MINUS expr */
+   -3,  /* (191) expr ::= expr STAR|SLASH|REM expr */
+   -3,  /* (192) expr ::= expr CONCAT expr */
+   -2,  /* (193) likeop ::= NOT LIKE_KW|MATCH */
+   -3,  /* (194) expr ::= expr likeop expr */
+   -5,  /* (195) expr ::= expr likeop expr ESCAPE expr */
+   -2,  /* (196) expr ::= expr ISNULL|NOTNULL */
+   -3,  /* (197) expr ::= expr NOT NULL */
+   -3,  /* (198) expr ::= expr IS expr */
+   -4,  /* (199) expr ::= expr IS NOT expr */
+   -2,  /* (200) expr ::= NOT expr */
+   -2,  /* (201) expr ::= BITNOT expr */
+   -2,  /* (202) expr ::= PLUS|MINUS expr */
+   -1,  /* (203) between_op ::= BETWEEN */
+   -2,  /* (204) between_op ::= NOT BETWEEN */
+   -5,  /* (205) expr ::= expr between_op expr AND expr */
+   -1,  /* (206) in_op ::= IN */
+   -2,  /* (207) in_op ::= NOT IN */
+   -5,  /* (208) expr ::= expr in_op LP exprlist RP */
+   -3,  /* (209) expr ::= LP select RP */
+   -5,  /* (210) expr ::= expr in_op LP select RP */
+   -5,  /* (211) expr ::= expr in_op nm dbnm paren_exprlist */
+   -4,  /* (212) expr ::= EXISTS LP select RP */
+   -5,  /* (213) expr ::= CASE case_operand case_exprlist case_else END */
+   -5,  /* (214) case_exprlist ::= case_exprlist WHEN expr THEN expr */
+   -4,  /* (215) case_exprlist ::= WHEN expr THEN expr */
+   -2,  /* (216) case_else ::= ELSE expr */
+    0,  /* (217) case_else ::= */
+   -1,  /* (218) case_operand ::= expr */
+    0,  /* (219) case_operand ::= */
+    0,  /* (220) exprlist ::= */
+   -3,  /* (221) nexprlist ::= nexprlist COMMA expr */
+   -1,  /* (222) nexprlist ::= expr */
+    0,  /* (223) paren_exprlist ::= */
+   -3,  /* (224) paren_exprlist ::= LP exprlist RP */
+  -12,  /* (225) cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt */
+   -1,  /* (226) uniqueflag ::= UNIQUE */
+    0,  /* (227) uniqueflag ::= */
+    0,  /* (228) eidlist_opt ::= */
+   -3,  /* (229) eidlist_opt ::= LP eidlist RP */
+   -5,  /* (230) eidlist ::= eidlist COMMA nm collate sortorder */
+   -3,  /* (231) eidlist ::= nm collate sortorder */
+    0,  /* (232) collate ::= */
+   -2,  /* (233) collate ::= COLLATE ID|STRING */
+   -4,  /* (234) cmd ::= DROP INDEX ifexists fullname */
+   -2,  /* (235) cmd ::= VACUUM vinto */
+   -3,  /* (236) cmd ::= VACUUM nm vinto */
+   -2,  /* (237) vinto ::= INTO expr */
+    0,  /* (238) vinto ::= */
+   -3,  /* (239) cmd ::= PRAGMA nm dbnm */
+   -5,  /* (240) cmd ::= PRAGMA nm dbnm EQ nmnum */
+   -6,  /* (241) cmd ::= PRAGMA nm dbnm LP nmnum RP */
+   -5,  /* (242) cmd ::= PRAGMA nm dbnm EQ minus_num */
+   -6,  /* (243) cmd ::= PRAGMA nm dbnm LP minus_num RP */
+   -2,  /* (244) plus_num ::= PLUS INTEGER|FLOAT */
+   -2,  /* (245) minus_num ::= MINUS INTEGER|FLOAT */
+   -5,  /* (246) cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */
+  -11,  /* (247) trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */
+   -1,  /* (248) trigger_time ::= BEFORE|AFTER */
+   -2,  /* (249) trigger_time ::= INSTEAD OF */
+    0,  /* (250) trigger_time ::= */
+   -1,  /* (251) trigger_event ::= DELETE|INSERT */
+   -1,  /* (252) trigger_event ::= UPDATE */
+   -3,  /* (253) trigger_event ::= UPDATE OF idlist */
+    0,  /* (254) when_clause ::= */
+   -2,  /* (255) when_clause ::= WHEN expr */
+   -3,  /* (256) trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */
+   -2,  /* (257) trigger_cmd_list ::= trigger_cmd SEMI */
+   -3,  /* (258) trnm ::= nm DOT nm */
+   -3,  /* (259) tridxby ::= INDEXED BY nm */
+   -2,  /* (260) tridxby ::= NOT INDEXED */
+   -9,  /* (261) trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist from where_opt scanpt */
+   -8,  /* (262) trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt */
+   -6,  /* (263) trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt */
+   -3,  /* (264) trigger_cmd ::= scanpt select scanpt */
+   -4,  /* (265) expr ::= RAISE LP IGNORE RP */
+   -6,  /* (266) expr ::= RAISE LP raisetype COMMA nm RP */
+   -1,  /* (267) raisetype ::= ROLLBACK */
+   -1,  /* (268) raisetype ::= ABORT */
+   -1,  /* (269) raisetype ::= FAIL */
+   -4,  /* (270) cmd ::= DROP TRIGGER ifexists fullname */
+   -6,  /* (271) cmd ::= ATTACH database_kw_opt expr AS expr key_opt */
+   -3,  /* (272) cmd ::= DETACH database_kw_opt expr */
+    0,  /* (273) key_opt ::= */
+   -2,  /* (274) key_opt ::= KEY expr */
+   -1,  /* (275) cmd ::= REINDEX */
+   -3,  /* (276) cmd ::= REINDEX nm dbnm */
+   -1,  /* (277) cmd ::= ANALYZE */
+   -3,  /* (278) cmd ::= ANALYZE nm dbnm */
+   -6,  /* (279) cmd ::= ALTER TABLE fullname RENAME TO nm */
+   -7,  /* (280) cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist */
+   -1,  /* (281) add_column_fullname ::= fullname */
+   -8,  /* (282) cmd ::= ALTER TABLE fullname RENAME kwcolumn_opt nm TO nm */
+   -1,  /* (283) cmd ::= create_vtab */
+   -4,  /* (284) cmd ::= create_vtab LP vtabarglist RP */
+   -8,  /* (285) create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */
+    0,  /* (286) vtabarg ::= */
+   -1,  /* (287) vtabargtoken ::= ANY */
+   -3,  /* (288) vtabargtoken ::= lp anylist RP */
+   -1,  /* (289) lp ::= LP */
+   -2,  /* (290) with ::= WITH wqlist */
+   -3,  /* (291) with ::= WITH RECURSIVE wqlist */
+   -6,  /* (292) wqlist ::= nm eidlist_opt AS LP select RP */
+   -8,  /* (293) wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP */
+   -1,  /* (294) windowdefn_list ::= windowdefn */
+   -3,  /* (295) windowdefn_list ::= windowdefn_list COMMA windowdefn */
+   -5,  /* (296) windowdefn ::= nm AS LP window RP */
+   -5,  /* (297) window ::= PARTITION BY nexprlist orderby_opt frame_opt */
+   -6,  /* (298) window ::= nm PARTITION BY nexprlist orderby_opt frame_opt */
+   -4,  /* (299) window ::= ORDER BY sortlist frame_opt */
+   -5,  /* (300) window ::= nm ORDER BY sortlist frame_opt */
+   -1,  /* (301) window ::= frame_opt */
+   -2,  /* (302) window ::= nm frame_opt */
+    0,  /* (303) frame_opt ::= */
+   -3,  /* (304) frame_opt ::= range_or_rows frame_bound_s frame_exclude_opt */
+   -6,  /* (305) frame_opt ::= range_or_rows BETWEEN frame_bound_s AND frame_bound_e frame_exclude_opt */
+   -1,  /* (306) range_or_rows ::= RANGE|ROWS|GROUPS */
+   -1,  /* (307) frame_bound_s ::= frame_bound */
+   -2,  /* (308) frame_bound_s ::= UNBOUNDED PRECEDING */
+   -1,  /* (309) frame_bound_e ::= frame_bound */
+   -2,  /* (310) frame_bound_e ::= UNBOUNDED FOLLOWING */
+   -2,  /* (311) frame_bound ::= expr PRECEDING|FOLLOWING */
+   -2,  /* (312) frame_bound ::= CURRENT ROW */
+    0,  /* (313) frame_exclude_opt ::= */
+   -2,  /* (314) frame_exclude_opt ::= EXCLUDE frame_exclude */
+   -2,  /* (315) frame_exclude ::= NO OTHERS */
+   -2,  /* (316) frame_exclude ::= CURRENT ROW */
+   -1,  /* (317) frame_exclude ::= GROUP|TIES */
+   -2,  /* (318) window_clause ::= WINDOW windowdefn_list */
+   -2,  /* (319) filter_over ::= filter_clause over_clause */
+   -1,  /* (320) filter_over ::= over_clause */
+   -1,  /* (321) filter_over ::= filter_clause */
+   -4,  /* (322) over_clause ::= OVER LP window RP */
+   -2,  /* (323) over_clause ::= OVER nm */
+   -5,  /* (324) filter_clause ::= FILTER LP WHERE expr RP */
+   -1,  /* (325) input ::= cmdlist */
+   -2,  /* (326) cmdlist ::= cmdlist ecmd */
+   -1,  /* (327) cmdlist ::= ecmd */
+   -1,  /* (328) ecmd ::= SEMI */
+   -2,  /* (329) ecmd ::= cmdx SEMI */
+   -3,  /* (330) ecmd ::= explain cmdx SEMI */
+    0,  /* (331) trans_opt ::= */
+   -1,  /* (332) trans_opt ::= TRANSACTION */
+   -2,  /* (333) trans_opt ::= TRANSACTION nm */
+   -1,  /* (334) savepoint_opt ::= SAVEPOINT */
+    0,  /* (335) savepoint_opt ::= */
+   -2,  /* (336) cmd ::= create_table create_table_args */
+   -4,  /* (337) columnlist ::= columnlist COMMA columnname carglist */
+   -2,  /* (338) columnlist ::= columnname carglist */
+   -1,  /* (339) nm ::= ID|INDEXED */
+   -1,  /* (340) nm ::= STRING */
+   -1,  /* (341) nm ::= JOIN_KW */
+   -1,  /* (342) typetoken ::= typename */
+   -1,  /* (343) typename ::= ID|STRING */
+   -1,  /* (344) signed ::= plus_num */
+   -1,  /* (345) signed ::= minus_num */
+   -2,  /* (346) carglist ::= carglist ccons */
+    0,  /* (347) carglist ::= */
+   -2,  /* (348) ccons ::= NULL onconf */
+   -4,  /* (349) ccons ::= GENERATED ALWAYS AS generated */
+   -2,  /* (350) ccons ::= AS generated */
+   -2,  /* (351) conslist_opt ::= COMMA conslist */
+   -3,  /* (352) conslist ::= conslist tconscomma tcons */
+   -1,  /* (353) conslist ::= tcons */
+    0,  /* (354) tconscomma ::= */
+   -1,  /* (355) defer_subclause_opt ::= defer_subclause */
+   -1,  /* (356) resolvetype ::= raisetype */
+   -1,  /* (357) selectnowith ::= oneselect */
+   -1,  /* (358) oneselect ::= values */
+   -2,  /* (359) sclp ::= selcollist COMMA */
+   -1,  /* (360) as ::= ID|STRING */
+   -1,  /* (361) expr ::= term */
+   -1,  /* (362) likeop ::= LIKE_KW|MATCH */
+   -1,  /* (363) exprlist ::= nexprlist */
+   -1,  /* (364) nmnum ::= plus_num */
+   -1,  /* (365) nmnum ::= nm */
+   -1,  /* (366) nmnum ::= ON */
+   -1,  /* (367) nmnum ::= DELETE */
+   -1,  /* (368) nmnum ::= DEFAULT */
+   -1,  /* (369) plus_num ::= INTEGER|FLOAT */
+    0,  /* (370) foreach_clause ::= */
+   -3,  /* (371) foreach_clause ::= FOR EACH ROW */
+   -1,  /* (372) trnm ::= nm */
+    0,  /* (373) tridxby ::= */
+   -1,  /* (374) database_kw_opt ::= DATABASE */
+    0,  /* (375) database_kw_opt ::= */
+    0,  /* (376) kwcolumn_opt ::= */
+   -1,  /* (377) kwcolumn_opt ::= COLUMNKW */
+   -1,  /* (378) vtabarglist ::= vtabarg */
+   -3,  /* (379) vtabarglist ::= vtabarglist COMMA vtabarg */
+   -2,  /* (380) vtabarg ::= vtabarg vtabargtoken */
+    0,  /* (381) anylist ::= */
+   -4,  /* (382) anylist ::= anylist LP anylist RP */
+   -2,  /* (383) anylist ::= anylist ANY */
+    0,  /* (384) with ::= */
 };
 
 static void yy_accept(yyParser*);  /* Forward Declaration */
@@ -157386,12 +162358,15 @@ static YYACTIONTYPE yy_reduce(
   if( yyTraceFILE && yyruleno<(int)(sizeof(yyRuleName)/sizeof(yyRuleName[0])) ){
     yysize = yyRuleInfoNRhs[yyruleno];
     if( yysize ){
-      fprintf(yyTraceFILE, "%sReduce %d [%s], go to state %d.\n",
+      fprintf(yyTraceFILE, "%sReduce %d [%s]%s, pop back to state %d.\n",
         yyTracePrompt,
-        yyruleno, yyRuleName[yyruleno], yymsp[yysize].stateno);
+        yyruleno, yyRuleName[yyruleno],
+        yyruleno<YYNRULE_WITH_ACTION ? "" : " without external action",
+        yymsp[yysize].stateno);
     }else{
-      fprintf(yyTraceFILE, "%sReduce %d [%s].\n",
-        yyTracePrompt, yyruleno, yyRuleName[yyruleno]);
+      fprintf(yyTraceFILE, "%sReduce %d [%s]%s.\n",
+        yyTracePrompt, yyruleno, yyRuleName[yyruleno],
+        yyruleno<YYNRULE_WITH_ACTION ? "" : " without external action");
     }
   }
 #endif /* NDEBUG */
@@ -157449,16 +162424,16 @@ static YYACTIONTYPE yy_reduce(
 { sqlite3FinishCoding(pParse); }
         break;
       case 3: /* cmd ::= BEGIN transtype trans_opt */
-{sqlite3BeginTransaction(pParse, yymsp[-1].minor.yy32);}
+{sqlite3BeginTransaction(pParse, yymsp[-1].minor.yy192);}
         break;
       case 4: /* transtype ::= */
-{yymsp[1].minor.yy32 = TK_DEFERRED;}
+{yymsp[1].minor.yy192 = TK_DEFERRED;}
         break;
       case 5: /* transtype ::= DEFERRED */
       case 6: /* transtype ::= IMMEDIATE */ yytestcase(yyruleno==6);
       case 7: /* transtype ::= EXCLUSIVE */ yytestcase(yyruleno==7);
-      case 304: /* range_or_rows ::= RANGE|ROWS|GROUPS */ yytestcase(yyruleno==304);
-{yymsp[0].minor.yy32 = yymsp[0].major; /*A-overwrites-X*/}
+      case 306: /* range_or_rows ::= RANGE|ROWS|GROUPS */ yytestcase(yyruleno==306);
+{yymsp[0].minor.yy192 = yymsp[0].major; /*A-overwrites-X*/}
         break;
       case 8: /* cmd ::= COMMIT|END trans_opt */
       case 9: /* cmd ::= ROLLBACK trans_opt */ yytestcase(yyruleno==9);
@@ -157481,7 +162456,7 @@ static YYACTIONTYPE yy_reduce(
         break;
       case 13: /* create_table ::= createkw temp TABLE ifnotexists nm dbnm */
 {
-   sqlite3StartTable(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0,yymsp[-4].minor.yy32,0,0,yymsp[-2].minor.yy32);
+   sqlite3StartTable(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0,yymsp[-4].minor.yy192,0,0,yymsp[-2].minor.yy192);
 }
         break;
       case 14: /* createkw ::= CREATE */
@@ -157490,38 +162465,38 @@ static YYACTIONTYPE yy_reduce(
       case 15: /* ifnotexists ::= */
       case 18: /* temp ::= */ yytestcase(yyruleno==18);
       case 21: /* table_options ::= */ yytestcase(yyruleno==21);
-      case 43: /* autoinc ::= */ yytestcase(yyruleno==43);
-      case 58: /* init_deferred_pred_opt ::= */ yytestcase(yyruleno==58);
-      case 68: /* defer_subclause_opt ::= */ yytestcase(yyruleno==68);
-      case 77: /* ifexists ::= */ yytestcase(yyruleno==77);
-      case 94: /* distinct ::= */ yytestcase(yyruleno==94);
-      case 230: /* collate ::= */ yytestcase(yyruleno==230);
-{yymsp[1].minor.yy32 = 0;}
+      case 45: /* autoinc ::= */ yytestcase(yyruleno==45);
+      case 60: /* init_deferred_pred_opt ::= */ yytestcase(yyruleno==60);
+      case 70: /* defer_subclause_opt ::= */ yytestcase(yyruleno==70);
+      case 79: /* ifexists ::= */ yytestcase(yyruleno==79);
+      case 96: /* distinct ::= */ yytestcase(yyruleno==96);
+      case 232: /* collate ::= */ yytestcase(yyruleno==232);
+{yymsp[1].minor.yy192 = 0;}
         break;
       case 16: /* ifnotexists ::= IF NOT EXISTS */
-{yymsp[-2].minor.yy32 = 1;}
+{yymsp[-2].minor.yy192 = 1;}
         break;
       case 17: /* temp ::= TEMP */
-      case 44: /* autoinc ::= AUTOINCR */ yytestcase(yyruleno==44);
-{yymsp[0].minor.yy32 = 1;}
+      case 46: /* autoinc ::= AUTOINCR */ yytestcase(yyruleno==46);
+{yymsp[0].minor.yy192 = 1;}
         break;
       case 19: /* create_table_args ::= LP columnlist conslist_opt RP table_options */
 {
-  sqlite3EndTable(pParse,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0,yymsp[0].minor.yy32,0);
+  sqlite3EndTable(pParse,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0,yymsp[0].minor.yy192,0);
 }
         break;
       case 20: /* create_table_args ::= AS select */
 {
-  sqlite3EndTable(pParse,0,0,0,yymsp[0].minor.yy25);
-  sqlite3SelectDelete(pParse->db, yymsp[0].minor.yy25);
+  sqlite3EndTable(pParse,0,0,0,yymsp[0].minor.yy539);
+  sqlite3SelectDelete(pParse->db, yymsp[0].minor.yy539);
 }
         break;
       case 22: /* table_options ::= WITHOUT nm */
 {
   if( yymsp[0].minor.yy0.n==5 && sqlite3_strnicmp(yymsp[0].minor.yy0.z,"rowid",5)==0 ){
-    yymsp[-1].minor.yy32 = TF_WithoutRowid | TF_NoVisibleRowid;
+    yymsp[-1].minor.yy192 = TF_WithoutRowid | TF_NoVisibleRowid;
   }else{
-    yymsp[-1].minor.yy32 = 0;
+    yymsp[-1].minor.yy192 = 0;
     sqlite3ErrorMsg(pParse, "unknown table option: %.*s", yymsp[0].minor.yy0.n, yymsp[0].minor.yy0.z);
   }
 }
@@ -157530,8 +162505,8 @@ static YYACTIONTYPE yy_reduce(
 {sqlite3AddColumn(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0);}
         break;
       case 24: /* typetoken ::= */
-      case 61: /* conslist_opt ::= */ yytestcase(yyruleno==61);
-      case 100: /* as ::= */ yytestcase(yyruleno==100);
+      case 63: /* conslist_opt ::= */ yytestcase(yyruleno==63);
+      case 102: /* as ::= */ yytestcase(yyruleno==102);
 {yymsp[1].minor.yy0.n = 0; yymsp[1].minor.yy0.z = 0;}
         break;
       case 25: /* typetoken ::= typename LP signed RP */
@@ -157550,7 +162525,7 @@ static YYACTIONTYPE yy_reduce(
       case 28: /* scanpt ::= */
 {
   assert( yyLookahead!=YYNOCODE );
-  yymsp[1].minor.yy8 = yyLookaheadToken.z;
+  yymsp[1].minor.yy436 = yyLookaheadToken.z;
 }
         break;
       case 29: /* scantok ::= */
@@ -157560,21 +162535,21 @@ static YYACTIONTYPE yy_reduce(
 }
         break;
       case 30: /* ccons ::= CONSTRAINT nm */
-      case 63: /* tcons ::= CONSTRAINT nm */ yytestcase(yyruleno==63);
+      case 65: /* tcons ::= CONSTRAINT nm */ yytestcase(yyruleno==65);
 {pParse->constraintName = yymsp[0].minor.yy0;}
         break;
       case 31: /* ccons ::= DEFAULT scantok term */
-{sqlite3AddDefaultValue(pParse,yymsp[0].minor.yy46,yymsp[-1].minor.yy0.z,&yymsp[-1].minor.yy0.z[yymsp[-1].minor.yy0.n]);}
+{sqlite3AddDefaultValue(pParse,yymsp[0].minor.yy202,yymsp[-1].minor.yy0.z,&yymsp[-1].minor.yy0.z[yymsp[-1].minor.yy0.n]);}
         break;
       case 32: /* ccons ::= DEFAULT LP expr RP */
-{sqlite3AddDefaultValue(pParse,yymsp[-1].minor.yy46,yymsp[-2].minor.yy0.z+1,yymsp[0].minor.yy0.z);}
+{sqlite3AddDefaultValue(pParse,yymsp[-1].minor.yy202,yymsp[-2].minor.yy0.z+1,yymsp[0].minor.yy0.z);}
         break;
       case 33: /* ccons ::= DEFAULT PLUS scantok term */
-{sqlite3AddDefaultValue(pParse,yymsp[0].minor.yy46,yymsp[-2].minor.yy0.z,&yymsp[-1].minor.yy0.z[yymsp[-1].minor.yy0.n]);}
+{sqlite3AddDefaultValue(pParse,yymsp[0].minor.yy202,yymsp[-2].minor.yy0.z,&yymsp[-1].minor.yy0.z[yymsp[-1].minor.yy0.n]);}
         break;
       case 34: /* ccons ::= DEFAULT MINUS scantok term */
 {
-  Expr *p = sqlite3PExpr(pParse, TK_UMINUS, yymsp[0].minor.yy46, 0);
+  Expr *p = sqlite3PExpr(pParse, TK_UMINUS, yymsp[0].minor.yy202, 0);
   sqlite3AddDefaultValue(pParse,p,yymsp[-2].minor.yy0.z,&yymsp[-1].minor.yy0.z[yymsp[-1].minor.yy0.n]);
 }
         break;
@@ -157589,170 +162564,176 @@ static YYACTIONTYPE yy_reduce(
 }
         break;
       case 36: /* ccons ::= NOT NULL onconf */
-{sqlite3AddNotNull(pParse, yymsp[0].minor.yy32);}
+{sqlite3AddNotNull(pParse, yymsp[0].minor.yy192);}
         break;
       case 37: /* ccons ::= PRIMARY KEY sortorder onconf autoinc */
-{sqlite3AddPrimaryKey(pParse,0,yymsp[-1].minor.yy32,yymsp[0].minor.yy32,yymsp[-2].minor.yy32);}
+{sqlite3AddPrimaryKey(pParse,0,yymsp[-1].minor.yy192,yymsp[0].minor.yy192,yymsp[-2].minor.yy192);}
         break;
       case 38: /* ccons ::= UNIQUE onconf */
-{sqlite3CreateIndex(pParse,0,0,0,0,yymsp[0].minor.yy32,0,0,0,0,
+{sqlite3CreateIndex(pParse,0,0,0,0,yymsp[0].minor.yy192,0,0,0,0,
                                    SQLITE_IDXTYPE_UNIQUE);}
         break;
       case 39: /* ccons ::= CHECK LP expr RP */
-{sqlite3AddCheckConstraint(pParse,yymsp[-1].minor.yy46);}
+{sqlite3AddCheckConstraint(pParse,yymsp[-1].minor.yy202);}
         break;
       case 40: /* ccons ::= REFERENCES nm eidlist_opt refargs */
-{sqlite3CreateForeignKey(pParse,0,&yymsp[-2].minor.yy0,yymsp[-1].minor.yy138,yymsp[0].minor.yy32);}
+{sqlite3CreateForeignKey(pParse,0,&yymsp[-2].minor.yy0,yymsp[-1].minor.yy242,yymsp[0].minor.yy192);}
         break;
       case 41: /* ccons ::= defer_subclause */
-{sqlite3DeferForeignKey(pParse,yymsp[0].minor.yy32);}
+{sqlite3DeferForeignKey(pParse,yymsp[0].minor.yy192);}
         break;
       case 42: /* ccons ::= COLLATE ID|STRING */
 {sqlite3AddCollateType(pParse, &yymsp[0].minor.yy0);}
         break;
-      case 45: /* refargs ::= */
-{ yymsp[1].minor.yy32 = OE_None*0x0101; /* EV: R-19803-45884 */}
+      case 43: /* generated ::= LP expr RP */
+{sqlite3AddGenerated(pParse,yymsp[-1].minor.yy202,0);}
+        break;
+      case 44: /* generated ::= LP expr RP ID */
+{sqlite3AddGenerated(pParse,yymsp[-2].minor.yy202,&yymsp[0].minor.yy0);}
         break;
-      case 46: /* refargs ::= refargs refarg */
-{ yymsp[-1].minor.yy32 = (yymsp[-1].minor.yy32 & ~yymsp[0].minor.yy495.mask) | yymsp[0].minor.yy495.value; }
+      case 47: /* refargs ::= */
+{ yymsp[1].minor.yy192 = OE_None*0x0101; /* EV: R-19803-45884 */}
         break;
-      case 47: /* refarg ::= MATCH nm */
-{ yymsp[-1].minor.yy495.value = 0;     yymsp[-1].minor.yy495.mask = 0x000000; }
+      case 48: /* refargs ::= refargs refarg */
+{ yymsp[-1].minor.yy192 = (yymsp[-1].minor.yy192 & ~yymsp[0].minor.yy207.mask) | yymsp[0].minor.yy207.value; }
         break;
-      case 48: /* refarg ::= ON INSERT refact */
-{ yymsp[-2].minor.yy495.value = 0;     yymsp[-2].minor.yy495.mask = 0x000000; }
+      case 49: /* refarg ::= MATCH nm */
+{ yymsp[-1].minor.yy207.value = 0;     yymsp[-1].minor.yy207.mask = 0x000000; }
         break;
-      case 49: /* refarg ::= ON DELETE refact */
-{ yymsp[-2].minor.yy495.value = yymsp[0].minor.yy32;     yymsp[-2].minor.yy495.mask = 0x0000ff; }
+      case 50: /* refarg ::= ON INSERT refact */
+{ yymsp[-2].minor.yy207.value = 0;     yymsp[-2].minor.yy207.mask = 0x000000; }
         break;
-      case 50: /* refarg ::= ON UPDATE refact */
-{ yymsp[-2].minor.yy495.value = yymsp[0].minor.yy32<<8;  yymsp[-2].minor.yy495.mask = 0x00ff00; }
+      case 51: /* refarg ::= ON DELETE refact */
+{ yymsp[-2].minor.yy207.value = yymsp[0].minor.yy192;     yymsp[-2].minor.yy207.mask = 0x0000ff; }
         break;
-      case 51: /* refact ::= SET NULL */
-{ yymsp[-1].minor.yy32 = OE_SetNull;  /* EV: R-33326-45252 */}
+      case 52: /* refarg ::= ON UPDATE refact */
+{ yymsp[-2].minor.yy207.value = yymsp[0].minor.yy192<<8;  yymsp[-2].minor.yy207.mask = 0x00ff00; }
         break;
-      case 52: /* refact ::= SET DEFAULT */
-{ yymsp[-1].minor.yy32 = OE_SetDflt;  /* EV: R-33326-45252 */}
+      case 53: /* refact ::= SET NULL */
+{ yymsp[-1].minor.yy192 = OE_SetNull;  /* EV: R-33326-45252 */}
         break;
-      case 53: /* refact ::= CASCADE */
-{ yymsp[0].minor.yy32 = OE_Cascade;  /* EV: R-33326-45252 */}
+      case 54: /* refact ::= SET DEFAULT */
+{ yymsp[-1].minor.yy192 = OE_SetDflt;  /* EV: R-33326-45252 */}
         break;
-      case 54: /* refact ::= RESTRICT */
-{ yymsp[0].minor.yy32 = OE_Restrict; /* EV: R-33326-45252 */}
+      case 55: /* refact ::= CASCADE */
+{ yymsp[0].minor.yy192 = OE_Cascade;  /* EV: R-33326-45252 */}
         break;
-      case 55: /* refact ::= NO ACTION */
-{ yymsp[-1].minor.yy32 = OE_None;     /* EV: R-33326-45252 */}
+      case 56: /* refact ::= RESTRICT */
+{ yymsp[0].minor.yy192 = OE_Restrict; /* EV: R-33326-45252 */}
         break;
-      case 56: /* defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt */
-{yymsp[-2].minor.yy32 = 0;}
+      case 57: /* refact ::= NO ACTION */
+{ yymsp[-1].minor.yy192 = OE_None;     /* EV: R-33326-45252 */}
         break;
-      case 57: /* defer_subclause ::= DEFERRABLE init_deferred_pred_opt */
-      case 72: /* orconf ::= OR resolvetype */ yytestcase(yyruleno==72);
-      case 160: /* insert_cmd ::= INSERT orconf */ yytestcase(yyruleno==160);
-{yymsp[-1].minor.yy32 = yymsp[0].minor.yy32;}
+      case 58: /* defer_subclause ::= NOT DEFERRABLE init_deferred_pred_opt */
+{yymsp[-2].minor.yy192 = 0;}
         break;
-      case 59: /* init_deferred_pred_opt ::= INITIALLY DEFERRED */
-      case 76: /* ifexists ::= IF EXISTS */ yytestcase(yyruleno==76);
-      case 202: /* between_op ::= NOT BETWEEN */ yytestcase(yyruleno==202);
-      case 205: /* in_op ::= NOT IN */ yytestcase(yyruleno==205);
-      case 231: /* collate ::= COLLATE ID|STRING */ yytestcase(yyruleno==231);
-{yymsp[-1].minor.yy32 = 1;}
+      case 59: /* defer_subclause ::= DEFERRABLE init_deferred_pred_opt */
+      case 74: /* orconf ::= OR resolvetype */ yytestcase(yyruleno==74);
+      case 162: /* insert_cmd ::= INSERT orconf */ yytestcase(yyruleno==162);
+{yymsp[-1].minor.yy192 = yymsp[0].minor.yy192;}
         break;
-      case 60: /* init_deferred_pred_opt ::= INITIALLY IMMEDIATE */
-{yymsp[-1].minor.yy32 = 0;}
+      case 61: /* init_deferred_pred_opt ::= INITIALLY DEFERRED */
+      case 78: /* ifexists ::= IF EXISTS */ yytestcase(yyruleno==78);
+      case 204: /* between_op ::= NOT BETWEEN */ yytestcase(yyruleno==204);
+      case 207: /* in_op ::= NOT IN */ yytestcase(yyruleno==207);
+      case 233: /* collate ::= COLLATE ID|STRING */ yytestcase(yyruleno==233);
+{yymsp[-1].minor.yy192 = 1;}
         break;
-      case 62: /* tconscomma ::= COMMA */
+      case 62: /* init_deferred_pred_opt ::= INITIALLY IMMEDIATE */
+{yymsp[-1].minor.yy192 = 0;}
+        break;
+      case 64: /* tconscomma ::= COMMA */
 {pParse->constraintName.n = 0;}
         break;
-      case 64: /* tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf */
-{sqlite3AddPrimaryKey(pParse,yymsp[-3].minor.yy138,yymsp[0].minor.yy32,yymsp[-2].minor.yy32,0);}
+      case 66: /* tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf */
+{sqlite3AddPrimaryKey(pParse,yymsp[-3].minor.yy242,yymsp[0].minor.yy192,yymsp[-2].minor.yy192,0);}
         break;
-      case 65: /* tcons ::= UNIQUE LP sortlist RP onconf */
-{sqlite3CreateIndex(pParse,0,0,0,yymsp[-2].minor.yy138,yymsp[0].minor.yy32,0,0,0,0,
+      case 67: /* tcons ::= UNIQUE LP sortlist RP onconf */
+{sqlite3CreateIndex(pParse,0,0,0,yymsp[-2].minor.yy242,yymsp[0].minor.yy192,0,0,0,0,
                                        SQLITE_IDXTYPE_UNIQUE);}
         break;
-      case 66: /* tcons ::= CHECK LP expr RP onconf */
-{sqlite3AddCheckConstraint(pParse,yymsp[-2].minor.yy46);}
+      case 68: /* tcons ::= CHECK LP expr RP onconf */
+{sqlite3AddCheckConstraint(pParse,yymsp[-2].minor.yy202);}
         break;
-      case 67: /* tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt */
+      case 69: /* tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt */
 {
-    sqlite3CreateForeignKey(pParse, yymsp[-6].minor.yy138, &yymsp[-3].minor.yy0, yymsp[-2].minor.yy138, yymsp[-1].minor.yy32);
-    sqlite3DeferForeignKey(pParse, yymsp[0].minor.yy32);
+    sqlite3CreateForeignKey(pParse, yymsp[-6].minor.yy242, &yymsp[-3].minor.yy0, yymsp[-2].minor.yy242, yymsp[-1].minor.yy192);
+    sqlite3DeferForeignKey(pParse, yymsp[0].minor.yy192);
 }
         break;
-      case 69: /* onconf ::= */
-      case 71: /* orconf ::= */ yytestcase(yyruleno==71);
-{yymsp[1].minor.yy32 = OE_Default;}
+      case 71: /* onconf ::= */
+      case 73: /* orconf ::= */ yytestcase(yyruleno==73);
+{yymsp[1].minor.yy192 = OE_Default;}
         break;
-      case 70: /* onconf ::= ON CONFLICT resolvetype */
-{yymsp[-2].minor.yy32 = yymsp[0].minor.yy32;}
+      case 72: /* onconf ::= ON CONFLICT resolvetype */
+{yymsp[-2].minor.yy192 = yymsp[0].minor.yy192;}
         break;
-      case 73: /* resolvetype ::= IGNORE */
-{yymsp[0].minor.yy32 = OE_Ignore;}
+      case 75: /* resolvetype ::= IGNORE */
+{yymsp[0].minor.yy192 = OE_Ignore;}
         break;
-      case 74: /* resolvetype ::= REPLACE */
-      case 161: /* insert_cmd ::= REPLACE */ yytestcase(yyruleno==161);
-{yymsp[0].minor.yy32 = OE_Replace;}
+      case 76: /* resolvetype ::= REPLACE */
+      case 163: /* insert_cmd ::= REPLACE */ yytestcase(yyruleno==163);
+{yymsp[0].minor.yy192 = OE_Replace;}
         break;
-      case 75: /* cmd ::= DROP TABLE ifexists fullname */
+      case 77: /* cmd ::= DROP TABLE ifexists fullname */
 {
-  sqlite3DropTable(pParse, yymsp[0].minor.yy609, 0, yymsp[-1].minor.yy32);
+  sqlite3DropTable(pParse, yymsp[0].minor.yy47, 0, yymsp[-1].minor.yy192);
 }
         break;
-      case 78: /* cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select */
+      case 80: /* cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select */
 {
-  sqlite3CreateView(pParse, &yymsp[-8].minor.yy0, &yymsp[-4].minor.yy0, &yymsp[-3].minor.yy0, yymsp[-2].minor.yy138, yymsp[0].minor.yy25, yymsp[-7].minor.yy32, yymsp[-5].minor.yy32);
+  sqlite3CreateView(pParse, &yymsp[-8].minor.yy0, &yymsp[-4].minor.yy0, &yymsp[-3].minor.yy0, yymsp[-2].minor.yy242, yymsp[0].minor.yy539, yymsp[-7].minor.yy192, yymsp[-5].minor.yy192);
 }
         break;
-      case 79: /* cmd ::= DROP VIEW ifexists fullname */
+      case 81: /* cmd ::= DROP VIEW ifexists fullname */
 {
-  sqlite3DropTable(pParse, yymsp[0].minor.yy609, 1, yymsp[-1].minor.yy32);
+  sqlite3DropTable(pParse, yymsp[0].minor.yy47, 1, yymsp[-1].minor.yy192);
 }
         break;
-      case 80: /* cmd ::= select */
+      case 82: /* cmd ::= select */
 {
-  SelectDest dest = {SRT_Output, 0, 0, 0, 0, 0};
-  sqlite3Select(pParse, yymsp[0].minor.yy25, &dest);
-  sqlite3SelectDelete(pParse->db, yymsp[0].minor.yy25);
+  SelectDest dest = {SRT_Output, 0, 0, 0, 0, 0, 0};
+  sqlite3Select(pParse, yymsp[0].minor.yy539, &dest);
+  sqlite3SelectDelete(pParse->db, yymsp[0].minor.yy539);
 }
         break;
-      case 81: /* select ::= WITH wqlist selectnowith */
+      case 83: /* select ::= WITH wqlist selectnowith */
 {
-  Select *p = yymsp[0].minor.yy25;
+  Select *p = yymsp[0].minor.yy539;
   if( p ){
-    p->pWith = yymsp[-1].minor.yy297;
+    p->pWith = yymsp[-1].minor.yy131;
     parserDoubleLinkSelect(pParse, p);
   }else{
-    sqlite3WithDelete(pParse->db, yymsp[-1].minor.yy297);
+    sqlite3WithDelete(pParse->db, yymsp[-1].minor.yy131);
   }
-  yymsp[-2].minor.yy25 = p;
+  yymsp[-2].minor.yy539 = p;
 }
         break;
-      case 82: /* select ::= WITH RECURSIVE wqlist selectnowith */
+      case 84: /* select ::= WITH RECURSIVE wqlist selectnowith */
 {
-  Select *p = yymsp[0].minor.yy25;
+  Select *p = yymsp[0].minor.yy539;
   if( p ){
-    p->pWith = yymsp[-1].minor.yy297;
+    p->pWith = yymsp[-1].minor.yy131;
     parserDoubleLinkSelect(pParse, p);
   }else{
-    sqlite3WithDelete(pParse->db, yymsp[-1].minor.yy297);
+    sqlite3WithDelete(pParse->db, yymsp[-1].minor.yy131);
   }
-  yymsp[-3].minor.yy25 = p;
+  yymsp[-3].minor.yy539 = p;
 }
         break;
-      case 83: /* select ::= selectnowith */
+      case 85: /* select ::= selectnowith */
 {
-  Select *p = yymsp[0].minor.yy25;
+  Select *p = yymsp[0].minor.yy539;
   if( p ){
     parserDoubleLinkSelect(pParse, p);
   }
-  yymsp[0].minor.yy25 = p; /*A-overwrites-X*/
+  yymsp[0].minor.yy539 = p; /*A-overwrites-X*/
 }
         break;
-      case 84: /* selectnowith ::= selectnowith multiselect_op oneselect */
+      case 86: /* selectnowith ::= selectnowith multiselect_op oneselect */
 {
-  Select *pRhs = yymsp[0].minor.yy25;
-  Select *pLhs = yymsp[-2].minor.yy25;
+  Select *pRhs = yymsp[0].minor.yy539;
+  Select *pLhs = yymsp[-2].minor.yy539;
   if( pRhs && pRhs->pPrior ){
     SrcList *pFrom;
     Token x;
@@ -157762,142 +162743,140 @@ static YYACTIONTYPE yy_reduce(
     pRhs = sqlite3SelectNew(pParse,0,pFrom,0,0,0,0,0,0);
   }
   if( pRhs ){
-    pRhs->op = (u8)yymsp[-1].minor.yy32;
+    pRhs->op = (u8)yymsp[-1].minor.yy192;
     pRhs->pPrior = pLhs;
     if( ALWAYS(pLhs) ) pLhs->selFlags &= ~SF_MultiValue;
     pRhs->selFlags &= ~SF_MultiValue;
-    if( yymsp[-1].minor.yy32!=TK_ALL ) pParse->hasCompound = 1;
+    if( yymsp[-1].minor.yy192!=TK_ALL ) pParse->hasCompound = 1;
   }else{
     sqlite3SelectDelete(pParse->db, pLhs);
   }
-  yymsp[-2].minor.yy25 = pRhs;
+  yymsp[-2].minor.yy539 = pRhs;
 }
         break;
-      case 85: /* multiselect_op ::= UNION */
-      case 87: /* multiselect_op ::= EXCEPT|INTERSECT */ yytestcase(yyruleno==87);
-{yymsp[0].minor.yy32 = yymsp[0].major; /*A-overwrites-OP*/}
+      case 87: /* multiselect_op ::= UNION */
+      case 89: /* multiselect_op ::= EXCEPT|INTERSECT */ yytestcase(yyruleno==89);
+{yymsp[0].minor.yy192 = yymsp[0].major; /*A-overwrites-OP*/}
         break;
-      case 86: /* multiselect_op ::= UNION ALL */
-{yymsp[-1].minor.yy32 = TK_ALL;}
+      case 88: /* multiselect_op ::= UNION ALL */
+{yymsp[-1].minor.yy192 = TK_ALL;}
         break;
-      case 88: /* oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt */
+      case 90: /* oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt orderby_opt limit_opt */
 {
-  yymsp[-8].minor.yy25 = sqlite3SelectNew(pParse,yymsp[-6].minor.yy138,yymsp[-5].minor.yy609,yymsp[-4].minor.yy46,yymsp[-3].minor.yy138,yymsp[-2].minor.yy46,yymsp[-1].minor.yy138,yymsp[-7].minor.yy32,yymsp[0].minor.yy46);
+  yymsp[-8].minor.yy539 = sqlite3SelectNew(pParse,yymsp[-6].minor.yy242,yymsp[-5].minor.yy47,yymsp[-4].minor.yy202,yymsp[-3].minor.yy242,yymsp[-2].minor.yy202,yymsp[-1].minor.yy242,yymsp[-7].minor.yy192,yymsp[0].minor.yy202);
 }
         break;
-      case 89: /* oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt window_clause orderby_opt limit_opt */
+      case 91: /* oneselect ::= SELECT distinct selcollist from where_opt groupby_opt having_opt window_clause orderby_opt limit_opt */
 {
-  yymsp[-9].minor.yy25 = sqlite3SelectNew(pParse,yymsp[-7].minor.yy138,yymsp[-6].minor.yy609,yymsp[-5].minor.yy46,yymsp[-4].minor.yy138,yymsp[-3].minor.yy46,yymsp[-1].minor.yy138,yymsp[-8].minor.yy32,yymsp[0].minor.yy46);
-  if( yymsp[-9].minor.yy25 ){
-    yymsp[-9].minor.yy25->pWinDefn = yymsp[-2].minor.yy455;
+  yymsp[-9].minor.yy539 = sqlite3SelectNew(pParse,yymsp[-7].minor.yy242,yymsp[-6].minor.yy47,yymsp[-5].minor.yy202,yymsp[-4].minor.yy242,yymsp[-3].minor.yy202,yymsp[-1].minor.yy242,yymsp[-8].minor.yy192,yymsp[0].minor.yy202);
+  if( yymsp[-9].minor.yy539 ){
+    yymsp[-9].minor.yy539->pWinDefn = yymsp[-2].minor.yy303;
   }else{
-    sqlite3WindowListDelete(pParse->db, yymsp[-2].minor.yy455);
+    sqlite3WindowListDelete(pParse->db, yymsp[-2].minor.yy303);
   }
 }
         break;
-      case 90: /* values ::= VALUES LP nexprlist RP */
+      case 92: /* values ::= VALUES LP nexprlist RP */
 {
-  yymsp[-3].minor.yy25 = sqlite3SelectNew(pParse,yymsp[-1].minor.yy138,0,0,0,0,0,SF_Values,0);
+  yymsp[-3].minor.yy539 = sqlite3SelectNew(pParse,yymsp[-1].minor.yy242,0,0,0,0,0,SF_Values,0);
 }
         break;
-      case 91: /* values ::= values COMMA LP nexprlist RP */
+      case 93: /* values ::= values COMMA LP nexprlist RP */
 {
-  Select *pRight, *pLeft = yymsp[-4].minor.yy25;
-  pRight = sqlite3SelectNew(pParse,yymsp[-1].minor.yy138,0,0,0,0,0,SF_Values|SF_MultiValue,0);
+  Select *pRight, *pLeft = yymsp[-4].minor.yy539;
+  pRight = sqlite3SelectNew(pParse,yymsp[-1].minor.yy242,0,0,0,0,0,SF_Values|SF_MultiValue,0);
   if( ALWAYS(pLeft) ) pLeft->selFlags &= ~SF_MultiValue;
   if( pRight ){
     pRight->op = TK_ALL;
     pRight->pPrior = pLeft;
-    yymsp[-4].minor.yy25 = pRight;
+    yymsp[-4].minor.yy539 = pRight;
   }else{
-    yymsp[-4].minor.yy25 = pLeft;
+    yymsp[-4].minor.yy539 = pLeft;
   }
 }
         break;
-      case 92: /* distinct ::= DISTINCT */
-{yymsp[0].minor.yy32 = SF_Distinct;}
+      case 94: /* distinct ::= DISTINCT */
+{yymsp[0].minor.yy192 = SF_Distinct;}
         break;
-      case 93: /* distinct ::= ALL */
-{yymsp[0].minor.yy32 = SF_All;}
+      case 95: /* distinct ::= ALL */
+{yymsp[0].minor.yy192 = SF_All;}
         break;
-      case 95: /* sclp ::= */
-      case 128: /* orderby_opt ::= */ yytestcase(yyruleno==128);
-      case 138: /* groupby_opt ::= */ yytestcase(yyruleno==138);
-      case 218: /* exprlist ::= */ yytestcase(yyruleno==218);
-      case 221: /* paren_exprlist ::= */ yytestcase(yyruleno==221);
-      case 226: /* eidlist_opt ::= */ yytestcase(yyruleno==226);
-{yymsp[1].minor.yy138 = 0;}
+      case 97: /* sclp ::= */
+      case 130: /* orderby_opt ::= */ yytestcase(yyruleno==130);
+      case 140: /* groupby_opt ::= */ yytestcase(yyruleno==140);
+      case 220: /* exprlist ::= */ yytestcase(yyruleno==220);
+      case 223: /* paren_exprlist ::= */ yytestcase(yyruleno==223);
+      case 228: /* eidlist_opt ::= */ yytestcase(yyruleno==228);
+{yymsp[1].minor.yy242 = 0;}
         break;
-      case 96: /* selcollist ::= sclp scanpt expr scanpt as */
+      case 98: /* selcollist ::= sclp scanpt expr scanpt as */
 {
-   yymsp[-4].minor.yy138 = sqlite3ExprListAppend(pParse, yymsp[-4].minor.yy138, yymsp[-2].minor.yy46);
-   if( yymsp[0].minor.yy0.n>0 ) sqlite3ExprListSetName(pParse, yymsp[-4].minor.yy138, &yymsp[0].minor.yy0, 1);
-   sqlite3ExprListSetSpan(pParse,yymsp[-4].minor.yy138,yymsp[-3].minor.yy8,yymsp[-1].minor.yy8);
+   yymsp[-4].minor.yy242 = sqlite3ExprListAppend(pParse, yymsp[-4].minor.yy242, yymsp[-2].minor.yy202);
+   if( yymsp[0].minor.yy0.n>0 ) sqlite3ExprListSetName(pParse, yymsp[-4].minor.yy242, &yymsp[0].minor.yy0, 1);
+   sqlite3ExprListSetSpan(pParse,yymsp[-4].minor.yy242,yymsp[-3].minor.yy436,yymsp[-1].minor.yy436);
 }
         break;
-      case 97: /* selcollist ::= sclp scanpt STAR */
+      case 99: /* selcollist ::= sclp scanpt STAR */
 {
   Expr *p = sqlite3Expr(pParse->db, TK_ASTERISK, 0);
-  yymsp[-2].minor.yy138 = sqlite3ExprListAppend(pParse, yymsp[-2].minor.yy138, p);
+  yymsp[-2].minor.yy242 = sqlite3ExprListAppend(pParse, yymsp[-2].minor.yy242, p);
 }
         break;
-      case 98: /* selcollist ::= sclp scanpt nm DOT STAR */
+      case 100: /* selcollist ::= sclp scanpt nm DOT STAR */
 {
   Expr *pRight = sqlite3PExpr(pParse, TK_ASTERISK, 0, 0);
   Expr *pLeft = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-2].minor.yy0, 1);
   Expr *pDot = sqlite3PExpr(pParse, TK_DOT, pLeft, pRight);
-  yymsp[-4].minor.yy138 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy138, pDot);
+  yymsp[-4].minor.yy242 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy242, pDot);
 }
         break;
-      case 99: /* as ::= AS nm */
-      case 110: /* dbnm ::= DOT nm */ yytestcase(yyruleno==110);
-      case 242: /* plus_num ::= PLUS INTEGER|FLOAT */ yytestcase(yyruleno==242);
-      case 243: /* minus_num ::= MINUS INTEGER|FLOAT */ yytestcase(yyruleno==243);
+      case 101: /* as ::= AS nm */
+      case 112: /* dbnm ::= DOT nm */ yytestcase(yyruleno==112);
+      case 244: /* plus_num ::= PLUS INTEGER|FLOAT */ yytestcase(yyruleno==244);
+      case 245: /* minus_num ::= MINUS INTEGER|FLOAT */ yytestcase(yyruleno==245);
 {yymsp[-1].minor.yy0 = yymsp[0].minor.yy0;}
         break;
-      case 101: /* from ::= */
-{yymsp[1].minor.yy609 = sqlite3DbMallocZero(pParse->db, sizeof(*yymsp[1].minor.yy609));}
+      case 103: /* from ::= */
+      case 106: /* stl_prefix ::= */ yytestcase(yyruleno==106);
+{yymsp[1].minor.yy47 = 0;}
         break;
-      case 102: /* from ::= FROM seltablist */
+      case 104: /* from ::= FROM seltablist */
 {
-  yymsp[-1].minor.yy609 = yymsp[0].minor.yy609;
-  sqlite3SrcListShiftJoinType(yymsp[-1].minor.yy609);
+  yymsp[-1].minor.yy47 = yymsp[0].minor.yy47;
+  sqlite3SrcListShiftJoinType(yymsp[-1].minor.yy47);
 }
         break;
-      case 103: /* stl_prefix ::= seltablist joinop */
+      case 105: /* stl_prefix ::= seltablist joinop */
 {
-   if( ALWAYS(yymsp[-1].minor.yy609 && yymsp[-1].minor.yy609->nSrc>0) ) yymsp[-1].minor.yy609->a[yymsp[-1].minor.yy609->nSrc-1].fg.jointype = (u8)yymsp[0].minor.yy32;
+   if( ALWAYS(yymsp[-1].minor.yy47 && yymsp[-1].minor.yy47->nSrc>0) ) yymsp[-1].minor.yy47->a[yymsp[-1].minor.yy47->nSrc-1].fg.jointype = (u8)yymsp[0].minor.yy192;
 }
         break;
-      case 104: /* stl_prefix ::= */
-{yymsp[1].minor.yy609 = 0;}
-        break;
-      case 105: /* seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt */
+      case 107: /* seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt */
 {
-  yymsp[-6].minor.yy609 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy609,&yymsp[-5].minor.yy0,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,0,yymsp[-1].minor.yy46,yymsp[0].minor.yy406);
-  sqlite3SrcListIndexedBy(pParse, yymsp[-6].minor.yy609, &yymsp[-2].minor.yy0);
+  yymsp[-6].minor.yy47 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy47,&yymsp[-5].minor.yy0,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,0,yymsp[-1].minor.yy202,yymsp[0].minor.yy600);
+  sqlite3SrcListIndexedBy(pParse, yymsp[-6].minor.yy47, &yymsp[-2].minor.yy0);
 }
         break;
-      case 106: /* seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt */
+      case 108: /* seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt */
 {
-  yymsp[-8].minor.yy609 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-8].minor.yy609,&yymsp[-7].minor.yy0,&yymsp[-6].minor.yy0,&yymsp[-2].minor.yy0,0,yymsp[-1].minor.yy46,yymsp[0].minor.yy406);
-  sqlite3SrcListFuncArgs(pParse, yymsp[-8].minor.yy609, yymsp[-4].minor.yy138);
+  yymsp[-8].minor.yy47 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-8].minor.yy47,&yymsp[-7].minor.yy0,&yymsp[-6].minor.yy0,&yymsp[-2].minor.yy0,0,yymsp[-1].minor.yy202,yymsp[0].minor.yy600);
+  sqlite3SrcListFuncArgs(pParse, yymsp[-8].minor.yy47, yymsp[-4].minor.yy242);
 }
         break;
-      case 107: /* seltablist ::= stl_prefix LP select RP as on_opt using_opt */
+      case 109: /* seltablist ::= stl_prefix LP select RP as on_opt using_opt */
 {
-    yymsp[-6].minor.yy609 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy609,0,0,&yymsp[-2].minor.yy0,yymsp[-4].minor.yy25,yymsp[-1].minor.yy46,yymsp[0].minor.yy406);
+    yymsp[-6].minor.yy47 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy47,0,0,&yymsp[-2].minor.yy0,yymsp[-4].minor.yy539,yymsp[-1].minor.yy202,yymsp[0].minor.yy600);
   }
         break;
-      case 108: /* seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt */
+      case 110: /* seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt */
 {
-    if( yymsp[-6].minor.yy609==0 && yymsp[-2].minor.yy0.n==0 && yymsp[-1].minor.yy46==0 && yymsp[0].minor.yy406==0 ){
-      yymsp[-6].minor.yy609 = yymsp[-4].minor.yy609;
-    }else if( yymsp[-4].minor.yy609->nSrc==1 ){
-      yymsp[-6].minor.yy609 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy609,0,0,&yymsp[-2].minor.yy0,0,yymsp[-1].minor.yy46,yymsp[0].minor.yy406);
-      if( yymsp[-6].minor.yy609 ){
-        struct SrcList_item *pNew = &yymsp[-6].minor.yy609->a[yymsp[-6].minor.yy609->nSrc-1];
-        struct SrcList_item *pOld = yymsp[-4].minor.yy609->a;
+    if( yymsp[-6].minor.yy47==0 && yymsp[-2].minor.yy0.n==0 && yymsp[-1].minor.yy202==0 && yymsp[0].minor.yy600==0 ){
+      yymsp[-6].minor.yy47 = yymsp[-4].minor.yy47;
+    }else if( yymsp[-4].minor.yy47->nSrc==1 ){
+      yymsp[-6].minor.yy47 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy47,0,0,&yymsp[-2].minor.yy0,0,yymsp[-1].minor.yy202,yymsp[0].minor.yy600);
+      if( yymsp[-6].minor.yy47 ){
+        struct SrcList_item *pNew = &yymsp[-6].minor.yy47->a[yymsp[-6].minor.yy47->nSrc-1];
+        struct SrcList_item *pOld = yymsp[-4].minor.yy47->a;
         pNew->zName = pOld->zName;
         pNew->zDatabase = pOld->zDatabase;
         pNew->pSelect = pOld->pSelect;
@@ -157910,208 +162889,209 @@ static YYACTIONTYPE yy_reduce(
         pOld->zName = pOld->zDatabase = 0;
         pOld->pSelect = 0;
       }
-      sqlite3SrcListDelete(pParse->db, yymsp[-4].minor.yy609);
+      sqlite3SrcListDelete(pParse->db, yymsp[-4].minor.yy47);
     }else{
       Select *pSubquery;
-      sqlite3SrcListShiftJoinType(yymsp[-4].minor.yy609);
-      pSubquery = sqlite3SelectNew(pParse,0,yymsp[-4].minor.yy609,0,0,0,0,SF_NestedFrom,0);
-      yymsp[-6].minor.yy609 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy609,0,0,&yymsp[-2].minor.yy0,pSubquery,yymsp[-1].minor.yy46,yymsp[0].minor.yy406);
+      sqlite3SrcListShiftJoinType(yymsp[-4].minor.yy47);
+      pSubquery = sqlite3SelectNew(pParse,0,yymsp[-4].minor.yy47,0,0,0,0,SF_NestedFrom,0);
+      yymsp[-6].minor.yy47 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy47,0,0,&yymsp[-2].minor.yy0,pSubquery,yymsp[-1].minor.yy202,yymsp[0].minor.yy600);
     }
   }
         break;
-      case 109: /* dbnm ::= */
-      case 123: /* indexed_opt ::= */ yytestcase(yyruleno==123);
+      case 111: /* dbnm ::= */
+      case 125: /* indexed_opt ::= */ yytestcase(yyruleno==125);
 {yymsp[1].minor.yy0.z=0; yymsp[1].minor.yy0.n=0;}
         break;
-      case 111: /* fullname ::= nm */
+      case 113: /* fullname ::= nm */
 {
-  yylhsminor.yy609 = sqlite3SrcListAppend(pParse,0,&yymsp[0].minor.yy0,0);
-  if( IN_RENAME_OBJECT && yylhsminor.yy609 ) sqlite3RenameTokenMap(pParse, yylhsminor.yy609->a[0].zName, &yymsp[0].minor.yy0);
+  yylhsminor.yy47 = sqlite3SrcListAppend(pParse,0,&yymsp[0].minor.yy0,0);
+  if( IN_RENAME_OBJECT && yylhsminor.yy47 ) sqlite3RenameTokenMap(pParse, yylhsminor.yy47->a[0].zName, &yymsp[0].minor.yy0);
 }
-  yymsp[0].minor.yy609 = yylhsminor.yy609;
+  yymsp[0].minor.yy47 = yylhsminor.yy47;
         break;
-      case 112: /* fullname ::= nm DOT nm */
+      case 114: /* fullname ::= nm DOT nm */
 {
-  yylhsminor.yy609 = sqlite3SrcListAppend(pParse,0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0);
-  if( IN_RENAME_OBJECT && yylhsminor.yy609 ) sqlite3RenameTokenMap(pParse, yylhsminor.yy609->a[0].zName, &yymsp[0].minor.yy0);
+  yylhsminor.yy47 = sqlite3SrcListAppend(pParse,0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0);
+  if( IN_RENAME_OBJECT && yylhsminor.yy47 ) sqlite3RenameTokenMap(pParse, yylhsminor.yy47->a[0].zName, &yymsp[0].minor.yy0);
 }
-  yymsp[-2].minor.yy609 = yylhsminor.yy609;
+  yymsp[-2].minor.yy47 = yylhsminor.yy47;
         break;
-      case 113: /* xfullname ::= nm */
-{yymsp[0].minor.yy609 = sqlite3SrcListAppend(pParse,0,&yymsp[0].minor.yy0,0); /*A-overwrites-X*/}
+      case 115: /* xfullname ::= nm */
+{yymsp[0].minor.yy47 = sqlite3SrcListAppend(pParse,0,&yymsp[0].minor.yy0,0); /*A-overwrites-X*/}
         break;
-      case 114: /* xfullname ::= nm DOT nm */
-{yymsp[-2].minor.yy609 = sqlite3SrcListAppend(pParse,0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-X*/}
+      case 116: /* xfullname ::= nm DOT nm */
+{yymsp[-2].minor.yy47 = sqlite3SrcListAppend(pParse,0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0); /*A-overwrites-X*/}
         break;
-      case 115: /* xfullname ::= nm DOT nm AS nm */
+      case 117: /* xfullname ::= nm DOT nm AS nm */
 {
-   yymsp[-4].minor.yy609 = sqlite3SrcListAppend(pParse,0,&yymsp[-4].minor.yy0,&yymsp[-2].minor.yy0); /*A-overwrites-X*/
-   if( yymsp[-4].minor.yy609 ) yymsp[-4].minor.yy609->a[0].zAlias = sqlite3NameFromToken(pParse->db, &yymsp[0].minor.yy0);
+   yymsp[-4].minor.yy47 = sqlite3SrcListAppend(pParse,0,&yymsp[-4].minor.yy0,&yymsp[-2].minor.yy0); /*A-overwrites-X*/
+   if( yymsp[-4].minor.yy47 ) yymsp[-4].minor.yy47->a[0].zAlias = sqlite3NameFromToken(pParse->db, &yymsp[0].minor.yy0);
 }
         break;
-      case 116: /* xfullname ::= nm AS nm */
+      case 118: /* xfullname ::= nm AS nm */
 {
-   yymsp[-2].minor.yy609 = sqlite3SrcListAppend(pParse,0,&yymsp[-2].minor.yy0,0); /*A-overwrites-X*/
-   if( yymsp[-2].minor.yy609 ) yymsp[-2].minor.yy609->a[0].zAlias = sqlite3NameFromToken(pParse->db, &yymsp[0].minor.yy0);
+   yymsp[-2].minor.yy47 = sqlite3SrcListAppend(pParse,0,&yymsp[-2].minor.yy0,0); /*A-overwrites-X*/
+   if( yymsp[-2].minor.yy47 ) yymsp[-2].minor.yy47->a[0].zAlias = sqlite3NameFromToken(pParse->db, &yymsp[0].minor.yy0);
 }
         break;
-      case 117: /* joinop ::= COMMA|JOIN */
-{ yymsp[0].minor.yy32 = JT_INNER; }
+      case 119: /* joinop ::= COMMA|JOIN */
+{ yymsp[0].minor.yy192 = JT_INNER; }
         break;
-      case 118: /* joinop ::= JOIN_KW JOIN */
-{yymsp[-1].minor.yy32 = sqlite3JoinType(pParse,&yymsp[-1].minor.yy0,0,0);  /*X-overwrites-A*/}
+      case 120: /* joinop ::= JOIN_KW JOIN */
+{yymsp[-1].minor.yy192 = sqlite3JoinType(pParse,&yymsp[-1].minor.yy0,0,0);  /*X-overwrites-A*/}
         break;
-      case 119: /* joinop ::= JOIN_KW nm JOIN */
-{yymsp[-2].minor.yy32 = sqlite3JoinType(pParse,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0,0); /*X-overwrites-A*/}
+      case 121: /* joinop ::= JOIN_KW nm JOIN */
+{yymsp[-2].minor.yy192 = sqlite3JoinType(pParse,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0,0); /*X-overwrites-A*/}
         break;
-      case 120: /* joinop ::= JOIN_KW nm nm JOIN */
-{yymsp[-3].minor.yy32 = sqlite3JoinType(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0);/*X-overwrites-A*/}
+      case 122: /* joinop ::= JOIN_KW nm nm JOIN */
+{yymsp[-3].minor.yy192 = sqlite3JoinType(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0);/*X-overwrites-A*/}
         break;
-      case 121: /* on_opt ::= ON expr */
-      case 141: /* having_opt ::= HAVING expr */ yytestcase(yyruleno==141);
-      case 148: /* where_opt ::= WHERE expr */ yytestcase(yyruleno==148);
-      case 214: /* case_else ::= ELSE expr */ yytestcase(yyruleno==214);
-      case 235: /* vinto ::= INTO expr */ yytestcase(yyruleno==235);
-{yymsp[-1].minor.yy46 = yymsp[0].minor.yy46;}
+      case 123: /* on_opt ::= ON expr */
+      case 143: /* having_opt ::= HAVING expr */ yytestcase(yyruleno==143);
+      case 150: /* where_opt ::= WHERE expr */ yytestcase(yyruleno==150);
+      case 216: /* case_else ::= ELSE expr */ yytestcase(yyruleno==216);
+      case 237: /* vinto ::= INTO expr */ yytestcase(yyruleno==237);
+{yymsp[-1].minor.yy202 = yymsp[0].minor.yy202;}
         break;
-      case 122: /* on_opt ::= */
-      case 140: /* having_opt ::= */ yytestcase(yyruleno==140);
-      case 142: /* limit_opt ::= */ yytestcase(yyruleno==142);
-      case 147: /* where_opt ::= */ yytestcase(yyruleno==147);
-      case 215: /* case_else ::= */ yytestcase(yyruleno==215);
-      case 217: /* case_operand ::= */ yytestcase(yyruleno==217);
-      case 236: /* vinto ::= */ yytestcase(yyruleno==236);
-{yymsp[1].minor.yy46 = 0;}
+      case 124: /* on_opt ::= */
+      case 142: /* having_opt ::= */ yytestcase(yyruleno==142);
+      case 144: /* limit_opt ::= */ yytestcase(yyruleno==144);
+      case 149: /* where_opt ::= */ yytestcase(yyruleno==149);
+      case 217: /* case_else ::= */ yytestcase(yyruleno==217);
+      case 219: /* case_operand ::= */ yytestcase(yyruleno==219);
+      case 238: /* vinto ::= */ yytestcase(yyruleno==238);
+{yymsp[1].minor.yy202 = 0;}
         break;
-      case 124: /* indexed_opt ::= INDEXED BY nm */
+      case 126: /* indexed_opt ::= INDEXED BY nm */
 {yymsp[-2].minor.yy0 = yymsp[0].minor.yy0;}
         break;
-      case 125: /* indexed_opt ::= NOT INDEXED */
+      case 127: /* indexed_opt ::= NOT INDEXED */
 {yymsp[-1].minor.yy0.z=0; yymsp[-1].minor.yy0.n=1;}
         break;
-      case 126: /* using_opt ::= USING LP idlist RP */
-{yymsp[-3].minor.yy406 = yymsp[-1].minor.yy406;}
+      case 128: /* using_opt ::= USING LP idlist RP */
+{yymsp[-3].minor.yy600 = yymsp[-1].minor.yy600;}
         break;
-      case 127: /* using_opt ::= */
-      case 162: /* idlist_opt ::= */ yytestcase(yyruleno==162);
-{yymsp[1].minor.yy406 = 0;}
+      case 129: /* using_opt ::= */
+      case 164: /* idlist_opt ::= */ yytestcase(yyruleno==164);
+{yymsp[1].minor.yy600 = 0;}
         break;
-      case 129: /* orderby_opt ::= ORDER BY sortlist */
-      case 139: /* groupby_opt ::= GROUP BY nexprlist */ yytestcase(yyruleno==139);
-{yymsp[-2].minor.yy138 = yymsp[0].minor.yy138;}
+      case 131: /* orderby_opt ::= ORDER BY sortlist */
+      case 141: /* groupby_opt ::= GROUP BY nexprlist */ yytestcase(yyruleno==141);
+{yymsp[-2].minor.yy242 = yymsp[0].minor.yy242;}
         break;
-      case 130: /* sortlist ::= sortlist COMMA expr sortorder nulls */
+      case 132: /* sortlist ::= sortlist COMMA expr sortorder nulls */
 {
-  yymsp[-4].minor.yy138 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy138,yymsp[-2].minor.yy46);
-  sqlite3ExprListSetSortOrder(yymsp[-4].minor.yy138,yymsp[-1].minor.yy32,yymsp[0].minor.yy32);
+  yymsp[-4].minor.yy242 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy242,yymsp[-2].minor.yy202);
+  sqlite3ExprListSetSortOrder(yymsp[-4].minor.yy242,yymsp[-1].minor.yy192,yymsp[0].minor.yy192);
 }
         break;
-      case 131: /* sortlist ::= expr sortorder nulls */
+      case 133: /* sortlist ::= expr sortorder nulls */
 {
-  yymsp[-2].minor.yy138 = sqlite3ExprListAppend(pParse,0,yymsp[-2].minor.yy46); /*A-overwrites-Y*/
-  sqlite3ExprListSetSortOrder(yymsp[-2].minor.yy138,yymsp[-1].minor.yy32,yymsp[0].minor.yy32);
+  yymsp[-2].minor.yy242 = sqlite3ExprListAppend(pParse,0,yymsp[-2].minor.yy202); /*A-overwrites-Y*/
+  sqlite3ExprListSetSortOrder(yymsp[-2].minor.yy242,yymsp[-1].minor.yy192,yymsp[0].minor.yy192);
 }
         break;
-      case 132: /* sortorder ::= ASC */
-{yymsp[0].minor.yy32 = SQLITE_SO_ASC;}
+      case 134: /* sortorder ::= ASC */
+{yymsp[0].minor.yy192 = SQLITE_SO_ASC;}
         break;
-      case 133: /* sortorder ::= DESC */
-{yymsp[0].minor.yy32 = SQLITE_SO_DESC;}
+      case 135: /* sortorder ::= DESC */
+{yymsp[0].minor.yy192 = SQLITE_SO_DESC;}
         break;
-      case 134: /* sortorder ::= */
-      case 137: /* nulls ::= */ yytestcase(yyruleno==137);
-{yymsp[1].minor.yy32 = SQLITE_SO_UNDEFINED;}
+      case 136: /* sortorder ::= */
+      case 139: /* nulls ::= */ yytestcase(yyruleno==139);
+{yymsp[1].minor.yy192 = SQLITE_SO_UNDEFINED;}
         break;
-      case 135: /* nulls ::= NULLS FIRST */
-{yymsp[-1].minor.yy32 = SQLITE_SO_ASC;}
+      case 137: /* nulls ::= NULLS FIRST */
+{yymsp[-1].minor.yy192 = SQLITE_SO_ASC;}
         break;
-      case 136: /* nulls ::= NULLS LAST */
-{yymsp[-1].minor.yy32 = SQLITE_SO_DESC;}
+      case 138: /* nulls ::= NULLS LAST */
+{yymsp[-1].minor.yy192 = SQLITE_SO_DESC;}
         break;
-      case 143: /* limit_opt ::= LIMIT expr */
-{yymsp[-1].minor.yy46 = sqlite3PExpr(pParse,TK_LIMIT,yymsp[0].minor.yy46,0);}
+      case 145: /* limit_opt ::= LIMIT expr */
+{yymsp[-1].minor.yy202 = sqlite3PExpr(pParse,TK_LIMIT,yymsp[0].minor.yy202,0);}
         break;
-      case 144: /* limit_opt ::= LIMIT expr OFFSET expr */
-{yymsp[-3].minor.yy46 = sqlite3PExpr(pParse,TK_LIMIT,yymsp[-2].minor.yy46,yymsp[0].minor.yy46);}
+      case 146: /* limit_opt ::= LIMIT expr OFFSET expr */
+{yymsp[-3].minor.yy202 = sqlite3PExpr(pParse,TK_LIMIT,yymsp[-2].minor.yy202,yymsp[0].minor.yy202);}
         break;
-      case 145: /* limit_opt ::= LIMIT expr COMMA expr */
-{yymsp[-3].minor.yy46 = sqlite3PExpr(pParse,TK_LIMIT,yymsp[0].minor.yy46,yymsp[-2].minor.yy46);}
+      case 147: /* limit_opt ::= LIMIT expr COMMA expr */
+{yymsp[-3].minor.yy202 = sqlite3PExpr(pParse,TK_LIMIT,yymsp[0].minor.yy202,yymsp[-2].minor.yy202);}
         break;
-      case 146: /* cmd ::= with DELETE FROM xfullname indexed_opt where_opt */
+      case 148: /* cmd ::= with DELETE FROM xfullname indexed_opt where_opt */
 {
-  sqlite3SrcListIndexedBy(pParse, yymsp[-2].minor.yy609, &yymsp[-1].minor.yy0);
-  sqlite3DeleteFrom(pParse,yymsp[-2].minor.yy609,yymsp[0].minor.yy46,0,0);
+  sqlite3SrcListIndexedBy(pParse, yymsp[-2].minor.yy47, &yymsp[-1].minor.yy0);
+  sqlite3DeleteFrom(pParse,yymsp[-2].minor.yy47,yymsp[0].minor.yy202,0,0);
 }
         break;
-      case 149: /* cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist where_opt */
+      case 151: /* cmd ::= with UPDATE orconf xfullname indexed_opt SET setlist from where_opt */
 {
-  sqlite3SrcListIndexedBy(pParse, yymsp[-4].minor.yy609, &yymsp[-3].minor.yy0);
-  sqlite3ExprListCheckLength(pParse,yymsp[-1].minor.yy138,"set list");
-  sqlite3Update(pParse,yymsp[-4].minor.yy609,yymsp[-1].minor.yy138,yymsp[0].minor.yy46,yymsp[-5].minor.yy32,0,0,0);
+  sqlite3SrcListIndexedBy(pParse, yymsp[-5].minor.yy47, &yymsp[-4].minor.yy0);
+  sqlite3ExprListCheckLength(pParse,yymsp[-2].minor.yy242,"set list");
+  yymsp[-5].minor.yy47 = sqlite3SrcListAppendList(pParse, yymsp[-5].minor.yy47, yymsp[-1].minor.yy47);
+  sqlite3Update(pParse,yymsp[-5].minor.yy47,yymsp[-2].minor.yy242,yymsp[0].minor.yy202,yymsp[-6].minor.yy192,0,0,0);
 }
         break;
-      case 150: /* setlist ::= setlist COMMA nm EQ expr */
+      case 152: /* setlist ::= setlist COMMA nm EQ expr */
 {
-  yymsp[-4].minor.yy138 = sqlite3ExprListAppend(pParse, yymsp[-4].minor.yy138, yymsp[0].minor.yy46);
-  sqlite3ExprListSetName(pParse, yymsp[-4].minor.yy138, &yymsp[-2].minor.yy0, 1);
+  yymsp[-4].minor.yy242 = sqlite3ExprListAppend(pParse, yymsp[-4].minor.yy242, yymsp[0].minor.yy202);
+  sqlite3ExprListSetName(pParse, yymsp[-4].minor.yy242, &yymsp[-2].minor.yy0, 1);
 }
         break;
-      case 151: /* setlist ::= setlist COMMA LP idlist RP EQ expr */
+      case 153: /* setlist ::= setlist COMMA LP idlist RP EQ expr */
 {
-  yymsp[-6].minor.yy138 = sqlite3ExprListAppendVector(pParse, yymsp[-6].minor.yy138, yymsp[-3].minor.yy406, yymsp[0].minor.yy46);
+  yymsp[-6].minor.yy242 = sqlite3ExprListAppendVector(pParse, yymsp[-6].minor.yy242, yymsp[-3].minor.yy600, yymsp[0].minor.yy202);
 }
         break;
-      case 152: /* setlist ::= nm EQ expr */
+      case 154: /* setlist ::= nm EQ expr */
 {
-  yylhsminor.yy138 = sqlite3ExprListAppend(pParse, 0, yymsp[0].minor.yy46);
-  sqlite3ExprListSetName(pParse, yylhsminor.yy138, &yymsp[-2].minor.yy0, 1);
+  yylhsminor.yy242 = sqlite3ExprListAppend(pParse, 0, yymsp[0].minor.yy202);
+  sqlite3ExprListSetName(pParse, yylhsminor.yy242, &yymsp[-2].minor.yy0, 1);
 }
-  yymsp[-2].minor.yy138 = yylhsminor.yy138;
+  yymsp[-2].minor.yy242 = yylhsminor.yy242;
         break;
-      case 153: /* setlist ::= LP idlist RP EQ expr */
+      case 155: /* setlist ::= LP idlist RP EQ expr */
 {
-  yymsp[-4].minor.yy138 = sqlite3ExprListAppendVector(pParse, 0, yymsp[-3].minor.yy406, yymsp[0].minor.yy46);
+  yymsp[-4].minor.yy242 = sqlite3ExprListAppendVector(pParse, 0, yymsp[-3].minor.yy600, yymsp[0].minor.yy202);
 }
         break;
-      case 154: /* cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert */
+      case 156: /* cmd ::= with insert_cmd INTO xfullname idlist_opt select upsert */
 {
-  sqlite3Insert(pParse, yymsp[-3].minor.yy609, yymsp[-1].minor.yy25, yymsp[-2].minor.yy406, yymsp[-5].minor.yy32, yymsp[0].minor.yy288);
+  sqlite3Insert(pParse, yymsp[-3].minor.yy47, yymsp[-1].minor.yy539, yymsp[-2].minor.yy600, yymsp[-5].minor.yy192, yymsp[0].minor.yy318);
 }
         break;
-      case 155: /* cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES */
+      case 157: /* cmd ::= with insert_cmd INTO xfullname idlist_opt DEFAULT VALUES */
 {
-  sqlite3Insert(pParse, yymsp[-3].minor.yy609, 0, yymsp[-2].minor.yy406, yymsp[-5].minor.yy32, 0);
+  sqlite3Insert(pParse, yymsp[-3].minor.yy47, 0, yymsp[-2].minor.yy600, yymsp[-5].minor.yy192, 0);
 }
         break;
-      case 156: /* upsert ::= */
-{ yymsp[1].minor.yy288 = 0; }
+      case 158: /* upsert ::= */
+{ yymsp[1].minor.yy318 = 0; }
         break;
-      case 157: /* upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt */
-{ yymsp[-10].minor.yy288 = sqlite3UpsertNew(pParse->db,yymsp[-7].minor.yy138,yymsp[-5].minor.yy46,yymsp[-1].minor.yy138,yymsp[0].minor.yy46);}
+      case 159: /* upsert ::= ON CONFLICT LP sortlist RP where_opt DO UPDATE SET setlist where_opt */
+{ yymsp[-10].minor.yy318 = sqlite3UpsertNew(pParse->db,yymsp[-7].minor.yy242,yymsp[-5].minor.yy202,yymsp[-1].minor.yy242,yymsp[0].minor.yy202);}
         break;
-      case 158: /* upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING */
-{ yymsp[-7].minor.yy288 = sqlite3UpsertNew(pParse->db,yymsp[-4].minor.yy138,yymsp[-2].minor.yy46,0,0); }
+      case 160: /* upsert ::= ON CONFLICT LP sortlist RP where_opt DO NOTHING */
+{ yymsp[-7].minor.yy318 = sqlite3UpsertNew(pParse->db,yymsp[-4].minor.yy242,yymsp[-2].minor.yy202,0,0); }
         break;
-      case 159: /* upsert ::= ON CONFLICT DO NOTHING */
-{ yymsp[-3].minor.yy288 = sqlite3UpsertNew(pParse->db,0,0,0,0); }
+      case 161: /* upsert ::= ON CONFLICT DO NOTHING */
+{ yymsp[-3].minor.yy318 = sqlite3UpsertNew(pParse->db,0,0,0,0); }
         break;
-      case 163: /* idlist_opt ::= LP idlist RP */
-{yymsp[-2].minor.yy406 = yymsp[-1].minor.yy406;}
+      case 165: /* idlist_opt ::= LP idlist RP */
+{yymsp[-2].minor.yy600 = yymsp[-1].minor.yy600;}
         break;
-      case 164: /* idlist ::= idlist COMMA nm */
-{yymsp[-2].minor.yy406 = sqlite3IdListAppend(pParse,yymsp[-2].minor.yy406,&yymsp[0].minor.yy0);}
+      case 166: /* idlist ::= idlist COMMA nm */
+{yymsp[-2].minor.yy600 = sqlite3IdListAppend(pParse,yymsp[-2].minor.yy600,&yymsp[0].minor.yy0);}
         break;
-      case 165: /* idlist ::= nm */
-{yymsp[0].minor.yy406 = sqlite3IdListAppend(pParse,0,&yymsp[0].minor.yy0); /*A-overwrites-Y*/}
+      case 167: /* idlist ::= nm */
+{yymsp[0].minor.yy600 = sqlite3IdListAppend(pParse,0,&yymsp[0].minor.yy0); /*A-overwrites-Y*/}
         break;
-      case 166: /* expr ::= LP expr RP */
-{yymsp[-2].minor.yy46 = yymsp[-1].minor.yy46;}
+      case 168: /* expr ::= LP expr RP */
+{yymsp[-2].minor.yy202 = yymsp[-1].minor.yy202;}
         break;
-      case 167: /* expr ::= ID|INDEXED */
-      case 168: /* expr ::= JOIN_KW */ yytestcase(yyruleno==168);
-{yymsp[0].minor.yy46=tokenExpr(pParse,TK_ID,yymsp[0].minor.yy0); /*A-overwrites-X*/}
+      case 169: /* expr ::= ID|INDEXED */
+      case 170: /* expr ::= JOIN_KW */ yytestcase(yyruleno==170);
+{yymsp[0].minor.yy202=tokenExpr(pParse,TK_ID,yymsp[0].minor.yy0); /*A-overwrites-X*/}
         break;
-      case 169: /* expr ::= nm DOT nm */
+      case 171: /* expr ::= nm DOT nm */
 {
   Expr *temp1 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-2].minor.yy0, 1);
   Expr *temp2 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[0].minor.yy0, 1);
@@ -158119,11 +163099,11 @@ static YYACTIONTYPE yy_reduce(
     sqlite3RenameTokenMap(pParse, (void*)temp2, &yymsp[0].minor.yy0);
     sqlite3RenameTokenMap(pParse, (void*)temp1, &yymsp[-2].minor.yy0);
   }
-  yylhsminor.yy46 = sqlite3PExpr(pParse, TK_DOT, temp1, temp2);
+  yylhsminor.yy202 = sqlite3PExpr(pParse, TK_DOT, temp1, temp2);
 }
-  yymsp[-2].minor.yy46 = yylhsminor.yy46;
+  yymsp[-2].minor.yy202 = yylhsminor.yy202;
         break;
-      case 170: /* expr ::= nm DOT nm DOT nm */
+      case 172: /* expr ::= nm DOT nm DOT nm */
 {
   Expr *temp1 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-4].minor.yy0, 1);
   Expr *temp2 = sqlite3ExprAlloc(pParse->db, TK_ID, &yymsp[-2].minor.yy0, 1);
@@ -158133,26 +163113,26 @@ static YYACTIONTYPE yy_reduce(
     sqlite3RenameTokenMap(pParse, (void*)temp3, &yymsp[0].minor.yy0);
     sqlite3RenameTokenMap(pParse, (void*)temp2, &yymsp[-2].minor.yy0);
   }
-  yylhsminor.yy46 = sqlite3PExpr(pParse, TK_DOT, temp1, temp4);
+  yylhsminor.yy202 = sqlite3PExpr(pParse, TK_DOT, temp1, temp4);
 }
-  yymsp[-4].minor.yy46 = yylhsminor.yy46;
+  yymsp[-4].minor.yy202 = yylhsminor.yy202;
         break;
-      case 171: /* term ::= NULL|FLOAT|BLOB */
-      case 172: /* term ::= STRING */ yytestcase(yyruleno==172);
-{yymsp[0].minor.yy46=tokenExpr(pParse,yymsp[0].major,yymsp[0].minor.yy0); /*A-overwrites-X*/}
+      case 173: /* term ::= NULL|FLOAT|BLOB */
+      case 174: /* term ::= STRING */ yytestcase(yyruleno==174);
+{yymsp[0].minor.yy202=tokenExpr(pParse,yymsp[0].major,yymsp[0].minor.yy0); /*A-overwrites-X*/}
         break;
-      case 173: /* term ::= INTEGER */
+      case 175: /* term ::= INTEGER */
 {
-  yylhsminor.yy46 = sqlite3ExprAlloc(pParse->db, TK_INTEGER, &yymsp[0].minor.yy0, 1);
+  yylhsminor.yy202 = sqlite3ExprAlloc(pParse->db, TK_INTEGER, &yymsp[0].minor.yy0, 1);
 }
-  yymsp[0].minor.yy46 = yylhsminor.yy46;
+  yymsp[0].minor.yy202 = yylhsminor.yy202;
         break;
-      case 174: /* expr ::= VARIABLE */
+      case 176: /* expr ::= VARIABLE */
 {
   if( !(yymsp[0].minor.yy0.z[0]=='#' && sqlite3Isdigit(yymsp[0].minor.yy0.z[1])) ){
     u32 n = yymsp[0].minor.yy0.n;
-    yymsp[0].minor.yy46 = tokenExpr(pParse, TK_VARIABLE, yymsp[0].minor.yy0);
-    sqlite3ExprAssignVarNumber(pParse, yymsp[0].minor.yy46, n);
+    yymsp[0].minor.yy202 = tokenExpr(pParse, TK_VARIABLE, yymsp[0].minor.yy0);
+    sqlite3ExprAssignVarNumber(pParse, yymsp[0].minor.yy202, n);
   }else{
     /* When doing a nested parse, one can include terms in an expression
     ** that look like this:   #1 #2 ...  These terms refer to registers
@@ -158161,156 +163141,159 @@ static YYACTIONTYPE yy_reduce(
     assert( t.n>=2 );
     if( pParse->nested==0 ){
       sqlite3ErrorMsg(pParse, "near \"%T\": syntax error", &t);
-      yymsp[0].minor.yy46 = 0;
+      yymsp[0].minor.yy202 = 0;
     }else{
-      yymsp[0].minor.yy46 = sqlite3PExpr(pParse, TK_REGISTER, 0, 0);
-      if( yymsp[0].minor.yy46 ) sqlite3GetInt32(&t.z[1], &yymsp[0].minor.yy46->iTable);
+      yymsp[0].minor.yy202 = sqlite3PExpr(pParse, TK_REGISTER, 0, 0);
+      if( yymsp[0].minor.yy202 ) sqlite3GetInt32(&t.z[1], &yymsp[0].minor.yy202->iTable);
     }
   }
 }
         break;
-      case 175: /* expr ::= expr COLLATE ID|STRING */
+      case 177: /* expr ::= expr COLLATE ID|STRING */
 {
-  yymsp[-2].minor.yy46 = sqlite3ExprAddCollateToken(pParse, yymsp[-2].minor.yy46, &yymsp[0].minor.yy0, 1);
+  yymsp[-2].minor.yy202 = sqlite3ExprAddCollateToken(pParse, yymsp[-2].minor.yy202, &yymsp[0].minor.yy0, 1);
 }
         break;
-      case 176: /* expr ::= CAST LP expr AS typetoken RP */
+      case 178: /* expr ::= CAST LP expr AS typetoken RP */
 {
-  yymsp[-5].minor.yy46 = sqlite3ExprAlloc(pParse->db, TK_CAST, &yymsp[-1].minor.yy0, 1);
-  sqlite3ExprAttachSubtrees(pParse->db, yymsp[-5].minor.yy46, yymsp[-3].minor.yy46, 0);
+  yymsp[-5].minor.yy202 = sqlite3ExprAlloc(pParse->db, TK_CAST, &yymsp[-1].minor.yy0, 1);
+  sqlite3ExprAttachSubtrees(pParse->db, yymsp[-5].minor.yy202, yymsp[-3].minor.yy202, 0);
 }
         break;
-      case 177: /* expr ::= ID|INDEXED LP distinct exprlist RP */
+      case 179: /* expr ::= ID|INDEXED LP distinct exprlist RP */
 {
-  yylhsminor.yy46 = sqlite3ExprFunction(pParse, yymsp[-1].minor.yy138, &yymsp[-4].minor.yy0, yymsp[-2].minor.yy32);
+  yylhsminor.yy202 = sqlite3ExprFunction(pParse, yymsp[-1].minor.yy242, &yymsp[-4].minor.yy0, yymsp[-2].minor.yy192);
 }
-  yymsp[-4].minor.yy46 = yylhsminor.yy46;
+  yymsp[-4].minor.yy202 = yylhsminor.yy202;
         break;
-      case 178: /* expr ::= ID|INDEXED LP STAR RP */
+      case 180: /* expr ::= ID|INDEXED LP STAR RP */
 {
-  yylhsminor.yy46 = sqlite3ExprFunction(pParse, 0, &yymsp[-3].minor.yy0, 0);
+  yylhsminor.yy202 = sqlite3ExprFunction(pParse, 0, &yymsp[-3].minor.yy0, 0);
 }
-  yymsp[-3].minor.yy46 = yylhsminor.yy46;
+  yymsp[-3].minor.yy202 = yylhsminor.yy202;
         break;
-      case 179: /* expr ::= ID|INDEXED LP distinct exprlist RP filter_over */
+      case 181: /* expr ::= ID|INDEXED LP distinct exprlist RP filter_over */
 {
-  yylhsminor.yy46 = sqlite3ExprFunction(pParse, yymsp[-2].minor.yy138, &yymsp[-5].minor.yy0, yymsp[-3].minor.yy32);
-  sqlite3WindowAttach(pParse, yylhsminor.yy46, yymsp[0].minor.yy455);
+  yylhsminor.yy202 = sqlite3ExprFunction(pParse, yymsp[-2].minor.yy242, &yymsp[-5].minor.yy0, yymsp[-3].minor.yy192);
+  sqlite3WindowAttach(pParse, yylhsminor.yy202, yymsp[0].minor.yy303);
 }
-  yymsp[-5].minor.yy46 = yylhsminor.yy46;
+  yymsp[-5].minor.yy202 = yylhsminor.yy202;
         break;
-      case 180: /* expr ::= ID|INDEXED LP STAR RP filter_over */
+      case 182: /* expr ::= ID|INDEXED LP STAR RP filter_over */
 {
-  yylhsminor.yy46 = sqlite3ExprFunction(pParse, 0, &yymsp[-4].minor.yy0, 0);
-  sqlite3WindowAttach(pParse, yylhsminor.yy46, yymsp[0].minor.yy455);
+  yylhsminor.yy202 = sqlite3ExprFunction(pParse, 0, &yymsp[-4].minor.yy0, 0);
+  sqlite3WindowAttach(pParse, yylhsminor.yy202, yymsp[0].minor.yy303);
 }
-  yymsp[-4].minor.yy46 = yylhsminor.yy46;
+  yymsp[-4].minor.yy202 = yylhsminor.yy202;
         break;
-      case 181: /* term ::= CTIME_KW */
+      case 183: /* term ::= CTIME_KW */
 {
-  yylhsminor.yy46 = sqlite3ExprFunction(pParse, 0, &yymsp[0].minor.yy0, 0);
+  yylhsminor.yy202 = sqlite3ExprFunction(pParse, 0, &yymsp[0].minor.yy0, 0);
 }
-  yymsp[0].minor.yy46 = yylhsminor.yy46;
+  yymsp[0].minor.yy202 = yylhsminor.yy202;
         break;
-      case 182: /* expr ::= LP nexprlist COMMA expr RP */
+      case 184: /* expr ::= LP nexprlist COMMA expr RP */
 {
-  ExprList *pList = sqlite3ExprListAppend(pParse, yymsp[-3].minor.yy138, yymsp[-1].minor.yy46);
-  yymsp[-4].minor.yy46 = sqlite3PExpr(pParse, TK_VECTOR, 0, 0);
-  if( yymsp[-4].minor.yy46 ){
-    yymsp[-4].minor.yy46->x.pList = pList;
+  ExprList *pList = sqlite3ExprListAppend(pParse, yymsp[-3].minor.yy242, yymsp[-1].minor.yy202);
+  yymsp[-4].minor.yy202 = sqlite3PExpr(pParse, TK_VECTOR, 0, 0);
+  if( yymsp[-4].minor.yy202 ){
+    yymsp[-4].minor.yy202->x.pList = pList;
+    if( ALWAYS(pList->nExpr) ){
+      yymsp[-4].minor.yy202->flags |= pList->a[0].pExpr->flags & EP_Propagate;
+    }
   }else{
     sqlite3ExprListDelete(pParse->db, pList);
   }
 }
         break;
-      case 183: /* expr ::= expr AND expr */
-{yymsp[-2].minor.yy46=sqlite3ExprAnd(pParse,yymsp[-2].minor.yy46,yymsp[0].minor.yy46);}
+      case 185: /* expr ::= expr AND expr */
+{yymsp[-2].minor.yy202=sqlite3ExprAnd(pParse,yymsp[-2].minor.yy202,yymsp[0].minor.yy202);}
         break;
-      case 184: /* expr ::= expr OR expr */
-      case 185: /* expr ::= expr LT|GT|GE|LE expr */ yytestcase(yyruleno==185);
-      case 186: /* expr ::= expr EQ|NE expr */ yytestcase(yyruleno==186);
-      case 187: /* expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */ yytestcase(yyruleno==187);
-      case 188: /* expr ::= expr PLUS|MINUS expr */ yytestcase(yyruleno==188);
-      case 189: /* expr ::= expr STAR|SLASH|REM expr */ yytestcase(yyruleno==189);
-      case 190: /* expr ::= expr CONCAT expr */ yytestcase(yyruleno==190);
-{yymsp[-2].minor.yy46=sqlite3PExpr(pParse,yymsp[-1].major,yymsp[-2].minor.yy46,yymsp[0].minor.yy46);}
+      case 186: /* expr ::= expr OR expr */
+      case 187: /* expr ::= expr LT|GT|GE|LE expr */ yytestcase(yyruleno==187);
+      case 188: /* expr ::= expr EQ|NE expr */ yytestcase(yyruleno==188);
+      case 189: /* expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */ yytestcase(yyruleno==189);
+      case 190: /* expr ::= expr PLUS|MINUS expr */ yytestcase(yyruleno==190);
+      case 191: /* expr ::= expr STAR|SLASH|REM expr */ yytestcase(yyruleno==191);
+      case 192: /* expr ::= expr CONCAT expr */ yytestcase(yyruleno==192);
+{yymsp[-2].minor.yy202=sqlite3PExpr(pParse,yymsp[-1].major,yymsp[-2].minor.yy202,yymsp[0].minor.yy202);}
         break;
-      case 191: /* likeop ::= NOT LIKE_KW|MATCH */
+      case 193: /* likeop ::= NOT LIKE_KW|MATCH */
 {yymsp[-1].minor.yy0=yymsp[0].minor.yy0; yymsp[-1].minor.yy0.n|=0x80000000; /*yymsp[-1].minor.yy0-overwrite-yymsp[0].minor.yy0*/}
         break;
-      case 192: /* expr ::= expr likeop expr */
+      case 194: /* expr ::= expr likeop expr */
 {
   ExprList *pList;
   int bNot = yymsp[-1].minor.yy0.n & 0x80000000;
   yymsp[-1].minor.yy0.n &= 0x7fffffff;
-  pList = sqlite3ExprListAppend(pParse,0, yymsp[0].minor.yy46);
-  pList = sqlite3ExprListAppend(pParse,pList, yymsp[-2].minor.yy46);
-  yymsp[-2].minor.yy46 = sqlite3ExprFunction(pParse, pList, &yymsp[-1].minor.yy0, 0);
-  if( bNot ) yymsp[-2].minor.yy46 = sqlite3PExpr(pParse, TK_NOT, yymsp[-2].minor.yy46, 0);
-  if( yymsp[-2].minor.yy46 ) yymsp[-2].minor.yy46->flags |= EP_InfixFunc;
+  pList = sqlite3ExprListAppend(pParse,0, yymsp[0].minor.yy202);
+  pList = sqlite3ExprListAppend(pParse,pList, yymsp[-2].minor.yy202);
+  yymsp[-2].minor.yy202 = sqlite3ExprFunction(pParse, pList, &yymsp[-1].minor.yy0, 0);
+  if( bNot ) yymsp[-2].minor.yy202 = sqlite3PExpr(pParse, TK_NOT, yymsp[-2].minor.yy202, 0);
+  if( yymsp[-2].minor.yy202 ) yymsp[-2].minor.yy202->flags |= EP_InfixFunc;
 }
         break;
-      case 193: /* expr ::= expr likeop expr ESCAPE expr */
+      case 195: /* expr ::= expr likeop expr ESCAPE expr */
 {
   ExprList *pList;
   int bNot = yymsp[-3].minor.yy0.n & 0x80000000;
   yymsp[-3].minor.yy0.n &= 0x7fffffff;
-  pList = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy46);
-  pList = sqlite3ExprListAppend(pParse,pList, yymsp[-4].minor.yy46);
-  pList = sqlite3ExprListAppend(pParse,pList, yymsp[0].minor.yy46);
-  yymsp[-4].minor.yy46 = sqlite3ExprFunction(pParse, pList, &yymsp[-3].minor.yy0, 0);
-  if( bNot ) yymsp[-4].minor.yy46 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy46, 0);
-  if( yymsp[-4].minor.yy46 ) yymsp[-4].minor.yy46->flags |= EP_InfixFunc;
+  pList = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy202);
+  pList = sqlite3ExprListAppend(pParse,pList, yymsp[-4].minor.yy202);
+  pList = sqlite3ExprListAppend(pParse,pList, yymsp[0].minor.yy202);
+  yymsp[-4].minor.yy202 = sqlite3ExprFunction(pParse, pList, &yymsp[-3].minor.yy0, 0);
+  if( bNot ) yymsp[-4].minor.yy202 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy202, 0);
+  if( yymsp[-4].minor.yy202 ) yymsp[-4].minor.yy202->flags |= EP_InfixFunc;
 }
         break;
-      case 194: /* expr ::= expr ISNULL|NOTNULL */
-{yymsp[-1].minor.yy46 = sqlite3PExpr(pParse,yymsp[0].major,yymsp[-1].minor.yy46,0);}
+      case 196: /* expr ::= expr ISNULL|NOTNULL */
+{yymsp[-1].minor.yy202 = sqlite3PExpr(pParse,yymsp[0].major,yymsp[-1].minor.yy202,0);}
         break;
-      case 195: /* expr ::= expr NOT NULL */
-{yymsp[-2].minor.yy46 = sqlite3PExpr(pParse,TK_NOTNULL,yymsp[-2].minor.yy46,0);}
+      case 197: /* expr ::= expr NOT NULL */
+{yymsp[-2].minor.yy202 = sqlite3PExpr(pParse,TK_NOTNULL,yymsp[-2].minor.yy202,0);}
         break;
-      case 196: /* expr ::= expr IS expr */
+      case 198: /* expr ::= expr IS expr */
 {
-  yymsp[-2].minor.yy46 = sqlite3PExpr(pParse,TK_IS,yymsp[-2].minor.yy46,yymsp[0].minor.yy46);
-  binaryToUnaryIfNull(pParse, yymsp[0].minor.yy46, yymsp[-2].minor.yy46, TK_ISNULL);
+  yymsp[-2].minor.yy202 = sqlite3PExpr(pParse,TK_IS,yymsp[-2].minor.yy202,yymsp[0].minor.yy202);
+  binaryToUnaryIfNull(pParse, yymsp[0].minor.yy202, yymsp[-2].minor.yy202, TK_ISNULL);
 }
         break;
-      case 197: /* expr ::= expr IS NOT expr */
+      case 199: /* expr ::= expr IS NOT expr */
 {
-  yymsp[-3].minor.yy46 = sqlite3PExpr(pParse,TK_ISNOT,yymsp[-3].minor.yy46,yymsp[0].minor.yy46);
-  binaryToUnaryIfNull(pParse, yymsp[0].minor.yy46, yymsp[-3].minor.yy46, TK_NOTNULL);
+  yymsp[-3].minor.yy202 = sqlite3PExpr(pParse,TK_ISNOT,yymsp[-3].minor.yy202,yymsp[0].minor.yy202);
+  binaryToUnaryIfNull(pParse, yymsp[0].minor.yy202, yymsp[-3].minor.yy202, TK_NOTNULL);
 }
         break;
-      case 198: /* expr ::= NOT expr */
-      case 199: /* expr ::= BITNOT expr */ yytestcase(yyruleno==199);
-{yymsp[-1].minor.yy46 = sqlite3PExpr(pParse, yymsp[-1].major, yymsp[0].minor.yy46, 0);/*A-overwrites-B*/}
+      case 200: /* expr ::= NOT expr */
+      case 201: /* expr ::= BITNOT expr */ yytestcase(yyruleno==201);
+{yymsp[-1].minor.yy202 = sqlite3PExpr(pParse, yymsp[-1].major, yymsp[0].minor.yy202, 0);/*A-overwrites-B*/}
         break;
-      case 200: /* expr ::= PLUS|MINUS expr */
+      case 202: /* expr ::= PLUS|MINUS expr */
 {
-  yymsp[-1].minor.yy46 = sqlite3PExpr(pParse, yymsp[-1].major==TK_PLUS ? TK_UPLUS : TK_UMINUS, yymsp[0].minor.yy46, 0);
+  yymsp[-1].minor.yy202 = sqlite3PExpr(pParse, yymsp[-1].major==TK_PLUS ? TK_UPLUS : TK_UMINUS, yymsp[0].minor.yy202, 0);
   /*A-overwrites-B*/
 }
         break;
-      case 201: /* between_op ::= BETWEEN */
-      case 204: /* in_op ::= IN */ yytestcase(yyruleno==204);
-{yymsp[0].minor.yy32 = 0;}
+      case 203: /* between_op ::= BETWEEN */
+      case 206: /* in_op ::= IN */ yytestcase(yyruleno==206);
+{yymsp[0].minor.yy192 = 0;}
         break;
-      case 203: /* expr ::= expr between_op expr AND expr */
+      case 205: /* expr ::= expr between_op expr AND expr */
 {
-  ExprList *pList = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy46);
-  pList = sqlite3ExprListAppend(pParse,pList, yymsp[0].minor.yy46);
-  yymsp[-4].minor.yy46 = sqlite3PExpr(pParse, TK_BETWEEN, yymsp[-4].minor.yy46, 0);
-  if( yymsp[-4].minor.yy46 ){
-    yymsp[-4].minor.yy46->x.pList = pList;
+  ExprList *pList = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy202);
+  pList = sqlite3ExprListAppend(pParse,pList, yymsp[0].minor.yy202);
+  yymsp[-4].minor.yy202 = sqlite3PExpr(pParse, TK_BETWEEN, yymsp[-4].minor.yy202, 0);
+  if( yymsp[-4].minor.yy202 ){
+    yymsp[-4].minor.yy202->x.pList = pList;
   }else{
     sqlite3ExprListDelete(pParse->db, pList);
   }
-  if( yymsp[-3].minor.yy32 ) yymsp[-4].minor.yy46 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy46, 0);
+  if( yymsp[-3].minor.yy192 ) yymsp[-4].minor.yy202 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy202, 0);
 }
         break;
-      case 206: /* expr ::= expr in_op LP exprlist RP */
+      case 208: /* expr ::= expr in_op LP exprlist RP */
 {
-    if( yymsp[-1].minor.yy138==0 ){
+    if( yymsp[-1].minor.yy242==0 ){
       /* Expressions of the form
       **
       **      expr1 IN ()
@@ -158319,190 +163302,197 @@ static YYACTIONTYPE yy_reduce(
       ** simplify to constants 0 (false) and 1 (true), respectively,
       ** regardless of the value of expr1.
       */
-      sqlite3ExprUnmapAndDelete(pParse, yymsp[-4].minor.yy46);
-      yymsp[-4].minor.yy46 = sqlite3Expr(pParse->db, TK_INTEGER, yymsp[-3].minor.yy32 ? "1" : "0");
-    }else{
-      yymsp[-4].minor.yy46 = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy46, 0);
-      if( yymsp[-4].minor.yy46 ){
-        yymsp[-4].minor.yy46->x.pList = yymsp[-1].minor.yy138;
-        sqlite3ExprSetHeightAndFlags(pParse, yymsp[-4].minor.yy46);
+      sqlite3ExprUnmapAndDelete(pParse, yymsp[-4].minor.yy202);
+      yymsp[-4].minor.yy202 = sqlite3Expr(pParse->db, TK_INTEGER, yymsp[-3].minor.yy192 ? "1" : "0");
+    }else if( yymsp[-1].minor.yy242->nExpr==1 && sqlite3ExprIsConstant(yymsp[-1].minor.yy242->a[0].pExpr) ){
+      Expr *pRHS = yymsp[-1].minor.yy242->a[0].pExpr;
+      yymsp[-1].minor.yy242->a[0].pExpr = 0;
+      sqlite3ExprListDelete(pParse->db, yymsp[-1].minor.yy242);
+      pRHS = sqlite3PExpr(pParse, TK_UPLUS, pRHS, 0);
+      yymsp[-4].minor.yy202 = sqlite3PExpr(pParse, TK_EQ, yymsp[-4].minor.yy202, pRHS);
+      if( yymsp[-3].minor.yy192 ) yymsp[-4].minor.yy202 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy202, 0);
+    }else{
+      yymsp[-4].minor.yy202 = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy202, 0);
+      if( yymsp[-4].minor.yy202 ){
+        yymsp[-4].minor.yy202->x.pList = yymsp[-1].minor.yy242;
+        sqlite3ExprSetHeightAndFlags(pParse, yymsp[-4].minor.yy202);
       }else{
-        sqlite3ExprListDelete(pParse->db, yymsp[-1].minor.yy138);
+        sqlite3ExprListDelete(pParse->db, yymsp[-1].minor.yy242);
       }
-      if( yymsp[-3].minor.yy32 ) yymsp[-4].minor.yy46 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy46, 0);
+      if( yymsp[-3].minor.yy192 ) yymsp[-4].minor.yy202 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy202, 0);
     }
   }
         break;
-      case 207: /* expr ::= LP select RP */
+      case 209: /* expr ::= LP select RP */
 {
-    yymsp[-2].minor.yy46 = sqlite3PExpr(pParse, TK_SELECT, 0, 0);
-    sqlite3PExprAddSelect(pParse, yymsp[-2].minor.yy46, yymsp[-1].minor.yy25);
+    yymsp[-2].minor.yy202 = sqlite3PExpr(pParse, TK_SELECT, 0, 0);
+    sqlite3PExprAddSelect(pParse, yymsp[-2].minor.yy202, yymsp[-1].minor.yy539);
   }
         break;
-      case 208: /* expr ::= expr in_op LP select RP */
+      case 210: /* expr ::= expr in_op LP select RP */
 {
-    yymsp[-4].minor.yy46 = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy46, 0);
-    sqlite3PExprAddSelect(pParse, yymsp[-4].minor.yy46, yymsp[-1].minor.yy25);
-    if( yymsp[-3].minor.yy32 ) yymsp[-4].minor.yy46 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy46, 0);
+    yymsp[-4].minor.yy202 = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy202, 0);
+    sqlite3PExprAddSelect(pParse, yymsp[-4].minor.yy202, yymsp[-1].minor.yy539);
+    if( yymsp[-3].minor.yy192 ) yymsp[-4].minor.yy202 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy202, 0);
   }
         break;
-      case 209: /* expr ::= expr in_op nm dbnm paren_exprlist */
+      case 211: /* expr ::= expr in_op nm dbnm paren_exprlist */
 {
     SrcList *pSrc = sqlite3SrcListAppend(pParse, 0,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0);
     Select *pSelect = sqlite3SelectNew(pParse, 0,pSrc,0,0,0,0,0,0);
-    if( yymsp[0].minor.yy138 )  sqlite3SrcListFuncArgs(pParse, pSelect ? pSrc : 0, yymsp[0].minor.yy138);
-    yymsp[-4].minor.yy46 = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy46, 0);
-    sqlite3PExprAddSelect(pParse, yymsp[-4].minor.yy46, pSelect);
-    if( yymsp[-3].minor.yy32 ) yymsp[-4].minor.yy46 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy46, 0);
+    if( yymsp[0].minor.yy242 )  sqlite3SrcListFuncArgs(pParse, pSelect ? pSrc : 0, yymsp[0].minor.yy242);
+    yymsp[-4].minor.yy202 = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy202, 0);
+    sqlite3PExprAddSelect(pParse, yymsp[-4].minor.yy202, pSelect);
+    if( yymsp[-3].minor.yy192 ) yymsp[-4].minor.yy202 = sqlite3PExpr(pParse, TK_NOT, yymsp[-4].minor.yy202, 0);
   }
         break;
-      case 210: /* expr ::= EXISTS LP select RP */
+      case 212: /* expr ::= EXISTS LP select RP */
 {
     Expr *p;
-    p = yymsp[-3].minor.yy46 = sqlite3PExpr(pParse, TK_EXISTS, 0, 0);
-    sqlite3PExprAddSelect(pParse, p, yymsp[-1].minor.yy25);
+    p = yymsp[-3].minor.yy202 = sqlite3PExpr(pParse, TK_EXISTS, 0, 0);
+    sqlite3PExprAddSelect(pParse, p, yymsp[-1].minor.yy539);
   }
         break;
-      case 211: /* expr ::= CASE case_operand case_exprlist case_else END */
+      case 213: /* expr ::= CASE case_operand case_exprlist case_else END */
 {
-  yymsp[-4].minor.yy46 = sqlite3PExpr(pParse, TK_CASE, yymsp[-3].minor.yy46, 0);
-  if( yymsp[-4].minor.yy46 ){
-    yymsp[-4].minor.yy46->x.pList = yymsp[-1].minor.yy46 ? sqlite3ExprListAppend(pParse,yymsp[-2].minor.yy138,yymsp[-1].minor.yy46) : yymsp[-2].minor.yy138;
-    sqlite3ExprSetHeightAndFlags(pParse, yymsp[-4].minor.yy46);
+  yymsp[-4].minor.yy202 = sqlite3PExpr(pParse, TK_CASE, yymsp[-3].minor.yy202, 0);
+  if( yymsp[-4].minor.yy202 ){
+    yymsp[-4].minor.yy202->x.pList = yymsp[-1].minor.yy202 ? sqlite3ExprListAppend(pParse,yymsp[-2].minor.yy242,yymsp[-1].minor.yy202) : yymsp[-2].minor.yy242;
+    sqlite3ExprSetHeightAndFlags(pParse, yymsp[-4].minor.yy202);
   }else{
-    sqlite3ExprListDelete(pParse->db, yymsp[-2].minor.yy138);
-    sqlite3ExprDelete(pParse->db, yymsp[-1].minor.yy46);
+    sqlite3ExprListDelete(pParse->db, yymsp[-2].minor.yy242);
+    sqlite3ExprDelete(pParse->db, yymsp[-1].minor.yy202);
   }
 }
         break;
-      case 212: /* case_exprlist ::= case_exprlist WHEN expr THEN expr */
+      case 214: /* case_exprlist ::= case_exprlist WHEN expr THEN expr */
 {
-  yymsp[-4].minor.yy138 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy138, yymsp[-2].minor.yy46);
-  yymsp[-4].minor.yy138 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy138, yymsp[0].minor.yy46);
+  yymsp[-4].minor.yy242 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy242, yymsp[-2].minor.yy202);
+  yymsp[-4].minor.yy242 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy242, yymsp[0].minor.yy202);
 }
         break;
-      case 213: /* case_exprlist ::= WHEN expr THEN expr */
+      case 215: /* case_exprlist ::= WHEN expr THEN expr */
 {
-  yymsp[-3].minor.yy138 = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy46);
-  yymsp[-3].minor.yy138 = sqlite3ExprListAppend(pParse,yymsp[-3].minor.yy138, yymsp[0].minor.yy46);
+  yymsp[-3].minor.yy242 = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy202);
+  yymsp[-3].minor.yy242 = sqlite3ExprListAppend(pParse,yymsp[-3].minor.yy242, yymsp[0].minor.yy202);
 }
         break;
-      case 216: /* case_operand ::= expr */
-{yymsp[0].minor.yy46 = yymsp[0].minor.yy46; /*A-overwrites-X*/}
+      case 218: /* case_operand ::= expr */
+{yymsp[0].minor.yy202 = yymsp[0].minor.yy202; /*A-overwrites-X*/}
         break;
-      case 219: /* nexprlist ::= nexprlist COMMA expr */
-{yymsp[-2].minor.yy138 = sqlite3ExprListAppend(pParse,yymsp[-2].minor.yy138,yymsp[0].minor.yy46);}
+      case 221: /* nexprlist ::= nexprlist COMMA expr */
+{yymsp[-2].minor.yy242 = sqlite3ExprListAppend(pParse,yymsp[-2].minor.yy242,yymsp[0].minor.yy202);}
         break;
-      case 220: /* nexprlist ::= expr */
-{yymsp[0].minor.yy138 = sqlite3ExprListAppend(pParse,0,yymsp[0].minor.yy46); /*A-overwrites-Y*/}
+      case 222: /* nexprlist ::= expr */
+{yymsp[0].minor.yy242 = sqlite3ExprListAppend(pParse,0,yymsp[0].minor.yy202); /*A-overwrites-Y*/}
         break;
-      case 222: /* paren_exprlist ::= LP exprlist RP */
-      case 227: /* eidlist_opt ::= LP eidlist RP */ yytestcase(yyruleno==227);
-{yymsp[-2].minor.yy138 = yymsp[-1].minor.yy138;}
+      case 224: /* paren_exprlist ::= LP exprlist RP */
+      case 229: /* eidlist_opt ::= LP eidlist RP */ yytestcase(yyruleno==229);
+{yymsp[-2].minor.yy242 = yymsp[-1].minor.yy242;}
         break;
-      case 223: /* cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt */
+      case 225: /* cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt */
 {
   sqlite3CreateIndex(pParse, &yymsp[-7].minor.yy0, &yymsp[-6].minor.yy0,
-                     sqlite3SrcListAppend(pParse,0,&yymsp[-4].minor.yy0,0), yymsp[-2].minor.yy138, yymsp[-10].minor.yy32,
-                      &yymsp[-11].minor.yy0, yymsp[0].minor.yy46, SQLITE_SO_ASC, yymsp[-8].minor.yy32, SQLITE_IDXTYPE_APPDEF);
+                     sqlite3SrcListAppend(pParse,0,&yymsp[-4].minor.yy0,0), yymsp[-2].minor.yy242, yymsp[-10].minor.yy192,
+                      &yymsp[-11].minor.yy0, yymsp[0].minor.yy202, SQLITE_SO_ASC, yymsp[-8].minor.yy192, SQLITE_IDXTYPE_APPDEF);
   if( IN_RENAME_OBJECT && pParse->pNewIndex ){
     sqlite3RenameTokenMap(pParse, pParse->pNewIndex->zName, &yymsp[-4].minor.yy0);
   }
 }
         break;
-      case 224: /* uniqueflag ::= UNIQUE */
-      case 266: /* raisetype ::= ABORT */ yytestcase(yyruleno==266);
-{yymsp[0].minor.yy32 = OE_Abort;}
+      case 226: /* uniqueflag ::= UNIQUE */
+      case 268: /* raisetype ::= ABORT */ yytestcase(yyruleno==268);
+{yymsp[0].minor.yy192 = OE_Abort;}
         break;
-      case 225: /* uniqueflag ::= */
-{yymsp[1].minor.yy32 = OE_None;}
+      case 227: /* uniqueflag ::= */
+{yymsp[1].minor.yy192 = OE_None;}
         break;
-      case 228: /* eidlist ::= eidlist COMMA nm collate sortorder */
+      case 230: /* eidlist ::= eidlist COMMA nm collate sortorder */
 {
-  yymsp[-4].minor.yy138 = parserAddExprIdListTerm(pParse, yymsp[-4].minor.yy138, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy32, yymsp[0].minor.yy32);
+  yymsp[-4].minor.yy242 = parserAddExprIdListTerm(pParse, yymsp[-4].minor.yy242, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy192, yymsp[0].minor.yy192);
 }
         break;
-      case 229: /* eidlist ::= nm collate sortorder */
+      case 231: /* eidlist ::= nm collate sortorder */
 {
-  yymsp[-2].minor.yy138 = parserAddExprIdListTerm(pParse, 0, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy32, yymsp[0].minor.yy32); /*A-overwrites-Y*/
+  yymsp[-2].minor.yy242 = parserAddExprIdListTerm(pParse, 0, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy192, yymsp[0].minor.yy192); /*A-overwrites-Y*/
 }
         break;
-      case 232: /* cmd ::= DROP INDEX ifexists fullname */
-{sqlite3DropIndex(pParse, yymsp[0].minor.yy609, yymsp[-1].minor.yy32);}
+      case 234: /* cmd ::= DROP INDEX ifexists fullname */
+{sqlite3DropIndex(pParse, yymsp[0].minor.yy47, yymsp[-1].minor.yy192);}
         break;
-      case 233: /* cmd ::= VACUUM vinto */
-{sqlite3Vacuum(pParse,0,yymsp[0].minor.yy46);}
+      case 235: /* cmd ::= VACUUM vinto */
+{sqlite3Vacuum(pParse,0,yymsp[0].minor.yy202);}
         break;
-      case 234: /* cmd ::= VACUUM nm vinto */
-{sqlite3Vacuum(pParse,&yymsp[-1].minor.yy0,yymsp[0].minor.yy46);}
+      case 236: /* cmd ::= VACUUM nm vinto */
+{sqlite3Vacuum(pParse,&yymsp[-1].minor.yy0,yymsp[0].minor.yy202);}
         break;
-      case 237: /* cmd ::= PRAGMA nm dbnm */
+      case 239: /* cmd ::= PRAGMA nm dbnm */
 {sqlite3Pragma(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0,0,0);}
         break;
-      case 238: /* cmd ::= PRAGMA nm dbnm EQ nmnum */
+      case 240: /* cmd ::= PRAGMA nm dbnm EQ nmnum */
 {sqlite3Pragma(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0,0);}
         break;
-      case 239: /* cmd ::= PRAGMA nm dbnm LP nmnum RP */
+      case 241: /* cmd ::= PRAGMA nm dbnm LP nmnum RP */
 {sqlite3Pragma(pParse,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,&yymsp[-1].minor.yy0,0);}
         break;
-      case 240: /* cmd ::= PRAGMA nm dbnm EQ minus_num */
+      case 242: /* cmd ::= PRAGMA nm dbnm EQ minus_num */
 {sqlite3Pragma(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0,1);}
         break;
-      case 241: /* cmd ::= PRAGMA nm dbnm LP minus_num RP */
+      case 243: /* cmd ::= PRAGMA nm dbnm LP minus_num RP */
 {sqlite3Pragma(pParse,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,&yymsp[-1].minor.yy0,1);}
         break;
-      case 244: /* cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */
+      case 246: /* cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */
 {
   Token all;
   all.z = yymsp[-3].minor.yy0.z;
   all.n = (int)(yymsp[0].minor.yy0.z - yymsp[-3].minor.yy0.z) + yymsp[0].minor.yy0.n;
-  sqlite3FinishTrigger(pParse, yymsp[-1].minor.yy527, &all);
+  sqlite3FinishTrigger(pParse, yymsp[-1].minor.yy447, &all);
 }
         break;
-      case 245: /* trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */
+      case 247: /* trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */
 {
-  sqlite3BeginTrigger(pParse, &yymsp[-7].minor.yy0, &yymsp[-6].minor.yy0, yymsp[-5].minor.yy32, yymsp[-4].minor.yy572.a, yymsp[-4].minor.yy572.b, yymsp[-2].minor.yy609, yymsp[0].minor.yy46, yymsp[-10].minor.yy32, yymsp[-8].minor.yy32);
+  sqlite3BeginTrigger(pParse, &yymsp[-7].minor.yy0, &yymsp[-6].minor.yy0, yymsp[-5].minor.yy192, yymsp[-4].minor.yy230.a, yymsp[-4].minor.yy230.b, yymsp[-2].minor.yy47, yymsp[0].minor.yy202, yymsp[-10].minor.yy192, yymsp[-8].minor.yy192);
   yymsp[-10].minor.yy0 = (yymsp[-6].minor.yy0.n==0?yymsp[-7].minor.yy0:yymsp[-6].minor.yy0); /*A-overwrites-T*/
 }
         break;
-      case 246: /* trigger_time ::= BEFORE|AFTER */
-{ yymsp[0].minor.yy32 = yymsp[0].major; /*A-overwrites-X*/ }
+      case 248: /* trigger_time ::= BEFORE|AFTER */
+{ yymsp[0].minor.yy192 = yymsp[0].major; /*A-overwrites-X*/ }
         break;
-      case 247: /* trigger_time ::= INSTEAD OF */
-{ yymsp[-1].minor.yy32 = TK_INSTEAD;}
+      case 249: /* trigger_time ::= INSTEAD OF */
+{ yymsp[-1].minor.yy192 = TK_INSTEAD;}
         break;
-      case 248: /* trigger_time ::= */
-{ yymsp[1].minor.yy32 = TK_BEFORE; }
+      case 250: /* trigger_time ::= */
+{ yymsp[1].minor.yy192 = TK_BEFORE; }
         break;
-      case 249: /* trigger_event ::= DELETE|INSERT */
-      case 250: /* trigger_event ::= UPDATE */ yytestcase(yyruleno==250);
-{yymsp[0].minor.yy572.a = yymsp[0].major; /*A-overwrites-X*/ yymsp[0].minor.yy572.b = 0;}
+      case 251: /* trigger_event ::= DELETE|INSERT */
+      case 252: /* trigger_event ::= UPDATE */ yytestcase(yyruleno==252);
+{yymsp[0].minor.yy230.a = yymsp[0].major; /*A-overwrites-X*/ yymsp[0].minor.yy230.b = 0;}
         break;
-      case 251: /* trigger_event ::= UPDATE OF idlist */
-{yymsp[-2].minor.yy572.a = TK_UPDATE; yymsp[-2].minor.yy572.b = yymsp[0].minor.yy406;}
+      case 253: /* trigger_event ::= UPDATE OF idlist */
+{yymsp[-2].minor.yy230.a = TK_UPDATE; yymsp[-2].minor.yy230.b = yymsp[0].minor.yy600;}
         break;
-      case 252: /* when_clause ::= */
-      case 271: /* key_opt ::= */ yytestcase(yyruleno==271);
-{ yymsp[1].minor.yy46 = 0; }
+      case 254: /* when_clause ::= */
+      case 273: /* key_opt ::= */ yytestcase(yyruleno==273);
+{ yymsp[1].minor.yy202 = 0; }
         break;
-      case 253: /* when_clause ::= WHEN expr */
-      case 272: /* key_opt ::= KEY expr */ yytestcase(yyruleno==272);
-{ yymsp[-1].minor.yy46 = yymsp[0].minor.yy46; }
+      case 255: /* when_clause ::= WHEN expr */
+      case 274: /* key_opt ::= KEY expr */ yytestcase(yyruleno==274);
+{ yymsp[-1].minor.yy202 = yymsp[0].minor.yy202; }
         break;
-      case 254: /* trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */
+      case 256: /* trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */
 {
-  assert( yymsp[-2].minor.yy527!=0 );
-  yymsp[-2].minor.yy527->pLast->pNext = yymsp[-1].minor.yy527;
-  yymsp[-2].minor.yy527->pLast = yymsp[-1].minor.yy527;
+  assert( yymsp[-2].minor.yy447!=0 );
+  yymsp[-2].minor.yy447->pLast->pNext = yymsp[-1].minor.yy447;
+  yymsp[-2].minor.yy447->pLast = yymsp[-1].minor.yy447;
 }
         break;
-      case 255: /* trigger_cmd_list ::= trigger_cmd SEMI */
+      case 257: /* trigger_cmd_list ::= trigger_cmd SEMI */
 {
-  assert( yymsp[-1].minor.yy527!=0 );
-  yymsp[-1].minor.yy527->pLast = yymsp[-1].minor.yy527;
+  assert( yymsp[-1].minor.yy447!=0 );
+  yymsp[-1].minor.yy447->pLast = yymsp[-1].minor.yy447;
 }
         break;
-      case 256: /* trnm ::= nm DOT nm */
+      case 258: /* trnm ::= nm DOT nm */
 {
   yymsp[-2].minor.yy0 = yymsp[0].minor.yy0;
   sqlite3ErrorMsg(pParse,
@@ -158510,342 +163500,344 @@ static YYACTIONTYPE yy_reduce(
         "statements within triggers");
 }
         break;
-      case 257: /* tridxby ::= INDEXED BY nm */
+      case 259: /* tridxby ::= INDEXED BY nm */
 {
   sqlite3ErrorMsg(pParse,
         "the INDEXED BY clause is not allowed on UPDATE or DELETE statements "
         "within triggers");
 }
         break;
-      case 258: /* tridxby ::= NOT INDEXED */
+      case 260: /* tridxby ::= NOT INDEXED */
 {
   sqlite3ErrorMsg(pParse,
         "the NOT INDEXED clause is not allowed on UPDATE or DELETE statements "
         "within triggers");
 }
         break;
-      case 259: /* trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt scanpt */
-{yylhsminor.yy527 = sqlite3TriggerUpdateStep(pParse, &yymsp[-5].minor.yy0, yymsp[-2].minor.yy138, yymsp[-1].minor.yy46, yymsp[-6].minor.yy32, yymsp[-7].minor.yy0.z, yymsp[0].minor.yy8);}
-  yymsp[-7].minor.yy527 = yylhsminor.yy527;
+      case 261: /* trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist from where_opt scanpt */
+{yylhsminor.yy447 = sqlite3TriggerUpdateStep(pParse, &yymsp[-6].minor.yy0, yymsp[-2].minor.yy47, yymsp[-3].minor.yy242, yymsp[-1].minor.yy202, yymsp[-7].minor.yy192, yymsp[-8].minor.yy0.z, yymsp[0].minor.yy436);}
+  yymsp[-8].minor.yy447 = yylhsminor.yy447;
         break;
-      case 260: /* trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt */
+      case 262: /* trigger_cmd ::= scanpt insert_cmd INTO trnm idlist_opt select upsert scanpt */
 {
-   yylhsminor.yy527 = sqlite3TriggerInsertStep(pParse,&yymsp[-4].minor.yy0,yymsp[-3].minor.yy406,yymsp[-2].minor.yy25,yymsp[-6].minor.yy32,yymsp[-1].minor.yy288,yymsp[-7].minor.yy8,yymsp[0].minor.yy8);/*yylhsminor.yy527-overwrites-yymsp[-6].minor.yy32*/
+   yylhsminor.yy447 = sqlite3TriggerInsertStep(pParse,&yymsp[-4].minor.yy0,yymsp[-3].minor.yy600,yymsp[-2].minor.yy539,yymsp[-6].minor.yy192,yymsp[-1].minor.yy318,yymsp[-7].minor.yy436,yymsp[0].minor.yy436);/*yylhsminor.yy447-overwrites-yymsp[-6].minor.yy192*/
 }
-  yymsp[-7].minor.yy527 = yylhsminor.yy527;
+  yymsp[-7].minor.yy447 = yylhsminor.yy447;
         break;
-      case 261: /* trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt */
-{yylhsminor.yy527 = sqlite3TriggerDeleteStep(pParse, &yymsp[-3].minor.yy0, yymsp[-1].minor.yy46, yymsp[-5].minor.yy0.z, yymsp[0].minor.yy8);}
-  yymsp[-5].minor.yy527 = yylhsminor.yy527;
+      case 263: /* trigger_cmd ::= DELETE FROM trnm tridxby where_opt scanpt */
+{yylhsminor.yy447 = sqlite3TriggerDeleteStep(pParse, &yymsp[-3].minor.yy0, yymsp[-1].minor.yy202, yymsp[-5].minor.yy0.z, yymsp[0].minor.yy436);}
+  yymsp[-5].minor.yy447 = yylhsminor.yy447;
         break;
-      case 262: /* trigger_cmd ::= scanpt select scanpt */
-{yylhsminor.yy527 = sqlite3TriggerSelectStep(pParse->db, yymsp[-1].minor.yy25, yymsp[-2].minor.yy8, yymsp[0].minor.yy8); /*yylhsminor.yy527-overwrites-yymsp[-1].minor.yy25*/}
-  yymsp[-2].minor.yy527 = yylhsminor.yy527;
+      case 264: /* trigger_cmd ::= scanpt select scanpt */
+{yylhsminor.yy447 = sqlite3TriggerSelectStep(pParse->db, yymsp[-1].minor.yy539, yymsp[-2].minor.yy436, yymsp[0].minor.yy436); /*yylhsminor.yy447-overwrites-yymsp[-1].minor.yy539*/}
+  yymsp[-2].minor.yy447 = yylhsminor.yy447;
         break;
-      case 263: /* expr ::= RAISE LP IGNORE RP */
+      case 265: /* expr ::= RAISE LP IGNORE RP */
 {
-  yymsp[-3].minor.yy46 = sqlite3PExpr(pParse, TK_RAISE, 0, 0);
-  if( yymsp[-3].minor.yy46 ){
-    yymsp[-3].minor.yy46->affExpr = OE_Ignore;
+  yymsp[-3].minor.yy202 = sqlite3PExpr(pParse, TK_RAISE, 0, 0);
+  if( yymsp[-3].minor.yy202 ){
+    yymsp[-3].minor.yy202->affExpr = OE_Ignore;
   }
 }
         break;
-      case 264: /* expr ::= RAISE LP raisetype COMMA nm RP */
+      case 266: /* expr ::= RAISE LP raisetype COMMA nm RP */
 {
-  yymsp[-5].minor.yy46 = sqlite3ExprAlloc(pParse->db, TK_RAISE, &yymsp[-1].minor.yy0, 1);
-  if( yymsp[-5].minor.yy46 ) {
-    yymsp[-5].minor.yy46->affExpr = (char)yymsp[-3].minor.yy32;
+  yymsp[-5].minor.yy202 = sqlite3ExprAlloc(pParse->db, TK_RAISE, &yymsp[-1].minor.yy0, 1);
+  if( yymsp[-5].minor.yy202 ) {
+    yymsp[-5].minor.yy202->affExpr = (char)yymsp[-3].minor.yy192;
   }
 }
         break;
-      case 265: /* raisetype ::= ROLLBACK */
-{yymsp[0].minor.yy32 = OE_Rollback;}
+      case 267: /* raisetype ::= ROLLBACK */
+{yymsp[0].minor.yy192 = OE_Rollback;}
         break;
-      case 267: /* raisetype ::= FAIL */
-{yymsp[0].minor.yy32 = OE_Fail;}
+      case 269: /* raisetype ::= FAIL */
+{yymsp[0].minor.yy192 = OE_Fail;}
         break;
-      case 268: /* cmd ::= DROP TRIGGER ifexists fullname */
+      case 270: /* cmd ::= DROP TRIGGER ifexists fullname */
 {
-  sqlite3DropTrigger(pParse,yymsp[0].minor.yy609,yymsp[-1].minor.yy32);
+  sqlite3DropTrigger(pParse,yymsp[0].minor.yy47,yymsp[-1].minor.yy192);
 }
         break;
-      case 269: /* cmd ::= ATTACH database_kw_opt expr AS expr key_opt */
+      case 271: /* cmd ::= ATTACH database_kw_opt expr AS expr key_opt */
 {
-  sqlite3Attach(pParse, yymsp[-3].minor.yy46, yymsp[-1].minor.yy46, yymsp[0].minor.yy46);
+  sqlite3Attach(pParse, yymsp[-3].minor.yy202, yymsp[-1].minor.yy202, yymsp[0].minor.yy202);
 }
         break;
-      case 270: /* cmd ::= DETACH database_kw_opt expr */
+      case 272: /* cmd ::= DETACH database_kw_opt expr */
 {
-  sqlite3Detach(pParse, yymsp[0].minor.yy46);
+  sqlite3Detach(pParse, yymsp[0].minor.yy202);
 }
         break;
-      case 273: /* cmd ::= REINDEX */
+      case 275: /* cmd ::= REINDEX */
 {sqlite3Reindex(pParse, 0, 0);}
         break;
-      case 274: /* cmd ::= REINDEX nm dbnm */
+      case 276: /* cmd ::= REINDEX nm dbnm */
 {sqlite3Reindex(pParse, &yymsp[-1].minor.yy0, &yymsp[0].minor.yy0);}
         break;
-      case 275: /* cmd ::= ANALYZE */
+      case 277: /* cmd ::= ANALYZE */
 {sqlite3Analyze(pParse, 0, 0);}
         break;
-      case 276: /* cmd ::= ANALYZE nm dbnm */
+      case 278: /* cmd ::= ANALYZE nm dbnm */
 {sqlite3Analyze(pParse, &yymsp[-1].minor.yy0, &yymsp[0].minor.yy0);}
         break;
-      case 277: /* cmd ::= ALTER TABLE fullname RENAME TO nm */
+      case 279: /* cmd ::= ALTER TABLE fullname RENAME TO nm */
 {
-  sqlite3AlterRenameTable(pParse,yymsp[-3].minor.yy609,&yymsp[0].minor.yy0);
+  sqlite3AlterRenameTable(pParse,yymsp[-3].minor.yy47,&yymsp[0].minor.yy0);
 }
         break;
-      case 278: /* cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist */
+      case 280: /* cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt columnname carglist */
 {
   yymsp[-1].minor.yy0.n = (int)(pParse->sLastToken.z-yymsp[-1].minor.yy0.z) + pParse->sLastToken.n;
   sqlite3AlterFinishAddColumn(pParse, &yymsp[-1].minor.yy0);
 }
         break;
-      case 279: /* add_column_fullname ::= fullname */
+      case 281: /* add_column_fullname ::= fullname */
 {
   disableLookaside(pParse);
-  sqlite3AlterBeginAddColumn(pParse, yymsp[0].minor.yy609);
+  sqlite3AlterBeginAddColumn(pParse, yymsp[0].minor.yy47);
 }
         break;
-      case 280: /* cmd ::= ALTER TABLE fullname RENAME kwcolumn_opt nm TO nm */
+      case 282: /* cmd ::= ALTER TABLE fullname RENAME kwcolumn_opt nm TO nm */
 {
-  sqlite3AlterRenameColumn(pParse, yymsp[-5].minor.yy609, &yymsp[-2].minor.yy0, &yymsp[0].minor.yy0);
+  sqlite3AlterRenameColumn(pParse, yymsp[-5].minor.yy47, &yymsp[-2].minor.yy0, &yymsp[0].minor.yy0);
 }
         break;
-      case 281: /* cmd ::= create_vtab */
+      case 283: /* cmd ::= create_vtab */
 {sqlite3VtabFinishParse(pParse,0);}
         break;
-      case 282: /* cmd ::= create_vtab LP vtabarglist RP */
+      case 284: /* cmd ::= create_vtab LP vtabarglist RP */
 {sqlite3VtabFinishParse(pParse,&yymsp[0].minor.yy0);}
         break;
-      case 283: /* create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */
+      case 285: /* create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */
 {
-    sqlite3VtabBeginParse(pParse, &yymsp[-3].minor.yy0, &yymsp[-2].minor.yy0, &yymsp[0].minor.yy0, yymsp[-4].minor.yy32);
+    sqlite3VtabBeginParse(pParse, &yymsp[-3].minor.yy0, &yymsp[-2].minor.yy0, &yymsp[0].minor.yy0, yymsp[-4].minor.yy192);
 }
         break;
-      case 284: /* vtabarg ::= */
+      case 286: /* vtabarg ::= */
 {sqlite3VtabArgInit(pParse);}
         break;
-      case 285: /* vtabargtoken ::= ANY */
-      case 286: /* vtabargtoken ::= lp anylist RP */ yytestcase(yyruleno==286);
-      case 287: /* lp ::= LP */ yytestcase(yyruleno==287);
+      case 287: /* vtabargtoken ::= ANY */
+      case 288: /* vtabargtoken ::= lp anylist RP */ yytestcase(yyruleno==288);
+      case 289: /* lp ::= LP */ yytestcase(yyruleno==289);
 {sqlite3VtabArgExtend(pParse,&yymsp[0].minor.yy0);}
         break;
-      case 288: /* with ::= WITH wqlist */
-      case 289: /* with ::= WITH RECURSIVE wqlist */ yytestcase(yyruleno==289);
-{ sqlite3WithPush(pParse, yymsp[0].minor.yy297, 1); }
+      case 290: /* with ::= WITH wqlist */
+      case 291: /* with ::= WITH RECURSIVE wqlist */ yytestcase(yyruleno==291);
+{ sqlite3WithPush(pParse, yymsp[0].minor.yy131, 1); }
         break;
-      case 290: /* wqlist ::= nm eidlist_opt AS LP select RP */
+      case 292: /* wqlist ::= nm eidlist_opt AS LP select RP */
 {
-  yymsp[-5].minor.yy297 = sqlite3WithAdd(pParse, 0, &yymsp[-5].minor.yy0, yymsp[-4].minor.yy138, yymsp[-1].minor.yy25); /*A-overwrites-X*/
+  yymsp[-5].minor.yy131 = sqlite3WithAdd(pParse, 0, &yymsp[-5].minor.yy0, yymsp[-4].minor.yy242, yymsp[-1].minor.yy539); /*A-overwrites-X*/
 }
         break;
-      case 291: /* wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP */
+      case 293: /* wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP */
 {
-  yymsp[-7].minor.yy297 = sqlite3WithAdd(pParse, yymsp[-7].minor.yy297, &yymsp[-5].minor.yy0, yymsp[-4].minor.yy138, yymsp[-1].minor.yy25);
+  yymsp[-7].minor.yy131 = sqlite3WithAdd(pParse, yymsp[-7].minor.yy131, &yymsp[-5].minor.yy0, yymsp[-4].minor.yy242, yymsp[-1].minor.yy539);
 }
         break;
-      case 292: /* windowdefn_list ::= windowdefn */
-{ yylhsminor.yy455 = yymsp[0].minor.yy455; }
-  yymsp[0].minor.yy455 = yylhsminor.yy455;
+      case 294: /* windowdefn_list ::= windowdefn */
+{ yylhsminor.yy303 = yymsp[0].minor.yy303; }
+  yymsp[0].minor.yy303 = yylhsminor.yy303;
         break;
-      case 293: /* windowdefn_list ::= windowdefn_list COMMA windowdefn */
+      case 295: /* windowdefn_list ::= windowdefn_list COMMA windowdefn */
 {
-  assert( yymsp[0].minor.yy455!=0 );
-  sqlite3WindowChain(pParse, yymsp[0].minor.yy455, yymsp[-2].minor.yy455);
-  yymsp[0].minor.yy455->pNextWin = yymsp[-2].minor.yy455;
-  yylhsminor.yy455 = yymsp[0].minor.yy455;
+  assert( yymsp[0].minor.yy303!=0 );
+  sqlite3WindowChain(pParse, yymsp[0].minor.yy303, yymsp[-2].minor.yy303);
+  yymsp[0].minor.yy303->pNextWin = yymsp[-2].minor.yy303;
+  yylhsminor.yy303 = yymsp[0].minor.yy303;
 }
-  yymsp[-2].minor.yy455 = yylhsminor.yy455;
+  yymsp[-2].minor.yy303 = yylhsminor.yy303;
         break;
-      case 294: /* windowdefn ::= nm AS LP window RP */
+      case 296: /* windowdefn ::= nm AS LP window RP */
 {
-  if( ALWAYS(yymsp[-1].minor.yy455) ){
-    yymsp[-1].minor.yy455->zName = sqlite3DbStrNDup(pParse->db, yymsp[-4].minor.yy0.z, yymsp[-4].minor.yy0.n);
+  if( ALWAYS(yymsp[-1].minor.yy303) ){
+    yymsp[-1].minor.yy303->zName = sqlite3DbStrNDup(pParse->db, yymsp[-4].minor.yy0.z, yymsp[-4].minor.yy0.n);
   }
-  yylhsminor.yy455 = yymsp[-1].minor.yy455;
+  yylhsminor.yy303 = yymsp[-1].minor.yy303;
 }
-  yymsp[-4].minor.yy455 = yylhsminor.yy455;
+  yymsp[-4].minor.yy303 = yylhsminor.yy303;
         break;
-      case 295: /* window ::= PARTITION BY nexprlist orderby_opt frame_opt */
+      case 297: /* window ::= PARTITION BY nexprlist orderby_opt frame_opt */
 {
-  yymsp[-4].minor.yy455 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy455, yymsp[-2].minor.yy138, yymsp[-1].minor.yy138, 0);
+  yymsp[-4].minor.yy303 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy303, yymsp[-2].minor.yy242, yymsp[-1].minor.yy242, 0);
 }
         break;
-      case 296: /* window ::= nm PARTITION BY nexprlist orderby_opt frame_opt */
+      case 298: /* window ::= nm PARTITION BY nexprlist orderby_opt frame_opt */
 {
-  yylhsminor.yy455 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy455, yymsp[-2].minor.yy138, yymsp[-1].minor.yy138, &yymsp[-5].minor.yy0);
+  yylhsminor.yy303 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy303, yymsp[-2].minor.yy242, yymsp[-1].minor.yy242, &yymsp[-5].minor.yy0);
 }
-  yymsp[-5].minor.yy455 = yylhsminor.yy455;
+  yymsp[-5].minor.yy303 = yylhsminor.yy303;
         break;
-      case 297: /* window ::= ORDER BY sortlist frame_opt */
+      case 299: /* window ::= ORDER BY sortlist frame_opt */
 {
-  yymsp[-3].minor.yy455 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy455, 0, yymsp[-1].minor.yy138, 0);
+  yymsp[-3].minor.yy303 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy303, 0, yymsp[-1].minor.yy242, 0);
 }
         break;
-      case 298: /* window ::= nm ORDER BY sortlist frame_opt */
+      case 300: /* window ::= nm ORDER BY sortlist frame_opt */
 {
-  yylhsminor.yy455 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy455, 0, yymsp[-1].minor.yy138, &yymsp[-4].minor.yy0);
+  yylhsminor.yy303 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy303, 0, yymsp[-1].minor.yy242, &yymsp[-4].minor.yy0);
 }
-  yymsp[-4].minor.yy455 = yylhsminor.yy455;
+  yymsp[-4].minor.yy303 = yylhsminor.yy303;
         break;
-      case 299: /* window ::= frame_opt */
-      case 318: /* filter_over ::= over_clause */ yytestcase(yyruleno==318);
+      case 301: /* window ::= frame_opt */
+      case 320: /* filter_over ::= over_clause */ yytestcase(yyruleno==320);
 {
-  yylhsminor.yy455 = yymsp[0].minor.yy455;
+  yylhsminor.yy303 = yymsp[0].minor.yy303;
 }
-  yymsp[0].minor.yy455 = yylhsminor.yy455;
+  yymsp[0].minor.yy303 = yylhsminor.yy303;
         break;
-      case 300: /* window ::= nm frame_opt */
+      case 302: /* window ::= nm frame_opt */
 {
-  yylhsminor.yy455 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy455, 0, 0, &yymsp[-1].minor.yy0);
+  yylhsminor.yy303 = sqlite3WindowAssemble(pParse, yymsp[0].minor.yy303, 0, 0, &yymsp[-1].minor.yy0);
 }
-  yymsp[-1].minor.yy455 = yylhsminor.yy455;
+  yymsp[-1].minor.yy303 = yylhsminor.yy303;
         break;
-      case 301: /* frame_opt ::= */
+      case 303: /* frame_opt ::= */
 {
-  yymsp[1].minor.yy455 = sqlite3WindowAlloc(pParse, 0, TK_UNBOUNDED, 0, TK_CURRENT, 0, 0);
+  yymsp[1].minor.yy303 = sqlite3WindowAlloc(pParse, 0, TK_UNBOUNDED, 0, TK_CURRENT, 0, 0);
 }
         break;
-      case 302: /* frame_opt ::= range_or_rows frame_bound_s frame_exclude_opt */
+      case 304: /* frame_opt ::= range_or_rows frame_bound_s frame_exclude_opt */
 {
-  yylhsminor.yy455 = sqlite3WindowAlloc(pParse, yymsp[-2].minor.yy32, yymsp[-1].minor.yy57.eType, yymsp[-1].minor.yy57.pExpr, TK_CURRENT, 0, yymsp[0].minor.yy118);
+  yylhsminor.yy303 = sqlite3WindowAlloc(pParse, yymsp[-2].minor.yy192, yymsp[-1].minor.yy77.eType, yymsp[-1].minor.yy77.pExpr, TK_CURRENT, 0, yymsp[0].minor.yy58);
 }
-  yymsp[-2].minor.yy455 = yylhsminor.yy455;
+  yymsp[-2].minor.yy303 = yylhsminor.yy303;
         break;
-      case 303: /* frame_opt ::= range_or_rows BETWEEN frame_bound_s AND frame_bound_e frame_exclude_opt */
+      case 305: /* frame_opt ::= range_or_rows BETWEEN frame_bound_s AND frame_bound_e frame_exclude_opt */
 {
-  yylhsminor.yy455 = sqlite3WindowAlloc(pParse, yymsp[-5].minor.yy32, yymsp[-3].minor.yy57.eType, yymsp[-3].minor.yy57.pExpr, yymsp[-1].minor.yy57.eType, yymsp[-1].minor.yy57.pExpr, yymsp[0].minor.yy118);
+  yylhsminor.yy303 = sqlite3WindowAlloc(pParse, yymsp[-5].minor.yy192, yymsp[-3].minor.yy77.eType, yymsp[-3].minor.yy77.pExpr, yymsp[-1].minor.yy77.eType, yymsp[-1].minor.yy77.pExpr, yymsp[0].minor.yy58);
 }
-  yymsp[-5].minor.yy455 = yylhsminor.yy455;
+  yymsp[-5].minor.yy303 = yylhsminor.yy303;
         break;
-      case 305: /* frame_bound_s ::= frame_bound */
-      case 307: /* frame_bound_e ::= frame_bound */ yytestcase(yyruleno==307);
-{yylhsminor.yy57 = yymsp[0].minor.yy57;}
-  yymsp[0].minor.yy57 = yylhsminor.yy57;
+      case 307: /* frame_bound_s ::= frame_bound */
+      case 309: /* frame_bound_e ::= frame_bound */ yytestcase(yyruleno==309);
+{yylhsminor.yy77 = yymsp[0].minor.yy77;}
+  yymsp[0].minor.yy77 = yylhsminor.yy77;
         break;
-      case 306: /* frame_bound_s ::= UNBOUNDED PRECEDING */
-      case 308: /* frame_bound_e ::= UNBOUNDED FOLLOWING */ yytestcase(yyruleno==308);
-      case 310: /* frame_bound ::= CURRENT ROW */ yytestcase(yyruleno==310);
-{yylhsminor.yy57.eType = yymsp[-1].major; yylhsminor.yy57.pExpr = 0;}
-  yymsp[-1].minor.yy57 = yylhsminor.yy57;
+      case 308: /* frame_bound_s ::= UNBOUNDED PRECEDING */
+      case 310: /* frame_bound_e ::= UNBOUNDED FOLLOWING */ yytestcase(yyruleno==310);
+      case 312: /* frame_bound ::= CURRENT ROW */ yytestcase(yyruleno==312);
+{yylhsminor.yy77.eType = yymsp[-1].major; yylhsminor.yy77.pExpr = 0;}
+  yymsp[-1].minor.yy77 = yylhsminor.yy77;
         break;
-      case 309: /* frame_bound ::= expr PRECEDING|FOLLOWING */
-{yylhsminor.yy57.eType = yymsp[0].major; yylhsminor.yy57.pExpr = yymsp[-1].minor.yy46;}
-  yymsp[-1].minor.yy57 = yylhsminor.yy57;
+      case 311: /* frame_bound ::= expr PRECEDING|FOLLOWING */
+{yylhsminor.yy77.eType = yymsp[0].major; yylhsminor.yy77.pExpr = yymsp[-1].minor.yy202;}
+  yymsp[-1].minor.yy77 = yylhsminor.yy77;
         break;
-      case 311: /* frame_exclude_opt ::= */
-{yymsp[1].minor.yy118 = 0;}
+      case 313: /* frame_exclude_opt ::= */
+{yymsp[1].minor.yy58 = 0;}
         break;
-      case 312: /* frame_exclude_opt ::= EXCLUDE frame_exclude */
-{yymsp[-1].minor.yy118 = yymsp[0].minor.yy118;}
+      case 314: /* frame_exclude_opt ::= EXCLUDE frame_exclude */
+{yymsp[-1].minor.yy58 = yymsp[0].minor.yy58;}
         break;
-      case 313: /* frame_exclude ::= NO OTHERS */
-      case 314: /* frame_exclude ::= CURRENT ROW */ yytestcase(yyruleno==314);
-{yymsp[-1].minor.yy118 = yymsp[-1].major; /*A-overwrites-X*/}
+      case 315: /* frame_exclude ::= NO OTHERS */
+      case 316: /* frame_exclude ::= CURRENT ROW */ yytestcase(yyruleno==316);
+{yymsp[-1].minor.yy58 = yymsp[-1].major; /*A-overwrites-X*/}
         break;
-      case 315: /* frame_exclude ::= GROUP|TIES */
-{yymsp[0].minor.yy118 = yymsp[0].major; /*A-overwrites-X*/}
+      case 317: /* frame_exclude ::= GROUP|TIES */
+{yymsp[0].minor.yy58 = yymsp[0].major; /*A-overwrites-X*/}
         break;
-      case 316: /* window_clause ::= WINDOW windowdefn_list */
-{ yymsp[-1].minor.yy455 = yymsp[0].minor.yy455; }
+      case 318: /* window_clause ::= WINDOW windowdefn_list */
+{ yymsp[-1].minor.yy303 = yymsp[0].minor.yy303; }
         break;
-      case 317: /* filter_over ::= filter_clause over_clause */
+      case 319: /* filter_over ::= filter_clause over_clause */
 {
-  yymsp[0].minor.yy455->pFilter = yymsp[-1].minor.yy46;
-  yylhsminor.yy455 = yymsp[0].minor.yy455;
+  yymsp[0].minor.yy303->pFilter = yymsp[-1].minor.yy202;
+  yylhsminor.yy303 = yymsp[0].minor.yy303;
 }
-  yymsp[-1].minor.yy455 = yylhsminor.yy455;
+  yymsp[-1].minor.yy303 = yylhsminor.yy303;
         break;
-      case 319: /* filter_over ::= filter_clause */
+      case 321: /* filter_over ::= filter_clause */
 {
-  yylhsminor.yy455 = (Window*)sqlite3DbMallocZero(pParse->db, sizeof(Window));
-  if( yylhsminor.yy455 ){
-    yylhsminor.yy455->eFrmType = TK_FILTER;
-    yylhsminor.yy455->pFilter = yymsp[0].minor.yy46;
+  yylhsminor.yy303 = (Window*)sqlite3DbMallocZero(pParse->db, sizeof(Window));
+  if( yylhsminor.yy303 ){
+    yylhsminor.yy303->eFrmType = TK_FILTER;
+    yylhsminor.yy303->pFilter = yymsp[0].minor.yy202;
   }else{
-    sqlite3ExprDelete(pParse->db, yymsp[0].minor.yy46);
+    sqlite3ExprDelete(pParse->db, yymsp[0].minor.yy202);
   }
 }
-  yymsp[0].minor.yy455 = yylhsminor.yy455;
+  yymsp[0].minor.yy303 = yylhsminor.yy303;
         break;
-      case 320: /* over_clause ::= OVER LP window RP */
+      case 322: /* over_clause ::= OVER LP window RP */
 {
-  yymsp[-3].minor.yy455 = yymsp[-1].minor.yy455;
-  assert( yymsp[-3].minor.yy455!=0 );
+  yymsp[-3].minor.yy303 = yymsp[-1].minor.yy303;
+  assert( yymsp[-3].minor.yy303!=0 );
 }
         break;
-      case 321: /* over_clause ::= OVER nm */
+      case 323: /* over_clause ::= OVER nm */
 {
-  yymsp[-1].minor.yy455 = (Window*)sqlite3DbMallocZero(pParse->db, sizeof(Window));
-  if( yymsp[-1].minor.yy455 ){
-    yymsp[-1].minor.yy455->zName = sqlite3DbStrNDup(pParse->db, yymsp[0].minor.yy0.z, yymsp[0].minor.yy0.n);
+  yymsp[-1].minor.yy303 = (Window*)sqlite3DbMallocZero(pParse->db, sizeof(Window));
+  if( yymsp[-1].minor.yy303 ){
+    yymsp[-1].minor.yy303->zName = sqlite3DbStrNDup(pParse->db, yymsp[0].minor.yy0.z, yymsp[0].minor.yy0.n);
   }
 }
         break;
-      case 322: /* filter_clause ::= FILTER LP WHERE expr RP */
-{ yymsp[-4].minor.yy46 = yymsp[-1].minor.yy46; }
+      case 324: /* filter_clause ::= FILTER LP WHERE expr RP */
+{ yymsp[-4].minor.yy202 = yymsp[-1].minor.yy202; }
         break;
       default:
-      /* (323) input ::= cmdlist */ yytestcase(yyruleno==323);
-      /* (324) cmdlist ::= cmdlist ecmd */ yytestcase(yyruleno==324);
-      /* (325) cmdlist ::= ecmd (OPTIMIZED OUT) */ assert(yyruleno!=325);
-      /* (326) ecmd ::= SEMI */ yytestcase(yyruleno==326);
-      /* (327) ecmd ::= cmdx SEMI */ yytestcase(yyruleno==327);
-      /* (328) ecmd ::= explain cmdx */ yytestcase(yyruleno==328);
-      /* (329) trans_opt ::= */ yytestcase(yyruleno==329);
-      /* (330) trans_opt ::= TRANSACTION */ yytestcase(yyruleno==330);
-      /* (331) trans_opt ::= TRANSACTION nm */ yytestcase(yyruleno==331);
-      /* (332) savepoint_opt ::= SAVEPOINT */ yytestcase(yyruleno==332);
-      /* (333) savepoint_opt ::= */ yytestcase(yyruleno==333);
-      /* (334) cmd ::= create_table create_table_args */ yytestcase(yyruleno==334);
-      /* (335) columnlist ::= columnlist COMMA columnname carglist */ yytestcase(yyruleno==335);
-      /* (336) columnlist ::= columnname carglist */ yytestcase(yyruleno==336);
-      /* (337) nm ::= ID|INDEXED */ yytestcase(yyruleno==337);
-      /* (338) nm ::= STRING */ yytestcase(yyruleno==338);
-      /* (339) nm ::= JOIN_KW */ yytestcase(yyruleno==339);
-      /* (340) typetoken ::= typename */ yytestcase(yyruleno==340);
-      /* (341) typename ::= ID|STRING */ yytestcase(yyruleno==341);
-      /* (342) signed ::= plus_num (OPTIMIZED OUT) */ assert(yyruleno!=342);
-      /* (343) signed ::= minus_num (OPTIMIZED OUT) */ assert(yyruleno!=343);
-      /* (344) carglist ::= carglist ccons */ yytestcase(yyruleno==344);
-      /* (345) carglist ::= */ yytestcase(yyruleno==345);
-      /* (346) ccons ::= NULL onconf */ yytestcase(yyruleno==346);
-      /* (347) conslist_opt ::= COMMA conslist */ yytestcase(yyruleno==347);
-      /* (348) conslist ::= conslist tconscomma tcons */ yytestcase(yyruleno==348);
-      /* (349) conslist ::= tcons (OPTIMIZED OUT) */ assert(yyruleno!=349);
-      /* (350) tconscomma ::= */ yytestcase(yyruleno==350);
-      /* (351) defer_subclause_opt ::= defer_subclause (OPTIMIZED OUT) */ assert(yyruleno!=351);
-      /* (352) resolvetype ::= raisetype (OPTIMIZED OUT) */ assert(yyruleno!=352);
-      /* (353) selectnowith ::= oneselect (OPTIMIZED OUT) */ assert(yyruleno!=353);
-      /* (354) oneselect ::= values */ yytestcase(yyruleno==354);
-      /* (355) sclp ::= selcollist COMMA */ yytestcase(yyruleno==355);
-      /* (356) as ::= ID|STRING */ yytestcase(yyruleno==356);
-      /* (357) expr ::= term (OPTIMIZED OUT) */ assert(yyruleno!=357);
-      /* (358) likeop ::= LIKE_KW|MATCH */ yytestcase(yyruleno==358);
-      /* (359) exprlist ::= nexprlist */ yytestcase(yyruleno==359);
-      /* (360) nmnum ::= plus_num (OPTIMIZED OUT) */ assert(yyruleno!=360);
-      /* (361) nmnum ::= nm (OPTIMIZED OUT) */ assert(yyruleno!=361);
-      /* (362) nmnum ::= ON */ yytestcase(yyruleno==362);
-      /* (363) nmnum ::= DELETE */ yytestcase(yyruleno==363);
-      /* (364) nmnum ::= DEFAULT */ yytestcase(yyruleno==364);
-      /* (365) plus_num ::= INTEGER|FLOAT */ yytestcase(yyruleno==365);
-      /* (366) foreach_clause ::= */ yytestcase(yyruleno==366);
-      /* (367) foreach_clause ::= FOR EACH ROW */ yytestcase(yyruleno==367);
-      /* (368) trnm ::= nm */ yytestcase(yyruleno==368);
-      /* (369) tridxby ::= */ yytestcase(yyruleno==369);
-      /* (370) database_kw_opt ::= DATABASE */ yytestcase(yyruleno==370);
-      /* (371) database_kw_opt ::= */ yytestcase(yyruleno==371);
-      /* (372) kwcolumn_opt ::= */ yytestcase(yyruleno==372);
-      /* (373) kwcolumn_opt ::= COLUMNKW */ yytestcase(yyruleno==373);
-      /* (374) vtabarglist ::= vtabarg */ yytestcase(yyruleno==374);
-      /* (375) vtabarglist ::= vtabarglist COMMA vtabarg */ yytestcase(yyruleno==375);
-      /* (376) vtabarg ::= vtabarg vtabargtoken */ yytestcase(yyruleno==376);
-      /* (377) anylist ::= */ yytestcase(yyruleno==377);
-      /* (378) anylist ::= anylist LP anylist RP */ yytestcase(yyruleno==378);
-      /* (379) anylist ::= anylist ANY */ yytestcase(yyruleno==379);
-      /* (380) with ::= */ yytestcase(yyruleno==380);
+      /* (325) input ::= cmdlist */ yytestcase(yyruleno==325);
+      /* (326) cmdlist ::= cmdlist ecmd */ yytestcase(yyruleno==326);
+      /* (327) cmdlist ::= ecmd (OPTIMIZED OUT) */ assert(yyruleno!=327);
+      /* (328) ecmd ::= SEMI */ yytestcase(yyruleno==328);
+      /* (329) ecmd ::= cmdx SEMI */ yytestcase(yyruleno==329);
+      /* (330) ecmd ::= explain cmdx SEMI (NEVER REDUCES) */ assert(yyruleno!=330);
+      /* (331) trans_opt ::= */ yytestcase(yyruleno==331);
+      /* (332) trans_opt ::= TRANSACTION */ yytestcase(yyruleno==332);
+      /* (333) trans_opt ::= TRANSACTION nm */ yytestcase(yyruleno==333);
+      /* (334) savepoint_opt ::= SAVEPOINT */ yytestcase(yyruleno==334);
+      /* (335) savepoint_opt ::= */ yytestcase(yyruleno==335);
+      /* (336) cmd ::= create_table create_table_args */ yytestcase(yyruleno==336);
+      /* (337) columnlist ::= columnlist COMMA columnname carglist */ yytestcase(yyruleno==337);
+      /* (338) columnlist ::= columnname carglist */ yytestcase(yyruleno==338);
+      /* (339) nm ::= ID|INDEXED */ yytestcase(yyruleno==339);
+      /* (340) nm ::= STRING */ yytestcase(yyruleno==340);
+      /* (341) nm ::= JOIN_KW */ yytestcase(yyruleno==341);
+      /* (342) typetoken ::= typename */ yytestcase(yyruleno==342);
+      /* (343) typename ::= ID|STRING */ yytestcase(yyruleno==343);
+      /* (344) signed ::= plus_num (OPTIMIZED OUT) */ assert(yyruleno!=344);
+      /* (345) signed ::= minus_num (OPTIMIZED OUT) */ assert(yyruleno!=345);
+      /* (346) carglist ::= carglist ccons */ yytestcase(yyruleno==346);
+      /* (347) carglist ::= */ yytestcase(yyruleno==347);
+      /* (348) ccons ::= NULL onconf */ yytestcase(yyruleno==348);
+      /* (349) ccons ::= GENERATED ALWAYS AS generated */ yytestcase(yyruleno==349);
+      /* (350) ccons ::= AS generated */ yytestcase(yyruleno==350);
+      /* (351) conslist_opt ::= COMMA conslist */ yytestcase(yyruleno==351);
+      /* (352) conslist ::= conslist tconscomma tcons */ yytestcase(yyruleno==352);
+      /* (353) conslist ::= tcons (OPTIMIZED OUT) */ assert(yyruleno!=353);
+      /* (354) tconscomma ::= */ yytestcase(yyruleno==354);
+      /* (355) defer_subclause_opt ::= defer_subclause (OPTIMIZED OUT) */ assert(yyruleno!=355);
+      /* (356) resolvetype ::= raisetype (OPTIMIZED OUT) */ assert(yyruleno!=356);
+      /* (357) selectnowith ::= oneselect (OPTIMIZED OUT) */ assert(yyruleno!=357);
+      /* (358) oneselect ::= values */ yytestcase(yyruleno==358);
+      /* (359) sclp ::= selcollist COMMA */ yytestcase(yyruleno==359);
+      /* (360) as ::= ID|STRING */ yytestcase(yyruleno==360);
+      /* (361) expr ::= term (OPTIMIZED OUT) */ assert(yyruleno!=361);
+      /* (362) likeop ::= LIKE_KW|MATCH */ yytestcase(yyruleno==362);
+      /* (363) exprlist ::= nexprlist */ yytestcase(yyruleno==363);
+      /* (364) nmnum ::= plus_num (OPTIMIZED OUT) */ assert(yyruleno!=364);
+      /* (365) nmnum ::= nm (OPTIMIZED OUT) */ assert(yyruleno!=365);
+      /* (366) nmnum ::= ON */ yytestcase(yyruleno==366);
+      /* (367) nmnum ::= DELETE */ yytestcase(yyruleno==367);
+      /* (368) nmnum ::= DEFAULT */ yytestcase(yyruleno==368);
+      /* (369) plus_num ::= INTEGER|FLOAT */ yytestcase(yyruleno==369);
+      /* (370) foreach_clause ::= */ yytestcase(yyruleno==370);
+      /* (371) foreach_clause ::= FOR EACH ROW */ yytestcase(yyruleno==371);
+      /* (372) trnm ::= nm */ yytestcase(yyruleno==372);
+      /* (373) tridxby ::= */ yytestcase(yyruleno==373);
+      /* (374) database_kw_opt ::= DATABASE */ yytestcase(yyruleno==374);
+      /* (375) database_kw_opt ::= */ yytestcase(yyruleno==375);
+      /* (376) kwcolumn_opt ::= */ yytestcase(yyruleno==376);
+      /* (377) kwcolumn_opt ::= COLUMNKW */ yytestcase(yyruleno==377);
+      /* (378) vtabarglist ::= vtabarg */ yytestcase(yyruleno==378);
+      /* (379) vtabarglist ::= vtabarglist COMMA vtabarg */ yytestcase(yyruleno==379);
+      /* (380) vtabarg ::= vtabarg vtabargtoken */ yytestcase(yyruleno==380);
+      /* (381) anylist ::= */ yytestcase(yyruleno==381);
+      /* (382) anylist ::= anylist LP anylist RP */ yytestcase(yyruleno==382);
+      /* (383) anylist ::= anylist ANY */ yytestcase(yyruleno==383);
+      /* (384) with ::= */ yytestcase(yyruleno==384);
         break;
 /********** End reduce actions ************************************************/
   };
@@ -159141,8 +164133,8 @@ SQLITE_PRIVATE int sqlite3ParserFallback(int iToken){
   return yyFallback[iToken];
 #else
   (void)iToken;
-#endif
   return 0;
+#endif
 }
 
 /************** End of parse.c ***********************************************/
@@ -159307,20 +164299,20 @@ const unsigned char ebcdicToAscii[] = {
 ** is substantially reduced.  This is important for embedded applications
 ** on platforms with limited memory.
 */
-/* Hash score: 221 */
-/* zKWText[] encodes 967 bytes of keyword text in 638 bytes */
+/* Hash score: 227 */
+/* zKWText[] encodes 984 bytes of keyword text in 648 bytes */
 /*   REINDEXEDESCAPEACHECKEYBEFOREIGNOREGEXPLAINSTEADDATABASELECT       */
 /*   ABLEFTHENDEFERRABLELSEXCLUDELETEMPORARYISNULLSAVEPOINTERSECT       */
 /*   IESNOTNULLIKEXCEPTRANSACTIONATURALTERAISEXCLUSIVEXISTS             */
-/*   CONSTRAINTOFFSETRIGGEREFERENCESUNIQUERYWITHOUTERELEASEATTACH       */
-/*   AVINGLOBEGINNERANGEBETWEENOTHINGROUPSCASCADETACHCASECOLLATE        */
-/*   CREATECURRENT_DATEIMMEDIATEJOINSERTMATCHPLANALYZEPRAGMABORT        */
-/*   UPDATEVALUESVIRTUALASTWHENWHERECURSIVEAFTERENAMEANDEFAULT          */
-/*   AUTOINCREMENTCASTCOLUMNCOMMITCONFLICTCROSSCURRENT_TIMESTAMP        */
-/*   ARTITIONDEFERREDISTINCTDROPRECEDINGFAILIMITFILTEREPLACEFIRST       */
-/*   FOLLOWINGFROMFULLIFORDERESTRICTOTHERSOVERIGHTROLLBACKROWS          */
+/*   CONSTRAINTOFFSETRIGGERANGENERATEDETACHAVINGLOBEGINNEREFERENCES     */
+/*   UNIQUERYWITHOUTERELEASEATTACHBETWEENOTHINGROUPSCASCADEFAULT        */
+/*   CASECOLLATECREATECURRENT_DATEIMMEDIATEJOINSERTMATCHPLANALYZE       */
+/*   PRAGMABORTUPDATEVALUESVIRTUALWAYSWHENWHERECURSIVEAFTERENAMEAND     */
+/*   EFERREDISTINCTAUTOINCREMENTCASTCOLUMNCOMMITCONFLICTCROSS           */
+/*   CURRENT_TIMESTAMPARTITIONDROPRECEDINGFAILASTFILTEREPLACEFIRST      */
+/*   FOLLOWINGFROMFULLIMITIFORDERESTRICTOTHERSOVERIGHTROLLBACKROWS      */
 /*   UNBOUNDEDUNIONUSINGVACUUMVIEWINDOWBYINITIALLYPRIMARY               */
-static const char zKWText[637] = {
+static const char zKWText[647] = {
   'R','E','I','N','D','E','X','E','D','E','S','C','A','P','E','A','C','H',
   'E','C','K','E','Y','B','E','F','O','R','E','I','G','N','O','R','E','G',
   'E','X','P','L','A','I','N','S','T','E','A','D','D','A','T','A','B','A',
@@ -159331,93 +164323,96 @@ static const char zKWText[637] = {
   'N','U','L','L','I','K','E','X','C','E','P','T','R','A','N','S','A','C',
   'T','I','O','N','A','T','U','R','A','L','T','E','R','A','I','S','E','X',
   'C','L','U','S','I','V','E','X','I','S','T','S','C','O','N','S','T','R',
-  'A','I','N','T','O','F','F','S','E','T','R','I','G','G','E','R','E','F',
-  'E','R','E','N','C','E','S','U','N','I','Q','U','E','R','Y','W','I','T',
-  'H','O','U','T','E','R','E','L','E','A','S','E','A','T','T','A','C','H',
-  'A','V','I','N','G','L','O','B','E','G','I','N','N','E','R','A','N','G',
-  'E','B','E','T','W','E','E','N','O','T','H','I','N','G','R','O','U','P',
-  'S','C','A','S','C','A','D','E','T','A','C','H','C','A','S','E','C','O',
-  'L','L','A','T','E','C','R','E','A','T','E','C','U','R','R','E','N','T',
-  '_','D','A','T','E','I','M','M','E','D','I','A','T','E','J','O','I','N',
-  'S','E','R','T','M','A','T','C','H','P','L','A','N','A','L','Y','Z','E',
-  'P','R','A','G','M','A','B','O','R','T','U','P','D','A','T','E','V','A',
-  'L','U','E','S','V','I','R','T','U','A','L','A','S','T','W','H','E','N',
-  'W','H','E','R','E','C','U','R','S','I','V','E','A','F','T','E','R','E',
-  'N','A','M','E','A','N','D','E','F','A','U','L','T','A','U','T','O','I',
-  'N','C','R','E','M','E','N','T','C','A','S','T','C','O','L','U','M','N',
-  'C','O','M','M','I','T','C','O','N','F','L','I','C','T','C','R','O','S',
-  'S','C','U','R','R','E','N','T','_','T','I','M','E','S','T','A','M','P',
-  'A','R','T','I','T','I','O','N','D','E','F','E','R','R','E','D','I','S',
-  'T','I','N','C','T','D','R','O','P','R','E','C','E','D','I','N','G','F',
-  'A','I','L','I','M','I','T','F','I','L','T','E','R','E','P','L','A','C',
-  'E','F','I','R','S','T','F','O','L','L','O','W','I','N','G','F','R','O',
-  'M','F','U','L','L','I','F','O','R','D','E','R','E','S','T','R','I','C',
-  'T','O','T','H','E','R','S','O','V','E','R','I','G','H','T','R','O','L',
-  'L','B','A','C','K','R','O','W','S','U','N','B','O','U','N','D','E','D',
-  'U','N','I','O','N','U','S','I','N','G','V','A','C','U','U','M','V','I',
-  'E','W','I','N','D','O','W','B','Y','I','N','I','T','I','A','L','L','Y',
-  'P','R','I','M','A','R','Y',
+  'A','I','N','T','O','F','F','S','E','T','R','I','G','G','E','R','A','N',
+  'G','E','N','E','R','A','T','E','D','E','T','A','C','H','A','V','I','N',
+  'G','L','O','B','E','G','I','N','N','E','R','E','F','E','R','E','N','C',
+  'E','S','U','N','I','Q','U','E','R','Y','W','I','T','H','O','U','T','E',
+  'R','E','L','E','A','S','E','A','T','T','A','C','H','B','E','T','W','E',
+  'E','N','O','T','H','I','N','G','R','O','U','P','S','C','A','S','C','A',
+  'D','E','F','A','U','L','T','C','A','S','E','C','O','L','L','A','T','E',
+  'C','R','E','A','T','E','C','U','R','R','E','N','T','_','D','A','T','E',
+  'I','M','M','E','D','I','A','T','E','J','O','I','N','S','E','R','T','M',
+  'A','T','C','H','P','L','A','N','A','L','Y','Z','E','P','R','A','G','M',
+  'A','B','O','R','T','U','P','D','A','T','E','V','A','L','U','E','S','V',
+  'I','R','T','U','A','L','W','A','Y','S','W','H','E','N','W','H','E','R',
+  'E','C','U','R','S','I','V','E','A','F','T','E','R','E','N','A','M','E',
+  'A','N','D','E','F','E','R','R','E','D','I','S','T','I','N','C','T','A',
+  'U','T','O','I','N','C','R','E','M','E','N','T','C','A','S','T','C','O',
+  'L','U','M','N','C','O','M','M','I','T','C','O','N','F','L','I','C','T',
+  'C','R','O','S','S','C','U','R','R','E','N','T','_','T','I','M','E','S',
+  'T','A','M','P','A','R','T','I','T','I','O','N','D','R','O','P','R','E',
+  'C','E','D','I','N','G','F','A','I','L','A','S','T','F','I','L','T','E',
+  'R','E','P','L','A','C','E','F','I','R','S','T','F','O','L','L','O','W',
+  'I','N','G','F','R','O','M','F','U','L','L','I','M','I','T','I','F','O',
+  'R','D','E','R','E','S','T','R','I','C','T','O','T','H','E','R','S','O',
+  'V','E','R','I','G','H','T','R','O','L','L','B','A','C','K','R','O','W',
+  'S','U','N','B','O','U','N','D','E','D','U','N','I','O','N','U','S','I',
+  'N','G','V','A','C','U','U','M','V','I','E','W','I','N','D','O','W','B',
+  'Y','I','N','I','T','I','A','L','L','Y','P','R','I','M','A','R','Y',
 };
 /* aKWHash[i] is the hash value for the i-th keyword */
 static const unsigned char aKWHash[127] = {
-    82, 113, 130,  80, 110,  29,   0,   0,  89,   0,  83,  70,   0,
-    53,  35,  84,  15,   0, 129,  92,  64, 124, 131,  19,   0,   0,
-   136,   0, 134, 126,   0,  22, 100,   0,   9,   0,   0, 121,  78,
-     0,  76,   6,   0,  58,  97, 143,   0, 132, 108,   0,   0,  48,
-     0, 111,  24,   0,  17,   0, 137,  63,  23,  26,   5,  65, 138,
-   103, 120,   0, 142, 114,  69, 141,  66, 118,  72,   0,  98,   0,
-   107,  41,   0, 106,   0,   0,   0, 102,  99, 104, 109, 123,  14,
-    50, 122,   0,  87,   0, 139, 119, 140,  68, 127, 135,  86,  81,
-    37,  91, 117,   0,   0, 101,  51, 128, 125,   0, 133,   0,   0,
-    44,   0,  93,  67,  39,   0,  20,  45, 115,  88,
+    84, 102, 132,  82, 114,  29,   0,   0,  91,   0,  85,  72,   0,
+    53,  35,  86,  15,   0,  42,  94,  54, 126, 133,  19,   0,   0,
+   138,   0,  40, 128,   0,  22, 104,   0,   9,   0,   0, 122,  80,
+     0,  78,   6,   0,  65,  99, 145,   0, 134, 112,   0,   0,  48,
+     0, 100,  24,   0,  17,   0,  27,  70,  23,  26,   5,  60, 140,
+   107, 121,   0,  73, 101,  71, 143,  61, 119,  74,   0,  49,   0,
+    11,  41,   0, 110,   0,   0,   0, 106,  10, 108, 113, 124,  14,
+    50, 123,   0,  89,   0,  18, 120, 142,  56, 129, 137,  88,  83,
+    37,  30, 125,   0,   0, 105,  51, 130, 127,   0,  34,   0,   0,
+    44,   0,  95,  38,  39,   0,  20,  45, 116,  90,
 };
 /* aKWNext[] forms the hash collision chain.  If aKWHash[i]==0
 ** then the i-th keyword has no more hash collisions.  Otherwise,
 ** the next keyword with the same hash is aKWHash[i]-1. */
-static const unsigned char aKWNext[143] = {
-     0,   0,   0,   0,   4,   0,   0,   0,   0,   0,   0,   0,   0,
-     0,   2,   0,   0,   0,   0,   0,   0,  13,   0,   0,   0,   0,
-     0,   0,   0,  21,   0,   0,   0,   0,  12,   0,   0,   0,   0,
-     0,   0,   0,   7,   0,  36,   0,   0,  28,   0,   0,   0,  31,
-     0,   0,   0,  40,   0,   0,   0,   0,   0,  60,   0,  54,   0,
-     0,  38,  47,   0,   0,   0,   3,   0,   0,  74,   1,  73,   0,
-     0,   0,  52,   0,   0,   0,   0,   0,   0,  57,  59,  56,  30,
-     0,   0,   0,  46,   0,  16,  49,  10,   0,   0,   0,   0,   0,
-     0,   0,  11,  79,  95,   0,   0,   8,   0, 112,   0, 105,   0,
-    43,  62,   0,  77,   0, 116,   0,  61,   0,   0,  94,  42,  55,
-     0,  75,  34,  90,  32,  33,  27,  25,  18,  96,   0,  71,  85,
+static const unsigned char aKWNext[145] = {
+     0,   0,   0,   0,   4,   0,  43,   0,   0, 103, 111,   0,   0,
+     0,   2,   0,   0, 141,   0,   0,   0,  13,   0,   0,   0,   0,
+   139,   0,   0, 118,  52,   0,   0, 135,  12,   0,   0,  62,   0,
+   136,   0, 131,   0,   0,  36,   0,   0,  28,  77,   0,   0,   0,
+     0,  59,   0,  47,   0,   0,   0,   0,   0,   0,   0,   0,   0,
+     0,  69,   0,   0,   0,   0,   0, 144,   3,   0,  58,   0,   1,
+    75,   0,   0,   0,  31,   0,   0,   0,   0,   0,   0,  64,  66,
+    63,   0,   0,   0,   0,  46,   0,  16,   0, 115,   0,   0,   0,
+     0,   0,   0,   0,   0,   0,   0,  81,  97,   0,   8,   0, 109,
+    21,   7,  67,   0,  79,  93, 117,   0,   0,  68,   0,   0,  96,
+     0,  55,   0,  76,   0,  92,  32,  33,  57,  25,   0,  98,   0,
+     0,  87,
 };
 /* aKWLen[i] is the length (in bytes) of the i-th keyword */
-static const unsigned char aKWLen[143] = {
+static const unsigned char aKWLen[145] = {
      7,   7,   5,   4,   6,   4,   5,   3,   6,   7,   3,   6,   6,
      7,   7,   3,   8,   2,   6,   5,   4,   4,   3,  10,   4,   7,
      6,   9,   4,   2,   6,   5,   9,   9,   4,   7,   3,   2,   4,
      4,   6,  11,   6,   2,   7,   5,   5,   9,   6,  10,   4,   6,
-     2,   3,   7,  10,   6,   5,   7,   4,   5,   7,   6,   6,   4,
-     5,   5,   5,   7,   7,   6,   5,   7,   3,   6,   4,   7,   6,
-    12,   9,   4,   6,   5,   4,   7,   6,   5,   6,   6,   7,   4,
-     4,   5,   9,   5,   6,   3,   7,  13,   2,   2,   4,   6,   6,
-     8,   5,  17,  12,   7,   9,   8,   8,   2,   4,   9,   4,   5,
-     6,   7,   5,   9,   4,   4,   2,   5,   8,   6,   4,   5,   8,
-     4,   3,   9,   5,   5,   6,   4,   6,   2,   2,   9,   3,   7,
+     2,   3,   7,   5,   9,   6,   6,   4,   5,   5,  10,   6,   5,
+     7,   4,   5,   7,   6,   7,   7,   6,   5,   7,   3,   7,   4,
+     7,   6,  12,   9,   4,   6,   5,   4,   7,   6,   5,   6,   6,
+     7,   6,   4,   5,   9,   5,   6,   3,   8,   8,   2,  13,   2,
+     2,   4,   6,   6,   8,   5,  17,  12,   7,   9,   4,   9,   4,
+     4,   6,   7,   5,   9,   4,   4,   5,   2,   5,   8,   6,   4,
+     5,   8,   4,   3,   9,   5,   5,   6,   4,   6,   2,   2,   9,
+     3,   7,
 };
 /* aKWOffset[i] is the index into zKWText[] of the start of
 ** the text for the i-th keyword. */
-static const unsigned short int aKWOffset[143] = {
+static const unsigned short int aKWOffset[145] = {
      0,   2,   2,   8,   9,  14,  16,  20,  23,  25,  25,  29,  33,
     36,  41,  46,  48,  53,  54,  59,  62,  65,  67,  69,  78,  81,
     86,  90,  90,  94,  99, 101, 105, 111, 119, 123, 123, 123, 126,
    129, 132, 137, 142, 146, 147, 152, 156, 160, 168, 174, 181, 184,
-   184, 187, 189, 195, 205, 208, 213, 213, 217, 221, 228, 233, 238,
-   241, 244, 248, 253, 259, 265, 265, 271, 272, 276, 282, 286, 293,
-   299, 311, 320, 322, 328, 333, 335, 342, 347, 352, 358, 364, 370,
-   374, 378, 381, 390, 394, 400, 402, 409, 411, 413, 422, 426, 432,
-   438, 446, 451, 451, 451, 467, 476, 483, 484, 491, 494, 503, 506,
-   511, 516, 523, 528, 537, 541, 545, 547, 551, 559, 565, 568, 573,
-   581, 581, 585, 594, 599, 604, 610, 613, 616, 619, 621, 626, 630,
+   184, 187, 189, 195, 198, 206, 211, 216, 219, 222, 226, 236, 239,
+   244, 244, 248, 252, 259, 265, 271, 277, 277, 283, 284, 288, 295,
+   299, 306, 312, 324, 333, 335, 341, 346, 348, 355, 360, 365, 371,
+   377, 382, 388, 392, 395, 404, 408, 414, 416, 423, 424, 431, 433,
+   435, 444, 448, 454, 460, 468, 473, 473, 473, 489, 498, 501, 510,
+   513, 517, 522, 529, 534, 543, 547, 550, 555, 557, 561, 569, 575,
+   578, 583, 591, 591, 595, 604, 609, 614, 620, 623, 626, 629, 631,
+   636, 640,
 };
 /* aKWCode[i] is the parser symbol code for the i-th keyword */
-static const unsigned char aKWCode[143] = {
+static const unsigned char aKWCode[145] = {
   TK_REINDEX,    TK_INDEXED,    TK_INDEX,      TK_DESC,       TK_ESCAPE,
   TK_EACH,       TK_CHECK,      TK_KEY,        TK_BEFORE,     TK_FOREIGN,
   TK_FOR,        TK_IGNORE,     TK_LIKE_KW,    TK_EXPLAIN,    TK_INSTEAD,
@@ -159429,25 +164424,154 @@ static const unsigned char aKWCode[143] = {
   TK_EXCEPT,     TK_TRANSACTION,TK_ACTION,     TK_ON,         TK_JOIN_KW,
   TK_ALTER,      TK_RAISE,      TK_EXCLUSIVE,  TK_EXISTS,     TK_CONSTRAINT,
   TK_INTO,       TK_OFFSET,     TK_OF,         TK_SET,        TK_TRIGGER,
-  TK_REFERENCES, TK_UNIQUE,     TK_QUERY,      TK_WITHOUT,    TK_WITH,
-  TK_JOIN_KW,    TK_RELEASE,    TK_ATTACH,     TK_HAVING,     TK_LIKE_KW,
-  TK_BEGIN,      TK_JOIN_KW,    TK_RANGE,      TK_BETWEEN,    TK_NOTHING,
-  TK_GROUPS,     TK_GROUP,      TK_CASCADE,    TK_ASC,        TK_DETACH,
-  TK_CASE,       TK_COLLATE,    TK_CREATE,     TK_CTIME_KW,   TK_IMMEDIATE,
-  TK_JOIN,       TK_INSERT,     TK_MATCH,      TK_PLAN,       TK_ANALYZE,
-  TK_PRAGMA,     TK_ABORT,      TK_UPDATE,     TK_VALUES,     TK_VIRTUAL,
-  TK_LAST,       TK_WHEN,       TK_WHERE,      TK_RECURSIVE,  TK_AFTER,
-  TK_RENAME,     TK_AND,        TK_DEFAULT,    TK_AUTOINCR,   TK_TO,
-  TK_IN,         TK_CAST,       TK_COLUMNKW,   TK_COMMIT,     TK_CONFLICT,
-  TK_JOIN_KW,    TK_CTIME_KW,   TK_CTIME_KW,   TK_CURRENT,    TK_PARTITION,
-  TK_DEFERRED,   TK_DISTINCT,   TK_IS,         TK_DROP,       TK_PRECEDING,
-  TK_FAIL,       TK_LIMIT,      TK_FILTER,     TK_REPLACE,    TK_FIRST,
-  TK_FOLLOWING,  TK_FROM,       TK_JOIN_KW,    TK_IF,         TK_ORDER,
-  TK_RESTRICT,   TK_OTHERS,     TK_OVER,       TK_JOIN_KW,    TK_ROLLBACK,
-  TK_ROWS,       TK_ROW,        TK_UNBOUNDED,  TK_UNION,      TK_USING,
-  TK_VACUUM,     TK_VIEW,       TK_WINDOW,     TK_DO,         TK_BY,
-  TK_INITIALLY,  TK_ALL,        TK_PRIMARY,
+  TK_RANGE,      TK_GENERATED,  TK_DETACH,     TK_HAVING,     TK_LIKE_KW,
+  TK_BEGIN,      TK_JOIN_KW,    TK_REFERENCES, TK_UNIQUE,     TK_QUERY,
+  TK_WITHOUT,    TK_WITH,       TK_JOIN_KW,    TK_RELEASE,    TK_ATTACH,
+  TK_BETWEEN,    TK_NOTHING,    TK_GROUPS,     TK_GROUP,      TK_CASCADE,
+  TK_ASC,        TK_DEFAULT,    TK_CASE,       TK_COLLATE,    TK_CREATE,
+  TK_CTIME_KW,   TK_IMMEDIATE,  TK_JOIN,       TK_INSERT,     TK_MATCH,
+  TK_PLAN,       TK_ANALYZE,    TK_PRAGMA,     TK_ABORT,      TK_UPDATE,
+  TK_VALUES,     TK_VIRTUAL,    TK_ALWAYS,     TK_WHEN,       TK_WHERE,
+  TK_RECURSIVE,  TK_AFTER,      TK_RENAME,     TK_AND,        TK_DEFERRED,
+  TK_DISTINCT,   TK_IS,         TK_AUTOINCR,   TK_TO,         TK_IN,
+  TK_CAST,       TK_COLUMNKW,   TK_COMMIT,     TK_CONFLICT,   TK_JOIN_KW,
+  TK_CTIME_KW,   TK_CTIME_KW,   TK_CURRENT,    TK_PARTITION,  TK_DROP,
+  TK_PRECEDING,  TK_FAIL,       TK_LAST,       TK_FILTER,     TK_REPLACE,
+  TK_FIRST,      TK_FOLLOWING,  TK_FROM,       TK_JOIN_KW,    TK_LIMIT,
+  TK_IF,         TK_ORDER,      TK_RESTRICT,   TK_OTHERS,     TK_OVER,
+  TK_JOIN_KW,    TK_ROLLBACK,   TK_ROWS,       TK_ROW,        TK_UNBOUNDED,
+  TK_UNION,      TK_USING,      TK_VACUUM,     TK_VIEW,       TK_WINDOW,
+  TK_DO,         TK_BY,         TK_INITIALLY,  TK_ALL,        TK_PRIMARY,
 };
+/* Hash table decoded:
+**   0: INSERT
+**   1: IS
+**   2: ROLLBACK TRIGGER
+**   3: IMMEDIATE
+**   4: PARTITION
+**   5: TEMP
+**   6:
+**   7:
+**   8: VALUES WITHOUT
+**   9:
+**  10: MATCH
+**  11: NOTHING
+**  12:
+**  13: OF
+**  14: TIES IGNORE
+**  15: PLAN
+**  16: INSTEAD INDEXED
+**  17:
+**  18: TRANSACTION RIGHT
+**  19: WHEN
+**  20: SET HAVING
+**  21: IF
+**  22: ROWS
+**  23: SELECT
+**  24:
+**  25:
+**  26: VACUUM SAVEPOINT
+**  27:
+**  28: LIKE UNION VIRTUAL REFERENCES
+**  29: RESTRICT
+**  30:
+**  31: THEN REGEXP
+**  32: TO
+**  33:
+**  34: BEFORE
+**  35:
+**  36:
+**  37: FOLLOWING COLLATE CASCADE
+**  38: CREATE
+**  39:
+**  40: CASE REINDEX
+**  41: EACH
+**  42:
+**  43: QUERY
+**  44: AND ADD
+**  45: PRIMARY ANALYZE
+**  46:
+**  47: ROW ASC DETACH
+**  48: CURRENT_TIME CURRENT_DATE
+**  49:
+**  50:
+**  51: EXCLUSIVE TEMPORARY
+**  52:
+**  53: DEFERRED
+**  54: DEFERRABLE
+**  55:
+**  56: DATABASE
+**  57:
+**  58: DELETE VIEW GENERATED
+**  59: ATTACH
+**  60: END
+**  61: EXCLUDE
+**  62: ESCAPE DESC
+**  63: GLOB
+**  64: WINDOW ELSE
+**  65: COLUMN
+**  66: FIRST
+**  67:
+**  68: GROUPS ALL
+**  69: DISTINCT DROP KEY
+**  70: BETWEEN
+**  71: INITIALLY
+**  72: BEGIN
+**  73: FILTER CHECK ACTION
+**  74: GROUP INDEX
+**  75:
+**  76: EXISTS DEFAULT
+**  77:
+**  78: FOR CURRENT_TIMESTAMP
+**  79: EXCEPT
+**  80:
+**  81: CROSS
+**  82:
+**  83:
+**  84:
+**  85: CAST
+**  86: FOREIGN AUTOINCREMENT
+**  87: COMMIT
+**  88: CURRENT AFTER ALTER
+**  89: FULL FAIL CONFLICT
+**  90: EXPLAIN
+**  91: CONSTRAINT
+**  92: FROM ALWAYS
+**  93:
+**  94: ABORT
+**  95:
+**  96: AS DO
+**  97: REPLACE WITH RELEASE
+**  98: BY RENAME
+**  99: RANGE RAISE
+** 100: OTHERS
+** 101: USING NULLS
+** 102: PRAGMA
+** 103: JOIN ISNULL OFFSET
+** 104: NOT
+** 105: OR LAST LEFT
+** 106: LIMIT
+** 107:
+** 108:
+** 109: IN
+** 110: INTO
+** 111: OVER RECURSIVE
+** 112: ORDER OUTER
+** 113:
+** 114: INTERSECT UNBOUNDED
+** 115:
+** 116:
+** 117: ON
+** 118:
+** 119: WHERE
+** 120: NO INNER
+** 121: NULL
+** 122:
+** 123: TABLE
+** 124: NATURAL NOTNULL
+** 125: PRECEDING
+** 126: UPDATE UNIQUE
+*/
 /* Check to see if z[0..n-1] is a keyword. If it is, write the
 ** parser symbol code for that keyword into *pType.  Always
 ** return the integer n (the length of the token). */
@@ -159458,12 +164582,17 @@ static int keywordCode(const char *z, int n, int *pType){
     i = ((charMap(z[0])*4) ^ (charMap(z[n-1])*3) ^ n) % 127;
     for(i=((int)aKWHash[i])-1; i>=0; i=((int)aKWNext[i])-1){
       if( aKWLen[i]!=n ) continue;
-      j = 0;
       zKW = &zKWText[aKWOffset[i]];
 #ifdef SQLITE_ASCII
+      if( (z[0]&~0x20)!=zKW[0] ) continue;
+      if( (z[1]&~0x20)!=zKW[1] ) continue;
+      j = 2;
       while( j<n && (z[j]&~0x20)==zKW[j] ){ j++; }
 #endif
 #ifdef SQLITE_EBCDIC
+      if( toupper(z[0])!=zKW[0] ) continue;
+      if( toupper(z[1])!=zKW[1] ) continue;
+      j = 2;
       while( j<n && toupper(z[j])==zKW[j] ){ j++; }
 #endif
       if( j<n ) continue;
@@ -159522,94 +164651,96 @@ static int keywordCode(const char *z, int n, int *pType){
       testcase( i==52 ); /* OF */
       testcase( i==53 ); /* SET */
       testcase( i==54 ); /* TRIGGER */
-      testcase( i==55 ); /* REFERENCES */
-      testcase( i==56 ); /* UNIQUE */
-      testcase( i==57 ); /* QUERY */
-      testcase( i==58 ); /* WITHOUT */
-      testcase( i==59 ); /* WITH */
-      testcase( i==60 ); /* OUTER */
-      testcase( i==61 ); /* RELEASE */
-      testcase( i==62 ); /* ATTACH */
-      testcase( i==63 ); /* HAVING */
-      testcase( i==64 ); /* GLOB */
-      testcase( i==65 ); /* BEGIN */
-      testcase( i==66 ); /* INNER */
-      testcase( i==67 ); /* RANGE */
-      testcase( i==68 ); /* BETWEEN */
-      testcase( i==69 ); /* NOTHING */
-      testcase( i==70 ); /* GROUPS */
-      testcase( i==71 ); /* GROUP */
-      testcase( i==72 ); /* CASCADE */
-      testcase( i==73 ); /* ASC */
-      testcase( i==74 ); /* DETACH */
-      testcase( i==75 ); /* CASE */
-      testcase( i==76 ); /* COLLATE */
-      testcase( i==77 ); /* CREATE */
-      testcase( i==78 ); /* CURRENT_DATE */
-      testcase( i==79 ); /* IMMEDIATE */
-      testcase( i==80 ); /* JOIN */
-      testcase( i==81 ); /* INSERT */
-      testcase( i==82 ); /* MATCH */
-      testcase( i==83 ); /* PLAN */
-      testcase( i==84 ); /* ANALYZE */
-      testcase( i==85 ); /* PRAGMA */
-      testcase( i==86 ); /* ABORT */
-      testcase( i==87 ); /* UPDATE */
-      testcase( i==88 ); /* VALUES */
-      testcase( i==89 ); /* VIRTUAL */
-      testcase( i==90 ); /* LAST */
-      testcase( i==91 ); /* WHEN */
-      testcase( i==92 ); /* WHERE */
-      testcase( i==93 ); /* RECURSIVE */
-      testcase( i==94 ); /* AFTER */
-      testcase( i==95 ); /* RENAME */
-      testcase( i==96 ); /* AND */
-      testcase( i==97 ); /* DEFAULT */
-      testcase( i==98 ); /* AUTOINCREMENT */
-      testcase( i==99 ); /* TO */
-      testcase( i==100 ); /* IN */
-      testcase( i==101 ); /* CAST */
-      testcase( i==102 ); /* COLUMN */
-      testcase( i==103 ); /* COMMIT */
-      testcase( i==104 ); /* CONFLICT */
-      testcase( i==105 ); /* CROSS */
-      testcase( i==106 ); /* CURRENT_TIMESTAMP */
-      testcase( i==107 ); /* CURRENT_TIME */
-      testcase( i==108 ); /* CURRENT */
-      testcase( i==109 ); /* PARTITION */
-      testcase( i==110 ); /* DEFERRED */
-      testcase( i==111 ); /* DISTINCT */
-      testcase( i==112 ); /* IS */
-      testcase( i==113 ); /* DROP */
-      testcase( i==114 ); /* PRECEDING */
-      testcase( i==115 ); /* FAIL */
-      testcase( i==116 ); /* LIMIT */
-      testcase( i==117 ); /* FILTER */
-      testcase( i==118 ); /* REPLACE */
-      testcase( i==119 ); /* FIRST */
-      testcase( i==120 ); /* FOLLOWING */
-      testcase( i==121 ); /* FROM */
-      testcase( i==122 ); /* FULL */
-      testcase( i==123 ); /* IF */
-      testcase( i==124 ); /* ORDER */
-      testcase( i==125 ); /* RESTRICT */
-      testcase( i==126 ); /* OTHERS */
-      testcase( i==127 ); /* OVER */
-      testcase( i==128 ); /* RIGHT */
-      testcase( i==129 ); /* ROLLBACK */
-      testcase( i==130 ); /* ROWS */
-      testcase( i==131 ); /* ROW */
-      testcase( i==132 ); /* UNBOUNDED */
-      testcase( i==133 ); /* UNION */
-      testcase( i==134 ); /* USING */
-      testcase( i==135 ); /* VACUUM */
-      testcase( i==136 ); /* VIEW */
-      testcase( i==137 ); /* WINDOW */
-      testcase( i==138 ); /* DO */
-      testcase( i==139 ); /* BY */
-      testcase( i==140 ); /* INITIALLY */
-      testcase( i==141 ); /* ALL */
-      testcase( i==142 ); /* PRIMARY */
+      testcase( i==55 ); /* RANGE */
+      testcase( i==56 ); /* GENERATED */
+      testcase( i==57 ); /* DETACH */
+      testcase( i==58 ); /* HAVING */
+      testcase( i==59 ); /* GLOB */
+      testcase( i==60 ); /* BEGIN */
+      testcase( i==61 ); /* INNER */
+      testcase( i==62 ); /* REFERENCES */
+      testcase( i==63 ); /* UNIQUE */
+      testcase( i==64 ); /* QUERY */
+      testcase( i==65 ); /* WITHOUT */
+      testcase( i==66 ); /* WITH */
+      testcase( i==67 ); /* OUTER */
+      testcase( i==68 ); /* RELEASE */
+      testcase( i==69 ); /* ATTACH */
+      testcase( i==70 ); /* BETWEEN */
+      testcase( i==71 ); /* NOTHING */
+      testcase( i==72 ); /* GROUPS */
+      testcase( i==73 ); /* GROUP */
+      testcase( i==74 ); /* CASCADE */
+      testcase( i==75 ); /* ASC */
+      testcase( i==76 ); /* DEFAULT */
+      testcase( i==77 ); /* CASE */
+      testcase( i==78 ); /* COLLATE */
+      testcase( i==79 ); /* CREATE */
+      testcase( i==80 ); /* CURRENT_DATE */
+      testcase( i==81 ); /* IMMEDIATE */
+      testcase( i==82 ); /* JOIN */
+      testcase( i==83 ); /* INSERT */
+      testcase( i==84 ); /* MATCH */
+      testcase( i==85 ); /* PLAN */
+      testcase( i==86 ); /* ANALYZE */
+      testcase( i==87 ); /* PRAGMA */
+      testcase( i==88 ); /* ABORT */
+      testcase( i==89 ); /* UPDATE */
+      testcase( i==90 ); /* VALUES */
+      testcase( i==91 ); /* VIRTUAL */
+      testcase( i==92 ); /* ALWAYS */
+      testcase( i==93 ); /* WHEN */
+      testcase( i==94 ); /* WHERE */
+      testcase( i==95 ); /* RECURSIVE */
+      testcase( i==96 ); /* AFTER */
+      testcase( i==97 ); /* RENAME */
+      testcase( i==98 ); /* AND */
+      testcase( i==99 ); /* DEFERRED */
+      testcase( i==100 ); /* DISTINCT */
+      testcase( i==101 ); /* IS */
+      testcase( i==102 ); /* AUTOINCREMENT */
+      testcase( i==103 ); /* TO */
+      testcase( i==104 ); /* IN */
+      testcase( i==105 ); /* CAST */
+      testcase( i==106 ); /* COLUMN */
+      testcase( i==107 ); /* COMMIT */
+      testcase( i==108 ); /* CONFLICT */
+      testcase( i==109 ); /* CROSS */
+      testcase( i==110 ); /* CURRENT_TIMESTAMP */
+      testcase( i==111 ); /* CURRENT_TIME */
+      testcase( i==112 ); /* CURRENT */
+      testcase( i==113 ); /* PARTITION */
+      testcase( i==114 ); /* DROP */
+      testcase( i==115 ); /* PRECEDING */
+      testcase( i==116 ); /* FAIL */
+      testcase( i==117 ); /* LAST */
+      testcase( i==118 ); /* FILTER */
+      testcase( i==119 ); /* REPLACE */
+      testcase( i==120 ); /* FIRST */
+      testcase( i==121 ); /* FOLLOWING */
+      testcase( i==122 ); /* FROM */
+      testcase( i==123 ); /* FULL */
+      testcase( i==124 ); /* LIMIT */
+      testcase( i==125 ); /* IF */
+      testcase( i==126 ); /* ORDER */
+      testcase( i==127 ); /* RESTRICT */
+      testcase( i==128 ); /* OTHERS */
+      testcase( i==129 ); /* OVER */
+      testcase( i==130 ); /* RIGHT */
+      testcase( i==131 ); /* ROLLBACK */
+      testcase( i==132 ); /* ROWS */
+      testcase( i==133 ); /* ROW */
+      testcase( i==134 ); /* UNBOUNDED */
+      testcase( i==135 ); /* UNION */
+      testcase( i==136 ); /* USING */
+      testcase( i==137 ); /* VACUUM */
+      testcase( i==138 ); /* VIEW */
+      testcase( i==139 ); /* WINDOW */
+      testcase( i==140 ); /* DO */
+      testcase( i==141 ); /* BY */
+      testcase( i==142 ); /* INITIALLY */
+      testcase( i==143 ); /* ALL */
+      testcase( i==144 ); /* PRIMARY */
       *pType = aKWCode[i];
       break;
     }
@@ -159621,7 +164752,7 @@ SQLITE_PRIVATE int sqlite3KeywordCode(const unsigned char *z, int n){
   keywordCode((char*)z, n, &id);
   return id;
 }
-#define SQLITE_N_KEYWORD 143
+#define SQLITE_N_KEYWORD 145
 SQLITE_API int sqlite3_keyword_name(int i,const char **pzName,int *pnName){
   if( i<0 || i>=SQLITE_N_KEYWORD ) return SQLITE_ERROR;
   *pzName = zKWText + aKWOffset[i];
@@ -159913,6 +165044,7 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){
       }
       /* If the next character is a digit, this is a floating point
       ** number that begins with ".".  Fall thru into the next case */
+      /* no break */ deliberate_fall_through
     }
     case CC_DIGIT: {
       testcase( z[0]=='0' );  testcase( z[0]=='1' );  testcase( z[0]=='2' );
@@ -160017,6 +165149,7 @@ SQLITE_PRIVATE int sqlite3GetToken(const unsigned char *z, int *tokenType){
 #endif
       /* If it is not a BLOB literal, then it must be an ID, since no
       ** SQL keywords start with the letter 'x'.  Fall through */
+      /* no break */ deliberate_fall_through
     }
     case CC_ID: {
       i = 1;
@@ -160059,7 +165192,7 @@ SQLITE_PRIVATE int sqlite3RunParser(Parse *pParse, const char *zSql, char **pzEr
   assert( zSql!=0 );
   mxSqlLen = db->aLimit[SQLITE_LIMIT_SQL_LENGTH];
   if( db->nVdbeActive==0 ){
-    db->u1.isInterrupted = 0;
+    AtomicStore(&db->u1.isInterrupted, 0);
   }
   pParse->rc = SQLITE_OK;
   pParse->zTail = zSql;
@@ -160104,7 +165237,7 @@ SQLITE_PRIVATE int sqlite3RunParser(Parse *pParse, const char *zSql, char **pzEr
     if( tokenType>=TK_SPACE ){
       assert( tokenType==TK_SPACE || tokenType==TK_ILLEGAL );
 #endif /* SQLITE_OMIT_WINDOWFUNC */
-      if( db->u1.isInterrupted ){
+      if( AtomicLoad(&db->u1.isInterrupted) ){
         pParse->rc = SQLITE_INTERRUPT;
         break;
       }
@@ -160248,7 +165381,7 @@ SQLITE_PRIVATE char *sqlite3Normalize(
   int nParen;        /* Number of nested levels of parentheses */
   int iStartIN;      /* Start of RHS of IN operator in z[] */
   int nParenAtIN;    /* Value of nParent at start of RHS of IN operator */
-  int j;             /* Bytes of normalized SQL generated so far */
+  u32 j;             /* Bytes of normalized SQL generated so far */
   sqlite3_str *pStr; /* The normalized SQL string under construction */
 
   db = sqlite3VdbeDb(pVdbe);
@@ -160292,7 +165425,7 @@ SQLITE_PRIVATE char *sqlite3Normalize(
       }
       case TK_RP: {
         if( iStartIN>0 && nParen==nParenAtIN ){
-          assert( pStr->nChar>=iStartIN );
+          assert( pStr->nChar>=(u32)iStartIN );
           pStr->nChar = iStartIN+1;
           sqlite3_str_append(pStr, "?,?,?", 5);
           iStartIN = 0;
@@ -160767,19 +165900,81 @@ SQLITE_PRIVATE int sqlite3IcuInit(sqlite3 *db);
 }  /* extern "C" */
 #endif  /* __cplusplus */
 
-
 /************** End of sqliteicu.h *******************************************/
 /************** Continuing where we left off in main.c ***********************/
 #endif
+
+/*
+** This is an extension initializer that is a no-op and always
+** succeeds, except that it fails if the fault-simulation is set
+** to 500.
+*/
+static int sqlite3TestExtInit(sqlite3 *db){
+  (void)db;
+  return sqlite3FaultSim(500);
+}
+
+
+/*
+** Forward declarations of external module initializer functions
+** for modules that need them.
+*/
+#ifdef SQLITE_ENABLE_FTS1
+SQLITE_PRIVATE int sqlite3Fts1Init(sqlite3*);
+#endif
+#ifdef SQLITE_ENABLE_FTS2
+SQLITE_PRIVATE int sqlite3Fts2Init(sqlite3*);
+#endif
+#ifdef SQLITE_ENABLE_FTS5
+SQLITE_PRIVATE int sqlite3Fts5Init(sqlite3*);
+#endif
 #ifdef SQLITE_ENABLE_JSON1
 SQLITE_PRIVATE int sqlite3Json1Init(sqlite3*);
 #endif
 #ifdef SQLITE_ENABLE_STMTVTAB
 SQLITE_PRIVATE int sqlite3StmtVtabInit(sqlite3*);
 #endif
+
+/*
+** An array of pointers to extension initializer functions for
+** built-in extensions.
+*/
+static int (*const sqlite3BuiltinExtensions[])(sqlite3*) = {
+#ifdef SQLITE_ENABLE_FTS1
+  sqlite3Fts1Init,
+#endif
+#ifdef SQLITE_ENABLE_FTS2
+  sqlite3Fts2Init,
+#endif
+#ifdef SQLITE_ENABLE_FTS3
+  sqlite3Fts3Init,
+#endif
 #ifdef SQLITE_ENABLE_FTS5
-SQLITE_PRIVATE int sqlite3Fts5Init(sqlite3*);
+  sqlite3Fts5Init,
+#endif
+#if defined(SQLITE_ENABLE_ICU) || defined(SQLITE_ENABLE_ICU_COLLATIONS)
+  sqlite3IcuInit,
+#endif
+#ifdef SQLITE_ENABLE_RTREE
+  sqlite3RtreeInit,
+#endif
+#ifdef SQLITE_ENABLE_DBPAGE_VTAB
+  sqlite3DbpageRegister,
+#endif
+#ifdef SQLITE_ENABLE_DBSTAT_VTAB
+  sqlite3DbstatRegister,
+#endif
+  sqlite3TestExtInit,
+#ifdef SQLITE_ENABLE_JSON1
+  sqlite3Json1Init,
+#endif
+#ifdef SQLITE_ENABLE_STMTVTAB
+  sqlite3StmtVtabInit,
 #endif
+#ifdef SQLITE_ENABLE_BYTECODE_VTAB
+  sqlite3VdbeBytecodeVtabInit,
+#endif
+};
 
 #ifndef SQLITE_AMALGAMATION
 /* IMPLEMENTATION-OF: R-46656-45156 The sqlite3_version[] string constant
@@ -160884,7 +166079,7 @@ SQLITE_API char *sqlite3_data_directory = 0;
 **       without blocking.
 */
 SQLITE_API int sqlite3_initialize(void){
-  MUTEX_LOGIC( sqlite3_mutex *pMaster; )       /* The main static mutex */
+  MUTEX_LOGIC( sqlite3_mutex *pMainMtx; )      /* The main static mutex */
   int rc;                                      /* Result code */
 #ifdef SQLITE_EXTRA_INIT
   int bRunExtraInit = 0;                       /* Extra initialization needed */
@@ -160907,7 +166102,10 @@ SQLITE_API int sqlite3_initialize(void){
   ** must be complete.  So isInit must not be set until the very end
   ** of this routine.
   */
-  if( sqlite3GlobalConfig.isInit ) return SQLITE_OK;
+  if( sqlite3GlobalConfig.isInit ){
+    sqlite3MemoryBarrier();
+    return SQLITE_OK;
+  }
 
   /* Make sure the mutex subsystem is initialized.  If unable to
   ** initialize the mutex subsystem, return early with the error.
@@ -160921,13 +166119,13 @@ SQLITE_API int sqlite3_initialize(void){
   if( rc ) return rc;
 
   /* Initialize the malloc() system and the recursive pInitMutex mutex.
-  ** This operation is protected by the STATIC_MASTER mutex.  Note that
+  ** This operation is protected by the STATIC_MAIN mutex.  Note that
   ** MutexAlloc() is called for a static mutex prior to initializing the
   ** malloc subsystem - this implies that the allocation of a static
   ** mutex must not require support from the malloc subsystem.
   */
-  MUTEX_LOGIC( pMaster = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER); )
-  sqlite3_mutex_enter(pMaster);
+  MUTEX_LOGIC( pMainMtx = sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN); )
+  sqlite3_mutex_enter(pMainMtx);
   sqlite3GlobalConfig.isMutexInit = 1;
   if( !sqlite3GlobalConfig.isMallocInit ){
     rc = sqlite3MallocInit();
@@ -160945,7 +166143,7 @@ SQLITE_API int sqlite3_initialize(void){
   if( rc==SQLITE_OK ){
     sqlite3GlobalConfig.nRefInitMutex++;
   }
-  sqlite3_mutex_leave(pMaster);
+  sqlite3_mutex_leave(pMainMtx);
 
   /* If rc is not SQLITE_OK at this point, then either the malloc
   ** subsystem could not be initialized or the system failed to allocate
@@ -160993,6 +166191,7 @@ SQLITE_API int sqlite3_initialize(void){
     if( rc==SQLITE_OK ){
       sqlite3PCacheBufferSetup( sqlite3GlobalConfig.pPage,
           sqlite3GlobalConfig.szPage, sqlite3GlobalConfig.nPage);
+      sqlite3MemoryBarrier();
       sqlite3GlobalConfig.isInit = 1;
 #ifdef SQLITE_EXTRA_INIT
       bRunExtraInit = 1;
@@ -161005,14 +166204,14 @@ SQLITE_API int sqlite3_initialize(void){
   /* Go back under the static mutex and clean up the recursive
   ** mutex to prevent a resource leak.
   */
-  sqlite3_mutex_enter(pMaster);
+  sqlite3_mutex_enter(pMainMtx);
   sqlite3GlobalConfig.nRefInitMutex--;
   if( sqlite3GlobalConfig.nRefInitMutex<=0 ){
     assert( sqlite3GlobalConfig.nRefInitMutex==0 );
     sqlite3_mutex_free(sqlite3GlobalConfig.pInitMutex);
     sqlite3GlobalConfig.pInitMutex = 0;
   }
-  sqlite3_mutex_leave(pMaster);
+  sqlite3_mutex_leave(pMainMtx);
 
   /* The following is just a sanity check to make sure SQLite has
   ** been compiled correctly.  It is important to run this code, but
@@ -161429,6 +166628,9 @@ SQLITE_API int sqlite3_config(int op, ...){
 static int setupLookaside(sqlite3 *db, void *pBuf, int sz, int cnt){
 #ifndef SQLITE_OMIT_LOOKASIDE
   void *pStart;
+  sqlite3_int64 szAlloc = sz*(sqlite3_int64)cnt;
+  int nBig;   /* Number of full-size slots */
+  int nSm;    /* Number smaller LOOKASIDE_SMALL-byte slots */
 
   if( sqlite3LookasideUsed(db,0)>0 ){
     return SQLITE_BUSY;
@@ -161451,37 +166653,71 @@ static int setupLookaside(sqlite3 *db, void *pBuf, int sz, int cnt){
     pStart = 0;
   }else if( pBuf==0 ){
     sqlite3BeginBenignMalloc();
-    pStart = sqlite3Malloc( sz*(sqlite3_int64)cnt );  /* IMP: R-61949-35727 */
+    pStart = sqlite3Malloc( szAlloc );  /* IMP: R-61949-35727 */
     sqlite3EndBenignMalloc();
-    if( pStart ) cnt = sqlite3MallocSize(pStart)/sz;
+    if( pStart ) szAlloc = sqlite3MallocSize(pStart);
   }else{
     pStart = pBuf;
   }
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+  if( sz>=LOOKASIDE_SMALL*3 ){
+    nBig = szAlloc/(3*LOOKASIDE_SMALL+sz);
+    nSm = (szAlloc - sz*nBig)/LOOKASIDE_SMALL;
+  }else if( sz>=LOOKASIDE_SMALL*2 ){
+    nBig = szAlloc/(LOOKASIDE_SMALL+sz);
+    nSm = (szAlloc - sz*nBig)/LOOKASIDE_SMALL;
+  }else
+#endif /* SQLITE_OMIT_TWOSIZE_LOOKASIDE */
+  if( sz>0 ){
+    nBig = szAlloc/sz;
+    nSm = 0;
+  }else{
+    nBig = nSm = 0;
+  }
   db->lookaside.pStart = pStart;
   db->lookaside.pInit = 0;
   db->lookaside.pFree = 0;
   db->lookaside.sz = (u16)sz;
+  db->lookaside.szTrue = (u16)sz;
   if( pStart ){
     int i;
     LookasideSlot *p;
     assert( sz > (int)sizeof(LookasideSlot*) );
-    db->lookaside.nSlot = cnt;
     p = (LookasideSlot*)pStart;
-    for(i=cnt-1; i>=0; i--){
+    for(i=0; i<nBig; i++){
       p->pNext = db->lookaside.pInit;
       db->lookaside.pInit = p;
       p = (LookasideSlot*)&((u8*)p)[sz];
     }
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+    db->lookaside.pSmallInit = 0;
+    db->lookaside.pSmallFree = 0;
+    db->lookaside.pMiddle = p;
+    for(i=0; i<nSm; i++){
+      p->pNext = db->lookaside.pSmallInit;
+      db->lookaside.pSmallInit = p;
+      p = (LookasideSlot*)&((u8*)p)[LOOKASIDE_SMALL];
+    }
+#endif /* SQLITE_OMIT_TWOSIZE_LOOKASIDE */
+    assert( ((uptr)p)<=szAlloc + (uptr)pStart );
     db->lookaside.pEnd = p;
     db->lookaside.bDisable = 0;
     db->lookaside.bMalloced = pBuf==0 ?1:0;
+    db->lookaside.nSlot = nBig+nSm;
   }else{
     db->lookaside.pStart = db;
+#ifndef SQLITE_OMIT_TWOSIZE_LOOKASIDE
+    db->lookaside.pSmallInit = 0;
+    db->lookaside.pSmallFree = 0;
+    db->lookaside.pMiddle = db;
+#endif /* SQLITE_OMIT_TWOSIZE_LOOKASIDE */
     db->lookaside.pEnd = db;
     db->lookaside.bDisable = 1;
+    db->lookaside.sz = 0;
     db->lookaside.bMalloced = 0;
     db->lookaside.nSlot = 0;
   }
+  assert( sqlite3LookasideUsed(db,0)==0 );
 #endif /* SQLITE_OMIT_LOOKASIDE */
   return SQLITE_OK;
 }
@@ -161595,6 +166831,8 @@ SQLITE_API int sqlite3_db_config(sqlite3 *db, int op, ...){
         { SQLITE_DBCONFIG_LEGACY_ALTER_TABLE,    SQLITE_LegacyAlter    },
         { SQLITE_DBCONFIG_DQS_DDL,               SQLITE_DqsDDL         },
         { SQLITE_DBCONFIG_DQS_DML,               SQLITE_DqsDML         },
+        { SQLITE_DBCONFIG_LEGACY_FILE_FORMAT,    SQLITE_LegacyFileFmt  },
+        { SQLITE_DBCONFIG_TRUSTED_SCHEMA,        SQLITE_TrustedSchema  },
       };
       unsigned int i;
       rc = SQLITE_ERROR; /* IMP: R-42790-23372 */
@@ -161842,7 +167080,7 @@ static int sqlite3Close(sqlite3 *db, int forceZombie){
   }
   sqlite3_mutex_enter(db->mutex);
   if( db->mTrace & SQLITE_TRACE_CLOSE ){
-    db->xTrace(SQLITE_TRACE_CLOSE, db->pTraceArg, db, 0);
+    db->trace.xV2(SQLITE_TRACE_CLOSE, db->pTraceArg, db, 0);
   }
 
   /* Force xDisconnect calls on all virtual tables */
@@ -162133,6 +167371,7 @@ SQLITE_PRIVATE const char *sqlite3ErrName(int rc){
       case SQLITE_CANTOPEN_ISDIR:     zName = "SQLITE_CANTOPEN_ISDIR";    break;
       case SQLITE_CANTOPEN_FULLPATH:  zName = "SQLITE_CANTOPEN_FULLPATH"; break;
       case SQLITE_CANTOPEN_CONVPATH:  zName = "SQLITE_CANTOPEN_CONVPATH"; break;
+      case SQLITE_CANTOPEN_SYMLINK:   zName = "SQLITE_CANTOPEN_SYMLINK";  break;
       case SQLITE_PROTOCOL:           zName = "SQLITE_PROTOCOL";          break;
       case SQLITE_EMPTY:              zName = "SQLITE_EMPTY";             break;
       case SQLITE_SCHEMA:             zName = "SQLITE_SCHEMA";            break;
@@ -162254,8 +167493,7 @@ SQLITE_PRIVATE const char *sqlite3ErrStr(int rc){
 */
 static int sqliteDefaultBusyCallback(
   void *ptr,               /* Database connection */
-  int count,               /* Number of times table has been busy */
-  sqlite3_file *pFile      /* The file on which the lock occurred */
+  int count                /* Number of times table has been busy */
 ){
 #if SQLITE_OS_WIN || HAVE_USLEEP
   /* This case is for systems that have support for sleeping for fractions of
@@ -162269,19 +167507,6 @@ static int sqliteDefaultBusyCallback(
   int tmout = db->busyTimeout;
   int delay, prior;
 
-#ifdef SQLITE_ENABLE_SETLK_TIMEOUT
-  if( sqlite3OsFileControl(pFile,SQLITE_FCNTL_LOCK_TIMEOUT,&tmout)==SQLITE_OK ){
-    if( count ){
-      tmout = 0;
-      sqlite3OsFileControl(pFile, SQLITE_FCNTL_LOCK_TIMEOUT, &tmout);
-      return 0;
-    }else{
-      return 1;
-    }
-  }
-#else
-  UNUSED_PARAMETER(pFile);
-#endif
   assert( count>=0 );
   if( count < NDELAY ){
     delay = delays[count];
@@ -162301,7 +167526,6 @@ static int sqliteDefaultBusyCallback(
   ** must be done in increments of whole seconds */
   sqlite3 *db = (sqlite3 *)ptr;
   int tmout = ((sqlite3 *)ptr)->busyTimeout;
-  UNUSED_PARAMETER(pFile);
   if( (count+1)*1000 > tmout ){
     return 0;
   }
@@ -162319,19 +167543,10 @@ static int sqliteDefaultBusyCallback(
 ** If this routine returns non-zero, the lock is retried.  If it
 ** returns 0, the operation aborts with an SQLITE_BUSY error.
 */
-SQLITE_PRIVATE int sqlite3InvokeBusyHandler(BusyHandler *p, sqlite3_file *pFile){
+SQLITE_PRIVATE int sqlite3InvokeBusyHandler(BusyHandler *p){
   int rc;
   if( p->xBusyHandler==0 || p->nBusy<0 ) return 0;
-  if( p->bExtraFileArg ){
-    /* Add an extra parameter with the pFile pointer to the end of the
-    ** callback argument list */
-    int (*xTra)(void*,int,sqlite3_file*);
-    xTra = (int(*)(void*,int,sqlite3_file*))p->xBusyHandler;
-    rc = xTra(p->pBusyArg, p->nBusy, pFile);
-  }else{
-    /* Legacy style busy handler callback */
-    rc = p->xBusyHandler(p->pBusyArg, p->nBusy);
-  }
+  rc = p->xBusyHandler(p->pBusyArg, p->nBusy);
   if( rc==0 ){
     p->nBusy = -1;
   }else{
@@ -162356,7 +167571,6 @@ SQLITE_API int sqlite3_busy_handler(
   db->busyHandler.xBusyHandler = xBusy;
   db->busyHandler.pBusyArg = pArg;
   db->busyHandler.nBusy = 0;
-  db->busyHandler.bExtraFileArg = 0;
   db->busyTimeout = 0;
   sqlite3_mutex_leave(db->mutex);
   return SQLITE_OK;
@@ -162407,7 +167621,6 @@ SQLITE_API int sqlite3_busy_timeout(sqlite3 *db, int ms){
     sqlite3_busy_handler(db, (int(*)(void*,int))sqliteDefaultBusyCallback,
                              (void*)db);
     db->busyTimeout = ms;
-    db->busyHandler.bExtraFileArg = 1;
   }else{
     sqlite3_busy_handler(db, 0, 0);
   }
@@ -162424,7 +167637,7 @@ SQLITE_API void sqlite3_interrupt(sqlite3 *db){
     return;
   }
 #endif
-  db->u1.isInterrupted = 1;
+  AtomicStore(&db->u1.isInterrupted, 1);
 }
 
 
@@ -162465,9 +167678,16 @@ SQLITE_PRIVATE int sqlite3CreateFunc(
 
   assert( SQLITE_FUNC_CONSTANT==SQLITE_DETERMINISTIC );
   assert( SQLITE_FUNC_DIRECT==SQLITE_DIRECTONLY );
-  extraFlags = enc &  (SQLITE_DETERMINISTIC|SQLITE_DIRECTONLY|SQLITE_SUBTYPE);
+  extraFlags = enc &  (SQLITE_DETERMINISTIC|SQLITE_DIRECTONLY|
+                       SQLITE_SUBTYPE|SQLITE_INNOCUOUS);
   enc &= (SQLITE_FUNC_ENCMASK|SQLITE_ANY);
 
+  /* The SQLITE_INNOCUOUS flag is the same bit as SQLITE_FUNC_UNSAFE.  But
+  ** the meaning is inverted.  So flip the bit. */
+  assert( SQLITE_FUNC_UNSAFE==SQLITE_INNOCUOUS );
+  extraFlags ^= SQLITE_FUNC_UNSAFE;
+
+
 #ifndef SQLITE_OMIT_UTF16
   /* If SQLITE_UTF16 is specified as the encoding type, transform this
   ** to one of SQLITE_UTF16LE or SQLITE_UTF16BE using the
@@ -162480,11 +167700,13 @@ SQLITE_PRIVATE int sqlite3CreateFunc(
     enc = SQLITE_UTF16NATIVE;
   }else if( enc==SQLITE_ANY ){
     int rc;
-    rc = sqlite3CreateFunc(db, zFunctionName, nArg, SQLITE_UTF8|extraFlags,
+    rc = sqlite3CreateFunc(db, zFunctionName, nArg,
+         (SQLITE_UTF8|extraFlags)^SQLITE_FUNC_UNSAFE,
          pUserData, xSFunc, xStep, xFinal, xValue, xInverse, pDestructor);
     if( rc==SQLITE_OK ){
-      rc = sqlite3CreateFunc(db, zFunctionName, nArg, SQLITE_UTF16LE|extraFlags,
-          pUserData, xSFunc, xStep, xFinal, xValue, xInverse, pDestructor);
+      rc = sqlite3CreateFunc(db, zFunctionName, nArg,
+           (SQLITE_UTF16LE|extraFlags)^SQLITE_FUNC_UNSAFE,
+           pUserData, xSFunc, xStep, xFinal, xValue, xInverse, pDestructor);
     }
     if( rc!=SQLITE_OK ){
       return rc;
@@ -162747,7 +167969,7 @@ SQLITE_API void *sqlite3_trace(sqlite3 *db, void(*xTrace)(void*,const char*), vo
   sqlite3_mutex_enter(db->mutex);
   pOld = db->pTraceArg;
   db->mTrace = xTrace ? SQLITE_TRACE_LEGACY : 0;
-  db->xTrace = (int(*)(u32,void*,void*,void*))xTrace;
+  db->trace.xLegacy = xTrace;
   db->pTraceArg = pArg;
   sqlite3_mutex_leave(db->mutex);
   return pOld;
@@ -162771,7 +167993,7 @@ SQLITE_API int sqlite3_trace_v2(
   if( mTrace==0 ) xTrace = 0;
   if( xTrace==0 ) mTrace = 0;
   db->mTrace = mTrace;
-  db->xTrace = xTrace;
+  db->trace.xV2 = xTrace;
   db->pTraceArg = pArg;
   sqlite3_mutex_leave(db->mutex);
   return SQLITE_OK;
@@ -163037,7 +168259,7 @@ SQLITE_API int sqlite3_wal_checkpoint_v2(
   /* If there are no active statements, clear the interrupt flag at this
   ** point.  */
   if( db->nVdbeActive==0 ){
-    db->u1.isInterrupted = 0;
+    AtomicStore(&db->u1.isInterrupted, 0);
   }
 
   sqlite3_mutex_leave(db->mutex);
@@ -163447,9 +168669,11 @@ SQLITE_API int sqlite3_limit(sqlite3 *db, int limitId, int newLimit){
 **
 ** If successful, SQLITE_OK is returned. In this case *ppVfs is set to point to
 ** the VFS that should be used to open the database file. *pzFile is set to
-** point to a buffer containing the name of the file to open. It is the
-** responsibility of the caller to eventually call sqlite3_free() to release
-** this buffer.
+** point to a buffer containing the name of the file to open.  The value
+** stored in *pzFile is a database name acceptable to sqlite3_uri_parameter()
+** and is in the same format as names created using sqlite3_create_filename().
+** The caller must invoke sqlite3_free_filename() (not sqlite3_free()!) on
+** the value returned in *pzFile to avoid a memory leak.
 **
 ** If an error occurs, then an SQLite error code is returned and *pzErrMsg
 ** may be set to point to a buffer containing an English language error
@@ -163481,7 +168705,7 @@ SQLITE_PRIVATE int sqlite3ParseUri(
     int eState;                   /* Parser state when parsing URI */
     int iIn;                      /* Input character index */
     int iOut = 0;                 /* Output character index */
-    u64 nByte = nUri+2;           /* Bytes of space to allocate */
+    u64 nByte = nUri+8;           /* Bytes of space to allocate */
 
     /* Make sure the SQLITE_OPEN_URI flag is set to indicate to the VFS xOpen
     ** method that there may be extra parameters following the file-name.  */
@@ -163491,6 +168715,9 @@ SQLITE_PRIVATE int sqlite3ParseUri(
     zFile = sqlite3_malloc64(nByte);
     if( !zFile ) return SQLITE_NOMEM_BKPT;
 
+    memset(zFile, 0, 4);  /* 4-byte of 0x00 is the start of DB name marker */
+    zFile += 4;
+
     iIn = 5;
 #ifdef SQLITE_ALLOW_URI_AUTHORITY
     if( strncmp(zUri+5, "///", 3)==0 ){
@@ -163580,8 +168807,7 @@ SQLITE_PRIVATE int sqlite3ParseUri(
       zFile[iOut++] = c;
     }
     if( eState==1 ) zFile[iOut++] = '\0';
-    zFile[iOut++] = '\0';
-    zFile[iOut++] = '\0';
+    memset(zFile+iOut, 0, 4); /* end-of-options + empty journal filenames */
 
     /* Check if there were any options specified that should be interpreted
     ** here. Options that are interpreted here include "vfs" and those that
@@ -163661,13 +168887,14 @@ SQLITE_PRIVATE int sqlite3ParseUri(
     }
 
   }else{
-    zFile = sqlite3_malloc64(nUri+2);
+    zFile = sqlite3_malloc64(nUri+8);
     if( !zFile ) return SQLITE_NOMEM_BKPT;
+    memset(zFile, 0, 4);
+    zFile += 4;
     if( nUri ){
       memcpy(zFile, zUri, nUri);
     }
-    zFile[nUri] = '\0';
-    zFile[nUri+1] = '\0';
+    memset(zFile+nUri, 0, 4);
     flags &= ~SQLITE_OPEN_URI;
   }
 
@@ -163678,7 +168905,7 @@ SQLITE_PRIVATE int sqlite3ParseUri(
   }
  parse_uri_out:
   if( rc!=SQLITE_OK ){
-    sqlite3_free(zFile);
+    sqlite3_free_filename(zFile);
     zFile = 0;
   }
   *pFlags = flags;
@@ -163686,6 +168913,22 @@ SQLITE_PRIVATE int sqlite3ParseUri(
   return rc;
 }
 
+/*
+** This routine does the core work of extracting URI parameters from a
+** database filename for the sqlite3_uri_parameter() interface.
+*/
+static const char *uriParameter(const char *zFilename, const char *zParam){
+  zFilename += sqlite3Strlen30(zFilename) + 1;
+  while( zFilename[0] ){
+    int x = strcmp(zFilename, zParam);
+    zFilename += sqlite3Strlen30(zFilename) + 1;
+    if( x==0 ) return zFilename;
+    zFilename += sqlite3Strlen30(zFilename) + 1;
+  }
+  return 0;
+}
+
+/* BEGIN SQLCIPHER */
 #if defined(SQLITE_HAS_CODEC)
 /*
 ** Process URI filename query parameters relevant to the SQLite Encryption
@@ -163698,20 +168941,22 @@ SQLITE_PRIVATE int sqlite3CodecQueryParameters(
   const char *zUri       /* URI filename */
 ){
   const char *zKey;
-  if( (zKey = sqlite3_uri_parameter(zUri, "hexkey"))!=0 && zKey[0] ){
+  if( zUri==0 ){
+    return 0;
+  }else if( (zKey = uriParameter(zUri, "hexkey"))!=0 && zKey[0] ){
     u8 iByte;
     int i;
     char zDecoded[40];
-    for(i=0, iByte=0; i<(int)(sizeof(zDecoded)*2) && sqlite3Isxdigit(zKey[i]); i++){
+    for(i=0, iByte=0; i<sizeof(zDecoded)*2 && sqlite3Isxdigit(zKey[i]); i++){
       iByte = (iByte<<4) + sqlite3HexToInt(zKey[i]);
       if( (i&1)!=0 ) zDecoded[i/2] = iByte;
     }
     sqlite3_key_v2(db, zDb, zDecoded, i/2);
     return 1;
-  }else if( (zKey = sqlite3_uri_parameter(zUri, "key"))!=0 ){
+  }else if( (zKey = uriParameter(zUri, "key"))!=0 ){
     sqlite3_key_v2(db, zDb, zKey, sqlite3Strlen30(zKey));
     return 1;
-  }else if( (zKey = sqlite3_uri_parameter(zUri, "textkey"))!=0 ){
+  }else if( (zKey = uriParameter(zUri, "textkey"))!=0 ){
     sqlite3_key_v2(db, zDb, zKey, -1);
     return 1;
   }else{
@@ -163719,6 +168964,7 @@ SQLITE_PRIVATE int sqlite3CodecQueryParameters(
   }
 }
 #endif
+/* END SQLCIPHER */
 
 
 /*
@@ -163737,6 +168983,7 @@ static int openDatabase(
   int isThreadsafe;               /* True for threadsafe connections */
   char *zOpen = 0;                /* Filename argument to pass to BtreeOpen() */
   char *zErrMsg = 0;              /* Error message from sqlite3ParseUri() */
+  int i;                          /* Loop counter */
 
 #ifdef SQLITE_ENABLE_API_ARMOR
   if( ppDb==0 ) return SQLITE_MISUSE_BKPT;
@@ -163780,7 +169027,7 @@ static int openDatabase(
                SQLITE_OPEN_MAIN_JOURNAL |
                SQLITE_OPEN_TEMP_JOURNAL |
                SQLITE_OPEN_SUBJOURNAL |
-               SQLITE_OPEN_MASTER_JOURNAL |
+               SQLITE_OPEN_SUPER_JOURNAL |
                SQLITE_OPEN_NOMUTEX |
                SQLITE_OPEN_FULLMUTEX |
                SQLITE_OPEN_WAL
@@ -163810,6 +169057,7 @@ static int openDatabase(
   db->magic = SQLITE_MAGIC_BUSY;
   db->aDb = db->aDbStatic;
   db->lookaside.bDisable = 1;
+  db->lookaside.sz = 0;
 
   assert( sizeof(db->aLimit)==sizeof(aHardLimit) );
   memcpy(db->aLimit, aHardLimit, sizeof(db->aLimit));
@@ -163823,7 +169071,9 @@ static int openDatabase(
                  | SQLITE_EnableTrigger
                  | SQLITE_EnableView
                  | SQLITE_CacheSpill
-
+#if !defined(SQLITE_TRUSTED_SCHEMA) || SQLITE_TRUSTED_SCHEMA+0!=0
+                 | SQLITE_TrustedSchema
+#endif
 /* The SQLITE_DQS compile-time option determines the default settings
 ** for SQLITE_DBCONFIG_DQS_DDL and SQLITE_DBCONFIG_DQS_DML.
 **
@@ -163882,6 +169132,9 @@ static int openDatabase(
 #if defined(SQLITE_DEFAULT_DEFENSIVE)
                  | SQLITE_Defensive
 #endif
+#if defined(SQLITE_DEFAULT_LEGACY_ALTER_TABLE)
+                 | SQLITE_LegacyAlter
+#endif
       ;
   sqlite3HashInit(&db->aCollSeq);
 #ifndef SQLITE_OMIT_VIRTUALTABLE
@@ -163903,11 +169156,6 @@ static int openDatabase(
   if( db->mallocFailed ){
     goto opendb_out;
   }
-  /* EVIDENCE-OF: R-08308-17224 The default collating function for all
-  ** strings is BINARY.
-  */
-  db->pDfltColl = sqlite3FindCollSeq(db, SQLITE_UTF8, sqlite3StrBINARY, 0);
-  assert( db->pDfltColl!=0 );
 
   /* Parse the filename/URI argument
   **
@@ -163929,7 +169177,7 @@ static int openDatabase(
   testcase( (1<<(flags&7))==0x04 ); /* READWRITE */
   testcase( (1<<(flags&7))==0x40 ); /* READWRITE | CREATE */
   if( ((1<<(flags&7)) & 0x46)==0 ){
-    rc = SQLITE_MISUSE_BKPT;  /* IMP: R-65497-44594 */
+    rc = SQLITE_MISUSE_BKPT;  /* IMP: R-18321-05872 */
   }else{
     rc = sqlite3ParseUri(zVfs, zFilename, &flags, &db->pVfs, &zOpen, &zErrMsg);
   }
@@ -163952,7 +169200,9 @@ static int openDatabase(
   }
   sqlite3BtreeEnter(db->aDb[0].pBt);
   db->aDb[0].pSchema = sqlite3SchemaGet(db, db->aDb[0].pBt);
-  if( !db->mallocFailed ) ENC(db) = SCHEMA_ENC(db);
+  if( !db->mallocFailed ){
+    sqlite3SetTextEncoding(db, SCHEMA_ENC(db));
+  }
   sqlite3BtreeLeave(db->aDb[0].pBt);
   db->aDb[1].pSchema = sqlite3SchemaGet(db, 0);
 
@@ -163977,14 +169227,11 @@ static int openDatabase(
   sqlite3RegisterPerConnectionBuiltinFunctions(db);
   rc = sqlite3_errcode(db);
 
-#ifdef SQLITE_ENABLE_FTS5
-  /* Register any built-in FTS5 module before loading the automatic
-  ** extensions. This allows automatic extensions to register FTS5
-  ** tokenizers and auxiliary functions.  */
-  if( !db->mallocFailed && rc==SQLITE_OK ){
-    rc = sqlite3Fts5Init(db);
+
+  /* Load compiled-in extensions */
+  for(i=0; rc==SQLITE_OK && i<ArraySize(sqlite3BuiltinExtensions); i++){
+    rc = sqlite3BuiltinExtensions[i](db);
   }
-#endif
 
   /* Load automatic extensions - extensions that have been registered
   ** using the sqlite3_automatic_extension() API.
@@ -163997,62 +169244,6 @@ static int openDatabase(
     }
   }
 
-#ifdef SQLITE_ENABLE_FTS1
-  if( !db->mallocFailed ){
-    extern int sqlite3Fts1Init(sqlite3*);
-    rc = sqlite3Fts1Init(db);
-  }
-#endif
-
-#ifdef SQLITE_ENABLE_FTS2
-  if( !db->mallocFailed && rc==SQLITE_OK ){
-    extern int sqlite3Fts2Init(sqlite3*);
-    rc = sqlite3Fts2Init(db);
-  }
-#endif
-
-#ifdef SQLITE_ENABLE_FTS3 /* automatically defined by SQLITE_ENABLE_FTS4 */
-  if( !db->mallocFailed && rc==SQLITE_OK ){
-    rc = sqlite3Fts3Init(db);
-  }
-#endif
-
-#if defined(SQLITE_ENABLE_ICU) || defined(SQLITE_ENABLE_ICU_COLLATIONS)
-  if( !db->mallocFailed && rc==SQLITE_OK ){
-    rc = sqlite3IcuInit(db);
-  }
-#endif
-
-#ifdef SQLITE_ENABLE_RTREE
-  if( !db->mallocFailed && rc==SQLITE_OK){
-    rc = sqlite3RtreeInit(db);
-  }
-#endif
-
-#ifdef SQLITE_ENABLE_DBPAGE_VTAB
-  if( !db->mallocFailed && rc==SQLITE_OK){
-    rc = sqlite3DbpageRegister(db);
-  }
-#endif
-
-#ifdef SQLITE_ENABLE_DBSTAT_VTAB
-  if( !db->mallocFailed && rc==SQLITE_OK){
-    rc = sqlite3DbstatRegister(db);
-  }
-#endif
-
-#ifdef SQLITE_ENABLE_JSON1
-  if( !db->mallocFailed && rc==SQLITE_OK){
-    rc = sqlite3Json1Init(db);
-  }
-#endif
-
-#ifdef SQLITE_ENABLE_STMTVTAB
-  if( !db->mallocFailed && rc==SQLITE_OK){
-    rc = sqlite3StmtVtabInit(db);
-  }
-#endif
-
 #ifdef SQLCIPHER_EXT
   if( !db->mallocFailed && rc==SQLITE_OK ){
     extern int sqlcipherVtabInit(sqlite3 *);
@@ -164060,6 +169251,13 @@ static int openDatabase(
   }
 #endif
 
+#ifdef SQLITE_ENABLE_INTERNAL_FUNCTIONS
+  /* Testing use only!!! The -DSQLITE_ENABLE_INTERNAL_FUNCTIONS=1 compile-time
+  ** option gives access to internal functions by default.
+  ** Testing use only!!! */
+  db->mDbFlags |= DBFLAG_InternalFunc;
+#endif
+
   /* -DSQLITE_DEFAULT_LOCKING_MODE=1 makes EXCLUSIVE the default locking
   ** mode.  -DSQLITE_DEFAULT_LOCKING_MODE=0 make NORMAL the default locking
   ** mode.  Doing nothing at all also makes NORMAL the default.
@@ -164100,10 +169298,12 @@ opendb_out:
     sqlite3GlobalConfig.xSqllog(pArg, db, zFilename, 0);
   }
 #endif
+/* BEGIN SQLCIPHER */
 #if defined(SQLITE_HAS_CODEC)
   if( rc==SQLITE_OK ) sqlite3CodecQueryParameters(db, 0, zOpen);
 #endif
-  sqlite3_free(zOpen);
+/* END SQLCIPHER */
+  sqlite3_free_filename(zOpen);
   return rc & 0xff;
 }
 
@@ -164330,13 +169530,15 @@ SQLITE_PRIVATE int sqlite3CantopenError(int lineno){
   testcase( sqlite3GlobalConfig.xLog!=0 );
   return sqlite3ReportError(SQLITE_CANTOPEN, lineno, "cannot open file");
 }
-#ifdef SQLITE_DEBUG
+#if defined(SQLITE_DEBUG) || defined(SQLITE_ENABLE_CORRUPT_PGNO)
 SQLITE_PRIVATE int sqlite3CorruptPgnoError(int lineno, Pgno pgno){
   char zMsg[100];
   sqlite3_snprintf(sizeof(zMsg), zMsg, "database corruption page %d", pgno);
   testcase( sqlite3GlobalConfig.xLog!=0 );
   return sqlite3ReportError(SQLITE_CORRUPT, lineno, zMsg);
 }
+#endif
+#ifdef SQLITE_DEBUG
 SQLITE_PRIVATE int sqlite3NomemError(int lineno){
   testcase( sqlite3GlobalConfig.xLog!=0 );
   return sqlite3ReportError(SQLITE_NOMEM, lineno, "OOM");
@@ -164539,6 +169741,13 @@ SQLITE_API int sqlite3_file_control(sqlite3 *db, const char *zDbName, int op, vo
     }else if( op==SQLITE_FCNTL_DATA_VERSION ){
       *(unsigned int*)pArg = sqlite3PagerDataVersion(pPager);
       rc = SQLITE_OK;
+    }else if( op==SQLITE_FCNTL_RESERVE_BYTES ){
+      int iNew = *(int*)pArg;
+      *(int*)pArg = sqlite3BtreeGetRequestedReserve(pBtree);
+      if( iNew>=0 && iNew<=255 ){
+        sqlite3BtreeSetPageSize(pBtree, 0, iNew, 0);
+      }
+      rc = SQLITE_OK;
     }else{
       rc = sqlite3OsFileControl(fd, op, pArg);
     }
@@ -164598,6 +169807,7 @@ SQLITE_API int sqlite3_test_control(int op, ...){
     ** This test-control also resets the PRNG so that the new seed will
     ** be used for the next call to sqlite3_randomness().
     */
+#ifndef SQLITE_OMIT_WSD
     case SQLITE_TESTCTRL_PRNG_SEED: {
       int x = va_arg(ap, int);
       int y;
@@ -164608,6 +169818,7 @@ SQLITE_API int sqlite3_test_control(int op, ...){
       sqlite3_randomness(0,0);
       break;
     }
+#endif
 
     /*
     **  sqlite3_test_control(BITVEC_TEST, size, program)
@@ -164753,20 +169964,6 @@ SQLITE_API int sqlite3_test_control(int op, ...){
       break;
     }
 
-    /*   sqlite3_test_control(SQLITE_TESTCTRL_RESERVE, sqlite3 *db, int N)
-    **
-    ** Set the nReserve size to N for the main database on the database
-    ** connection db.
-    */
-    case SQLITE_TESTCTRL_RESERVE: {
-      sqlite3 *db = va_arg(ap, sqlite3*);
-      int x = va_arg(ap,int);
-      sqlite3_mutex_enter(db->mutex);
-      sqlite3BtreeSetPageSize(db->aDb[0].pBt, 0, x, 0);
-      sqlite3_mutex_leave(db->mutex);
-      break;
-    }
-
     /*  sqlite3_test_control(SQLITE_TESTCTRL_OPTIMIZATIONS, sqlite3 *db, int N)
     **
     ** Enable or disable various optimizations for testing purposes.  The
@@ -164792,15 +169989,14 @@ SQLITE_API int sqlite3_test_control(int op, ...){
       break;
     }
 
-    /*   sqlite3_test_control(SQLITE_TESTCTRL_INTERNAL_FUNCS, int onoff);
+    /*   sqlite3_test_control(SQLITE_TESTCTRL_INTERNAL_FUNCTIONS, sqlite3*);
     **
-    ** If parameter onoff is non-zero, internal-use-only SQL functions
-    ** are visible to ordinary SQL.  This is useful for testing but is
-    ** unsafe because invalid parameters to those internal-use-only functions
-    ** can result in crashes or segfaults.
+    ** Toggle the ability to use internal functions on or off for
+    ** the database connection given in the argument.
     */
     case SQLITE_TESTCTRL_INTERNAL_FUNCTIONS: {
-      sqlite3GlobalConfig.bInternalFunctions = va_arg(ap, int);
+      sqlite3 *db = va_arg(ap, sqlite3*);
+      db->mDbFlags ^= DBFLAG_InternalFunc;
       break;
     }
 
@@ -164820,8 +170016,14 @@ SQLITE_API int sqlite3_test_control(int op, ...){
     /*   sqlite3_test_control(SQLITE_TESTCTRL_EXTRA_SCHEMA_CHECKS, int);
     **
     ** Set or clear a flag that causes SQLite to verify that type, name,
-    ** and tbl_name fields of the sqlite_master table.  This is normally
+    ** and tbl_name fields of the sqlite_schema table.  This is normally
     ** on, but it is sometimes useful to turn it off for testing.
+    **
+    ** 2020-07-22:  Disabling EXTRA_SCHEMA_CHECKS also disables the
+    ** verification of rootpage numbers when parsing the schema.  This
+    ** is useful to make it easier to reach strange internal error states
+    ** during testing.  The EXTRA_SCHEMA_CHECKS setting is always enabled
+    ** in production.
     */
     case SQLITE_TESTCTRL_EXTRA_SCHEMA_CHECKS: {
       sqlite3GlobalConfig.bExtraSchemaChecks = va_arg(ap, int);
@@ -164937,6 +170139,83 @@ SQLITE_API int sqlite3_test_control(int op, ...){
 }
 
 /*
+** The Pager stores the Database filename, Journal filename, and WAL filename
+** consecutively in memory, in that order.  The database filename is prefixed
+** by four zero bytes.  Locate the start of the database filename by searching
+** backwards for the first byte following four consecutive zero bytes.
+**
+** This only works if the filename passed in was obtained from the Pager.
+*/
+static const char *databaseName(const char *zName){
+  while( zName[-1]!=0 || zName[-2]!=0 || zName[-3]!=0 || zName[-4]!=0 ){
+    zName--;
+  }
+  return zName;
+}
+
+/*
+** Append text z[] to the end of p[].  Return a pointer to the first
+** character after then zero terminator on the new text in p[].
+*/
+static char *appendText(char *p, const char *z){
+  size_t n = strlen(z);
+  memcpy(p, z, n+1);
+  return p+n+1;
+}
+
+/*
+** Allocate memory to hold names for a database, journal file, WAL file,
+** and query parameters.  The pointer returned is valid for use by
+** sqlite3_filename_database() and sqlite3_uri_parameter() and related
+** functions.
+**
+** Memory layout must be compatible with that generated by the pager
+** and expected by sqlite3_uri_parameter() and databaseName().
+*/
+SQLITE_API char *sqlite3_create_filename(
+  const char *zDatabase,
+  const char *zJournal,
+  const char *zWal,
+  int nParam,
+  const char **azParam
+){
+  sqlite3_int64 nByte;
+  int i;
+  char *pResult, *p;
+  nByte = strlen(zDatabase) + strlen(zJournal) + strlen(zWal) + 10;
+  for(i=0; i<nParam*2; i++){
+    nByte += strlen(azParam[i])+1;
+  }
+  pResult = p = sqlite3_malloc64( nByte );
+  if( p==0 ) return 0;
+  memset(p, 0, 4);
+  p += 4;
+  p = appendText(p, zDatabase);
+  for(i=0; i<nParam*2; i++){
+    p = appendText(p, azParam[i]);
+  }
+  *(p++) = 0;
+  p = appendText(p, zJournal);
+  p = appendText(p, zWal);
+  *(p++) = 0;
+  *(p++) = 0;
+  assert( (sqlite3_int64)(p - pResult)==nByte );
+  return pResult + 4;
+}
+
+/*
+** Free memory obtained from sqlite3_create_filename().  It is a severe
+** error to call this routine with any parameter other than a pointer
+** previously obtained from sqlite3_create_filename() or a NULL pointer.
+*/
+SQLITE_API void sqlite3_free_filename(char *p){
+  if( p==0 ) return;
+  p = (char*)databaseName(p);
+  sqlite3_free(p - 4);
+}
+
+
+/*
 ** This is a utility routine, useful to VFS implementations, that checks
 ** to see if a database file was a URI that contained a specific query
 ** parameter, and if so obtains the value of the query parameter.
@@ -164949,14 +170228,22 @@ SQLITE_API int sqlite3_test_control(int op, ...){
 */
 SQLITE_API const char *sqlite3_uri_parameter(const char *zFilename, const char *zParam){
   if( zFilename==0 || zParam==0 ) return 0;
+  zFilename = databaseName(zFilename);
+  return uriParameter(zFilename, zParam);
+}
+
+/*
+** Return a pointer to the name of Nth query parameter of the filename.
+*/
+SQLITE_API const char *sqlite3_uri_key(const char *zFilename, int N){
+  if( zFilename==0 || N<0 ) return 0;
+  zFilename = databaseName(zFilename);
   zFilename += sqlite3Strlen30(zFilename) + 1;
-  while( zFilename[0] ){
-    int x = strcmp(zFilename, zParam);
+  while( zFilename[0] && (N--)>0 ){
     zFilename += sqlite3Strlen30(zFilename) + 1;
-    if( x==0 ) return zFilename;
     zFilename += sqlite3Strlen30(zFilename) + 1;
   }
-  return 0;
+  return zFilename[0] ? zFilename : 0;
 }
 
 /*
@@ -164985,6 +170272,38 @@ SQLITE_API sqlite3_int64 sqlite3_uri_int64(
 }
 
 /*
+** Translate a filename that was handed to a VFS routine into the corresponding
+** database, journal, or WAL file.
+**
+** It is an error to pass this routine a filename string that was not
+** passed into the VFS from the SQLite core.  Doing so is similar to
+** passing free() a pointer that was not obtained from malloc() - it is
+** an error that we cannot easily detect but that will likely cause memory
+** corruption.
+*/
+SQLITE_API const char *sqlite3_filename_database(const char *zFilename){
+  return databaseName(zFilename);
+}
+SQLITE_API const char *sqlite3_filename_journal(const char *zFilename){
+  zFilename = databaseName(zFilename);
+  zFilename += sqlite3Strlen30(zFilename) + 1;
+  while( zFilename[0] ){
+    zFilename += sqlite3Strlen30(zFilename) + 1;
+    zFilename += sqlite3Strlen30(zFilename) + 1;
+  }
+  return zFilename + 1;
+}
+SQLITE_API const char *sqlite3_filename_wal(const char *zFilename){
+#ifdef SQLITE_OMIT_WAL
+  return 0;
+#else
+  zFilename = sqlite3_filename_journal(zFilename);
+  zFilename += sqlite3Strlen30(zFilename) + 1;
+  return zFilename;
+#endif
+}
+
+/*
 ** Return the Btree pointer identified by zDbName.  Return NULL if not found.
 */
 SQLITE_PRIVATE Btree *sqlite3DbNameToBtree(sqlite3 *db, const char *zDbName){
@@ -165242,12 +170561,12 @@ SQLITE_API const char *sqlite3_compileoption_get(int N){
 */
 
 #define assertMutexHeld() \
-  assert( sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER)) )
+  assert( sqlite3_mutex_held(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN)) )
 
 /*
 ** Head of a linked list of all sqlite3 objects created by this process
 ** for which either sqlite3.pBlockingConnection or sqlite3.pUnlockConnection
-** is not NULL. This variable may only accessed while the STATIC_MASTER
+** is not NULL. This variable may only accessed while the STATIC_MAIN
 ** mutex is held.
 */
 static sqlite3 *SQLITE_WSD sqlite3BlockedList = 0;
@@ -165321,20 +170640,20 @@ static void addToBlockedList(sqlite3 *db){
 }
 
 /*
-** Obtain the STATIC_MASTER mutex.
+** Obtain the STATIC_MAIN mutex.
 */
 static void enterMutex(void){
-  sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
+  sqlite3_mutex_enter(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN));
   checkListProperties(0);
 }
 
 /*
-** Release the STATIC_MASTER mutex.
+** Release the STATIC_MAIN mutex.
 */
 static void leaveMutex(void){
   assertMutexHeld();
   checkListProperties(0);
-  sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MASTER));
+  sqlite3_mutex_leave(sqlite3MutexAlloc(SQLITE_MUTEX_STATIC_MAIN));
 }
 
 /*
@@ -165445,7 +170764,7 @@ SQLITE_PRIVATE void sqlite3ConnectionUnlocked(sqlite3 *db){
   void *aStatic[16];         /* Starter space for aArg[].  No malloc required */
 
   aArg = aStatic;
-  enterMutex();         /* Enter STATIC_MASTER mutex */
+  enterMutex();         /* Enter STATIC_MAIN mutex */
 
   /* This loop runs once for each entry in the blocked-connections list. */
   for(pp=&sqlite3BlockedList; *pp; /* no-op */ ){
@@ -165528,7 +170847,7 @@ SQLITE_PRIVATE void sqlite3ConnectionUnlocked(sqlite3 *db){
     xUnlockNotify(aArg, nArg);
   }
   sqlite3_free(aDyn);
-  leaveMutex();         /* Leave STATIC_MASTER mutex */
+  leaveMutex();         /* Leave STATIC_MAIN mutex */
 }
 
 /*
@@ -165877,7 +171196,7 @@ SQLITE_PRIVATE void sqlite3ConnectionClosed(sqlite3 *db){
 
 /* If not building as part of the core, include sqlite3ext.h. */
 #ifndef SQLITE_CORE
-/* # include "sqlite3ext.h"  */
+/* # include "sqlite3ext.h" */
 SQLITE_EXTENSION_INIT3
 #endif
 
@@ -166317,6 +171636,11 @@ typedef sqlite3_int64 i64;        /* 8-byte signed integer */
 # define TESTONLY(X)
 #endif
 
+#define LARGEST_INT64  (0xffffffff|(((i64)0x7fffffff)<<32))
+#define SMALLEST_INT64 (((i64)-1) - LARGEST_INT64)
+
+#define deliberate_fall_through
+
 #endif /* SQLITE_AMALGAMATION */
 
 #ifdef SQLITE_DEBUG
@@ -166360,6 +171684,7 @@ struct Fts3Table {
   char *zLanguageid;              /* languageid=xxx option, or NULL */
   int nAutoincrmerge;             /* Value configured by 'automerge' */
   u32 nLeafAdd;                   /* Number of leaf blocks added this trans */
+  int bLock;                      /* Used to prevent recursive content= tbls */
 
   /* Precompiled statements used by the implementation. Each of these
   ** statements is run and reset within a single virtual table API call.
@@ -166418,13 +171743,23 @@ struct Fts3Table {
   int mxSavepoint;       /* Largest valid xSavepoint integer */
 #endif
 
-#ifdef SQLITE_TEST
+#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
   /* True to disable the incremental doclist optimization. This is controled
   ** by special insert command 'test-no-incr-doclist'.  */
   int bNoIncrDoclist;
+
+  /* Number of segments in a level */
+  int nMergeCount;
 #endif
 };
 
+/* Macro to find the number of segments to merge */
+#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
+# define MergeCount(P) ((P)->nMergeCount)
+#else
+# define MergeCount(P) FTS3_MERGE_COUNT
+#endif
+
 /*
 ** When the core wants to read from the virtual table, it creates a
 ** virtual table cursor (an instance of the following structure) using
@@ -166688,6 +172023,8 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table*,int,int);
 SQLITE_PRIVATE void sqlite3Fts3ErrMsg(char**,const char*,...);
 SQLITE_PRIVATE int sqlite3Fts3PutVarint(char *, sqlite3_int64);
 SQLITE_PRIVATE int sqlite3Fts3GetVarint(const char *, sqlite_int64 *);
+SQLITE_PRIVATE int sqlite3Fts3GetVarintU(const char *, sqlite_uint64 *);
+SQLITE_PRIVATE int sqlite3Fts3GetVarintBounded(const char*,const char*,sqlite3_int64*);
 SQLITE_PRIVATE int sqlite3Fts3GetVarint32(const char *, int *);
 SQLITE_PRIVATE int sqlite3Fts3VarintLen(sqlite3_uint64);
 SQLITE_PRIVATE void sqlite3Fts3Dequote(char *);
@@ -166696,6 +172033,7 @@ SQLITE_PRIVATE int sqlite3Fts3EvalPhraseStats(Fts3Cursor *, Fts3Expr *, u32 *);
 SQLITE_PRIVATE int sqlite3Fts3FirstFilter(sqlite3_int64, char *, int, char *);
 SQLITE_PRIVATE void sqlite3Fts3CreateStatTable(int*, Fts3Table*);
 SQLITE_PRIVATE int sqlite3Fts3EvalTestDeferred(Fts3Cursor *pCsr, int *pRc);
+SQLITE_PRIVATE int sqlite3Fts3ReadInt(const char *z, int *pnOut);
 
 /* fts3_tokenizer.c */
 SQLITE_PRIVATE const char *sqlite3Fts3NextToken(const char *, int *);
@@ -166774,18 +172112,6 @@ SQLITE_PRIVATE int sqlite3FtsUnicodeIsdiacritic(int);
   SQLITE_EXTENSION_INIT1
 #endif
 
-/*
-** The following are copied from sqliteInt.h.
-**
-** Constants for the largest and smallest possible 64-bit signed integers.
-** These macros are designed to work correctly on both 32-bit and 64-bit
-** compilers.
-*/
-#ifndef SQLITE_AMALGAMATION
-# define LARGEST_INT64  (0xffffffff|(((sqlite3_int64)0x7fffffff)<<32))
-# define SMALLEST_INT64 (((sqlite3_int64)-1) - LARGEST_INT64)
-#endif
-
 static int fts3EvalNext(Fts3Cursor *pCsr);
 static int fts3EvalStart(Fts3Cursor *pCsr);
 static int fts3TermSegReaderCursor(
@@ -166830,12 +172156,7 @@ SQLITE_PRIVATE int sqlite3Fts3PutVarint(char *p, sqlite_int64 v){
   v = (*ptr++);                                               \
   if( (v & mask2)==0 ){ var = v; return ret; }
 
-/*
-** Read a 64-bit variable-length integer from memory starting at p[0].
-** Return the number of bytes read, or 0 on error.
-** The value is stored in *v.
-*/
-SQLITE_PRIVATE int sqlite3Fts3GetVarint(const char *pBuf, sqlite_int64 *v){
+SQLITE_PRIVATE int sqlite3Fts3GetVarintU(const char *pBuf, sqlite_uint64 *v){
   const unsigned char *p = (const unsigned char*)pBuf;
   const unsigned char *pStart = p;
   u32 a;
@@ -166858,6 +172179,41 @@ SQLITE_PRIVATE int sqlite3Fts3GetVarint(const char *pBuf, sqlite_int64 *v){
 }
 
 /*
+** Read a 64-bit variable-length integer from memory starting at p[0].
+** Return the number of bytes read, or 0 on error.
+** The value is stored in *v.
+*/
+SQLITE_PRIVATE int sqlite3Fts3GetVarint(const char *pBuf, sqlite_int64 *v){
+  return sqlite3Fts3GetVarintU(pBuf, (sqlite3_uint64*)v);
+}
+
+/*
+** Read a 64-bit variable-length integer from memory starting at p[0] and
+** not extending past pEnd[-1].
+** Return the number of bytes read, or 0 on error.
+** The value is stored in *v.
+*/
+SQLITE_PRIVATE int sqlite3Fts3GetVarintBounded(
+  const char *pBuf,
+  const char *pEnd,
+  sqlite_int64 *v
+){
+  const unsigned char *p = (const unsigned char*)pBuf;
+  const unsigned char *pStart = p;
+  const unsigned char *pX = (const unsigned char*)pEnd;
+  u64 b = 0;
+  int shift;
+  for(shift=0; shift<=63; shift+=7){
+    u64 c = p<pX ? *p : 0;
+    p++;
+    b += (c&0x7F) << shift;
+    if( (c & 0x80)==0 ) break;
+  }
+  *v = b;
+  return (int)(p - pStart);
+}
+
+/*
 ** Similar to sqlite3Fts3GetVarint(), except that the output is truncated to
 ** a non-negative 32-bit integer before it is returned.
 */
@@ -167411,6 +172767,22 @@ static char *fts3WriteExprList(Fts3Table *p, const char *zFunc, int *pRc){
 }
 
 /*
+** Buffer z contains a positive integer value encoded as utf-8 text.
+** Decode this value and store it in *pnOut, returning the number of bytes
+** consumed. If an overflow error occurs return a negative value.
+*/
+SQLITE_PRIVATE int sqlite3Fts3ReadInt(const char *z, int *pnOut){
+  u64 iVal = 0;
+  int i;
+  for(i=0; z[i]>='0' && z[i]<='9'; i++){
+    iVal = iVal*10 + (z[i] - '0');
+    if( iVal>0x7FFFFFFF ) return -1;
+  }
+  *pnOut = (int)iVal;
+  return i;
+}
+
+/*
 ** This function interprets the string at (*pp) as a non-negative integer
 ** value. It reads the integer and sets *pnOut to the value read, then
 ** sets *pp to point to the byte immediately following the last byte of
@@ -167425,19 +172797,17 @@ static char *fts3WriteExprList(Fts3Table *p, const char *zFunc, int *pRc){
 */
 static int fts3GobbleInt(const char **pp, int *pnOut){
   const int MAX_NPREFIX = 10000000;
-  const char *p;                  /* Iterator pointer */
   int nInt = 0;                   /* Output value */
-
-  for(p=*pp; p[0]>='0' && p[0]<='9'; p++){
-    nInt = nInt * 10 + (p[0] - '0');
-    if( nInt>MAX_NPREFIX ){
-      nInt = 0;
-      break;
-    }
+  int nByte;
+  nByte = sqlite3Fts3ReadInt(*pp, &nInt);
+  if( nInt>MAX_NPREFIX ){
+    nInt = 0;
+  }
+  if( nByte==0 ){
+    return SQLITE_ERROR;
   }
-  if( p==*pp ) return SQLITE_ERROR;
   *pnOut = nInt;
-  *pp = p;
+  *pp += nByte;
   return SQLITE_OK;
 }
 
@@ -167952,6 +173322,10 @@ static int fts3InitVtab(
   fts3DatabasePageSize(&rc, p);
   p->nNodeSize = p->nPgsz-35;
 
+#if defined(SQLITE_DEBUG)||defined(SQLITE_TEST)
+  p->nMergeCount = FTS3_MERGE_COUNT;
+#endif
+
   /* Declare the table schema to SQLite. */
   fts3DeclareVtab(&rc, p);
 
@@ -168047,6 +173421,10 @@ static int fts3BestIndexMethod(sqlite3_vtab *pVTab, sqlite3_index_info *pInfo){
   int iDocidLe = -1;              /* Index of docid<=x constraint, if present */
   int iIdx;
 
+  if( p->bLock ){
+    return SQLITE_ERROR;
+  }
+
   /* By default use a full table scan. This is an expensive option,
   ** so search through the constraints to see if a more efficient
   ** strategy is possible.
@@ -168245,7 +173623,11 @@ static int fts3CursorSeekStmt(Fts3Cursor *pCsr){
     }else{
       zSql = sqlite3_mprintf("SELECT %s WHERE rowid = ?", p->zReadExprlist);
       if( !zSql ) return SQLITE_NOMEM;
-      rc = sqlite3_prepare_v3(p->db, zSql,-1,SQLITE_PREPARE_PERSISTENT,&pCsr->pStmt,0);
+      p->bLock++;
+      rc = sqlite3_prepare_v3(
+          p->db, zSql,-1,SQLITE_PREPARE_PERSISTENT,&pCsr->pStmt,0
+      );
+      p->bLock--;
       sqlite3_free(zSql);
     }
     if( rc==SQLITE_OK ) pCsr->bSeekStmt = 1;
@@ -168263,11 +173645,15 @@ static int fts3CursorSeek(sqlite3_context *pContext, Fts3Cursor *pCsr){
   if( pCsr->isRequireSeek ){
     rc = fts3CursorSeekStmt(pCsr);
     if( rc==SQLITE_OK ){
+      Fts3Table *pTab = (Fts3Table*)pCsr->base.pVtab;
+      pTab->bLock++;
       sqlite3_bind_int64(pCsr->pStmt, 1, pCsr->iPrevId);
       pCsr->isRequireSeek = 0;
       if( SQLITE_ROW==sqlite3_step(pCsr->pStmt) ){
+        pTab->bLock--;
         return SQLITE_OK;
       }else{
+        pTab->bLock--;
         rc = sqlite3_reset(pCsr->pStmt);
         if( rc==SQLITE_OK && ((Fts3Table *)pCsr->base.pVtab)->zContentTbl==0 ){
           /* If no row was found and no error has occurred, then the %_content
@@ -168316,6 +173702,7 @@ static int fts3ScanInteriorNode(
   i64 nAlloc = 0;                 /* Size of allocated buffer */
   int isFirstTerm = 1;            /* True when processing first term on page */
   sqlite3_int64 iChild;           /* Block id of child node to descend to */
+  int nBuffer = 0;                /* Total term size */
 
   /* Skip over the 'height' varint that occurs at the start of every
   ** interior node. Then load the blockid of the left-child of the b-tree
@@ -168340,12 +173727,15 @@ static int fts3ScanInteriorNode(
     int cmp;                      /* memcmp() result */
     int nSuffix;                  /* Size of term suffix */
     int nPrefix = 0;              /* Size of term prefix */
-    int nBuffer;                  /* Total term size */
 
     /* Load the next term on the node into zBuffer. Use realloc() to expand
     ** the size of zBuffer if required.  */
     if( !isFirstTerm ){
       zCsr += fts3GetVarint32(zCsr, &nPrefix);
+      if( nPrefix>nBuffer ){
+        rc = FTS_CORRUPT_VTAB;
+        goto finish_scan;
+      }
     }
     isFirstTerm = 0;
     zCsr += fts3GetVarint32(zCsr, &nSuffix);
@@ -168439,7 +173829,7 @@ static int fts3SelectLeaf(
 
   fts3GetVarint32(zNode, &iHeight);
   rc = fts3ScanInteriorNode(zTerm, nTerm, zNode, nNode, piLeaf, piLeaf2);
-  assert( !piLeaf2 || !piLeaf || rc!=SQLITE_OK || (*piLeaf<=*piLeaf2) );
+  assert_fts3_nc( !piLeaf2 || !piLeaf || rc!=SQLITE_OK || (*piLeaf<=*piLeaf2) );
 
   if( rc==SQLITE_OK && iHeight>1 ){
     char *zBlob = 0;              /* Blob read from %_segments table */
@@ -168459,7 +173849,13 @@ static int fts3SelectLeaf(
       rc = sqlite3Fts3ReadBlock(p, piLeaf?*piLeaf:*piLeaf2, &zBlob, &nBlob, 0);
     }
     if( rc==SQLITE_OK ){
-      rc = fts3SelectLeaf(p, zTerm, nTerm, zBlob, nBlob, piLeaf, piLeaf2);
+      int iNewHeight = 0;
+      fts3GetVarint32(zBlob, &iNewHeight);
+      if( iNewHeight>=iHeight ){
+        rc = FTS_CORRUPT_VTAB;
+      }else{
+        rc = fts3SelectLeaf(p, zTerm, nTerm, zBlob, nBlob, piLeaf, piLeaf2);
+      }
     }
     sqlite3_free(zBlob);
   }
@@ -168476,7 +173872,7 @@ static void fts3PutDeltaVarint(
   sqlite3_int64 *piPrev,          /* IN/OUT: Previous value written to list */
   sqlite3_int64 iVal              /* Write this value to the list */
 ){
-  assert( iVal-*piPrev > 0 || (*piPrev==0 && iVal==0) );
+  assert_fts3_nc( iVal-*piPrev > 0 || (*piPrev==0 && iVal==0) );
   *pp += sqlite3Fts3PutVarint(*pp, iVal-*piPrev);
   *piPrev = iVal;
 }
@@ -168593,7 +173989,9 @@ static void fts3ReadNextPos(
   sqlite3_int64 *pi             /* IN/OUT: Value read from position-list */
 ){
   if( (**pp)&0xFE ){
-    fts3GetDeltaVarint(pp, pi);
+    int iVal;
+    *pp += fts3GetVarint32((*pp), &iVal);
+    *pi += iVal;
     *pi -= 2;
   }else{
     *pi = POSITION_LIST_END;
@@ -168673,6 +174071,9 @@ static int fts3PoslistMerge(
       */
       fts3GetDeltaVarint(&p1, &i1);
       fts3GetDeltaVarint(&p2, &i2);
+      if( i1<2 || i2<2 ){
+        break;
+      }
       do {
         fts3PutDeltaVarint(&p, &iPrev, (i1<i2) ? i1 : i2);
         iPrev -= 2;
@@ -168741,7 +174142,7 @@ static int fts3PoslistPhraseMerge(
   /* Never set both isSaveLeft and isExact for the same invocation. */
   assert( isSaveLeft==0 || isExact==0 );
 
-  assert( p!=0 && *p1!=0 && *p2!=0 );
+  assert_fts3_nc( p!=0 && *p1!=0 && *p2!=0 );
   if( *p1==POS_COLUMN ){
     p1++;
     p1 += fts3GetVarint32(p1, &iCol1);
@@ -168914,12 +174315,12 @@ static void fts3GetDeltaVarint3(
   if( *pp>=pEnd ){
     *pp = 0;
   }else{
-    sqlite3_int64 iVal;
-    *pp += sqlite3Fts3GetVarint(*pp, &iVal);
+    u64 iVal;
+    *pp += sqlite3Fts3GetVarintU(*pp, &iVal);
     if( bDescIdx ){
-      *pVal -= iVal;
+      *pVal = (i64)((u64)*pVal - iVal);
     }else{
-      *pVal += iVal;
+      *pVal = (i64)((u64)*pVal + iVal);
     }
   }
 }
@@ -168946,15 +174347,16 @@ static void fts3PutDeltaVarint3(
   int *pbFirst,                   /* IN/OUT: True after first int written */
   sqlite3_int64 iVal              /* Write this value to the list */
 ){
-  sqlite3_int64 iWrite;
+  sqlite3_uint64 iWrite;
   if( bDescIdx==0 || *pbFirst==0 ){
-    iWrite = iVal - *piPrev;
+    assert_fts3_nc( *pbFirst==0 || iVal>=*piPrev );
+    iWrite = (u64)iVal - (u64)*piPrev;
   }else{
-    iWrite = *piPrev - iVal;
+    assert_fts3_nc( *piPrev>=iVal );
+    iWrite = (u64)*piPrev - (u64)iVal;
   }
   assert( *pbFirst || *piPrev==0 );
   assert_fts3_nc( *pbFirst==0 || iWrite>0 );
-  assert( *pbFirst==0 || iWrite>=0 );
   *pp += sqlite3Fts3PutVarint(*pp, iWrite);
   *piPrev = iVal;
   *pbFirst = 1;
@@ -168970,7 +174372,8 @@ static void fts3PutDeltaVarint3(
 ** Using this makes it easier to write code that can merge doclists that are
 ** sorted in either ascending or descending order.
 */
-#define DOCID_CMP(i1, i2) ((bDescDoclist?-1:1) * (i1-i2))
+/* #define DOCID_CMP(i1, i2) ((bDescDoclist?-1:1) * (i64)((u64)i1-i2)) */
+#define DOCID_CMP(i1, i2) ((bDescDoclist?-1:1) * (i1>i2?1:((i1==i2)?0:-1)))
 
 /*
 ** This function does an "OR" merge of two doclists (output contains all
@@ -169384,7 +174787,7 @@ static int fts3SegReaderCursor(
   ** Fts3SegReaderPending might segfault, as the data structures used by
   ** fts4aux are not completely populated. So it's easiest to filter these
   ** calls out here.  */
-  if( iLevel<0 && p->aIndex ){
+  if( iLevel<0 && p->aIndex && p->iPrevLangid==iLangid ){
     Fts3SegReader *pSeg = 0;
     rc = sqlite3Fts3SegReaderPending(p, iIndex, zTerm, nTerm, isPrefix||isScan, &pSeg);
     if( rc==SQLITE_OK && pSeg ){
@@ -169647,6 +175050,8 @@ static int fts3NextMethod(sqlite3_vtab_cursor *pCursor){
   int rc;
   Fts3Cursor *pCsr = (Fts3Cursor *)pCursor;
   if( pCsr->eSearch==FTS3_DOCID_SEARCH || pCsr->eSearch==FTS3_FULLSCAN_SEARCH ){
+    Fts3Table *pTab = (Fts3Table*)pCursor->pVtab;
+    pTab->bLock++;
     if( SQLITE_ROW!=sqlite3_step(pCsr->pStmt) ){
       pCsr->isEof = 1;
       rc = sqlite3_reset(pCsr->pStmt);
@@ -169654,6 +175059,7 @@ static int fts3NextMethod(sqlite3_vtab_cursor *pCursor){
       pCsr->iPrevId = sqlite3_column_int64(pCsr->pStmt, 0);
       rc = SQLITE_OK;
     }
+    pTab->bLock--;
   }else{
     rc = fts3EvalNext((Fts3Cursor *)pCursor);
   }
@@ -169714,6 +175120,10 @@ static int fts3FilterMethod(
   UNUSED_PARAMETER(idxStr);
   UNUSED_PARAMETER(nVal);
 
+  if( p->bLock ){
+    return SQLITE_ERROR;
+  }
+
   eSearch = (idxNum & 0x0000FFFF);
   assert( eSearch>=0 && eSearch<=(FTS3_FULLTEXT_SEARCH+p->nColumn) );
   assert( p->pSegments==0 );
@@ -169785,7 +175195,11 @@ static int fts3FilterMethod(
       );
     }
     if( zSql ){
-      rc = sqlite3_prepare_v3(p->db,zSql,-1,SQLITE_PREPARE_PERSISTENT,&pCsr->pStmt,0);
+      p->bLock++;
+      rc = sqlite3_prepare_v3(
+          p->db,zSql,-1,SQLITE_PREPARE_PERSISTENT,&pCsr->pStmt,0
+      );
+      p->bLock--;
       sqlite3_free(zSql);
     }else{
       rc = SQLITE_NOMEM;
@@ -169869,7 +175283,7 @@ static int fts3ColumnMethod(
         break;
       }else{
         iCol = p->nColumn;
-        /* fall-through */
+        /* no break */ deliberate_fall_through
       }
 
     default:
@@ -170112,9 +175526,13 @@ static void fts3SnippetFunc(
 
   switch( nVal ){
     case 6: nToken = sqlite3_value_int(apVal[5]);
+            /* no break */ deliberate_fall_through
     case 5: iCol = sqlite3_value_int(apVal[4]);
+            /* no break */ deliberate_fall_through
     case 4: zEllipsis = (const char*)sqlite3_value_text(apVal[3]);
+            /* no break */ deliberate_fall_through
     case 3: zEnd = (const char*)sqlite3_value_text(apVal[2]);
+            /* no break */ deliberate_fall_through
     case 2: zStart = (const char*)sqlite3_value_text(apVal[1]);
   }
   if( !zEllipsis || !zEnd || !zStart ){
@@ -170802,7 +176220,7 @@ static int fts3EvalPhraseStart(Fts3Cursor *pCsr, int bOptOk, Fts3Phrase *p){
   int bIncrOk = (bOptOk
    && pCsr->bDesc==pTab->bDescIdx
    && p->nToken<=MAX_INCR_PHRASE_TOKENS && p->nToken>0
-#ifdef SQLITE_TEST
+#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
    && pTab->bNoIncrDoclist==0
 #endif
   );
@@ -170913,7 +176331,7 @@ SQLITE_PRIVATE void sqlite3Fts3DoclistNext(
 
   assert( nDoclist>0 );
   assert( *pbEof==0 );
-  assert( p || *piDocid==0 );
+  assert_fts3_nc( p || *piDocid==0 );
   assert( !p || (p>=aDoclist && p<=&aDoclist[nDoclist]) );
 
   if( p==0 ){
@@ -170944,15 +176362,16 @@ static void fts3EvalDlPhraseNext(
   u8 *pbEof
 ){
   char *pIter;                            /* Used to iterate through aAll */
-  char *pEnd = &pDL->aAll[pDL->nAll];     /* 1 byte past end of aAll */
+  char *pEnd;                             /* 1 byte past end of aAll */
 
   if( pDL->pNextDocid ){
     pIter = pDL->pNextDocid;
+    assert( pDL->aAll!=0 || pIter==0 );
   }else{
     pIter = pDL->aAll;
   }
 
-  if( pIter>=pEnd ){
+  if( pIter==0 || pIter>=(pEnd = pDL->aAll + pDL->nAll) ){
     /* We have already reached the end of this doclist. EOF. */
     *pbEof = 1;
   }else{
@@ -171324,12 +176743,13 @@ static int fts3EvalAverageDocsize(Fts3Cursor *pCsr, int *pnPage){
     rc = sqlite3Fts3SelectDoctotal(p, &pStmt);
     if( rc!=SQLITE_OK ) return rc;
     a = sqlite3_column_blob(pStmt, 0);
-    assert( a );
-
-    pEnd = &a[sqlite3_column_bytes(pStmt, 0)];
-    a += sqlite3Fts3GetVarint(a, &nDoc);
-    while( a<pEnd ){
-      a += sqlite3Fts3GetVarint(a, &nByte);
+    testcase( a==0 );  /* If %_stat.value set to X'' */
+    if( a ){
+      pEnd = &a[sqlite3_column_bytes(pStmt, 0)];
+      a += sqlite3Fts3GetVarintBounded(a, pEnd, &nDoc);
+      while( a<pEnd ){
+        a += sqlite3Fts3GetVarintBounded(a, pEnd, &nByte);
+      }
     }
     if( nDoc==0 || nByte==0 ){
       sqlite3_reset(pStmt);
@@ -171561,7 +176981,7 @@ static void fts3EvalInvalidatePoslist(Fts3Phrase *pPhrase){
 **
 ** Parameter nNear is passed the NEAR distance of the expression (5 in
 ** the example above). When this function is called, *paPoslist points to
-** the position list, and *pnToken is the number of phrase tokens in, the
+** the position list, and *pnToken is the number of phrase tokens in the
 ** phrase on the other side of the NEAR operator to pPhrase. For example,
 ** if pPhrase refers to the "def ghi" phrase, then *paPoslist points to
 ** the position list associated with phrase "abc".
@@ -171596,10 +177016,12 @@ static int fts3EvalNearTrim(
   );
   if( res ){
     nNew = (int)(pOut - pPhrase->doclist.pList) - 1;
-    assert( pPhrase->doclist.pList[nNew]=='\0' );
-    assert( nNew<=pPhrase->doclist.nList && nNew>0 );
-    memset(&pPhrase->doclist.pList[nNew], 0, pPhrase->doclist.nList - nNew);
-    pPhrase->doclist.nList = nNew;
+    if( nNew>=0 ){
+      assert( pPhrase->doclist.pList[nNew]=='\0' );
+      assert( nNew<=pPhrase->doclist.nList && nNew>0 );
+      memset(&pPhrase->doclist.pList[nNew], 0, pPhrase->doclist.nList - nNew);
+      pPhrase->doclist.nList = nNew;
+    }
     *paPoslist = pPhrase->doclist.pList;
     *pnToken = pPhrase->nToken;
   }
@@ -171708,6 +177130,7 @@ static void fts3EvalNextRow(
                 fts3EvalNextRow(pCsr, pLeft, pRc);
               }
             }
+            pRight->bEof = pLeft->bEof = 1;
           }
         }
         break;
@@ -171950,7 +177373,10 @@ static int fts3EvalTestExpr(
         }else
 #endif
         {
-          bHit = (pExpr->bEof==0 && pExpr->iDocid==pCsr->iPrevId);
+          bHit = (
+              pExpr->bEof==0 && pExpr->iDocid==pCsr->iPrevId
+           && pExpr->pPhrase->doclist.nList>0
+          );
         }
         break;
       }
@@ -172213,7 +177639,8 @@ static int fts3EvalGatherStats(
       fts3EvalRestart(pCsr, pRoot, &rc);
       do {
         fts3EvalNextRow(pCsr, pRoot, &rc);
-        assert( pRoot->bEof==0 );
+        assert_fts3_nc( pRoot->bEof==0 );
+        if( pRoot->bEof ) rc = FTS_CORRUPT_VTAB;
       }while( pRoot->iDocid!=iDocid && rc==SQLITE_OK );
     }
   }
@@ -173478,10 +178905,7 @@ static int getNextNode(
       if( pKey->eType==FTSQUERY_NEAR ){
         assert( nKey==4 );
         if( zInput[4]=='/' && zInput[5]>='0' && zInput[5]<='9' ){
-          nNear = 0;
-          for(nKey=5; zInput[nKey]>='0' && zInput[nKey]<='9'; nKey++){
-            nNear = nNear * 10 + (zInput[nKey] - '0');
-          }
+          nKey += 1+sqlite3Fts3ReadInt(&zInput[nKey+1], &nNear);
         }
       }
 
@@ -175767,7 +181191,9 @@ int queryTokenizer(
 
   sqlite3_bind_text(pStmt, 1, zName, -1, SQLITE_STATIC);
   if( SQLITE_ROW==sqlite3_step(pStmt) ){
-    if( sqlite3_column_type(pStmt, 0)==SQLITE_BLOB ){
+    if( sqlite3_column_type(pStmt, 0)==SQLITE_BLOB
+     && sqlite3_column_bytes(pStmt, 0)==sizeof(*pp)
+    ){
       memcpy((void *)pp, sqlite3_column_blob(pStmt, 0), sizeof(*pp));
     }
   }
@@ -175856,7 +181282,7 @@ SQLITE_PRIVATE int sqlite3Fts3InitHashTable(
 ){
   int rc = SQLITE_OK;
   void *p = (void *)pHash;
-  const int any = SQLITE_ANY;
+  const int any = SQLITE_UTF8|SQLITE_DIRECTONLY;
 
 #ifdef SQLITE_TEST
   char *zTest = 0;
@@ -176323,7 +181749,8 @@ static int fts3tokConnectMethod(
 
   assert( (rc==SQLITE_OK)==(pMod!=0) );
   if( rc==SQLITE_OK ){
-    const char * const *azArg = (const char * const *)&azDequote[1];
+    const char * const *azArg = 0;
+    if( nDequote>1 ) azArg = (const char * const *)&azDequote[1];
     rc = pMod->xCreate((nDequote>1 ? nDequote-1 : 0), azArg, &pTok);
   }
 
@@ -176485,7 +181912,7 @@ static int fts3tokFilterMethod(
     if( pCsr->zInput==0 ){
       rc = SQLITE_NOMEM;
     }else{
-      memcpy(pCsr->zInput, zByte, nByte);
+      if( nByte>0 ) memcpy(pCsr->zInput, zByte, nByte);
       pCsr->zInput[nByte] = 0;
       rc = pTab->pMod->xOpen(pTab->pTok, pCsr->zInput, nByte, &pCsr->pCsr);
       if( rc==SQLITE_OK ){
@@ -176616,7 +182043,7 @@ SQLITE_PRIVATE int sqlite3Fts3InitTok(sqlite3 *db, Fts3Hash *pHash){
 /* #include <string.h> */
 /* #include <assert.h> */
 /* #include <stdlib.h> */
-
+/* #include <stdio.h> */
 
 #define FTS_MAX_APPENDABLE_HEIGHT 16
 
@@ -176660,7 +182087,7 @@ int test_fts3_node_chunk_threshold = (4*1024)*4;
 #endif
 
 /*
-** The two values that may be meaningfully bound to the :1 parameter in
+** The values that may be meaningfully bound to the :1 parameter in
 ** statements SQL_REPLACE_STAT and SQL_SELECT_STAT.
 */
 #define FTS_STAT_DOCTOTAL      0
@@ -176928,13 +182355,15 @@ static int fts3SqlStmt(
 ** returns zero rows.  */
 /* 28 */ "SELECT level, count(*) AS cnt FROM %Q.'%q_segdir' "
          "  GROUP BY level HAVING cnt>=?"
-         "  ORDER BY (level %% 1024) ASC LIMIT 1",
+         "  ORDER BY (level %% 1024) ASC, 2 DESC LIMIT 1",
 
 /* Estimate the upper limit on the number of leaf nodes in a new segment
 ** created by merging the oldest :2 segments from absolute level :1. See
 ** function sqlite3Fts3Incrmerge() for details.  */
 /* 29 */ "SELECT 2 * total(1 + leaves_end_block - start_block) "
-         "  FROM %Q.'%q_segdir' WHERE level = ? AND idx < ?",
+         "  FROM (SELECT * FROM %Q.'%q_segdir' "
+         "        WHERE level = ? ORDER BY idx ASC LIMIT ?"
+         "  )",
 
 /* SQL_DELETE_SEGDIR_ENTRY
 **   Delete the %_segdir entry on absolute level :1 with index :2.  */
@@ -177289,7 +182718,7 @@ static int fts3PendingListAppend(
   assert( !p || p->iLastDocid<=iDocid );
 
   if( !p || p->iLastDocid!=iDocid ){
-    sqlite3_int64 iDelta = iDocid - (p ? p->iLastDocid : 0);
+    u64 iDelta = (u64)iDocid - (u64)(p ? p->iLastDocid : 0);
     if( p ){
       assert( p->nData<p->nSpace );
       assert( p->aData[p->nData]==0 );
@@ -177746,7 +183175,7 @@ static int fts3AllocateSegdirIdx(
     ** segment and allocate (newly freed) index 0 at level iLevel. Otherwise,
     ** if iNext is less than FTS3_MERGE_COUNT, allocate index iNext.
     */
-    if( iNext>=FTS3_MERGE_COUNT ){
+    if( iNext>=MergeCount(p) ){
       fts3LogMerge(16, getAbsoluteLevel(p, iLangid, iIndex, iLevel));
       rc = fts3SegmentMerge(p, iLangid, iIndex, iLevel);
       *piIdx = 0;
@@ -177830,6 +183259,8 @@ SQLITE_PRIVATE int sqlite3Fts3ReadBlock(
       }
       *paBlob = aByte;
     }
+  }else if( rc==SQLITE_ERROR ){
+    rc = FTS_CORRUPT_VTAB;
   }
 
   return rc;
@@ -177972,7 +183403,7 @@ static int fts3SegReaderNext(
   pNext += fts3GetVarint32(pNext, &nSuffix);
   if( nSuffix<=0
    || (&pReader->aNode[pReader->nNode] - pNext)<nSuffix
-   || nPrefix>pReader->nTermAlloc
+   || nPrefix>pReader->nTerm
   ){
     return FTS_CORRUPT_VTAB;
   }
@@ -178006,6 +183437,7 @@ static int fts3SegReaderNext(
   */
   if( pReader->nDoclist > pReader->nNode-(pReader->aDoclist-pReader->aNode)
    || (pReader->nPopulate==0 && pReader->aDoclist[pReader->nDoclist-1])
+   || pReader->nDoclist==0
   ){
     return FTS_CORRUPT_VTAB;
   }
@@ -178122,18 +183554,18 @@ static int fts3SegReaderNextDocid(
     }else{
       rc = fts3SegReaderRequire(pReader, p, FTS3_VARINT_MAX);
       if( rc==SQLITE_OK ){
-        sqlite3_int64 iDelta;
-        pReader->pOffsetList = p + sqlite3Fts3GetVarint(p, &iDelta);
+        u64 iDelta;
+        pReader->pOffsetList = p + sqlite3Fts3GetVarintU(p, &iDelta);
         if( pTab->bDescIdx ){
-          pReader->iDocid -= iDelta;
+          pReader->iDocid = (i64)((u64)pReader->iDocid - iDelta);
         }else{
-          pReader->iDocid += iDelta;
+          pReader->iDocid = (i64)((u64)pReader->iDocid + iDelta);
         }
       }
     }
   }
 
-  return SQLITE_OK;
+  return rc;
 }
 
 
@@ -178623,6 +184055,11 @@ static int fts3NodeAddTerm(
     nPrefix = fts3PrefixCompress(pTree->zTerm, pTree->nTerm, zTerm, nTerm);
     nSuffix = nTerm-nPrefix;
 
+    /* If nSuffix is zero or less, then zTerm/nTerm must be a prefix of
+    ** pWriter->zTerm/pWriter->nTerm. i.e. must be equal to or less than when
+    ** compared with BINARY collation. This indicates corruption.  */
+    if( nSuffix<=0 ) return FTS_CORRUPT_VTAB;
+
     nReq += sqlite3Fts3VarintLen(nPrefix)+sqlite3Fts3VarintLen(nSuffix)+nSuffix;
     if( nReq<=p->nNodeSize || !pTree->zTerm ){
 
@@ -178867,6 +184304,7 @@ static int fts3SegWriterAdd(
     int rc;
 
     /* The current leaf node is full. Write it out to the database. */
+    if( pWriter->iFree==LARGEST_INT64 ) return FTS_CORRUPT_VTAB;
     rc = fts3WriteSegment(p, pWriter->iFree++, pWriter->aData, nData);
     if( rc!=SQLITE_OK ) return rc;
     p->nLeafAdd++;
@@ -178916,9 +184354,11 @@ static int fts3SegWriterAdd(
   /* Append the prefix-compressed term and doclist to the buffer. */
   nData += sqlite3Fts3PutVarint(&pWriter->aData[nData], nPrefix);
   nData += sqlite3Fts3PutVarint(&pWriter->aData[nData], nSuffix);
+  assert( nSuffix>0 );
   memcpy(&pWriter->aData[nData], &zTerm[nPrefix], nSuffix);
   nData += nSuffix;
   nData += sqlite3Fts3PutVarint(&pWriter->aData[nData], nDoclist);
+  assert( nDoclist>0 );
   memcpy(&pWriter->aData[nData], aDoclist, nDoclist);
   pWriter->nData = nData + nDoclist;
 
@@ -178938,6 +184378,7 @@ static int fts3SegWriterAdd(
       pWriter->zTerm = zNew;
     }
     assert( pWriter->zTerm==pWriter->zMalloc );
+    assert( nTerm>0 );
     memcpy(pWriter->zTerm, zTerm, nTerm);
   }else{
     pWriter->zTerm = (char *)zTerm;
@@ -179084,7 +184525,7 @@ static int fts3SegmentIsMaxLevel(Fts3Table *p, i64 iAbsLevel, int *pbMax){
   if( rc!=SQLITE_OK ) return rc;
   sqlite3_bind_int64(pStmt, 1, iAbsLevel+1);
   sqlite3_bind_int64(pStmt, 2,
-      ((iAbsLevel/FTS3_SEGDIR_MAXLEVEL)+1) * FTS3_SEGDIR_MAXLEVEL
+      (((u64)iAbsLevel/FTS3_SEGDIR_MAXLEVEL)+1) * FTS3_SEGDIR_MAXLEVEL
   );
 
   *pbMax = 0;
@@ -179246,6 +184687,7 @@ static int fts3MsrBufferData(
     pMsr->aBuffer = pNew;
   }
 
+  assert( nList>0 );
   memcpy(pMsr->aBuffer, pList, nList);
   return SQLITE_OK;
 }
@@ -179433,6 +184875,19 @@ SQLITE_PRIVATE int sqlite3Fts3MsrIncrRestart(Fts3MultiSegReader *pCsr){
   return SQLITE_OK;
 }
 
+static int fts3GrowSegReaderBuffer(Fts3MultiSegReader *pCsr, int nReq){
+  if( nReq>pCsr->nBuffer ){
+    char *aNew;
+    pCsr->nBuffer = nReq*2;
+    aNew = sqlite3_realloc(pCsr->aBuffer, pCsr->nBuffer);
+    if( !aNew ){
+      return SQLITE_NOMEM;
+    }
+    pCsr->aBuffer = aNew;
+  }
+  return SQLITE_OK;
+}
+
 
 SQLITE_PRIVATE int sqlite3Fts3SegReaderStep(
   Fts3Table *p,                   /* Virtual table handle */
@@ -179559,25 +185014,17 @@ SQLITE_PRIVATE int sqlite3Fts3SegReaderStep(
           ** doclist. */
           sqlite3_int64 iDelta;
           if( p->bDescIdx && nDoclist>0 ){
-            iDelta = iPrev - iDocid;
+            if( iPrev<=iDocid ) return FTS_CORRUPT_VTAB;
+            iDelta = (i64)((u64)iPrev - (u64)iDocid);
           }else{
-            iDelta = iDocid - iPrev;
-          }
-          if( iDelta<=0 && (nDoclist>0 || iDelta!=iDocid) ){
-            return FTS_CORRUPT_VTAB;
+            if( nDoclist>0 && iPrev>=iDocid ) return FTS_CORRUPT_VTAB;
+            iDelta = (i64)((u64)iDocid - (u64)iPrev);
           }
-          assert( nDoclist>0 || iDelta==iDocid );
 
           nByte = sqlite3Fts3VarintLen(iDelta) + (isRequirePos?nList+1:0);
-          if( nDoclist+nByte>pCsr->nBuffer ){
-            char *aNew;
-            pCsr->nBuffer = (nDoclist+nByte)*2;
-            aNew = sqlite3_realloc(pCsr->aBuffer, pCsr->nBuffer);
-            if( !aNew ){
-              return SQLITE_NOMEM;
-            }
-            pCsr->aBuffer = aNew;
-          }
+
+          rc = fts3GrowSegReaderBuffer(pCsr, nByte+nDoclist);
+          if( rc ) return rc;
 
           if( isFirst ){
             char *a = &pCsr->aBuffer[nDoclist];
@@ -179602,6 +185049,9 @@ SQLITE_PRIVATE int sqlite3Fts3SegReaderStep(
         fts3SegReaderSort(apSegment, nMerge, j, xCmp);
       }
       if( nDoclist>0 ){
+        rc = fts3GrowSegReaderBuffer(pCsr, nDoclist+FTS3_NODE_PADDING);
+        if( rc ) return rc;
+        memset(&pCsr->aBuffer[nDoclist], 0, FTS3_NODE_PADDING);
         pCsr->aDoclist = pCsr->aBuffer;
         pCsr->nDoclist = nDoclist;
         rc = SQLITE_ROW;
@@ -179651,11 +185101,11 @@ static void fts3ReadEndBlockField(
   if( zText ){
     int i;
     int iMul = 1;
-    i64 iVal = 0;
+    u64 iVal = 0;
     for(i=0; zText[i]>='0' && zText[i]<='9'; i++){
       iVal = iVal*10 + (zText[i] - '0');
     }
-    *piEndBlock = iVal;
+    *piEndBlock = (i64)iVal;
     while( zText[i]==' ' ) i++;
     iVal = 0;
     if( zText[i]=='-' ){
@@ -179665,7 +185115,7 @@ static void fts3ReadEndBlockField(
     for(/* no-op */; zText[i]>='0' && zText[i]<='9'; i++){
       iVal = iVal*10 + (zText[i] - '0');
     }
-    *pnByte = (iVal * (i64)iMul);
+    *pnByte = ((i64)iVal * (i64)iMul);
   }
 }
 
@@ -179848,7 +185298,7 @@ static int fts3SegmentMerge(
         csr.zTerm, csr.nTerm, csr.aDoclist, csr.nDoclist);
   }
   if( rc!=SQLITE_OK ) goto finished;
-  assert( pWriter || bIgnoreEmpty );
+  assert_fts3_nc( pWriter || bIgnoreEmpty );
 
   if( iLevel!=FTS3_SEGCURSOR_PENDING ){
     rc = fts3DeleteSegdir(
@@ -180075,7 +185525,10 @@ static int fts3DoOptimize(Fts3Table *p, int bReturnDone){
   int rc;
   sqlite3_stmt *pAllLangid = 0;
 
-  rc = fts3SqlStmt(p, SQL_SELECT_ALL_LANGID, &pAllLangid, 0);
+  rc = sqlite3Fts3PendingTermsFlush(p);
+  if( rc==SQLITE_OK ){
+    rc = fts3SqlStmt(p, SQL_SELECT_ALL_LANGID, &pAllLangid, 0);
+  }
   if( rc==SQLITE_OK ){
     int rc2;
     sqlite3_bind_int(pAllLangid, 1, p->iPrevLangid);
@@ -180096,7 +185549,6 @@ static int fts3DoOptimize(Fts3Table *p, int bReturnDone){
   }
 
   sqlite3Fts3SegmentsClose(p);
-  sqlite3Fts3PendingTermsClear(p);
 
   return (rc==SQLITE_OK && bReturnDone && bSeenDone) ? SQLITE_DONE : rc;
 }
@@ -180434,6 +185886,7 @@ static int fts3IncrmergePush(
     ** be added to.  */
     nPrefix = fts3PrefixCompress(pNode->key.a, pNode->key.n, zTerm, nTerm);
     nSuffix = nTerm - nPrefix;
+    if(nSuffix<=0 ) return FTS_CORRUPT_VTAB;
     nSpace  = sqlite3Fts3VarintLen(nPrefix);
     nSpace += sqlite3Fts3VarintLen(nSuffix) + nSuffix;
 
@@ -180828,6 +186281,10 @@ static int fts3IncrmergeLoad(
       pWriter->bNoLeafData = (pWriter->nLeafData==0);
       nRoot = sqlite3_column_bytes(pSelect, 4);
       aRoot = sqlite3_column_blob(pSelect, 4);
+      if( aRoot==0 ){
+        sqlite3_reset(pSelect);
+        return nRoot ? SQLITE_NOMEM : FTS_CORRUPT_VTAB;
+      }
     }else{
       return sqlite3_reset(pSelect);
     }
@@ -180863,6 +186320,10 @@ static int fts3IncrmergeLoad(
       int i;
       int nHeight = (int)aRoot[0];
       NodeWriter *pNode;
+      if( nHeight<1 || nHeight>=FTS_MAX_APPENDABLE_HEIGHT ){
+        sqlite3_reset(pSelect);
+        return FTS_CORRUPT_VTAB;
+      }
 
       pWriter->nLeafEst = (int)((iEnd - iStart) + 1)/FTS_MAX_APPENDABLE_HEIGHT;
       pWriter->iStart = iStart;
@@ -181423,13 +186884,17 @@ static int fts3IncrmergeHintPop(Blob *pHint, i64 *piAbsLevel, int *pnInput){
   const int nHint = pHint->n;
   int i;
 
-  i = pHint->n-2;
+  i = pHint->n-1;
+  if( (pHint->a[i] & 0x80) ) return FTS_CORRUPT_VTAB;
   while( i>0 && (pHint->a[i-1] & 0x80) ) i--;
+  if( i==0 ) return FTS_CORRUPT_VTAB;
+  i--;
   while( i>0 && (pHint->a[i-1] & 0x80) ) i--;
 
   pHint->n = i;
   i += sqlite3Fts3GetVarint(&pHint->a[i], piAbsLevel);
   i += fts3GetVarint32(&pHint->a[i], pnInput);
+  assert( i<=nHint );
   if( i!=nHint ) return FTS_CORRUPT_VTAB;
 
   return SQLITE_OK;
@@ -181499,8 +186964,14 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){
 
       rc = fts3IncrmergeHintPop(&hint, &iHintAbsLevel, &nHintSeg);
       if( nSeg<0 || (iAbsLevel % nMod) >= (iHintAbsLevel % nMod) ){
+        /* Based on the scan in the block above, it is known that there
+        ** are no levels with a relative level smaller than that of
+        ** iAbsLevel with more than nSeg segments, or if nSeg is -1,
+        ** no levels with more than nMin segments. Use this to limit the
+        ** value of nHintSeg to avoid a large memory allocation in case the
+        ** merge-hint is corrupt*/
         iAbsLevel = iHintAbsLevel;
-        nSeg = nHintSeg;
+        nSeg = MIN(MAX(nMin,nSeg), nHintSeg);
         bUseHint = 1;
         bDirtyHint = 1;
       }else{
@@ -181513,7 +186984,13 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){
     /* If nSeg is less that zero, then there is no level with at least
     ** nMin segments and no hint in the %_stat table. No work to do.
     ** Exit early in this case.  */
-    if( nSeg<0 ) break;
+    if( nSeg<=0 ) break;
+
+    assert( nMod<=0x7FFFFFFF );
+    if( iAbsLevel<0 || iAbsLevel>(nMod<<32) ){
+      rc = FTS_CORRUPT_VTAB;
+      break;
+    }
 
     /* Open a cursor to iterate through the contents of the oldest nSeg
     ** indexes of absolute level iAbsLevel. If this cursor is opened using
@@ -181541,8 +187018,15 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){
     }
     if( SQLITE_OK==rc && pCsr->nSegment==nSeg
      && SQLITE_OK==(rc = sqlite3Fts3SegReaderStart(p, pCsr, pFilter))
-     && SQLITE_ROW==(rc = sqlite3Fts3SegReaderStep(p, pCsr))
     ){
+      int bEmpty = 0;
+      rc = sqlite3Fts3SegReaderStep(p, pCsr);
+      if( rc==SQLITE_OK ){
+        bEmpty = 1;
+      }else if( rc!=SQLITE_ROW ){
+        sqlite3Fts3SegReaderFinish(pCsr);
+        break;
+      }
       if( bUseHint && iIdx>0 ){
         const char *zKey = pCsr->zTerm;
         int nKey = pCsr->nTerm;
@@ -181553,11 +187037,13 @@ SQLITE_PRIVATE int sqlite3Fts3Incrmerge(Fts3Table *p, int nMerge, int nMin){
 
       if( rc==SQLITE_OK && pWriter->nLeafEst ){
         fts3LogMerge(nSeg, iAbsLevel);
-        do {
-          rc = fts3IncrmergeAppend(p, pWriter, pCsr);
-          if( rc==SQLITE_OK ) rc = sqlite3Fts3SegReaderStep(p, pCsr);
-          if( pWriter->nWork>=nRem && rc==SQLITE_ROW ) rc = SQLITE_OK;
-        }while( rc==SQLITE_ROW );
+        if( bEmpty==0 ){
+          do {
+            rc = fts3IncrmergeAppend(p, pWriter, pCsr);
+            if( rc==SQLITE_OK ) rc = sqlite3Fts3SegReaderStep(p, pCsr);
+            if( pWriter->nWork>=nRem && rc==SQLITE_ROW ) rc = SQLITE_OK;
+          }while( rc==SQLITE_ROW );
+        }
 
         /* Update or delete the input segments */
         if( rc==SQLITE_OK ){
@@ -181622,7 +187108,7 @@ static int fts3DoIncrmerge(
   const char *zParam              /* Nul-terminated string containing "A,B" */
 ){
   int rc;
-  int nMin = (FTS3_MERGE_COUNT / 2);
+  int nMin = (MergeCount(p) / 2);
   int nMerge = 0;
   const char *z = zParam;
 
@@ -181667,7 +187153,7 @@ static int fts3DoAutoincrmerge(
   int rc = SQLITE_OK;
   sqlite3_stmt *pStmt = 0;
   p->nAutoincrmerge = fts3Getint(&zParam);
-  if( p->nAutoincrmerge==1 || p->nAutoincrmerge>FTS3_MERGE_COUNT ){
+  if( p->nAutoincrmerge==1 || p->nAutoincrmerge>MergeCount(p) ){
     p->nAutoincrmerge = 8;
   }
   if( !p->bHasStat ){
@@ -181750,12 +187236,12 @@ static u64 fts3ChecksumIndex(
 
       i64 iDocid = 0;
       i64 iCol = 0;
-      i64 iPos = 0;
+      u64 iPos = 0;
 
       pCsr += sqlite3Fts3GetVarint(pCsr, &iDocid);
       while( pCsr<pEnd ){
-        i64 iVal = 0;
-        pCsr += sqlite3Fts3GetVarint(pCsr, &iVal);
+        u64 iVal = 0;
+        pCsr += sqlite3Fts3GetVarintU(pCsr, &iVal);
         if( pCsr<pEnd ){
           if( iVal==0 || iVal==1 ){
             iCol = 0;
@@ -181763,8 +187249,12 @@ static u64 fts3ChecksumIndex(
             if( iVal ){
               pCsr += sqlite3Fts3GetVarint(pCsr, &iCol);
             }else{
-              pCsr += sqlite3Fts3GetVarint(pCsr, &iVal);
-              iDocid += iVal;
+              pCsr += sqlite3Fts3GetVarintU(pCsr, &iVal);
+              if( p->bDescIdx ){
+                iDocid = (i64)((u64)iDocid - iVal);
+              }else{
+                iDocid = (i64)((u64)iDocid + iVal);
+              }
             }
           }else{
             iPos += (iVal - 2);
@@ -181837,10 +187327,9 @@ static int fts3IntegrityCheck(Fts3Table *p, int *pbOk){
       for(iCol=0; rc==SQLITE_OK && iCol<p->nColumn; iCol++){
         if( p->abNotindexed[iCol]==0 ){
           const char *zText = (const char *)sqlite3_column_text(pStmt, iCol+1);
-          int nText = sqlite3_column_bytes(pStmt, iCol+1);
           sqlite3_tokenizer_cursor *pT = 0;
 
-          rc = sqlite3Fts3OpenTokenizer(p->pTokenizer, iLang, zText, nText,&pT);
+          rc = sqlite3Fts3OpenTokenizer(p->pTokenizer, iLang, zText, -1, &pT);
           while( rc==SQLITE_OK ){
             char const *zToken;       /* Buffer containing token */
             int nToken = 0;           /* Number of bytes in token */
@@ -181925,7 +187414,7 @@ static int fts3DoIntegrityCheck(
 ** meaningful value to insert is the text 'optimize'.
 */
 static int fts3SpecialInsert(Fts3Table *p, sqlite3_value *pVal){
-  int rc;                         /* Return Code */
+  int rc = SQLITE_ERROR;           /* Return Code */
   const char *zVal = (const char *)sqlite3_value_text(pVal);
   int nVal = sqlite3_value_bytes(pVal);
 
@@ -181941,21 +187430,27 @@ static int fts3SpecialInsert(Fts3Table *p, sqlite3_value *pVal){
     rc = fts3DoIncrmerge(p, &zVal[6]);
   }else if( nVal>10 && 0==sqlite3_strnicmp(zVal, "automerge=", 10) ){
     rc = fts3DoAutoincrmerge(p, &zVal[10]);
-#ifdef SQLITE_TEST
-  }else if( nVal>9 && 0==sqlite3_strnicmp(zVal, "nodesize=", 9) ){
-    p->nNodeSize = atoi(&zVal[9]);
-    rc = SQLITE_OK;
-  }else if( nVal>11 && 0==sqlite3_strnicmp(zVal, "maxpending=", 9) ){
-    p->nMaxPendingData = atoi(&zVal[11]);
-    rc = SQLITE_OK;
-  }else if( nVal>21 && 0==sqlite3_strnicmp(zVal, "test-no-incr-doclist=", 21) ){
-    p->bNoIncrDoclist = atoi(&zVal[21]);
-    rc = SQLITE_OK;
-#endif
+#if defined(SQLITE_DEBUG) || defined(SQLITE_TEST)
   }else{
-    rc = SQLITE_ERROR;
+    int v;
+    if( nVal>9 && 0==sqlite3_strnicmp(zVal, "nodesize=", 9) ){
+      v = atoi(&zVal[9]);
+      if( v>=24 && v<=p->nPgsz-35 ) p->nNodeSize = v;
+      rc = SQLITE_OK;
+    }else if( nVal>11 && 0==sqlite3_strnicmp(zVal, "maxpending=", 9) ){
+      v = atoi(&zVal[11]);
+      if( v>=64 && v<=FTS3_MAX_PENDING_DATA ) p->nMaxPendingData = v;
+      rc = SQLITE_OK;
+    }else if( nVal>21 && 0==sqlite3_strnicmp(zVal,"test-no-incr-doclist=",21) ){
+      p->bNoIncrDoclist = atoi(&zVal[21]);
+      rc = SQLITE_OK;
+    }else if( nVal>11 && 0==sqlite3_strnicmp(zVal,"mergecount=",11) ){
+      v = atoi(&zVal[11]);
+      if( v>=4 && v<=FTS3_MERGE_COUNT && (v&1)==0 ) p->nMergeCount = v;
+      rc = SQLITE_OK;
+    }
+#endif
   }
-
   return rc;
 }
 
@@ -182882,7 +188377,7 @@ static int fts3BestSnippet(
     /* Set the *pmSeen output variable. */
     for(i=0; i<nList; i++){
       if( sIter.aPhrase[i].pHead ){
-        *pmSeen |= (u64)1 << i;
+        *pmSeen |= (u64)1 << (i%64);
       }
     }
 
@@ -183198,7 +188693,7 @@ static int fts3ExprLHits(
     iStart = pExpr->iPhrase * ((p->nCol + 31) / 32);
   }
 
-  while( 1 ){
+  if( pIter ) while( 1 ){
     int nHit = fts3ColumnlistCount(&pIter);
     if( (pPhrase->iColumn>=pTab->nColumn || pPhrase->iColumn==iCol) ){
       if( p->flag==FTS3_MATCHINFO_LHITS ){
@@ -183360,11 +188855,15 @@ static int fts3MatchinfoSelectDoctotal(
   Fts3Table *pTab,
   sqlite3_stmt **ppStmt,
   sqlite3_int64 *pnDoc,
-  const char **paLen
+  const char **paLen,
+  const char **ppEnd
 ){
   sqlite3_stmt *pStmt;
   const char *a;
+  const char *pEnd;
   sqlite3_int64 nDoc;
+  int n;
+
 
   if( !*ppStmt ){
     int rc = sqlite3Fts3SelectDoctotal(pTab, ppStmt);
@@ -183373,12 +188872,20 @@ static int fts3MatchinfoSelectDoctotal(
   pStmt = *ppStmt;
   assert( sqlite3_data_count(pStmt)==1 );
 
+  n = sqlite3_column_bytes(pStmt, 0);
   a = sqlite3_column_blob(pStmt, 0);
-  a += sqlite3Fts3GetVarint(a, &nDoc);
-  if( nDoc==0 ) return FTS_CORRUPT_VTAB;
-  *pnDoc = (u32)nDoc;
+  if( a==0 ){
+    return FTS_CORRUPT_VTAB;
+  }
+  pEnd = a + n;
+  a += sqlite3Fts3GetVarintBounded(a, pEnd, &nDoc);
+  if( nDoc<=0 || a>pEnd ){
+    return FTS_CORRUPT_VTAB;
+  }
+  *pnDoc = nDoc;
 
   if( paLen ) *paLen = a;
+  if( ppEnd ) *ppEnd = pEnd;
   return SQLITE_OK;
 }
 
@@ -183559,7 +189066,7 @@ static int fts3MatchinfoValues(
       case FTS3_MATCHINFO_NDOC:
         if( bGlobal ){
           sqlite3_int64 nDoc = 0;
-          rc = fts3MatchinfoSelectDoctotal(pTab, &pSelect, &nDoc, 0);
+          rc = fts3MatchinfoSelectDoctotal(pTab, &pSelect, &nDoc, 0, 0);
           pInfo->aMatchinfo[0] = (u32)nDoc;
         }
         break;
@@ -183568,14 +189075,19 @@ static int fts3MatchinfoValues(
         if( bGlobal ){
           sqlite3_int64 nDoc;     /* Number of rows in table */
           const char *a;          /* Aggregate column length array */
+          const char *pEnd;       /* First byte past end of length array */
 
-          rc = fts3MatchinfoSelectDoctotal(pTab, &pSelect, &nDoc, &a);
+          rc = fts3MatchinfoSelectDoctotal(pTab, &pSelect, &nDoc, &a, &pEnd);
           if( rc==SQLITE_OK ){
             int iCol;
             for(iCol=0; iCol<pInfo->nCol; iCol++){
               u32 iVal;
               sqlite3_int64 nToken;
               a += sqlite3Fts3GetVarint(a, &nToken);
+              if( a>pEnd ){
+                rc = SQLITE_CORRUPT_VTAB;
+                break;
+              }
               iVal = (u32)(((u32)(nToken&0xffffffff)+nDoc/2)/nDoc);
               pInfo->aMatchinfo[iCol] = iVal;
             }
@@ -183589,9 +189101,14 @@ static int fts3MatchinfoValues(
         if( rc==SQLITE_OK ){
           int iCol;
           const char *a = sqlite3_column_blob(pSelectDocsize, 0);
+          const char *pEnd = a + sqlite3_column_bytes(pSelectDocsize, 0);
           for(iCol=0; iCol<pInfo->nCol; iCol++){
             sqlite3_int64 nToken;
-            a += sqlite3Fts3GetVarint(a, &nToken);
+            a += sqlite3Fts3GetVarintBounded(a, pEnd, &nToken);
+            if( a>pEnd ){
+              rc = SQLITE_CORRUPT_VTAB;
+              break;
+            }
             pInfo->aMatchinfo[iCol] = (u32)nToken;
           }
         }
@@ -183622,7 +189139,7 @@ static int fts3MatchinfoValues(
         if( rc!=SQLITE_OK ) break;
         if( bGlobal ){
           if( pCsr->pDeferred ){
-            rc = fts3MatchinfoSelectDoctotal(pTab, &pSelect, &pInfo->nDoc, 0);
+            rc = fts3MatchinfoSelectDoctotal(pTab, &pSelect, &pInfo->nDoc,0,0);
             if( rc!=SQLITE_OK ) break;
           }
           rc = fts3ExprIterate(pExpr, fts3ExprGlobalHitsCb,(void*)pInfo);
@@ -184878,6 +190395,10 @@ SQLITE_EXTENSION_INIT1
 # define SMALLEST_INT64 (((sqlite3_int64)-1) - LARGEST_INT64)
 #endif
 
+#ifndef deliberate_fall_through
+# define deliberate_fall_through
+#endif
+
 /*
 ** Versions of isspace(), isalnum() and isdigit() to which it is safe
 ** to pass signed char values.
@@ -185090,6 +190611,7 @@ static int jsonGrow(JsonString *p, u32 N){
 /* Append N bytes from zIn onto the end of the JsonString string.
 */
 static void jsonAppendRaw(JsonString *p, const char *zIn, u32 N){
+  if( N==0 ) return;
   if( (N+p->nUsed >= p->nAlloc) && jsonGrow(p,N)!=0 ) return;
   memcpy(p->zBuf+p->nUsed, zIn, N);
   p->nUsed += N;
@@ -185295,7 +190817,7 @@ static void jsonRenderNode(
         jsonAppendString(pOut, pNode->u.zJContent, pNode->n);
         break;
       }
-      /* Fall through into the next case */
+      /* no break */ deliberate_fall_through
     }
     case JSON_REAL:
     case JSON_INT: {
@@ -185359,6 +190881,37 @@ static void jsonReturnJson(
 }
 
 /*
+** Translate a single byte of Hex into an integer.
+** This routine only works if h really is a valid hexadecimal
+** character:  0..9a..fA..F
+*/
+static u8 jsonHexToInt(int h){
+  assert( (h>='0' && h<='9') ||  (h>='a' && h<='f') ||  (h>='A' && h<='F') );
+#ifdef SQLITE_EBCDIC
+  h += 9*(1&~(h>>4));
+#else
+  h += 9*(1&(h>>6));
+#endif
+  return (u8)(h & 0xf);
+}
+
+/*
+** Convert a 4-byte hex string into an integer
+*/
+static u32 jsonHexToInt4(const char *z){
+  u32 v;
+  assert( safe_isxdigit(z[0]) );
+  assert( safe_isxdigit(z[1]) );
+  assert( safe_isxdigit(z[2]) );
+  assert( safe_isxdigit(z[3]) );
+  v = (jsonHexToInt(z[0])<<12)
+    + (jsonHexToInt(z[1])<<8)
+    + (jsonHexToInt(z[2])<<4)
+    + jsonHexToInt(z[3]);
+  return v;
+}
+
+/*
 ** Make the JsonNode the return value of the function.
 */
 static void jsonReturn(
@@ -185405,7 +190958,7 @@ static void jsonReturn(
       sqlite3_result_int64(pCtx, i);
       int_done:
       break;
-      int_as_real: /* fall through to real */;
+      int_as_real: i=0; /* no break */ deliberate_fall_through
     }
     case JSON_REAL: {
       double r;
@@ -185451,15 +191004,8 @@ static void jsonReturn(
           }else{
             c = z[++i];
             if( c=='u' ){
-              u32 v = 0, k;
-              for(k=0; k<4; i++, k++){
-                assert( i<n-2 );
-                c = z[i+1];
-                assert( safe_isxdigit(c) );
-                if( c<='9' ) v = v*16 + c - '0';
-                else if( c<='F' ) v = v*16 + c - 'A' + 10;
-                else v = v*16 + c - 'a' + 10;
-              }
+              u32 v = jsonHexToInt4(z+i+1);
+              i += 4;
               if( v==0 ) break;
               if( v<=0x7f ){
                 zOut[j++] = (char)v;
@@ -185467,9 +191013,25 @@ static void jsonReturn(
                 zOut[j++] = (char)(0xc0 | (v>>6));
                 zOut[j++] = 0x80 | (v&0x3f);
               }else{
-                zOut[j++] = (char)(0xe0 | (v>>12));
-                zOut[j++] = 0x80 | ((v>>6)&0x3f);
-                zOut[j++] = 0x80 | (v&0x3f);
+                u32 vlo;
+                if( (v&0xfc00)==0xd800
+                  && i<n-6
+                  && z[i+1]=='\\'
+                  && z[i+2]=='u'
+                  && ((vlo = jsonHexToInt4(z+i+3))&0xfc00)==0xdc00
+                ){
+                  /* We have a surrogate pair */
+                  v = ((v&0x3ff)<<10) + (vlo&0x3ff) + 0x10000;
+                  i += 6;
+                  zOut[j++] = 0xf0 | (v>>18);
+                  zOut[j++] = 0x80 | ((v>>12)&0x3f);
+                  zOut[j++] = 0x80 | ((v>>6)&0x3f);
+                  zOut[j++] = 0x80 | (v&0x3f);
+                }else{
+                  zOut[j++] = 0xe0 | (v>>12);
+                  zOut[j++] = 0x80 | ((v>>6)&0x3f);
+                  zOut[j++] = 0x80 | (v&0x3f);
+                }
               }
             }else{
               if( c=='b' ){
@@ -185972,18 +191534,49 @@ static JsonNode *jsonLookupStep(
       }
       return pNode;
     }
-  }else if( zPath[0]=='[' && safe_isdigit(zPath[1]) ){
-    if( pRoot->eType!=JSON_ARRAY ) return 0;
+  }else if( zPath[0]=='[' ){
     i = 0;
     j = 1;
     while( safe_isdigit(zPath[j]) ){
       i = i*10 + zPath[j] - '0';
       j++;
     }
-    if( zPath[j]!=']' ){
-      *pzErr = zPath;
-      return 0;
+    if( j<2 || zPath[j]!=']' ){
+      if( zPath[1]=='#' ){
+        JsonNode *pBase = pRoot;
+        int iBase = iRoot;
+        if( pRoot->eType!=JSON_ARRAY ) return 0;
+        for(;;){
+          while( j<=pBase->n ){
+            if( (pBase[j].jnFlags & JNODE_REMOVE)==0 ) i++;
+            j += jsonNodeSize(&pBase[j]);
+          }
+          if( (pBase->jnFlags & JNODE_APPEND)==0 ) break;
+          iBase += pBase->u.iAppend;
+          pBase = &pParse->aNode[iBase];
+          j = 1;
+        }
+        j = 2;
+        if( zPath[2]=='-' && safe_isdigit(zPath[3]) ){
+          unsigned int x = 0;
+          j = 3;
+          do{
+            x = x*10 + zPath[j] - '0';
+            j++;
+          }while( safe_isdigit(zPath[j]) );
+          if( x>i ) return 0;
+          i -= x;
+        }
+        if( zPath[j]!=']' ){
+          *pzErr = zPath;
+          return 0;
+        }
+      }else{
+        *pzErr = zPath;
+        return 0;
+      }
     }
+    if( pRoot->eType!=JSON_ARRAY ) return 0;
     zPath += j + 1;
     j = 1;
     for(;;){
@@ -186856,6 +192449,7 @@ static int jsonEachConnect(
     pNew = *ppVtab = sqlite3_malloc( sizeof(*pNew) );
     if( pNew==0 ) return SQLITE_NOMEM;
     memset(pNew, 0, sizeof(*pNew));
+    sqlite3_vtab_config(db, SQLITE_VTAB_INNOCUOUS);
   }
   return rc;
 }
@@ -187067,6 +192661,7 @@ static int jsonEachColumn(
       }
       /* For json_each() path and root are the same so fall through
       ** into the root case */
+      /* no break */ deliberate_fall_through
     }
     default: {
       const char *zRoot = p->zRoot;
@@ -187346,16 +192941,19 @@ SQLITE_PRIVATE int sqlite3Json1Init(sqlite3 *db){
     { "json_tree",            &jsonTreeModule               },
   };
 #endif
+  static const int enc =
+       SQLITE_UTF8 |
+       SQLITE_DETERMINISTIC |
+       SQLITE_INNOCUOUS;
   for(i=0; i<sizeof(aFunc)/sizeof(aFunc[0]) && rc==SQLITE_OK; i++){
-    rc = sqlite3_create_function(db, aFunc[i].zName, aFunc[i].nArg,
-                                 SQLITE_UTF8 | SQLITE_DETERMINISTIC,
+    rc = sqlite3_create_function(db, aFunc[i].zName, aFunc[i].nArg, enc,
                                  (void*)&aFunc[i].flag,
                                  aFunc[i].xFunc, 0, 0);
   }
 #ifndef SQLITE_OMIT_WINDOWFUNC
   for(i=0; i<sizeof(aAgg)/sizeof(aAgg[0]) && rc==SQLITE_OK; i++){
     rc = sqlite3_create_window_function(db, aAgg[i].zName, aAgg[i].nArg,
-                SQLITE_SUBTYPE | SQLITE_UTF8 | SQLITE_DETERMINISTIC, 0,
+                                 SQLITE_SUBTYPE | enc, 0,
                                  aAgg[i].xStep, aAgg[i].xFinal,
                                  aAgg[i].xValue, jsonGroupInverse, 0);
   }
@@ -187451,6 +193049,7 @@ SQLITE_API int sqlite3_json_init(
 #else
 /*   #include "sqlite3.h" */
 #endif
+SQLITE_PRIVATE int sqlite3GetToken(const unsigned char*,int*); /* In the SQLite core */
 
 #ifndef SQLITE_AMALGAMATION
 #include "sqlite3rtree.h"
@@ -187470,6 +193069,7 @@ typedef unsigned int u32;
 /* #include <string.h> */
 /* #include <stdio.h> */
 /* #include <assert.h> */
+/* #include <stdlib.h> */
 
 /*  The following macro is used to suppress compiler warnings.
 */
@@ -187714,6 +193314,12 @@ struct RtreeConstraint {
 #define RTREE_MATCH 0x46  /* F: Old-style sqlite3_rtree_geometry_callback() */
 #define RTREE_QUERY 0x47  /* G: New-style sqlite3_rtree_query_callback() */
 
+/* Special operators available only on cursors.  Needs to be consecutive
+** with the normal values above, but must be less than RTREE_MATCH.  These
+** are used in the cursor for contraints such as x=NULL (RTREE_FALSE) or
+** x<'xyz' (RTREE_TRUE) */
+#define RTREE_TRUE  0x3f  /* ? */
+#define RTREE_FALSE 0x40  /* @ */
 
 /*
 ** An rtree structure node.
@@ -187802,6 +193408,23 @@ struct RtreeMatchArg {
 #endif
 
 /*
+** Make sure that the compiler intrinsics we desire are enabled when
+** compiling with an appropriate version of MSVC unless prevented by
+** the SQLITE_DISABLE_INTRINSIC define.
+*/
+#if !defined(SQLITE_DISABLE_INTRINSIC)
+#  if defined(_MSC_VER) && _MSC_VER>=1400
+#    if !defined(_WIN32_WCE)
+/* #      include <intrin.h> */
+#      pragma intrinsic(_byteswap_ulong)
+#      pragma intrinsic(_byteswap_uint64)
+#    else
+/* #      include <cmnintrin.h> */
+#    endif
+#  endif
+#endif
+
+/*
 ** Macros to determine whether the machine is big or little endian,
 ** and whether or not that determination is run-time or compile-time.
 **
@@ -188447,9 +194070,12 @@ static int rtreeOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){
 
 
 /*
-** Free the RtreeCursor.aConstraint[] array and its contents.
+** Reset a cursor back to its initial state.
 */
-static void freeCursorConstraints(RtreeCursor *pCsr){
+static void resetCursor(RtreeCursor *pCsr){
+  Rtree *pRtree = (Rtree *)(pCsr->base.pVtab);
+  int ii;
+  sqlite3_stmt *pStmt;
   if( pCsr->aConstraint ){
     int i;                        /* Used to iterate through constraint array */
     for(i=0; i<pCsr->nConstraint; i++){
@@ -188462,6 +194088,13 @@ static void freeCursorConstraints(RtreeCursor *pCsr){
     sqlite3_free(pCsr->aConstraint);
     pCsr->aConstraint = 0;
   }
+  for(ii=0; ii<RTREE_CACHE_SZ; ii++) nodeRelease(pRtree, pCsr->aNode[ii]);
+  sqlite3_free(pCsr->aPoint);
+  pStmt = pCsr->pReadAux;
+  memset(pCsr, 0, sizeof(RtreeCursor));
+  pCsr->base.pVtab = (sqlite3_vtab*)pRtree;
+  pCsr->pReadAux = pStmt;
+
 }
 
 /*
@@ -188469,13 +194102,10 @@ static void freeCursorConstraints(RtreeCursor *pCsr){
 */
 static int rtreeClose(sqlite3_vtab_cursor *cur){
   Rtree *pRtree = (Rtree *)(cur->pVtab);
-  int ii;
   RtreeCursor *pCsr = (RtreeCursor *)cur;
   assert( pRtree->nCursor>0 );
-  freeCursorConstraints(pCsr);
+  resetCursor(pCsr);
   sqlite3_finalize(pCsr->pReadAux);
-  sqlite3_free(pCsr->aPoint);
-  for(ii=0; ii<RTREE_CACHE_SZ; ii++) nodeRelease(pRtree, pCsr->aNode[ii]);
   sqlite3_free(pCsr);
   pRtree->nCursor--;
   nodeBlobReset(pRtree);
@@ -188633,9 +194263,12 @@ static void rtreeNonleafConstraint(
   pCellData += 8 + 4*(p->iCoord&0xfe);
 
   assert(p->op==RTREE_LE || p->op==RTREE_LT || p->op==RTREE_GE
-      || p->op==RTREE_GT || p->op==RTREE_EQ );
+      || p->op==RTREE_GT || p->op==RTREE_EQ || p->op==RTREE_TRUE
+      || p->op==RTREE_FALSE );
   assert( ((((char*)pCellData) - (char*)0)&3)==0 );  /* 4-byte aligned */
   switch( p->op ){
+    case RTREE_TRUE:  return;   /* Always satisfied */
+    case RTREE_FALSE: break;    /* Never satisfied */
     case RTREE_LE:
     case RTREE_LT:
     case RTREE_EQ:
@@ -188673,16 +194306,19 @@ static void rtreeLeafConstraint(
   RtreeDValue xN;      /* Coordinate value converted to a double */
 
   assert(p->op==RTREE_LE || p->op==RTREE_LT || p->op==RTREE_GE
-      || p->op==RTREE_GT || p->op==RTREE_EQ );
+      || p->op==RTREE_GT || p->op==RTREE_EQ || p->op==RTREE_TRUE
+      || p->op==RTREE_FALSE );
   pCellData += 8 + p->iCoord*4;
   assert( ((((char*)pCellData) - (char*)0)&3)==0 );  /* 4-byte aligned */
   RTREE_DECODE_COORD(eInt, pCellData, xN);
   switch( p->op ){
-    case RTREE_LE: if( xN <= p->u.rValue ) return;  break;
-    case RTREE_LT: if( xN <  p->u.rValue ) return;  break;
-    case RTREE_GE: if( xN >= p->u.rValue ) return;  break;
-    case RTREE_GT: if( xN >  p->u.rValue ) return;  break;
-    default:       if( xN == p->u.rValue ) return;  break;
+    case RTREE_TRUE:  return;   /* Always satisfied */
+    case RTREE_FALSE: break;    /* Never satisfied */
+    case RTREE_LE:    if( xN <= p->u.rValue ) return;  break;
+    case RTREE_LT:    if( xN <  p->u.rValue ) return;  break;
+    case RTREE_GE:    if( xN >= p->u.rValue ) return;  break;
+    case RTREE_GT:    if( xN >  p->u.rValue ) return;  break;
+    default:          if( xN == p->u.rValue ) return;  break;
   }
   *peWithin = NOT_WITHIN;
 }
@@ -189175,17 +194811,11 @@ static int rtreeFilter(
   int ii;
   int rc = SQLITE_OK;
   int iCell = 0;
-  sqlite3_stmt *pStmt;
 
   rtreeReference(pRtree);
 
   /* Reset the cursor to the same state as rtreeOpen() leaves it in. */
-  freeCursorConstraints(pCsr);
-  sqlite3_free(pCsr->aPoint);
-  pStmt = pCsr->pReadAux;
-  memset(pCsr, 0, sizeof(RtreeCursor));
-  pCsr->base.pVtab = (sqlite3_vtab*)pRtree;
-  pCsr->pReadAux = pStmt;
+  resetCursor(pCsr);
 
   pCsr->iStrategy = idxNum;
   if( idxNum==1 ){
@@ -189194,7 +194824,15 @@ static int rtreeFilter(
     RtreeSearchPoint *p;     /* Search point for the leaf */
     i64 iRowid = sqlite3_value_int64(argv[0]);
     i64 iNode = 0;
-    rc = findLeafNode(pRtree, iRowid, &pLeaf, &iNode);
+    int eType = sqlite3_value_numeric_type(argv[0]);
+    if( eType==SQLITE_INTEGER
+     || (eType==SQLITE_FLOAT && sqlite3_value_double(argv[0])==iRowid)
+    ){
+      rc = findLeafNode(pRtree, iRowid, &pLeaf, &iNode);
+    }else{
+      rc = SQLITE_OK;
+      pLeaf = 0;
+    }
     if( rc==SQLITE_OK && pLeaf!=0 ){
       p = rtreeSearchPointNew(pCsr, RTREE_ZERO, 0);
       assert( p!=0 );  /* Always returns pCsr->sPoint */
@@ -189224,6 +194862,7 @@ static int rtreeFilter(
                 || (idxStr && (int)strlen(idxStr)==argc*2) );
         for(ii=0; ii<argc; ii++){
           RtreeConstraint *p = &pCsr->aConstraint[ii];
+          int eType = sqlite3_value_numeric_type(argv[ii]);
           p->op = idxStr[ii*2];
           p->iCoord = idxStr[ii*2+1]-'0';
           if( p->op>=RTREE_MATCH ){
@@ -189238,12 +194877,21 @@ static int rtreeFilter(
             p->pInfo->nCoord = pRtree->nDim2;
             p->pInfo->anQueue = pCsr->anQueue;
             p->pInfo->mxLevel = pRtree->iDepth + 1;
-          }else{
+          }else if( eType==SQLITE_INTEGER || eType==SQLITE_FLOAT ){
 #ifdef SQLITE_RTREE_INT_ONLY
             p->u.rValue = sqlite3_value_int64(argv[ii]);
 #else
             p->u.rValue = sqlite3_value_double(argv[ii]);
 #endif
+          }else{
+            p->u.rValue = RTREE_ZERO;
+            if( eType==SQLITE_NULL ){
+              p->op = RTREE_FALSE;
+            }else if( p->op==RTREE_LT || p->op==RTREE_LE ){
+              p->op = RTREE_TRUE;
+            }else{
+              p->op = RTREE_FALSE;
+            }
           }
         }
       }
@@ -190739,14 +196387,14 @@ static int rtreeSavepoint(sqlite3_vtab *pVtab, int iSavepoint){
 ** on sqlite_stat1 data. Otherwise, use RTREE_DEFAULT_ROWEST.
 */
 static int rtreeQueryStat1(sqlite3 *db, Rtree *pRtree){
-  const char *zFmt = "SELECT stat FROM %Q.sqlcipher_stat1 WHERE tbl = '%q_rowid'";
+  const char *zFmt = "SELECT stat FROM %Q.sqlite_stat1 WHERE tbl = '%q_rowid'";
   char *zSql;
   sqlite3_stmt *p;
   int rc;
   i64 nRow = 0;
 
   rc = sqlite3_table_column_metadata(
-      db, pRtree->zDb, "sqlcipher_stat1",0,0,0,0,0,0
+      db, pRtree->zDb, "sqlite_stat1",0,0,0,0,0,0
   );
   if( rc!=SQLITE_OK ){
     pRtree->nRowEst = RTREE_DEFAULT_ROWEST;
@@ -191021,6 +196669,14 @@ static int getNodeSize(
 }
 
 /*
+** Return the length of a token
+*/
+static int rtreeTokenLength(const char *z){
+  int dummy = 0;
+  return sqlite3GetToken((const unsigned char*)z,&dummy);
+}
+
+/*
 ** This function is the implementation of both the xConnect and xCreate
 ** methods of the r-tree virtual table.
 **
@@ -191056,8 +196712,8 @@ static int rtreeInit(
   };
 
   assert( RTREE_MAX_AUX_COLUMN<256 ); /* Aux columns counted by a u8 */
-  if( argc>RTREE_MAX_AUX_COLUMN+3 ){
-    *pzErr = sqlite3_mprintf("%s", aErrMsg[3]);
+  if( argc<6 || argc>RTREE_MAX_AUX_COLUMN+3 ){
+    *pzErr = sqlite3_mprintf("%s", aErrMsg[2 + (argc>=6)]);
     return SQLITE_ERROR;
   }
 
@@ -191085,16 +196741,20 @@ static int rtreeInit(
   ** the r-tree table schema.
   */
   pSql = sqlite3_str_new(db);
-  sqlite3_str_appendf(pSql, "CREATE TABLE x(%s", argv[3]);
+  sqlite3_str_appendf(pSql, "CREATE TABLE x(%.*s INT",
+                      rtreeTokenLength(argv[3]), argv[3]);
   for(ii=4; ii<argc; ii++){
-    if( argv[ii][0]=='+' ){
+    const char *zArg = argv[ii];
+    if( zArg[0]=='+' ){
       pRtree->nAux++;
-      sqlite3_str_appendf(pSql, ",%s", argv[ii]+1);
+      sqlite3_str_appendf(pSql, ",%.*s", rtreeTokenLength(zArg+1), zArg+1);
     }else if( pRtree->nAux>0 ){
       break;
     }else{
+      static const char *azFormat[] = {",%.*s REAL", ",%.*s INT"};
       pRtree->nDim2++;
-      sqlite3_str_appendf(pSql, ",%s", argv[ii]);
+      sqlite3_str_appendf(pSql, azFormat[eCoordType],
+                          rtreeTokenLength(zArg), zArg);
     }
   }
   sqlite3_str_appendf(pSql, ");");
@@ -192380,6 +198040,8 @@ static GeoPoly *geopolyBBox(
       aCoord[2].f = mnY;
       aCoord[3].f = mxY;
     }
+  }else{
+    memset(aCoord, 0, sizeof(RtreeCoord)*4);
   }
   return pOut;
 }
@@ -193042,17 +198704,11 @@ static int geopolyFilter(
   RtreeNode *pRoot = 0;
   int rc = SQLITE_OK;
   int iCell = 0;
-  sqlite3_stmt *pStmt;
 
   rtreeReference(pRtree);
 
   /* Reset the cursor to the same state as rtreeOpen() leaves it in. */
-  freeCursorConstraints(pCsr);
-  sqlite3_free(pCsr->aPoint);
-  pStmt = pCsr->pReadAux;
-  memset(pCsr, 0, sizeof(RtreeCursor));
-  pCsr->base.pVtab = (sqlite3_vtab*)pRtree;
-  pCsr->pReadAux = pStmt;
+  resetCursor(pCsr);
 
   pCsr->iStrategy = idxNum;
   if( idxNum==1 ){
@@ -193489,14 +199145,20 @@ static int sqlite3_geopoly_init(sqlite3 *db){
   };
   int i;
   for(i=0; i<sizeof(aFunc)/sizeof(aFunc[0]) && rc==SQLITE_OK; i++){
-    int enc = aFunc[i].bPure ? SQLITE_UTF8|SQLITE_DETERMINISTIC : SQLITE_UTF8;
+    int enc;
+    if( aFunc[i].bPure ){
+      enc = SQLITE_UTF8|SQLITE_DETERMINISTIC|SQLITE_INNOCUOUS;
+    }else{
+      enc = SQLITE_UTF8|SQLITE_DIRECTONLY;
+    }
     rc = sqlite3_create_function(db, aFunc[i].zName, aFunc[i].nArg,
                                  enc, 0,
                                  aFunc[i].xFunc, 0, 0);
   }
   for(i=0; i<sizeof(aAgg)/sizeof(aAgg[0]) && rc==SQLITE_OK; i++){
-    rc = sqlite3_create_function(db, aAgg[i].zName, 1, SQLITE_UTF8, 0,
-                                 0, aAgg[i].xStep, aAgg[i].xFinal);
+    rc = sqlite3_create_function(db, aAgg[i].zName, 1,
+              SQLITE_UTF8|SQLITE_DETERMINISTIC|SQLITE_INNOCUOUS, 0,
+              0, aAgg[i].xStep, aAgg[i].xFinal);
   }
   if( rc==SQLITE_OK ){
     rc = sqlite3_create_module_v2(db, "geopoly", &geopolyModule, 0, 0);
@@ -193830,7 +199492,7 @@ static int icuLikeCompare(
     **     3. uPattern is an unescaped escape character, or
     **     4. uPattern is to be handled as an ordinary character
     */
-    if( !prevEscape && uPattern==MATCH_ALL ){
+    if( uPattern==MATCH_ALL && !prevEscape && uPattern!=(uint32_t)uEsc ){
       /* Case 1. */
       uint8_t c;
 
@@ -193856,12 +199518,12 @@ static int icuLikeCompare(
       }
       return 0;
 
-    }else if( !prevEscape && uPattern==MATCH_ONE ){
+    }else if( uPattern==MATCH_ONE && !prevEscape && uPattern!=(uint32_t)uEsc ){
       /* Case 2. */
       if( *zString==0 ) return 0;
       SQLITE_ICU_SKIP_UTF8(zString);
 
-    }else if( !prevEscape && uPattern==(uint32_t)uEsc){
+    }else if( uPattern==(uint32_t)uEsc && !prevEscape ){
       /* Case 3. */
       prevEscape = 1;
 
@@ -194186,26 +199848,27 @@ static void icuLoadCollation(
 ** Register the ICU extension functions with database db.
 */
 SQLITE_PRIVATE int sqlite3IcuInit(sqlite3 *db){
+# define SQLITEICU_EXTRAFLAGS (SQLITE_DETERMINISTIC|SQLITE_INNOCUOUS)
   static const struct IcuScalar {
     const char *zName;                        /* Function name */
     unsigned char nArg;                       /* Number of arguments */
-    unsigned short enc;                       /* Optimal text encoding */
+    unsigned int enc;                         /* Optimal text encoding */
     unsigned char iContext;                   /* sqlite3_user_data() context */
     void (*xFunc)(sqlite3_context*,int,sqlite3_value**);
   } scalars[] = {
-    {"icu_load_collation",  2, SQLITE_UTF8,                1, icuLoadCollation},
+    {"icu_load_collation",2,SQLITE_UTF8|SQLITE_DIRECTONLY,1, icuLoadCollation},
 #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_ICU)
-    {"regexp", 2, SQLITE_ANY|SQLITE_DETERMINISTIC,         0, icuRegexpFunc},
-    {"lower",  1, SQLITE_UTF16|SQLITE_DETERMINISTIC,       0, icuCaseFunc16},
-    {"lower",  2, SQLITE_UTF16|SQLITE_DETERMINISTIC,       0, icuCaseFunc16},
-    {"upper",  1, SQLITE_UTF16|SQLITE_DETERMINISTIC,       1, icuCaseFunc16},
-    {"upper",  2, SQLITE_UTF16|SQLITE_DETERMINISTIC,       1, icuCaseFunc16},
-    {"lower",  1, SQLITE_UTF8|SQLITE_DETERMINISTIC,        0, icuCaseFunc16},
-    {"lower",  2, SQLITE_UTF8|SQLITE_DETERMINISTIC,        0, icuCaseFunc16},
-    {"upper",  1, SQLITE_UTF8|SQLITE_DETERMINISTIC,        1, icuCaseFunc16},
-    {"upper",  2, SQLITE_UTF8|SQLITE_DETERMINISTIC,        1, icuCaseFunc16},
-    {"like",   2, SQLITE_UTF8|SQLITE_DETERMINISTIC,        0, icuLikeFunc},
-    {"like",   3, SQLITE_UTF8|SQLITE_DETERMINISTIC,        0, icuLikeFunc},
+    {"regexp", 2, SQLITE_ANY|SQLITEICU_EXTRAFLAGS,         0, icuRegexpFunc},
+    {"lower",  1, SQLITE_UTF16|SQLITEICU_EXTRAFLAGS,       0, icuCaseFunc16},
+    {"lower",  2, SQLITE_UTF16|SQLITEICU_EXTRAFLAGS,       0, icuCaseFunc16},
+    {"upper",  1, SQLITE_UTF16|SQLITEICU_EXTRAFLAGS,       1, icuCaseFunc16},
+    {"upper",  2, SQLITE_UTF16|SQLITEICU_EXTRAFLAGS,       1, icuCaseFunc16},
+    {"lower",  1, SQLITE_UTF8|SQLITEICU_EXTRAFLAGS,        0, icuCaseFunc16},
+    {"lower",  2, SQLITE_UTF8|SQLITEICU_EXTRAFLAGS,        0, icuCaseFunc16},
+    {"upper",  1, SQLITE_UTF8|SQLITEICU_EXTRAFLAGS,        1, icuCaseFunc16},
+    {"upper",  2, SQLITE_UTF8|SQLITEICU_EXTRAFLAGS,        1, icuCaseFunc16},
+    {"like",   2, SQLITE_UTF8|SQLITEICU_EXTRAFLAGS,        0, icuLikeFunc},
+    {"like",   3, SQLITE_UTF8|SQLITEICU_EXTRAFLAGS,        0, icuLikeFunc},
 #endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_ICU) */
   };
   int rc = SQLITE_OK;
@@ -196092,7 +201755,7 @@ static int rbuObjIterFirst(sqlite3rbu *p, RbuObjIter *pIter){
   rc = prepareFreeAndCollectError(p->dbRbu, &pIter->pTblIter, &p->zErrmsg,
     sqlite3_mprintf(
       "SELECT rbu_target_name(name, type='view') AS target, name "
-      "FROM sqlcipher_master "
+      "FROM sqlite_schema "
       "WHERE type IN ('table', 'view') AND target IS NOT NULL "
       " %s "
       "ORDER BY name"
@@ -196101,7 +201764,7 @@ static int rbuObjIterFirst(sqlite3rbu *p, RbuObjIter *pIter){
   if( rc==SQLITE_OK ){
     rc = prepareAndCollectError(p->dbMain, &pIter->pIdxIter, &p->zErrmsg,
         "SELECT name, rootpage, sql IS NULL OR substr(8, 6)=='UNIQUE' "
-        "  FROM main.sqlcipher_master "
+        "  FROM main.sqlite_schema "
         "  WHERE type='index' AND tbl_name = ?"
     );
   }
@@ -196273,12 +201936,12 @@ static void rbuFinalize(sqlite3rbu *p, sqlite3_stmt *pStmt){
 **
 ** ALGORITHM:
 **
-**   if( no entry exists in sqlite_master ){
+**   if( no entry exists in sqlite_schema ){
 **     return RBU_PK_NOTABLE
 **   }else if( sql for the entry starts with "CREATE VIRTUAL" ){
 **     return RBU_PK_VTAB
 **   }else if( "PRAGMA index_list()" for the table contains a "pk" index ){
-**     if( the index that is the pk exists in sqlite_master ){
+**     if( the index that is the pk exists in sqlite_schema ){
 **       *piPK = rootpage of that index.
 **       return RBU_PK_EXTERNAL
 **     }else{
@@ -196298,9 +201961,9 @@ static void rbuTableType(
   int *piPk
 ){
   /*
-  ** 0) SELECT count(*) FROM sqlite_master where name=%Q AND IsVirtual(%Q)
+  ** 0) SELECT count(*) FROM sqlite_schema where name=%Q AND IsVirtual(%Q)
   ** 1) PRAGMA index_list = ?
-  ** 2) SELECT count(*) FROM sqlite_master where name=%Q
+  ** 2) SELECT count(*) FROM sqlite_schema where name=%Q
   ** 3) PRAGMA table_info = ?
   */
   sqlite3_stmt *aStmt[4] = {0, 0, 0, 0};
@@ -196312,7 +201975,7 @@ static void rbuTableType(
   p->rc = prepareFreeAndCollectError(p->dbMain, &aStmt[0], &p->zErrmsg,
     sqlite3_mprintf(
           "SELECT (sql LIKE 'create virtual%%'), rootpage"
-          "  FROM sqlcipher_master"
+          "  FROM sqlite_schema"
           " WHERE name=%Q", zTab
   ));
   if( p->rc!=SQLITE_OK || sqlite3_step(aStmt[0])!=SQLITE_ROW ){
@@ -196335,7 +201998,7 @@ static void rbuTableType(
     if( zOrig && zIdx && zOrig[0]=='p' ){
       p->rc = prepareFreeAndCollectError(p->dbMain, &aStmt[2], &p->zErrmsg,
           sqlite3_mprintf(
-            "SELECT rootpage FROM sqlcipher_master WHERE name = %Q", zIdx
+            "SELECT rootpage FROM sqlite_schema WHERE name = %Q", zIdx
       ));
       if( p->rc==SQLITE_OK ){
         if( sqlite3_step(aStmt[2])==SQLITE_ROW ){
@@ -197155,7 +202818,7 @@ static void rbuCreateImposterTable2(sqlite3rbu *p, RbuObjIter *pIter){
     ** This is needed for the argument to "PRAGMA index_xinfo". Set
     ** zIdx to point to a nul-terminated string containing this name. */
     p->rc = prepareAndCollectError(p->dbMain, &pQuery, &p->zErrmsg,
-        "SELECT name FROM sqlcipher_master WHERE rootpage = ?"
+        "SELECT name FROM sqlite_schema WHERE rootpage = ?"
     );
     if( p->rc==SQLITE_OK ){
       sqlite3_bind_int(pQuery, 1, tnum);
@@ -197328,7 +202991,7 @@ static char *rbuObjIterGetIndexWhere(sqlite3rbu *p, RbuObjIter *pIter){
 
   if( rc==SQLITE_OK ){
     rc = prepareAndCollectError(p->dbMain, &pStmt, &p->zErrmsg,
-        "SELECT trim(sql) FROM sqlcipher_master WHERE type='index' AND name=?"
+        "SELECT trim(sql) FROM sqlite_schema WHERE type='index' AND name=?"
     );
   }
   if( rc==SQLITE_OK ){
@@ -197910,7 +203573,7 @@ static void rbuOpenDatabase(sqlite3rbu *p, int *pbRetry){
       int bOk = 0;
       sqlite3_stmt *pCnt = 0;
       p->rc = prepareAndCollectError(p->dbRbu, &pCnt, &p->zErrmsg,
-          "SELECT count(*) FROM stat.sqlcipher_master"
+          "SELECT count(*) FROM stat.sqlite_schema"
       );
       if( p->rc==SQLITE_OK
        && sqlite3_step(pCnt)==SQLITE_ROW
@@ -198014,7 +203677,7 @@ static void rbuOpenDatabase(sqlite3rbu *p, int *pbRetry){
   if( p->rc==SQLITE_OK ){
     p->rc = sqlite3_file_control(p->dbMain, "main", SQLITE_FCNTL_RBU, (void*)p);
   }
-  rbuMPrintfExec(p, p->dbMain, "SELECT * FROM sqlcipher_master");
+  rbuMPrintfExec(p, p->dbMain, "SELECT * FROM sqlite_schema");
 
   /* Mark the database file just opened as an RBU target database. If
   ** this call returns SQLITE_NOTFOUND, then the RBU vfs is not in use.
@@ -198107,7 +203770,7 @@ static void rbuSetupCheckpoint(sqlite3rbu *p, RbuState *pState){
   if( pState==0 ){
     p->eStage = 0;
     if( p->rc==SQLITE_OK ){
-      p->rc = sqlite3_exec(p->dbMain, "SELECT * FROM sqlcipher_master", 0, 0, 0);
+      p->rc = sqlite3_exec(p->dbMain, "SELECT * FROM sqlite_schema", 0, 0, 0);
     }
   }
 
@@ -198698,8 +204361,8 @@ static void rbuCreateTargetSchema(sqlite3rbu *p){
   p->rc = sqlite3_exec(p->dbMain, "PRAGMA writable_schema=1", 0,0, &p->zErrmsg);
   if( p->rc==SQLITE_OK ){
     p->rc = prepareAndCollectError(p->dbRbu, &pSql, &p->zErrmsg,
-      "SELECT sql FROM sqlcipher_master WHERE sql!='' AND rootpage!=0"
-      " AND name!='sqlcipher_sequence' "
+      "SELECT sql FROM sqlite_schema WHERE sql!='' AND rootpage!=0"
+      " AND name!='sqlite_sequence' "
       " ORDER BY type DESC"
     );
   }
@@ -198713,13 +204376,13 @@ static void rbuCreateTargetSchema(sqlite3rbu *p){
 
   if( p->rc==SQLITE_OK ){
     p->rc = prepareAndCollectError(p->dbRbu, &pSql, &p->zErrmsg,
-        "SELECT * FROM sqlcipher_master WHERE rootpage=0 OR rootpage IS NULL"
+        "SELECT * FROM sqlite_schema WHERE rootpage=0 OR rootpage IS NULL"
     );
   }
 
   if( p->rc==SQLITE_OK ){
     p->rc = prepareAndCollectError(p->dbMain, &pInsert, &p->zErrmsg,
-        "INSERT INTO sqlcipher_master VALUES(?,?,?,?,?)"
+        "INSERT INTO sqlite_schema VALUES(?,?,?,?,?)"
     );
   }
 
@@ -198982,7 +204645,7 @@ static void rbuIndexCntFunc(
   assert( nVal==1 );
 
   rc = prepareFreeAndCollectError(db, &pStmt, &zErrmsg,
-      sqlite3_mprintf("SELECT count(*) FROM sqlcipher_master "
+      sqlite3_mprintf("SELECT count(*) FROM sqlite_schema "
         "WHERE type='index' AND tbl_name = %Q", sqlite3_value_text(apVal[0]))
   );
   if( rc!=SQLITE_OK ){
@@ -199033,7 +204696,7 @@ static void rbuInitPhaseOneSteps(sqlite3rbu *p){
     ** occurs, nPhaseOneStep will be left set to -1. */
     if( p->rc==SQLITE_OK ){
       p->rc = prepareAndCollectError(p->dbRbu, &pStmt, &p->zErrmsg,
-          "SELECT 1 FROM sqlcipher_master WHERE tbl_name = 'rbu_count'"
+          "SELECT 1 FROM sqlite_schema WHERE tbl_name = 'rbu_count'"
       );
     }
     if( p->rc==SQLITE_OK ){
@@ -200054,33 +205717,6 @@ static int rbuVfsShmUnmap(sqlite3_file *pFile, int delFlag){
 }
 
 /*
-** A main database named zName has just been opened. The following
-** function returns a pointer to a buffer owned by SQLite that contains
-** the name of the *-wal file this db connection will use. SQLite
-** happens to pass a pointer to this buffer when using xAccess()
-** or xOpen() to operate on the *-wal file.
-*/
-static const char *rbuMainToWal(const char *zName, int flags){
-  int n = (int)strlen(zName);
-  const char *z = &zName[n];
-  if( flags & SQLITE_OPEN_URI ){
-    int odd = 0;
-    while( 1 ){
-      if( z[0]==0 ){
-        odd = 1 - odd;
-        if( odd && z[1]==0 ) break;
-      }
-      z++;
-    }
-    z += 2;
-  }else{
-    while( *z==0 ) z++;
-  }
-  z += (n + 8 + 1);
-  return z;
-}
-
-/*
 ** Open an rbu file handle.
 */
 static int rbuVfsOpen(
@@ -200128,7 +205764,7 @@ static int rbuVfsOpen(
       ** the name of the *-wal file this db connection will use. SQLite
       ** happens to pass a pointer to this buffer when using xAccess()
       ** or xOpen() to operate on the *-wal file.  */
-      pFd->zWal = rbuMainToWal(zName, flags);
+      pFd->zWal = sqlite3_filename_wal(zName);
     }
     else if( flags & SQLITE_OPEN_WAL ){
       rbu_file *pDb = rbuFindMaindb(pRbuVfs, zName, 0);
@@ -200143,7 +205779,7 @@ static int rbuVfsOpen(
           char *zCopy;
           if( rbuIsVacuum(pDb->pRbu) ){
             zBase = sqlite3_db_filename(pDb->pRbu->dbRbu, "main");
-            zBase = rbuMainToWal(zBase, SQLITE_OPEN_URI);
+            zBase = sqlite3_filename_wal(zBase);
           }
           nCopy = strlen(zBase);
           zCopy = sqlite3_malloc64(nCopy+2);
@@ -200463,7 +206099,7 @@ SQLITE_API sqlite3_int64 sqlite3rbu_temp_size(sqlite3rbu *pRbu){
 **
 ** This file contains an implementation of the "dbstat" virtual table.
 **
-** The dbstat virtual table is used to extract low-level formatting
+** The dbstat virtual table is used to extract low-level storage
 ** information from an SQLite database in order to implement the
 ** "sqlite3_analyzer" utility.  See the ../tool/spaceanal.tcl script
 ** for an example implementation.
@@ -200507,27 +206143,30 @@ SQLITE_API sqlite3_int64 sqlite3rbu_temp_size(sqlite3rbu *pRbu){
 **
 **      '/1c2/000/'               // Left-most child of 451st child of root
 */
-#define VTAB_SCHEMA                                                         \
-  "CREATE TABLE xx( "                                                       \
-  "  name       TEXT,             /* Name of table or index */"             \
-  "  path       TEXT,             /* Path to page from root */"             \
-  "  pageno     INTEGER,          /* Page number */"                        \
-  "  pagetype   TEXT,             /* 'internal', 'leaf' or 'overflow' */"   \
-  "  ncell      INTEGER,          /* Cells on page (0 for overflow) */"     \
-  "  payload    INTEGER,          /* Bytes of payload on this page */"      \
-  "  unused     INTEGER,          /* Bytes of unused space on this page */" \
-  "  mx_payload INTEGER,          /* Largest payload size of all cells */"  \
-  "  pgoffset   INTEGER,          /* Offset of page in file */"             \
-  "  pgsize     INTEGER,          /* Size of the page */"                   \
-  "  schema     TEXT HIDDEN       /* Database schema being analyzed */"     \
-  ");"
-
-
+static const char zDbstatSchema[] =
+  "CREATE TABLE x("
+  " name       TEXT,"          /*  0 Name of table or index */
+  " path       TEXT,"          /*  1 Path to page from root (NULL for agg) */
+  " pageno     INTEGER,"       /*  2 Page number (page count for aggregates) */
+  " pagetype   TEXT,"          /*  3 'internal', 'leaf', 'overflow', or NULL */
+  " ncell      INTEGER,"       /*  4 Cells on page (0 for overflow) */
+  " payload    INTEGER,"       /*  5 Bytes of payload on this page */
+  " unused     INTEGER,"       /*  6 Bytes of unused space on this page */
+  " mx_payload INTEGER,"       /*  7 Largest payload size of all cells */
+  " pgoffset   INTEGER,"       /*  8 Offset of page in file (NULL for agg) */
+  " pgsize     INTEGER,"       /*  9 Size of the page (sum for aggregate) */
+  " schema     TEXT HIDDEN,"   /* 10 Database schema being analyzed */
+  " aggregate  BOOLEAN HIDDEN" /* 11 aggregate info for each table */
+  ")"
+;
+
+/* Forward reference to data structured used in this module */
 typedef struct StatTable StatTable;
 typedef struct StatCursor StatCursor;
 typedef struct StatPage StatPage;
 typedef struct StatCell StatCell;
 
+/* Size information for a single cell within a btree page */
 struct StatCell {
   int nLocal;                     /* Bytes of local payload */
   u32 iChildPg;                   /* Child node (or 0 if this is a leaf) */
@@ -200537,10 +206176,11 @@ struct StatCell {
   int iOvfl;                      /* Iterates through aOvfl[] */
 };
 
+/* Size information for a single btree page */
 struct StatPage {
-  u32 iPgno;
-  DbPage *pPg;
-  int iCell;
+  u32 iPgno;                      /* Page number */
+  DbPage *pPg;                    /* Page content */
+  int iCell;                      /* Current cell */
 
   char *zPath;                    /* Path to this page */
 
@@ -200550,34 +206190,38 @@ struct StatPage {
   int nUnused;                    /* Number of unused bytes on page */
   StatCell *aCell;                /* Array of parsed cells */
   u32 iRightChildPg;              /* Right-child page number (or 0) */
-  int nMxPayload;                 /* Largest payload of any cell on this page */
+  int nMxPayload;                 /* Largest payload of any cell on the page */
 };
 
+/* The cursor for scanning the dbstat virtual table */
 struct StatCursor {
-  sqlite3_vtab_cursor base;
+  sqlite3_vtab_cursor base;       /* base class.  MUST BE FIRST! */
   sqlite3_stmt *pStmt;            /* Iterates through set of root pages */
-  int isEof;                      /* After pStmt has returned SQLITE_DONE */
+  u8 isEof;                       /* After pStmt has returned SQLITE_DONE */
+  u8 isAgg;                       /* Aggregate results for each table */
   int iDb;                        /* Schema used for this query */
 
-  StatPage aPage[32];
+  StatPage aPage[32];             /* Pages in path to current page */
   int iPage;                      /* Current entry in aPage[] */
 
   /* Values to return. */
+  u32 iPageno;                    /* Value of 'pageno' column */
   char *zName;                    /* Value of 'name' column */
   char *zPath;                    /* Value of 'path' column */
-  u32 iPageno;                    /* Value of 'pageno' column */
   char *zPagetype;                /* Value of 'pagetype' column */
+  int nPage;                      /* Number of pages in current btree */
   int nCell;                      /* Value of 'ncell' column */
-  int nPayload;                   /* Value of 'payload' column */
-  int nUnused;                    /* Value of 'unused' column */
   int nMxPayload;                 /* Value of 'mx_payload' column */
+  i64 nUnused;                    /* Value of 'unused' column */
+  i64 nPayload;                   /* Value of 'payload' column */
   i64 iOffset;                    /* Value of 'pgOffset' column */
-  int szPage;                     /* Value of 'pgSize' column */
+  i64 szPage;                     /* Value of 'pgSize' column */
 };
 
+/* An instance of the DBSTAT virtual table */
 struct StatTable {
-  sqlite3_vtab base;
-  sqlite3 *db;
+  sqlite3_vtab base;              /* base class.  MUST BE FIRST! */
+  sqlite3 *db;                    /* Database connection that owns this vtab */
   int iDb;                        /* Index of database to analyze */
 };
 
@@ -200586,7 +206230,7 @@ struct StatTable {
 #endif
 
 /*
-** Connect to or create a statvfs virtual table.
+** Connect to or create a new DBSTAT virtual table.
 */
 static int statConnect(
   sqlite3 *db,
@@ -200610,7 +206254,8 @@ static int statConnect(
   }else{
     iDb = 0;
   }
-  rc = sqlite3_declare_vtab(db, VTAB_SCHEMA);
+  sqlite3_vtab_config(db, SQLITE_VTAB_DIRECTONLY);
+  rc = sqlite3_declare_vtab(db, zDbstatSchema);
   if( rc==SQLITE_OK ){
     pTab = (StatTable *)sqlite3_malloc64(sizeof(StatTable));
     if( pTab==0 ) rc = SQLITE_NOMEM_BKPT;
@@ -200628,7 +206273,7 @@ static int statConnect(
 }
 
 /*
-** Disconnect from or destroy a statvfs virtual table.
+** Disconnect from or destroy the DBSTAT virtual table.
 */
 static int statDisconnect(sqlite3_vtab *pVtab){
   sqlite3_free(pVtab);
@@ -200636,14 +206281,20 @@ static int statDisconnect(sqlite3_vtab *pVtab){
 }
 
 /*
-** There is no "best-index". This virtual table always does a linear
-** scan.  However, a schema=? constraint should cause this table to
-** operate on a different database schema, so check for it.
+** Compute the best query strategy and return the result in idxNum.
 **
-** idxNum is normally 0, but will be 1 if a schema=? constraint exists.
+**   idxNum-Bit        Meaning
+**   ----------        ----------------------------------------------
+**      0x01           There is a schema=? term in the WHERE clause
+**      0x02           There is a name=? term in the WHERE clause
+**      0x04           There is an aggregate=? term in the WHERE clause
+**      0x08           Output should be ordered by name and path
 */
 static int statBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){
   int i;
+  int iSchema = -1;
+  int iName = -1;
+  int iAgg = -1;
 
   /* Look for a valid schema=? constraint.  If found, change the idxNum to
   ** 1 and request the value of that constraint be sent to xFilter.  And
@@ -200651,16 +206302,41 @@ static int statBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){
   ** used.
   */
   for(i=0; i<pIdxInfo->nConstraint; i++){
-    if( pIdxInfo->aConstraint[i].iColumn!=10 ) continue;
-    if( pIdxInfo->aConstraint[i].usable==0 ) return SQLITE_CONSTRAINT;
     if( pIdxInfo->aConstraint[i].op!=SQLITE_INDEX_CONSTRAINT_EQ ) continue;
-    pIdxInfo->idxNum = 1;
-    pIdxInfo->estimatedCost = 1.0;
-    pIdxInfo->aConstraintUsage[i].argvIndex = 1;
-    pIdxInfo->aConstraintUsage[i].omit = 1;
-    break;
+    if( pIdxInfo->aConstraint[i].usable==0 ){
+      /* Force DBSTAT table should always be the right-most table in a join */
+      return SQLITE_CONSTRAINT;
+    }
+    switch( pIdxInfo->aConstraint[i].iColumn ){
+      case 0: {    /* name */
+        iName = i;
+        break;
+      }
+      case 10: {   /* schema */
+        iSchema = i;
+        break;
+      }
+      case 11: {   /* aggregate */
+        iAgg = i;
+        break;
+      }
+    }
   }
-
+  i = 0;
+  if( iSchema>=0 ){
+    pIdxInfo->aConstraintUsage[iSchema].argvIndex = ++i;
+    pIdxInfo->aConstraintUsage[iSchema].omit = 1;
+    pIdxInfo->idxNum |= 0x01;
+  }
+  if( iName>=0 ){
+    pIdxInfo->aConstraintUsage[iName].argvIndex = ++i;
+    pIdxInfo->idxNum |= 0x02;
+  }
+  if( iAgg>=0 ){
+    pIdxInfo->aConstraintUsage[iAgg].argvIndex = ++i;
+    pIdxInfo->idxNum |= 0x04;
+  }
+  pIdxInfo->estimatedCost = 1.0;
 
   /* Records are always returned in ascending order of (name, path).
   ** If this will satisfy the client, set the orderByConsumed flag so that
@@ -200678,13 +206354,14 @@ static int statBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){
      )
   ){
     pIdxInfo->orderByConsumed = 1;
+    pIdxInfo->idxNum |= 0x08;
   }
 
   return SQLITE_OK;
 }
 
 /*
-** Open a new statvfs cursor.
+** Open a new DBSTAT cursor.
 */
 static int statOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){
   StatTable *pTab = (StatTable *)pVTab;
@@ -200734,8 +206411,18 @@ static void statResetCsr(StatCursor *pCsr){
   pCsr->isEof = 0;
 }
 
+/* Resize the space-used counters inside of the cursor */
+static void statResetCounts(StatCursor *pCsr){
+  pCsr->nCell = 0;
+  pCsr->nMxPayload = 0;
+  pCsr->nUnused = 0;
+  pCsr->nPayload = 0;
+  pCsr->szPage = 0;
+  pCsr->nPage = 0;
+}
+
 /*
-** Close a statvfs cursor.
+** Close a DBSTAT cursor.
 */
 static int statClose(sqlite3_vtab_cursor *pCursor){
   StatCursor *pCsr = (StatCursor *)pCursor;
@@ -200745,11 +206432,15 @@ static int statClose(sqlite3_vtab_cursor *pCursor){
   return SQLITE_OK;
 }
 
-static void getLocalPayload(
+/*
+** For a single cell on a btree page, compute the number of bytes of
+** content (payload) stored on that page.  That is to say, compute the
+** number of bytes of content not found on overflow pages.
+*/
+static int getLocalPayload(
   int nUsable,                    /* Usable bytes per page */
   u8 flags,                       /* Page flags */
-  int nTotal,                     /* Total record (payload) size */
-  int *pnLocal                    /* OUT: Bytes stored locally */
+  int nTotal                      /* Total record (payload) size */
 ){
   int nLocal;
   int nMinLocal;
@@ -200765,9 +206456,12 @@ static void getLocalPayload(
 
   nLocal = nMinLocal + (nTotal - nMinLocal) % (nUsable - 4);
   if( nLocal>nMaxLocal ) nLocal = nMinLocal;
-  *pnLocal = nLocal;
+  return nLocal;
 }
 
+/* Populate the StatPage object with information about the all
+** cells found on the page currently under analysis.
+*/
 static int statDecodePage(Btree *pBt, StatPage *p){
   int nUnused;
   int iOff;
@@ -200838,7 +206532,7 @@ static int statDecodePage(Btree *pBt, StatPage *p){
           iOff += sqlite3GetVarint(&aData[iOff], &dummy);
         }
         if( nPayload>(u32)p->nMxPayload ) p->nMxPayload = nPayload;
-        getLocalPayload(nUsable, p->flags, nPayload, &nLocal);
+        nLocal = getLocalPayload(nUsable, p->flags, nPayload);
         if( nLocal<0 ) goto statPageIsCorrupt;
         pCell->nLocal = nLocal;
         assert( nPayload>=(u32)nLocal );
@@ -200846,7 +206540,9 @@ static int statDecodePage(Btree *pBt, StatPage *p){
         if( nPayload>(u32)nLocal ){
           int j;
           int nOvfl = ((nPayload - nLocal) + nUsable-4 - 1) / (nUsable - 4);
-          if( iOff+nLocal>nUsable ) goto statPageIsCorrupt;
+          if( iOff+nLocal>nUsable || nPayload>0x7fffffff ){
+            goto statPageIsCorrupt;
+          }
           pCell->nLastOvfl = (nPayload-nLocal) - (nOvfl-1) * (nUsable-4);
           pCell->nOvfl = nOvfl;
           pCell->aOvfl = sqlite3_malloc64(sizeof(u32)*nOvfl);
@@ -200888,23 +206584,25 @@ static void statSizeAndOffset(StatCursor *pCsr){
   sqlite3_file *fd;
   sqlite3_int64 x[2];
 
-  /* The default page size and offset */
-  pCsr->szPage = sqlite3BtreeGetPageSize(pBt);
-  pCsr->iOffset = (i64)pCsr->szPage * (pCsr->iPageno - 1);
-
-  /* If connected to a ZIPVFS backend, override the page size and
-  ** offset with actual values obtained from ZIPVFS.
+  /* If connected to a ZIPVFS backend, find the page size and
+  ** offset from ZIPVFS.
   */
   fd = sqlite3PagerFile(pPager);
   x[0] = pCsr->iPageno;
   if( sqlite3OsFileControl(fd, 230440, &x)==SQLITE_OK ){
     pCsr->iOffset = x[0];
-    pCsr->szPage = (int)x[1];
+    pCsr->szPage += x[1];
+  }else{
+    /* Not ZIPVFS: The default page size and offset */
+    pCsr->szPage += sqlite3BtreeGetPageSize(pBt);
+    pCsr->iOffset = (i64)pCsr->szPage * (pCsr->iPageno - 1);
   }
 }
 
 /*
-** Move a statvfs cursor to the next entry in the file.
+** Move a DBSTAT cursor to the next entry.  Normally, the next
+** entry will be the next page, but in aggregated mode (pCsr->isAgg!=0),
+** the next entry is the next btree.
 */
 static int statNext(sqlite3_vtab_cursor *pCursor){
   int rc;
@@ -200920,6 +206618,8 @@ static int statNext(sqlite3_vtab_cursor *pCursor){
 
 statNextRestart:
   if( pCsr->aPage[0].pPg==0 ){
+    /* Start measuring space on the next btree */
+    statResetCounts(pCsr);
     rc = sqlite3_step(pCsr->pStmt);
     if( rc==SQLITE_ROW ){
       int nPage;
@@ -200932,44 +206632,47 @@ statNextRestart:
       rc = sqlite3PagerGet(pPager, iRoot, &pCsr->aPage[0].pPg, 0);
       pCsr->aPage[0].iPgno = iRoot;
       pCsr->aPage[0].iCell = 0;
-      pCsr->aPage[0].zPath = z = sqlite3_mprintf("/");
+      if( !pCsr->isAgg ){
+        pCsr->aPage[0].zPath = z = sqlite3_mprintf("/");
+        if( z==0 ) rc = SQLITE_NOMEM_BKPT;
+      }
       pCsr->iPage = 0;
-      if( z==0 ) rc = SQLITE_NOMEM_BKPT;
+      pCsr->nPage = 1;
     }else{
       pCsr->isEof = 1;
       return sqlite3_reset(pCsr->pStmt);
     }
   }else{
-
-    /* Page p itself has already been visited. */
+    /* Continue analyzing the btree previously started */
     StatPage *p = &pCsr->aPage[pCsr->iPage];
-
+    if( !pCsr->isAgg ) statResetCounts(pCsr);
     while( p->iCell<p->nCell ){
       StatCell *pCell = &p->aCell[p->iCell];
-      if( pCell->iOvfl<pCell->nOvfl ){
-        int nUsable;
+      while( pCell->iOvfl<pCell->nOvfl ){
+        int nUsable, iOvfl;
         sqlite3BtreeEnter(pBt);
         nUsable = sqlite3BtreeGetPageSize(pBt) -
                         sqlite3BtreeGetReserveNoMutex(pBt);
         sqlite3BtreeLeave(pBt);
-        pCsr->zName = (char *)sqlite3_column_text(pCsr->pStmt, 0);
-        pCsr->iPageno = pCell->aOvfl[pCell->iOvfl];
-        pCsr->zPagetype = "overflow";
-        pCsr->nCell = 0;
-        pCsr->nMxPayload = 0;
-        pCsr->zPath = z = sqlite3_mprintf(
-            "%s%.3x+%.6x", p->zPath, p->iCell, pCell->iOvfl
-        );
+        pCsr->nPage++;
+        statSizeAndOffset(pCsr);
         if( pCell->iOvfl<pCell->nOvfl-1 ){
-          pCsr->nUnused = 0;
-          pCsr->nPayload = nUsable - 4;
+          pCsr->nPayload += nUsable - 4;
         }else{
-          pCsr->nPayload = pCell->nLastOvfl;
-          pCsr->nUnused = nUsable - 4 - pCsr->nPayload;
+          pCsr->nPayload += pCell->nLastOvfl;
+          pCsr->nUnused += nUsable - 4 - pCell->nLastOvfl;
         }
+        iOvfl = pCell->iOvfl;
         pCell->iOvfl++;
-        statSizeAndOffset(pCsr);
-        return z==0 ? SQLITE_NOMEM_BKPT : SQLITE_OK;
+        if( !pCsr->isAgg ){
+          pCsr->zName = (char *)sqlite3_column_text(pCsr->pStmt, 0);
+          pCsr->iPageno = pCell->aOvfl[iOvfl];
+          pCsr->zPagetype = "overflow";
+          pCsr->zPath = z = sqlite3_mprintf(
+              "%s%.3x+%.6x", p->zPath, p->iCell, iOvfl
+          );
+          return z==0 ? SQLITE_NOMEM_BKPT : SQLITE_OK;
+        }
       }
       if( p->iRightChildPg ) break;
       p->iCell++;
@@ -200977,8 +206680,13 @@ statNextRestart:
 
     if( !p->iRightChildPg || p->iCell>p->nCell ){
       statClearPage(p);
-      if( pCsr->iPage==0 ) return statNext(pCursor);
-      pCsr->iPage--;
+      if( pCsr->iPage>0 ){
+        pCsr->iPage--;
+      }else if( pCsr->isAgg ){
+        /* label-statNext-done:  When computing aggregate space usage over
+        ** an entire btree, this is the exit point from this function */
+        return SQLITE_OK;
+      }
       goto statNextRestart; /* Tail recursion */
     }
     pCsr->iPage++;
@@ -200994,10 +206702,13 @@ statNextRestart:
       p[1].iPgno = p->aCell[p->iCell].iChildPg;
     }
     rc = sqlite3PagerGet(pPager, p[1].iPgno, &p[1].pPg, 0);
+    pCsr->nPage++;
     p[1].iCell = 0;
-    p[1].zPath = z = sqlite3_mprintf("%s%.3x/", p->zPath, p->iCell);
+    if( !pCsr->isAgg ){
+      p[1].zPath = z = sqlite3_mprintf("%s%.3x/", p->zPath, p->iCell);
+      if( z==0 ) rc = SQLITE_NOMEM_BKPT;
+    }
     p->iCell++;
-    if( z==0 ) rc = SQLITE_NOMEM_BKPT;
   }
 
 
@@ -201027,16 +206738,23 @@ statNextRestart:
           pCsr->zPagetype = "corrupted";
           break;
       }
-      pCsr->nCell = p->nCell;
-      pCsr->nUnused = p->nUnused;
-      pCsr->nMxPayload = p->nMxPayload;
-      pCsr->zPath = z = sqlite3_mprintf("%s", p->zPath);
-      if( z==0 ) rc = SQLITE_NOMEM_BKPT;
+      pCsr->nCell += p->nCell;
+      pCsr->nUnused += p->nUnused;
+      if( p->nMxPayload>pCsr->nMxPayload ) pCsr->nMxPayload = p->nMxPayload;
+      if( !pCsr->isAgg ){
+        pCsr->zPath = z = sqlite3_mprintf("%s", p->zPath);
+        if( z==0 ) rc = SQLITE_NOMEM_BKPT;
+      }
       nPayload = 0;
       for(i=0; i<p->nCell; i++){
         nPayload += p->aCell[i].nLocal;
       }
-      pCsr->nPayload = nPayload;
+      pCsr->nPayload += nPayload;
+
+      /* If computing aggregate space usage by btree, continue with the
+      ** next page.  The loop will exit via the return at label-statNext-done
+      */
+      if( pCsr->isAgg ) goto statNextRestart;
     }
   }
 
@@ -201048,6 +206766,10 @@ static int statEof(sqlite3_vtab_cursor *pCursor){
   return pCsr->isEof;
 }
 
+/* Initialize a cursor according to the query plan idxNum using the
+** arguments in argv[0].  See statBestIndex() for a description of the
+** meaning of the bits in idxNum.
+*/
 static int statFilter(
   sqlite3_vtab_cursor *pCursor,
   int idxNum, const char *idxStr,
@@ -201055,29 +206777,52 @@ static int statFilter(
 ){
   StatCursor *pCsr = (StatCursor *)pCursor;
   StatTable *pTab = (StatTable*)(pCursor->pVtab);
-  char *zSql;
-  int rc = SQLITE_OK;
+  sqlite3_str *pSql;      /* Query of btrees to analyze */
+  char *zSql;             /* String value of pSql */
+  int iArg = 0;           /* Count of argv[] parameters used so far */
+  int rc = SQLITE_OK;     /* Result of this operation */
+  const char *zName = 0;  /* Only provide analysis of this table */
 
-  if( idxNum==1 ){
-    const char *zDbase = (const char*)sqlite3_value_text(argv[0]);
+  statResetCsr(pCsr);
+  sqlite3_finalize(pCsr->pStmt);
+  pCsr->pStmt = 0;
+  if( idxNum & 0x01 ){
+    /* schema=? constraint is present.  Get its value */
+    const char *zDbase = (const char*)sqlite3_value_text(argv[iArg++]);
     pCsr->iDb = sqlite3FindDbName(pTab->db, zDbase);
     if( pCsr->iDb<0 ){
-      sqlite3_free(pCursor->pVtab->zErrMsg);
-      pCursor->pVtab->zErrMsg = sqlite3_mprintf("no such schema: %s", zDbase);
-      return pCursor->pVtab->zErrMsg ? SQLITE_ERROR : SQLITE_NOMEM_BKPT;
+      pCsr->iDb = 0;
+      pCsr->isEof = 1;
+      return SQLITE_OK;
     }
   }else{
     pCsr->iDb = pTab->iDb;
   }
-  statResetCsr(pCsr);
-  sqlite3_finalize(pCsr->pStmt);
-  pCsr->pStmt = 0;
-  zSql = sqlite3_mprintf(
-      "SELECT 'sqlcipher_master' AS name, 1 AS rootpage, 'table' AS type"
-      "  UNION ALL  "
-      "SELECT name, rootpage, type"
-      "  FROM \"%w\".sqlcipher_master WHERE rootpage!=0"
-      "  ORDER BY name", pTab->db->aDb[pCsr->iDb].zDbSName);
+  if( idxNum & 0x02 ){
+    /* name=? constraint is present */
+    zName = (const char*)sqlite3_value_text(argv[iArg++]);
+  }
+  if( idxNum & 0x04 ){
+    /* aggregate=? constraint is present */
+    pCsr->isAgg = sqlite3_value_double(argv[iArg++])!=0.0;
+  }else{
+    pCsr->isAgg = 0;
+  }
+  pSql = sqlite3_str_new(pTab->db);
+  sqlite3_str_appendf(pSql,
+      "SELECT * FROM ("
+        "SELECT 'sqlite_schema' AS name,1 AS rootpage,'table' AS type"
+        " UNION ALL "
+        "SELECT name,rootpage,type"
+        " FROM \"%w\".sqlite_schema WHERE rootpage!=0)",
+      pTab->db->aDb[pCsr->iDb].zDbSName);
+  if( zName ){
+    sqlite3_str_appendf(pSql, "WHERE name=%Q", zName);
+  }
+  if( idxNum & 0x08 ){
+    sqlite3_str_appendf(pSql, " ORDER BY name");
+  }
+  zSql = sqlite3_str_finish(pSql);
   if( zSql==0 ){
     return SQLITE_NOMEM_BKPT;
   }else{
@@ -201102,13 +206847,21 @@ static int statColumn(
       sqlite3_result_text(ctx, pCsr->zName, -1, SQLITE_TRANSIENT);
       break;
     case 1:            /* path */
-      sqlite3_result_text(ctx, pCsr->zPath, -1, SQLITE_TRANSIENT);
+      if( !pCsr->isAgg ){
+        sqlite3_result_text(ctx, pCsr->zPath, -1, SQLITE_TRANSIENT);
+      }
       break;
     case 2:            /* pageno */
-      sqlite3_result_int64(ctx, pCsr->iPageno);
+      if( pCsr->isAgg ){
+        sqlite3_result_int64(ctx, pCsr->nPage);
+      }else{
+        sqlite3_result_int64(ctx, pCsr->iPageno);
+      }
       break;
     case 3:            /* pagetype */
-      sqlite3_result_text(ctx, pCsr->zPagetype, -1, SQLITE_STATIC);
+      if( !pCsr->isAgg ){
+        sqlite3_result_text(ctx, pCsr->zPagetype, -1, SQLITE_STATIC);
+      }
       break;
     case 4:            /* ncell */
       sqlite3_result_int(ctx, pCsr->nCell);
@@ -201123,17 +206876,23 @@ static int statColumn(
       sqlite3_result_int(ctx, pCsr->nMxPayload);
       break;
     case 8:            /* pgoffset */
-      sqlite3_result_int64(ctx, pCsr->iOffset);
+      if( !pCsr->isAgg ){
+        sqlite3_result_int64(ctx, pCsr->iOffset);
+      }
       break;
     case 9:            /* pgsize */
       sqlite3_result_int(ctx, pCsr->szPage);
       break;
-    default: {          /* schema */
+    case 10: {         /* schema */
       sqlite3 *db = sqlite3_context_db_handle(ctx);
       int iDb = pCsr->iDb;
       sqlite3_result_text(ctx, db->aDb[iDb].zDbSName, -1, SQLITE_STATIC);
       break;
     }
+    default: {         /* aggregate */
+      sqlite3_result_int(ctx, pCsr->isAgg);
+      break;
+    }
   }
   return SQLITE_OK;
 }
@@ -201257,6 +207016,7 @@ static int dbpageConnect(
   DbpageTable *pTab = 0;
   int rc = SQLITE_OK;
 
+  sqlite3_vtab_config(db, SQLITE_VTAB_DIRECTONLY);
   rc = sqlite3_declare_vtab(db,
           "CREATE TABLE x(pgno INTEGER PRIMARY KEY, data BLOB, schema HIDDEN)");
   if( rc==SQLITE_OK ){
@@ -202583,7 +208343,7 @@ static int sessionTableInfo(
   assert( pazCol && pabPK );
 
   nThis = sqlite3Strlen30(zThis);
-  if( nThis==12 && 0==sqlite3_stricmp("sqlcipher_stat1", zThis) ){
+  if( nThis==12 && 0==sqlite3_stricmp("sqlite_stat1", zThis) ){
     rc = sqlite3_table_column_metadata(db, zDb, zThis, 0, 0, 0, 0, 0, 0);
     if( rc==SQLITE_OK ){
       /* For sqlite_stat1, pretend that (tbl,idx) is the PRIMARY KEY. */
@@ -202691,7 +208451,7 @@ static int sessionInitTable(sqlite3_session *pSession, SessionTable *pTab){
           break;
         }
       }
-      if( 0==sqlite3_stricmp("sqlcipher_stat1", pTab->zName) ){
+      if( 0==sqlite3_stricmp("sqlite_stat1", pTab->zName) ){
         pTab->bStat1 = 1;
       }
     }
@@ -203823,7 +209583,7 @@ static int sessionSelectStmt(
 
   if( 0==sqlite3_stricmp("sqlite_stat1", zTab) ){
     zSql = sqlite3_mprintf(
-        "SELECT tbl, ?2, stat FROM %Q.sqlcipher_stat1 WHERE tbl IS ?1 AND "
+        "SELECT tbl, ?2, stat FROM %Q.sqlite_stat1 WHERE tbl IS ?1 AND "
         "idx IS (CASE WHEN ?2=X'' THEN NULL ELSE ?2 END)", zDb
     );
     if( zSql==0 ) rc = SQLITE_NOMEM;
@@ -204558,8 +210318,13 @@ static int sessionChangesetReadTblhdr(sqlite3_changeset_iter *p){
   }
 
   p->apValue = (sqlite3_value**)p->tblhdr.aBuf;
-  p->abPK = (u8*)&p->apValue[p->nCol*2];
-  p->zTab = (char*)&p->abPK[p->nCol];
+  if( p->apValue==0 ){
+    p->abPK = 0;
+    p->zTab = 0;
+  }else{
+    p->abPK = (u8*)&p->apValue[p->nCol*2];
+    p->zTab = p->abPK ? (char*)&p->abPK[p->nCol] : 0;
+  }
   return (p->rc = rc);
 }
 
@@ -205081,6 +210846,7 @@ struct SessionApplyCtx {
   u8 *abPK;                       /* Boolean array - true if column is in PK */
   int bStat1;                     /* True if table is sqlite_stat1 */
   int bDeferConstraints;          /* True to defer constraints */
+  int bInvertConstraints;         /* Invert when iterating constraints buffer */
   SessionBuffer constraints;      /* Deferred constraints are stored here */
   SessionBuffer rebase;           /* Rebase information (if any) here */
   u8 bRebaseStarted;              /* If table header is already in rebase */
@@ -205115,7 +210881,7 @@ static int sessionDeleteRow(
   SessionBuffer buf = {0, 0, 0};
   int nPk = 0;
 
-  sessionAppendStr(&buf, "DELETE FROM ", &rc);
+  sessionAppendStr(&buf, "DELETE FROM main.", &rc);
   sessionAppendIdent(&buf, zTab, &rc);
   sessionAppendStr(&buf, " WHERE ", &rc);
 
@@ -205198,7 +210964,7 @@ static int sessionUpdateRow(
   SessionBuffer buf = {0, 0, 0};
 
   /* Append "UPDATE tbl SET " */
-  sessionAppendStr(&buf, "UPDATE ", &rc);
+  sessionAppendStr(&buf, "UPDATE main.", &rc);
   sessionAppendIdent(&buf, zTab, &rc);
   sessionAppendStr(&buf, " SET ", &rc);
 
@@ -205325,17 +211091,17 @@ static int sessionPrepare(sqlite3 *db, sqlite3_stmt **pp, const char *zSql){
 ** other tables.
 */
 static int sessionStat1Sql(sqlite3 *db, SessionApplyCtx *p){
-  int rc = sessionSelectRow(db, "sqlcipher_stat1", p);
+  int rc = sessionSelectRow(db, "sqlite_stat1", p);
   if( rc==SQLITE_OK ){
     rc = sessionPrepare(db, &p->pInsert,
-        "INSERT INTO main.sqlcipher_stat1 VALUES(?1, "
+        "INSERT INTO main.sqlite_stat1 VALUES(?1, "
         "CASE WHEN length(?2)=0 AND typeof(?2)='blob' THEN NULL ELSE ?2 END, "
         "?3)"
     );
   }
   if( rc==SQLITE_OK ){
     rc = sessionPrepare(db, &p->pUpdate,
-        "UPDATE main.sqlcipher_stat1 SET "
+        "UPDATE main.sqlite_stat1 SET "
         "tbl = CASE WHEN ?2 THEN ?3 ELSE tbl END, "
         "idx = CASE WHEN ?5 THEN ?6 ELSE idx END, "
         "stat = CASE WHEN ?8 THEN ?9 ELSE stat END  "
@@ -205346,7 +211112,7 @@ static int sessionStat1Sql(sqlite3 *db, SessionApplyCtx *p){
   }
   if( rc==SQLITE_OK ){
     rc = sessionPrepare(db, &p->pDelete,
-        "DELETE FROM main.sqlcipher_stat1 WHERE tbl=?1 AND idx IS "
+        "DELETE FROM main.sqlite_stat1 WHERE tbl=?1 AND idx IS "
         "CASE WHEN length(?2)=0 AND typeof(?2)='blob' THEN NULL ELSE ?2 END "
         "AND (?4 OR stat IS ?3)"
     );
@@ -205853,7 +211619,9 @@ static int sessionRetryConstraints(
     SessionBuffer cons = pApply->constraints;
     memset(&pApply->constraints, 0, sizeof(SessionBuffer));
 
-    rc = sessionChangesetStart(&pIter2, 0, 0, cons.nBuf, cons.aBuf, 0);
+    rc = sessionChangesetStart(
+        &pIter2, 0, 0, cons.nBuf, cons.aBuf, pApply->bInvertConstraints
+    );
     if( rc==SQLITE_OK ){
       size_t nByte = 2*pApply->nCol*sizeof(sqlite3_value*);
       int rc2;
@@ -205920,6 +211688,7 @@ static int sessionChangesetApply(
   pIter->in.bNoDiscard = 1;
   memset(&sApply, 0, sizeof(sApply));
   sApply.bRebase = (ppRebase && pnRebase);
+  sApply.bInvertConstraints = !!(flags & SQLITE_CHANGESETAPPLY_INVERT);
   sqlite3_mutex_enter(sqlite3_db_mutex(db));
   if( (flags & SQLITE_CHANGESETAPPLY_NOSAVEPOINT)==0 ){
     rc = sqlite3_exec(db, "SAVEPOINT changeset_apply", 0, 0, 0);
@@ -206007,7 +211776,7 @@ static int sessionChangesetApply(
         }
         else{
           sApply.nCol = nCol;
-          if( 0==sqlite3_stricmp(zTab, "sqlcipher_stat1") ){
+          if( 0==sqlite3_stricmp(zTab, "sqlite_stat1") ){
             if( (rc = sessionStat1Sql(db, &sApply) ) ){
               break;
             }
@@ -207245,7 +213014,7 @@ struct Fts5PhraseIter {
 **
 ** xSetAuxdata(pFts5, pAux, xDelete)
 **
-**   Save the pointer passed as the second argument as the extension functions
+**   Save the pointer passed as the second argument as the extension function's
 **   "auxiliary data". The pointer may then be retrieved by the current or any
 **   future invocation of the same fts5 extension function made as part of
 **   the same MATCH query using the xGetAuxdata() API.
@@ -207487,8 +213256,8 @@ struct Fts5ExtensionApi {
 **
 **   There are several ways to approach this in FTS5:
 **
-**   <ol><li> By mapping all synonyms to a single token. In this case, the
-**            In the above example, this means that the tokenizer returns the
+**   <ol><li> By mapping all synonyms to a single token. In this case, using
+**            the above example, this means that the tokenizer returns the
 **            same token for inputs "first" and "1st". Say that token is in
 **            fact "first", so that when the user inserts the document "I won
 **            1st place" entries are added to the index for tokens "i", "won",
@@ -207723,6 +213492,11 @@ typedef sqlite3_uint64 u64;
 */
 #define FTS5_MAX_PREFIX_INDEXES 31
 
+/*
+** Maximum segments permitted in a single index
+*/
+#define FTS5_MAX_SEGMENT 2000
+
 #define FTS5_DEFAULT_NEARDIST 10
 #define FTS5_DEFAULT_RANK     "bm25"
 
@@ -208080,6 +213854,11 @@ static int sqlite3Fts5IterNextFrom(Fts5IndexIter*, i64 iMatch);
 static void sqlite3Fts5IterClose(Fts5IndexIter*);
 
 /*
+** Close the reader blob handle, if it is open.
+*/
+static void sqlite3Fts5IndexCloseReader(Fts5Index*);
+
+/*
 ** This interface is used by the fts5vocab module.
 */
 static const char *sqlite3Fts5IterTerm(Fts5IndexIter*, int*);
@@ -208639,6 +214418,7 @@ typedef union {
 #define sqlite3Fts5ParserCTX_STORE
 #define fts5YYNSTATE             35
 #define fts5YYNRULE              28
+#define fts5YYNRULE_WITH_ACTION  28
 #define fts5YYNFTS5TOKEN             16
 #define fts5YY_MAX_SHIFT         34
 #define fts5YY_MIN_SHIFTREDUCE   52
@@ -209468,12 +215248,15 @@ static fts5YYACTIONTYPE fts5yy_reduce(
   if( fts5yyTraceFILE && fts5yyruleno<(int)(sizeof(fts5yyRuleName)/sizeof(fts5yyRuleName[0])) ){
     fts5yysize = fts5yyRuleInfoNRhs[fts5yyruleno];
     if( fts5yysize ){
-      fprintf(fts5yyTraceFILE, "%sReduce %d [%s], go to state %d.\n",
+      fprintf(fts5yyTraceFILE, "%sReduce %d [%s]%s, pop back to state %d.\n",
         fts5yyTracePrompt,
-        fts5yyruleno, fts5yyRuleName[fts5yyruleno], fts5yymsp[fts5yysize].stateno);
+        fts5yyruleno, fts5yyRuleName[fts5yyruleno],
+        fts5yyruleno<fts5YYNRULE_WITH_ACTION ? "" : " without external action",
+        fts5yymsp[fts5yysize].stateno);
     }else{
-      fprintf(fts5yyTraceFILE, "%sReduce %d [%s].\n",
-        fts5yyTracePrompt, fts5yyruleno, fts5yyRuleName[fts5yyruleno]);
+      fprintf(fts5yyTraceFILE, "%sReduce %d [%s]%s.\n",
+        fts5yyTracePrompt, fts5yyruleno, fts5yyRuleName[fts5yyruleno],
+        fts5yyruleno<fts5YYNRULE_WITH_ACTION ? "" : " without external action");
     }
   }
 #endif /* NDEBUG */
@@ -209955,8 +215738,8 @@ static int sqlite3Fts5ParserFallback(int iToken){
   return fts5yyFallback[iToken];
 #else
   (void)iToken;
-#endif
   return 0;
+#endif
 }
 
 /*
@@ -211105,7 +216888,7 @@ static void sqlite3Fts5TermsetFree(Fts5Termset *p){
 #define FTS5_DEFAULT_HASHSIZE    (1024*1024)
 
 /* Maximum allowed page size */
-#define FTS5_MAX_PAGE_SIZE (128*1024)
+#define FTS5_MAX_PAGE_SIZE (64*1024)
 
 static int fts5_iswhitespace(char x){
   return (x==' ');
@@ -211232,7 +217015,7 @@ static int fts5Dequote(char *z){
   assert( q=='[' || q=='\'' || q=='"' || q=='`' );
   if( q=='[' ) q = ']';
 
-  while( ALWAYS(z[iIn]) ){
+  while( z[iIn] ){
     if( z[iIn]==q ){
       if( z[iIn+1]!=q ){
         /* Character iIn was the close quote. */
@@ -211910,7 +217693,7 @@ static int sqlite3Fts5ConfigSetValue(
     if( SQLITE_INTEGER==sqlite3_value_numeric_type(pVal) ){
       pgsz = sqlite3_value_int(pVal);
     }
-    if( pgsz<=0 || pgsz>FTS5_MAX_PAGE_SIZE ){
+    if( pgsz<32 || pgsz>FTS5_MAX_PAGE_SIZE ){
       *pbBadkey = 1;
     }else{
       pConfig->pgsz = pgsz;
@@ -211963,6 +217746,7 @@ static int sqlite3Fts5ConfigSetValue(
       *pbBadkey = 1;
     }else{
       if( nCrisisMerge<=1 ) nCrisisMerge = FTS5_DEFAULT_CRISISMERGE;
+      if( nCrisisMerge>=FTS5_MAX_SEGMENT ) nCrisisMerge = FTS5_MAX_SEGMENT-1;
       pConfig->nCrisisMerge = nCrisisMerge;
     }
   }
@@ -214560,10 +220344,12 @@ static void fts5ExprFunction(
   azConfig[1] = "main";
   azConfig[2] = "tbl";
   for(i=3; iArg<nArg; iArg++){
-    azConfig[i++] = (const char*)sqlite3_value_text(apVal[iArg]);
+    const char *z = (const char*)sqlite3_value_text(apVal[iArg]);
+    azConfig[i++] = (z ? z : "");
   }
 
   zExpr = (const char*)sqlite3_value_text(apVal[0]);
+  if( zExpr==0 ) zExpr = "";
 
   rc = sqlite3Fts5ConfigParse(pGlobal, db, nConfig, azConfig, &pConfig, &zErr);
   if( rc==SQLITE_OK ){
@@ -215734,11 +221520,6 @@ static void sqlite3Fts5HashScanEntry(
 #define FTS5_SEGMENT_ROWID(segid, pgno)       fts5_dri(segid, 0, 0, pgno)
 #define FTS5_DLIDX_ROWID(segid, height, pgno) fts5_dri(segid, 1, height, pgno)
 
-/*
-** Maximum segments permitted in a single index
-*/
-#define FTS5_MAX_SEGMENT 2000
-
 #ifdef SQLITE_DEBUG
 static int sqlite3Fts5Corrupt() { return SQLITE_CORRUPT_VTAB; }
 #endif
@@ -216114,7 +221895,7 @@ static int fts5LeafFirstTermOff(Fts5Data *pLeaf){
 /*
 ** Close the read-only blob handle, if it is open.
 */
-static void fts5CloseReader(Fts5Index *p){
+static void sqlite3Fts5IndexCloseReader(Fts5Index *p){
   if( p->pReader ){
     sqlite3_blob *pReader = p->pReader;
     p->pReader = 0;
@@ -216143,7 +221924,7 @@ static Fts5Data *fts5DataRead(Fts5Index *p, i64 iRowid){
       assert( p->pReader==0 );
       p->pReader = pBlob;
       if( rc!=SQLITE_OK ){
-        fts5CloseReader(p);
+        sqlite3Fts5IndexCloseReader(p);
       }
       if( rc==SQLITE_ABORT ) rc = SQLITE_OK;
     }
@@ -217821,11 +223602,11 @@ static void fts5LeafSeek(
   }
 
  search_success:
-  pIter->iLeafOffset = iOff + nNew;
-  if( pIter->iLeafOffset>n || nNew<1 ){
+  if( (i64)iOff+nNew>n || nNew<1 ){
     p->rc = FTS5_CORRUPT;
     return;
   }
+  pIter->iLeafOffset = iOff + nNew;
   pIter->iTermLeafOffset = pIter->iLeafOffset;
   pIter->iTermLeafPgno = pIter->iLeafPgno;
 
@@ -220704,7 +226485,7 @@ static int sqlite3Fts5IndexBeginWrite(Fts5Index *p, int bDelete, i64 iRowid){
 static int sqlite3Fts5IndexSync(Fts5Index *p){
   assert( p->rc==SQLITE_OK );
   fts5IndexFlush(p);
-  fts5CloseReader(p);
+  sqlite3Fts5IndexCloseReader(p);
   return fts5IndexReturn(p);
 }
 
@@ -220715,7 +226496,7 @@ static int sqlite3Fts5IndexSync(Fts5Index *p){
 ** records must be invalidated.
 */
 static int sqlite3Fts5IndexRollback(Fts5Index *p){
-  fts5CloseReader(p);
+  sqlite3Fts5IndexCloseReader(p);
   fts5IndexDiscardData(p);
   fts5StructureInvalidate(p);
   /* assert( p->rc==SQLITE_OK ); */
@@ -220730,6 +226511,7 @@ static int sqlite3Fts5IndexRollback(Fts5Index *p){
 static int sqlite3Fts5IndexReinit(Fts5Index *p){
   Fts5Structure s;
   fts5StructureInvalidate(p);
+  fts5IndexDiscardData(p);
   memset(&s, 0, sizeof(Fts5Structure));
   fts5DataWrite(p, FTS5_AVERAGES_ROWID, (const u8*)"", 0);
   fts5StructureWrite(p, &s);
@@ -220817,9 +226599,13 @@ static int sqlite3Fts5IndexCharlenToBytelen(
   for(i=0; i<nChar; i++){
     if( n>=nByte ) return 0;      /* Input contains fewer than nChar chars */
     if( (unsigned char)p[n++]>=0xc0 ){
+      if( n>=nByte ) return 0;
       while( (p[n] & 0xc0)==0x80 ){
         n++;
-        if( n>=nByte ) break;
+        if( n>=nByte ){
+          if( i+1==nChar ) break;
+          return 0;
+        }
       }
     }
   }
@@ -220955,7 +226741,7 @@ static int sqlite3Fts5IndexQuery(
     if( p->rc ){
       sqlite3Fts5IterClose((Fts5IndexIter*)pRet);
       pRet = 0;
-      fts5CloseReader(p);
+      sqlite3Fts5IndexCloseReader(p);
     }
 
     *ppIter = (Fts5IndexIter*)pRet;
@@ -221028,7 +226814,7 @@ static void sqlite3Fts5IterClose(Fts5IndexIter *pIndexIter){
     Fts5Iter *pIter = (Fts5Iter*)pIndexIter;
     Fts5Index *pIndex = pIter->pIndex;
     fts5MultiIterFree(pIter);
-    fts5CloseReader(pIndex);
+    sqlite3Fts5IndexCloseReader(pIndex);
   }
 }
 
@@ -221221,6 +227007,37 @@ static int fts5QueryCksum(
   return rc;
 }
 
+/*
+** Check if buffer z[], size n bytes, contains as series of valid utf-8
+** encoded codepoints. If so, return 0. Otherwise, if the buffer does not
+** contain valid utf-8, return non-zero.
+*/
+static int fts5TestUtf8(const char *z, int n){
+  int i = 0;
+  assert_nc( n>0 );
+  while( i<n ){
+    if( (z[i] & 0x80)==0x00 ){
+      i++;
+    }else
+    if( (z[i] & 0xE0)==0xC0 ){
+      if( i+1>=n || (z[i+1] & 0xC0)!=0x80 ) return 1;
+      i += 2;
+    }else
+    if( (z[i] & 0xF0)==0xE0 ){
+      if( i+2>=n || (z[i+1] & 0xC0)!=0x80 || (z[i+2] & 0xC0)!=0x80 ) return 1;
+      i += 3;
+    }else
+    if( (z[i] & 0xF8)==0xF0 ){
+      if( i+3>=n || (z[i+1] & 0xC0)!=0x80 || (z[i+2] & 0xC0)!=0x80 ) return 1;
+      if( (z[i+2] & 0xC0)!=0x80 ) return 1;
+      i += 3;
+    }else{
+      return 1;
+    }
+  }
+
+  return 0;
+}
 
 /*
 ** This function is also purely an internal test. It does not contribute to
@@ -221261,8 +227078,14 @@ static void fts5TestTerm(
     ** This check may only be performed if the hash table is empty. This
     ** is because the hash table only supports a single scan query at
     ** a time, and the multi-iter loop from which this function is called
-    ** is already performing such a scan. */
-    if( p->nPendingData==0 ){
+    ** is already performing such a scan.
+    **
+    ** Also only do this if buffer zTerm contains nTerm bytes of valid
+    ** utf-8. Otherwise, the last part of the buffer contents might contain
+    ** a non-utf-8 sequence that happens to be a prefix of a valid utf-8
+    ** character stored in the main fts index, which will cause the
+    ** test to fail.  */
+    if( p->nPendingData==0 && 0==fts5TestUtf8(zTerm, nTerm) ){
       if( iIdx>0 && rc==SQLITE_OK ){
         int f = flags|FTS5INDEX_QUERY_TEST_NOIDX;
         ck2 = 0;
@@ -221385,7 +227208,8 @@ static void fts5IndexIntegrityCheckSegment(
   if( pSeg->pgnoFirst==0 ) return;
 
   fts5IndexPrepareStmt(p, &pStmt, sqlite3_mprintf(
-      "SELECT segid, term, (pgno>>1), (pgno&1) FROM %Q.'%q_idx' WHERE segid=%d",
+      "SELECT segid, term, (pgno>>1), (pgno&1) FROM %Q.'%q_idx' WHERE segid=%d "
+      "ORDER BY 1, 2",
       pConfig->zDb, pConfig->zName, pSeg->iSegid
   ));
 
@@ -221394,8 +227218,8 @@ static void fts5IndexIntegrityCheckSegment(
     i64 iRow;                     /* Rowid for this leaf */
     Fts5Data *pLeaf;              /* Data for this leaf */
 
+    const char *zIdxTerm = (const char*)sqlite3_column_blob(pStmt, 1);
     int nIdxTerm = sqlite3_column_bytes(pStmt, 1);
-    const char *zIdxTerm = (const char*)sqlite3_column_text(pStmt, 1);
     int iIdxLeaf = sqlite3_column_int(pStmt, 2);
     int bIdxDlidx = sqlite3_column_int(pStmt, 3);
 
@@ -222376,7 +228200,10 @@ static void fts5CheckTransactionState(Fts5FullTable *p, int op, int iSavepoint){
     case FTS5_ROLLBACKTO:
       assert( p->ts.eState==1 );
       assert( iSavepoint>=-1 );
-      assert( iSavepoint<=p->ts.iSavepoint );
+      /* The following assert() can fail if another vtab strikes an error
+      ** within an xSavepoint() call then SQLite calls xRollbackTo() - without
+      ** having called xSavepoint() on this vtab.  */
+      /* assert( iSavepoint<=p->ts.iSavepoint ); */
       p->ts.iSavepoint = iSavepoint;
       break;
   }
@@ -222831,6 +228658,7 @@ static void fts5FreeCursorComponents(Fts5Cursor *pCsr){
     sqlite3_free(pCsr->zRankArgs);
   }
 
+  sqlite3Fts5IndexCloseReader(pTab->p.pIndex);
   memset(&pCsr->ePlan, 0, sizeof(Fts5Cursor) - ((u8*)&pCsr->ePlan - (u8*)pCsr));
 }
 
@@ -222981,15 +228809,24 @@ static int fts5NextMethod(sqlite3_vtab_cursor *pCursor){
         break;
       }
 
-      default:
+      default: {
+        Fts5Config *pConfig = ((Fts5Table*)pCursor->pVtab)->pConfig;
+        pConfig->bLock++;
         rc = sqlite3_step(pCsr->pStmt);
+        pConfig->bLock--;
         if( rc!=SQLITE_ROW ){
           CsrFlagSet(pCsr, FTS5CSR_EOF);
           rc = sqlite3_reset(pCsr->pStmt);
+          if( rc!=SQLITE_OK ){
+            pCursor->pVtab->zErrMsg = sqlite3_mprintf(
+                "%s", sqlite3_errmsg(pConfig->db)
+            );
+          }
         }else{
           rc = SQLITE_OK;
         }
         break;
+      }
     }
   }
 
@@ -223274,6 +229111,13 @@ static int fts5FilterMethod(
   int iIdxStr = 0;
   Fts5Expr *pExpr = 0;
 
+  if( pConfig->bLock ){
+    pTab->p.base.zErrMsg = sqlite3_mprintf(
+        "recursively defined fts5 content table"
+    );
+    return SQLITE_ERROR;
+  }
+
   if( pCsr->ePlan ){
     fts5FreeCursorComponents(pCsr);
     memset(&pCsr->ePlan, 0, sizeof(Fts5Cursor) - ((u8*)&pCsr->ePlan-(u8*)pCsr));
@@ -223494,10 +229338,13 @@ static int fts5SeekCursor(Fts5Cursor *pCsr, int bErrormsg){
   }
 
   if( rc==SQLITE_OK && CsrFlagTest(pCsr, FTS5CSR_REQUIRE_CONTENT) ){
+    Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab);
     assert( pCsr->pExpr );
     sqlite3_reset(pCsr->pStmt);
     sqlite3_bind_int64(pCsr->pStmt, 1, fts5CursorRowid(pCsr));
+    pTab->pConfig->bLock++;
     rc = sqlite3_step(pCsr->pStmt);
+    pTab->pConfig->bLock--;
     if( rc==SQLITE_ROW ){
       rc = SQLITE_OK;
       CsrFlagClear(pCsr, FTS5CSR_REQUIRE_CONTENT);
@@ -223505,6 +229352,10 @@ static int fts5SeekCursor(Fts5Cursor *pCsr, int bErrormsg){
       rc = sqlite3_reset(pCsr->pStmt);
       if( rc==SQLITE_OK ){
         rc = FTS5_CORRUPT;
+      }else if( pTab->pConfig->pzErrmsg ){
+        *pTab->pConfig->pzErrmsg = sqlite3_mprintf(
+            "%s", sqlite3_errmsg(pTab->pConfig->db)
+        );
       }
     }
   }
@@ -224520,10 +230371,12 @@ static int fts5ColumnMethod(
       }
     }
   }else if( !fts5IsContentless(pTab) ){
+    pConfig->pzErrmsg = &pTab->p.base.zErrMsg;
     rc = fts5SeekCursor(pCsr, 1);
     if( rc==SQLITE_OK ){
       sqlite3_result_value(pCtx, sqlite3_column_value(pCsr->pStmt, iCol+1));
     }
+    pConfig->pzErrmsg = 0;
   }
   return rc;
 }
@@ -224800,7 +230653,7 @@ static void fts5SourceIdFunc(
 ){
   assert( nArg==0 );
   UNUSED_PARAM2(nArg, apUnused);
-  sqlite3_result_text(pCtx, "fts5: 2019-10-10 20:19:45 18db032d058f1436ce3dea84081f4ee5a0f2259ad97301d43c426bc7f3df1b0b", -1, SQLITE_TRANSIENT);
+  sqlite3_result_text(pCtx, "fts5: 2020-08-14 13:23:32 fca8dc8b578f215a969cd899336378966156154710873e68b3d9ac5881b0ff3f", -1, SQLITE_TRANSIENT);
 }
 
 /*
@@ -225494,6 +231347,8 @@ static int sqlite3Fts5StorageDeleteAll(Fts5Storage *p){
   Fts5Config *pConfig = p->pConfig;
   int rc;
 
+  p->bTotalsValid = 0;
+
   /* Delete the contents of the %_data and %_docsize tables. */
   rc = fts5ExecPrintf(pConfig->db, 0,
       "DELETE FROM %Q.'%q_data';"
@@ -225545,10 +231400,11 @@ static int sqlite3Fts5StorageRebuild(Fts5Storage *p){
     for(ctx.iCol=0; rc==SQLITE_OK && ctx.iCol<pConfig->nCol; ctx.iCol++){
       ctx.szCol = 0;
       if( pConfig->abUnindexed[ctx.iCol]==0 ){
+        const char *zText = (const char*)sqlite3_column_text(pScan, ctx.iCol+1);
+        int nText = sqlite3_column_bytes(pScan, ctx.iCol+1);
         rc = sqlite3Fts5Tokenize(pConfig,
             FTS5_TOKENIZE_DOCUMENT,
-            (const char*)sqlite3_column_text(pScan, ctx.iCol+1),
-            sqlite3_column_bytes(pScan, ctx.iCol+1),
+            zText, nText,
             (void*)&ctx,
             fts5StorageInsertCallback
         );
@@ -225670,10 +231526,11 @@ static int sqlite3Fts5StorageIndexInsert(
   for(ctx.iCol=0; rc==SQLITE_OK && ctx.iCol<pConfig->nCol; ctx.iCol++){
     ctx.szCol = 0;
     if( pConfig->abUnindexed[ctx.iCol]==0 ){
+      const char *zText = (const char*)sqlite3_value_text(apVal[ctx.iCol+2]);
+      int nText = sqlite3_value_bytes(apVal[ctx.iCol+2]);
       rc = sqlite3Fts5Tokenize(pConfig,
           FTS5_TOKENIZE_DOCUMENT,
-          (const char*)sqlite3_value_text(apVal[ctx.iCol+2]),
-          sqlite3_value_bytes(apVal[ctx.iCol+2]),
+          zText, nText,
           (void*)&ctx,
           fts5StorageInsertCallback
       );
@@ -225842,10 +231699,11 @@ static int sqlite3Fts5StorageIntegrity(Fts5Storage *p){
           rc = sqlite3Fts5TermsetNew(&ctx.pTermset);
         }
         if( rc==SQLITE_OK ){
+          const char *zText = (const char*)sqlite3_column_text(pScan, i+1);
+          int nText = sqlite3_column_bytes(pScan, i+1);
           rc = sqlite3Fts5Tokenize(pConfig,
               FTS5_TOKENIZE_DOCUMENT,
-              (const char*)sqlite3_column_text(pScan, i+1),
-              sqlite3_column_bytes(pScan, i+1),
+              zText, nText,
               (void*)&ctx,
               fts5StorageIntegrityCallback
           );
@@ -228538,6 +234396,7 @@ struct Fts5VocabTable {
   sqlite3 *db;                    /* Database handle */
   Fts5Global *pGlobal;            /* FTS5 global object for this database */
   int eType;                      /* FTS5_VOCAB_COL, ROW or INSTANCE */
+  unsigned bBusy;                 /* True if busy */
 };
 
 struct Fts5VocabCursor {
@@ -228820,6 +234679,12 @@ static int fts5VocabOpenMethod(
   sqlite3_stmt *pStmt = 0;
   char *zSql = 0;
 
+  if( pTab->bBusy ){
+    pVTab->zErrMsg = sqlite3_mprintf(
+       "recursive definition for %s.%s", pTab->zFts5Db, pTab->zFts5Tbl
+    );
+    return SQLITE_ERROR;
+  }
   zSql = sqlite3Fts5Mprintf(&rc,
       "SELECT t.%Q FROM %Q.%Q AS t WHERE t.%Q MATCH '*id'",
       pTab->zFts5Tbl, pTab->zFts5Db, pTab->zFts5Tbl, pTab->zFts5Tbl
@@ -228831,10 +234696,12 @@ static int fts5VocabOpenMethod(
   assert( rc==SQLITE_OK || pStmt==0 );
   if( rc==SQLITE_ERROR ) rc = SQLITE_OK;
 
+  pTab->bBusy = 1;
   if( pStmt && sqlite3_step(pStmt)==SQLITE_ROW ){
     i64 iId = sqlite3_column_int64(pStmt, 0);
     pFts5 = sqlite3Fts5TableFromCsrid(pTab->pGlobal, iId);
   }
+  pTab->bBusy = 0;
 
   if( rc==SQLITE_OK ){
     if( pFts5==0 ){
@@ -229437,7 +235304,8 @@ static int stmtColumn(
       sqlite3_result_int(ctx, sqlite3_stmt_busy(pCur->pStmt));
       break;
     }
-    case STMT_COLUMN_MEM: {
+    default: {
+      assert( i==STMT_COLUMN_MEM );
       i = SQLITE_STMTSTATUS_MEMUSED +
             STMT_COLUMN_NSCAN - SQLITE_STMTSTATUS_FULLSCAN_STEP;
       /* Fall thru */
@@ -229568,15 +235436,14 @@ SQLITE_API int sqlite3_stmt_init(
 #endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_STMTVTAB) */
 
 /************** End of stmt.c ************************************************/
-#if __LINE__!=229547
+#if __LINE__!=235413
 #undef SQLITE_SOURCE_ID
-#define SQLITE_SOURCE_ID      "2019-10-10 20:19:45 18db032d058f1436ce3dea84081f4ee5a0f2259ad97301d43c426bc7f3dfalt2"
+#define SQLITE_SOURCE_ID      "2020-08-14 13:23:32 fca8dc8b578f215a969cd899336378966156154710873e68b3d9ac5881b0alt2"
 #endif
 /* Return the source-id for this library */
 SQLITE_API const char *sqlite3_sourceid(void){ return SQLITE_SOURCE_ID; }
 /************************** End of sqlite3.c ******************************/
 
-#pragma GCC diagnostic pop
 /************** Begin file dbdump.c ********************************************/
 /*
 ** 2016-03-13
@@ -229624,6 +235491,9 @@ SQLITE_API const char *sqlite3_sourceid(void){ return SQLITE_SOURCE_ID; }
 ** of the database file, the schema, and optionally the table, forming the
 ** first three arguments of a single call to the library routine.
 */
+#include "sqlite3.h"
+#include <stdarg.h>
+#include <string.h>
 #include <ctype.h>
 
 /*
@@ -229783,7 +235653,7 @@ static char **tableColumnList(DState *p, const char *zTab){
       nPK++;
       if( nPK==1
        && sqlite3_stricmp((const char*)sqlite3_column_text(pStmt,2),
-                          "INTEGER")==0
+                          "INTEGER")==0 
       ){
         isIPK = 1;
       }else{
@@ -229969,11 +235839,11 @@ static int dump_callback(void *pArg, int nArg, char **azArg, char **azCol){
   zType = azArg[1];
   zSql = azArg[2];
 
-  if( strcmp(zTable, "sqlcipher_sequence")==0 ){
+  if( strcmp(zTable, "sqlite_sequence")==0 ){
     p->xCallback("DELETE FROM sqlite_sequence;\n", p->pArg);
-  }else if( sqlite3_strglob("sqlcipher_stat?", zTable)==0 ){
-    p->xCallback("ANALYZE sqlite_master;\n", p->pArg);
-  }else if( strncmp(zTable, "sqlcipher_", 10)==0 ){
+  }else if( sqlite3_strglob("sqlite_stat?", zTable)==0 ){
+    p->xCallback("ANALYZE sqlite_schema;\n", p->pArg);
+  }else if( strncmp(zTable, "sqlite_", 7)==0 ){
     return 0;
   }else if( strncmp(zSql, "CREATE VIRTUAL TABLE", 20)==0 ){
     if( !p->writableSchema ){
@@ -229981,7 +235851,7 @@ static int dump_callback(void *pArg, int nArg, char **azArg, char **azCol){
       p->writableSchema = 1;
     }
     output_formatted(p,
-       "INSERT INTO sqlite_master(type,name,tbl_name,rootpage,sql)"
+       "INSERT INTO sqlite_schema(type,name,tbl_name,rootpage,sql)"
        "VALUES('table','%q','%q',0,'%q');",
        zTable, zTable, zSql);
     return 0;
@@ -230010,12 +235880,7 @@ static int dump_callback(void *pArg, int nArg, char **azArg, char **azCol){
 
     /* Always quote the table name, even if it appears to be pure ascii,
     ** in case it is a keyword. Ex:  INSERT INTO "table" ... */
-    if (strncmp(zTable, "sqlcipher_", sizeof "sqlcipher"))
-      appendText(&sTable, zTable, quoteChar(zTable));
-    else {
-      appendText(&sTable, "sqlite_", 0);
-      appendText(&sTable, zTable + sizeof "sqlcipher", 0);
-    }
+    appendText(&sTable, zTable, quoteChar(zTable));
 
     /* If preserving the rowid, add a column list after the table name.
     ** In other words:  "INSERT INTO tab(rowid,a,b,c,...) VALUES(...)"
@@ -230083,7 +235948,7 @@ static int dump_callback(void *pArg, int nArg, char **azArg, char **azCol){
               break;
             }
             case SQLITE_TEXT: {
-              output_quoted_escaped_string(p,
+              output_quoted_escaped_string(p, 
                    (const char*)sqlite3_column_text(pStmt,i));
               break;
             }
@@ -230196,7 +236061,7 @@ static void run_schema_dump_query(
   va_list ap;
   va_start(ap, zQuery);
   z = sqlite3_vmprintf(zQuery, ap);
-  va_end(ap);
+  va_end(ap); 
   sqlite3_exec(p->db, z, dump_callback, p, &zErr);
   sqlite3_free(z);
   if( zErr ){
@@ -230213,6 +236078,8 @@ static void run_schema_dump_query(
 */
 int sqlite3_db_dump(
   sqlite3 *db,               /* The database connection */
+  const char *zSchema,       /* Which schema to dump.  Usually "main". */
+  const char *zTable,        /* Which table to dump.  NULL means everything. */
   int (*xCallback)(const char*,void*),   /* Output sent to this callback */
   void *pArg                             /* Second argument of the callback */
 ){
@@ -230224,24 +236091,41 @@ int sqlite3_db_dump(
   x.xCallback = xCallback;
   x.pArg = pArg;
   xCallback("PRAGMA foreign_keys=OFF;\nBEGIN TRANSACTION;\n", pArg);
-  run_schema_dump_query(&x,
-    "SELECT name, type, sql FROM sqlcipher_master "
-    "WHERE sql NOT NULL AND type=='table' AND name!='sqlcipher_sequence'"
-  );
-  run_schema_dump_query(&x,
-    "SELECT name, type, sql FROM sqlcipher_master "
-    "WHERE name=='sqlcipher_sequence'"
-  );
-  output_sql_from_query(&x,
-    "SELECT sql FROM sqlcipher_master "
-    "WHERE sql NOT NULL AND type IN ('index','trigger','view')", 0
-  );
+  if( zTable==0 ){
+    run_schema_dump_query(&x,
+      "SELECT name, type, sql FROM \"%w\".sqlite_schema "
+      "WHERE sql NOT NULL AND type=='table' AND name!='sqlite_sequence'",
+      zSchema
+    );
+    run_schema_dump_query(&x,
+      "SELECT name, type, sql FROM \"%w\".sqlite_schema "
+      "WHERE name=='sqlite_sequence'", zSchema
+    );
+    output_sql_from_query(&x,
+      "SELECT sql FROM sqlite_schema "
+      "WHERE sql NOT NULL AND type IN ('index','trigger','view')", 0
+    );
+  }else{
+    run_schema_dump_query(&x,
+      "SELECT name, type, sql FROM \"%w\".sqlite_schema "
+      "WHERE tbl_name=%Q COLLATE nocase AND type=='table'"
+      "  AND sql NOT NULL",
+      zSchema, zTable
+    );
+    output_sql_from_query(&x,
+      "SELECT sql FROM \"%w\".sqlite_schema "
+      "WHERE sql NOT NULL"
+      "  AND type IN ('index','trigger','view')"
+      "  AND tbl_name=%Q COLLATE nocase",
+      zSchema, zTable
+    ); 
+  }
   if( x.writableSchema ){
     xCallback("PRAGMA writable_schema=OFF;\n", pArg);
   }
   xCallback(x.nErr ? "ROLLBACK; -- due to errors\n" : "COMMIT;\n", pArg);
   sqlite3_exec(db, "COMMIT", 0, 0, 0);
-  return x.rc ?: x.nErr ? SQLITE_ERROR : SQLITE_OK;
+  return x.rc;
 }
 /************** End of dbdump.c ************************************************/