MongoDB query expression

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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)&nbsp;...

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&nbsp;...

https://docs.mongodb.com

$regex — MongoDB Manual

$regex vs. /pattern/ Syntax¶. $in Expressions¶. To include a regular expression in&nbsp;...

https://docs.mongodb.com

$text — MongoDB Manual

The $text operator accepts a text query document with the following fields:&nbsp;...

https://docs.mongodb.com

Logical Query Operators — MongoDB Manual

Joins query clauses with a logical NOR returns all documents that fail to match&nbsp;...

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&nbsp;...

https://docs.mongodb.com

Operators — MongoDB Manual

Analyze Query Performance &middot; Tailable Cursors ... Aggregation Commands Comparison &middot; Variables in Aggregation Expressions &middot; SQL to Aggregation Mapping&nbsp;...

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 &lt;field&gt;:&lt;value&gt; expressions in the query&nbsp;...

https://docs.mongodb.com

Query Operators - $and — MongoDB Manual

Close ×. MongoDB Manual. Version 4.2 (current). Version 4.4 (upcoming)&nbsp;...

https://docs.mongodb.com