internal static bool CanLift(SqlSource source, HashSet<SqlAlias> aliasesForLifting, HashSet<SqlExpression> liftedExpressions)
{
SelectionLifter v = new SelectionLifter(false, aliasesForLifting, liftedExpressions);
v.VisitSource(source);
return v.CanLiftAll;
}
internal static List<List<SqlColumn>> Lift(SqlSource source, HashSet<SqlAlias> aliasesForLifting, HashSet<SqlExpression> liftedExpressions)
{
SelectionLifter v = new SelectionLifter(true, aliasesForLifting, liftedExpressions);
v.VisitSource(source);
return v.Lifted;
}
