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Class Filter (7.11.0) | Node.js client library

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A Filter represents a restriction on one or more field values and can be used to refine the results of a Query. Filterss are created by invoking , , or and can then be passed to to create a new Query instance that also contains this Filter.

static and(...filters: Filter[]): Filter;

Creates and returns a new [Filter]Filter that is a conjunction of the given Filters. A conjunction filter includes a document if it satisfies all of the given Filters.

The returned Filter can be applied to [Query.where()], [Filter.or()], or [Filter.and()]. When applied to a [Query]Query it requires that documents must satisfy one of the provided Filters.

Optional. The Filters for AND operation. These must be created with calls to , , or .

{Filter} The created Filter.

let collectionRef = firestore.collection('col');

// doc.foo == 'bar' && doc.baz > 0
let andFilter = Filter.and(Filter.where('foo', '==', 'bar'), Filter.where('baz', '>', 0));

collectionRef.where(andFilter).get().then(querySnapshot => {
  querySnapshot.forEach(documentSnapshot => {
    console.log(`Found document at ${documentSnapshot.ref.path}`);
  });
});

static or(...filters: Filter[]): Filter;

Creates and returns a new [Filter]Filter that is a disjunction of the given Filters. A disjunction filter includes a document if it satisfies any of the given Filters.

The returned Filter can be applied to [Query.where()], [Filter.or()], or [Filter.and()]. When applied to a [Query]Query it requires that documents must satisfy one of the provided Filters.

Optional. The Filters for OR operation. These must be created with calls to , , or .

{Filter} The created Filter.

let collectionRef = firestore.collection('col');

// doc.foo == 'bar' || doc.baz > 0
let orFilter = Filter.or(Filter.where('foo', '==', 'bar'), Filter.where('baz', '>', 0));

collectionRef.where(orFilter).get().then(querySnapshot => {
  querySnapshot.forEach(documentSnapshot => {
    console.log(`Found document at ${documentSnapshot.ref.path}`);
  });
});

static where(fieldPath: string | firestore.FieldPath, opStr: firestore.WhereFilterOp, value: unknown): Filter;

Creates and returns a new [Filter]Filter, which can be applied to [Query.where()], [Filter.or()], or [Filter.and()]. When applied to a [Query]Query it requires that documents must contain the specified field and that its value should satisfy the relation constraint provided.

The name of a property value to compare.

A comparison operation in the form of a string. Acceptable operator strings are "<", "<=", "==", "!=", ">=", ">", "array-contains", "in", "not-in", and "array-contains-any".

The value to which to compare the field for inclusion in a query.

{Filter} The created Filter.

let collectionRef = firestore.collection('col');

collectionRef.where(Filter.where('foo', '==', 'bar')).get().then(querySnapshot => {
  querySnapshot.forEach(documentSnapshot => {
    console.log(`Found document at ${documentSnapshot.ref.path}`);
  });
});

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Last updated 2025-08-07 UTC.

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