mongodb query in array

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mongodb query in array

The $elemMatch operator limits the contents of an <array> field from the query results to contain only the first element matching the $elemMatch condition. ,The $elemMatch operator matches documents that contain an array field with at ... The following query matches only those documents where the results array ... ,Definition¶. $in ¶. New in version 3.4. Returns a boolean indicating whether a specified value is in an array. $in has the following operator expression syntax:. ,The $size operator matches any array with the number of elements specified by the argument. For example: ... For additional examples in querying arrays, see:. ,$all, Matches arrays that contain all elements specified in the query. $elemMatch, Selects documents if element in the array field matches all the specified ... ,Acts as a placeholder to update all elements in an array for the documents that match the query condition. $[<identifier>], Acts as a placeholder to update all ... , As favouriteFoods is a simple array of strings, you can just query that field directly: PersonModel.find( favouriteFoods: "sushi" }, ...); But I'd also ...,The $in operator selects the documents where the value of a field equals any value in the specified array. To specify an $in expression, use the following ... ,This page provides examples of query operations on an array of nested documents using the db.collection.find() method in the mongo shell. The examples on ... ,MongoDB Manual - How to query an array: query on the array field as a whole, check if element in array, query for array element, query if field in array, query by ...

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mongodb query in array 相關參考資料
$elemMatch (projection) — MongoDB Manual

The $elemMatch operator limits the contents of an &lt;array&gt; field from the query results to contain only the first element matching the $elemMatch condition.

https://docs.mongodb.com

$elemMatch (query) — MongoDB Manual

The $elemMatch operator matches documents that contain an array field with at ... The following query matches only those documents where the results array&nbsp;...

https://docs.mongodb.com

$in (aggregation) — MongoDB Manual

Definition¶. $in ¶. New in version 3.4. Returns a boolean indicating whether a specified value is in an array. $in has the following operator expression syntax:.

https://docs.mongodb.com

$size — MongoDB Manual

The $size operator matches any array with the number of elements specified by the argument. For example: ... For additional examples in querying arrays, see:.

https://docs.mongodb.com

Array Query Operators — MongoDB Manual

$all, Matches arrays that contain all elements specified in the query. $elemMatch, Selects documents if element in the array field matches all the specified&nbsp;...

https://docs.mongodb.com

Array Update Operators — MongoDB Manual

Acts as a placeholder to update all elements in an array for the documents that match the query condition. $[&lt;identifier&gt;], Acts as a placeholder to update all&nbsp;...

https://docs.mongodb.com

mongodb - Find document with array that contains a specific value ...

As favouriteFoods is a simple array of strings, you can just query that field directly: PersonModel.find( favouriteFoods: &quot;sushi&quot; }, ...); But I&#39;d also&nbsp;...

https://stackoverflow.com

MongoDB Query operator - MongoDB Documentation

The $in operator selects the documents where the value of a field equals any value in the specified array. To specify an $in expression, use the following&nbsp;...

https://docs.mongodb.com

Query an Array of Embedded Documents — MongoDB Manual

This page provides examples of query operations on an array of nested documents using the db.collection.find() method in the mongo shell. The examples on&nbsp;...

https://docs.mongodb.com

Query an Array — MongoDB Manual

MongoDB Manual - How to query an array: query on the array field as a whole, check if element in array, query for array element, query if field in array, query by&nbsp;...

https://docs.mongodb.com