MongoDB query expression
Close ×. MongoDB Manual. Version 4.2 (current). Version 4.4 (upcoming) ... ,The query syntax is identical to the read operation query syntax; i.e. $match does not accept raw aggregation expressions. Instead, use a $expr query expression ... ,$regex vs. /pattern/ Syntax¶. $in Expressions¶. To include a regular expression in ... ,The $text operator accepts a text query document with the following fields: ... ,Joins query clauses with a logical NOR returns all documents that fail to match ... ,0 or false to exclude the field. Expression using a Projection Operators. find() operations on views do not support the following projection operators ... ,Analyze Query Performance · Tailable Cursors ... Aggregation Commands Comparison · Variables in Aggregation Expressions · SQL to Aggregation Mapping ... ,$not, Inverts the effect of a query expression and returns documents that do not ... $expr, Allows use of aggregation expressions within the query language. ,How do I query documents, query top level fields, perform equality match, query ... To specify equality conditions, use <field>:<value> expressions in the query ... ,Close ×. MongoDB Manual. Version 4.2 (current). Version 4.4 (upcoming) ...
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 MongoDB query expression 相關參考資料
$expr — MongoDB Manual
Close ×. MongoDB Manual. Version 4.2 (current). Version 4.4 (upcoming) ... https://docs.mongodb.com $match (aggregation) — MongoDB Manual
The query syntax is identical to the read operation query syntax; i.e. $match does not accept raw aggregation expressions. Instead, use a $expr query expression ... https://docs.mongodb.com $regex — MongoDB Manual
$regex vs. /pattern/ Syntax¶. $in Expressions¶. To include a regular expression in ... https://docs.mongodb.com $text — MongoDB Manual
The $text operator accepts a text query document with the following fields: ... https://docs.mongodb.com Logical Query Operators — MongoDB Manual
Joins query clauses with a logical NOR returns all documents that fail to match ... https://docs.mongodb.com MongoDB db.collection.find() - MongoDB Documentation
0 or false to exclude the field. Expression using a Projection Operators. find() operations on views do not support the following projection operators ... https://docs.mongodb.com Operators — MongoDB Manual
Analyze Query Performance · Tailable Cursors ... Aggregation Commands Comparison · Variables in Aggregation Expressions · SQL to Aggregation Mapping ... https://docs.mongodb.com Query and Projection Operators — MongoDB Manual
$not, Inverts the effect of a query expression and returns documents that do not ... $expr, Allows use of aggregation expressions within the query language. https://docs.mongodb.com Query Documents — MongoDB Manual
How do I query documents, query top level fields, perform equality match, query ... To specify equality conditions, use <field>:<value> expressions in the query ... https://docs.mongodb.com Query Operators - $and — MongoDB Manual
Close ×. MongoDB Manual. Version 4.2 (current). Version 4.4 (upcoming) ... https://docs.mongodb.com |