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| author | adam <adamansky@gmail.com> | 2012-12-25 00:00:45 +0700 |
|---|---|---|
| committer | adam <adamansky@gmail.com> | 2012-12-25 00:00:45 +0700 |
| commit | ef42fe6d3024e568379db2cd41e09171cb0b1b98 (patch) | |
| tree | 0bc8d68fe8484622c6b2b2260333a2dae5104ada /node | |
| parent | dd63c6c9b9c65c00d943a8b17ff54567bc6adea1 (diff) | |
| download | ejdb-ef42fe6d3024e568379db2cd41e09171cb0b1b98.tar.gz ejdb-ef42fe6d3024e568379db2cd41e09171cb0b1b98.tar.bz2 ejdb-ef42fe6d3024e568379db2cd41e09171cb0b1b98.zip | |
#13 done
Diffstat (limited to 'node')
| -rw-r--r-- | node/ejdb.js | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/node/ejdb.js b/node/ejdb.js index e2db70a..66abc00 100644 --- a/node/ejdb.js +++ b/node/ejdb.js @@ -286,6 +286,9 @@ function parseQueryArgs(args) { * icase matching with '$in' operation: * - {'name' : {'$icase' : {'$in' : ['tHéâtre - театр', 'heLLo WorlD']}}} * For case insensitive matching you can create special type of string index. + * - $elemMatch The $elemMatch operator matches more than one component within an array element. + * - { array: { $elemMatch: { value1 : 1, value2 : { $gt: 1 } } } } + * Restriction: only one $elemMatch allowed in context of one array field. * * - Queries can be used to update records: * @@ -301,6 +304,7 @@ function parseQueryArgs(args) { * $pull Atomically removes all occurrences of value from field, if field is an array. * - {.., '$pull' : {'json.field.path' : val1, 'json.field.pathN' : valN, ...}} * + * * NOTE: It is better to execute update queries with `$onlycount=true` hint flag * or use the special `update()` method to avoid unnecessarily data fetching. * NOTE: Negate operations: $not and $nin not using indexes |