unionAll method
Combine this Query with other using UNION ALL set operator.
This returns a Query containing all the rows from this Query and
other. Unlike .union this retains duplicate rows.
Implementation
Query<(Expr<A>,)> unionAll(Query<(Expr<A>,)> other) => Query._(
_context,
_expressions,
(e) => UnionAllClause._(_from(_expressions.toList()), other._castAs(this)),
);