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Showing content from https://www.mongodb.com/docs/manual/reference/operator/query-array/ below:

Array Query Operators - Database Manual

Array operators return data based on array conditions.

For details on a specific operator, including syntax and examples, click on the link to the operator's reference page.

Name

Description

$all

Matches arrays that contain all elements specified in the query.

$elemMatch

Selects documents if element in the array field matches all the specified $elemMatch conditions.

$size

Selects documents if the array field is a specified size.

For examples on querying array fields, see:

• Query an Array

• Query an Array of Embedded Documents

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