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QueryConstraint

abstract

A QueryConstraint is used to narrow the set of documents returned by a Firestore query. QueryConstraints are created by invoking where, orderBy, {@link (startAt:1)}, {@link (startAfter:1)}, {@link (endBefore:1)}, {@link (endAt:1)}, limit, limitToLast and can then be passed to {@link (query:1)} to create a new query instance that also contains this QueryConstraint.

abstract class QueryConstraint {
abstract readonly type: QueryConstraintType;
}

§Properties

§
type: QueryConstraintType
[src]

The type of this query constraint