internal static bool CanLift(SqlSource source, HashSet <SqlAlias> aliasesForLifting, HashSet <SqlExpression> liftedExpressions)
{
Diagnostics.Debug.Assert(source != null);
Diagnostics.Debug.Assert(aliasesForLifting != null);
PredicateLifter v = new PredicateLifter(false, aliasesForLifting, liftedExpressions);
v.VisitSource(source);
return(v.CanLiftAll);
}
internal static SqlExpression Lift(SqlSource source, HashSet <SqlAlias> aliasesForLifting)
{
Diagnostics.Debug.Assert(source != null);
Diagnostics.Debug.Assert(aliasesForLifting != null);
PredicateLifter v = new PredicateLifter(true, aliasesForLifting, null);
v.VisitSource(source);
return(v.Lifted);
}
