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QueryConstraint class

A QueryConstraint is used to narrow the set of documents returned by a Firestore query. QueryConstraint<!-- -->s are created by invoking where()<!-- -->, orderBy()<!-- -->, startAt()<!-- -->, startAfter()<!-- -->, endBefore()<!-- -->, endAt()<!-- -->, limit()<!-- -->, limitToLast() and can then be passed to query() to create a new query instance that also contains this QueryConstraint<!-- -->.

<b>Signature:</b>

export declare abstract class QueryConstraint 

Properties

QueryConstraint.type

The type of this query constraint

<b>Signature:</b>

abstract readonly type: QueryConstraintType;