A QueryConstraint is used to narrow the set of documents returned by a
Firestore query. QueryConstraints 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.
A
QueryConstraintis used to narrow the set of documents returned by a Firestore query.QueryConstraints 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 thisQueryConstraint.