queryselectors

Comparison Operators

Name

Description

$eq

Matches values that are equal to a specified value.

$gt

Matches values that are greater than a specified value.

$gte

Matches values that are greater than or equal to a specified value.

$in

Matches any of the values specified in an array.

$lt

Matches values that are less than a specified value.

$lte

Matches values that are less than or equal to a specified value.

$ne

Matches all values that are not equal to a specified value.

$nin

Matches none of the values specified in an array.

Logical

Name

Description

$and

Joins query clauses with a logical AND returns all documents that match the conditions of both clauses.

$not

Inverts the effect of a query expression and returns documents that do not match the query expression.

$nor

Joins query clauses with a logical NOR returns all documents that fail to match both clauses.

$or

Joins query clauses with a logical OR returns all documents that match the conditions of either clause.

Element

Name

Description

$exists

Matches documents that have the specified field.

$type

Selects documents if a field is of the specified type.

Evaluation

Name

Description

$expr

Allows use of aggregation expressions within the query language.

$jsonSchema

Validate documents against the given JSON Schema.

$mod

Performs a modulo operation on the value of a field and selects documents with a specified result.

$regex

Selects documents where values match a specified regular expression.

$text

Performs text search.

$where

Matches documents that satisfy a JavaScript expression.

Geospatial

Name

Description

$geoIntersects

Selects geometries that intersect with a GeoJSON geometry. The 2dsphere index supports $geoIntersects.

$geoWithin

Selects geometries within a bounding GeoJSON geometry. The 2dsphere and 2d indexes support $geoWithin.

$near

Returns geospatial objects in proximity to a point. Requires a geospatial index. The 2dsphere and 2d indexes support $near.

$nearSphere

Returns geospatial objects in proximity to a point on a sphere. Requires a geospatial index. The 2dsphere and 2d indexes support $nearSphere.

Array

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.

$max

Selects documents if the array field is a specified size.

Bitwise

Name

Description

$bitsAllClear

Matches numeric or binary values in which a set of bit positions all have a value of 0.

$bitsAllSet

Matches numeric or binary values in which a set of bit positions all have a value of 1.

$bitsAnyClear

Matches numeric or binary values in which any bit from a set of bit positions has a value of 0.

$bitsAnySet

Matches numeric or binary values in which any bit from a set of bit positions has a value of 1.

Comments

Name

Description

$comment

Adds a comment to a query predicate.

Projection Operators

Name

Description

$

Projects the first element in an array that matches the query condition.

$elemMatch

Projects the first element in an array that matches the specified $elemMatch condition.

$meta

Projects the document’s score assigned during $text operation.

$slice

Limits the number of elements projected from an array. Supports skip and limit slices.

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