@Override
public void visit(SelectOperator selection) {
final Predicate predicate = selection.getPredicate();
final VECollectPredVisitor vecpv = new VECollectPredVisitor();
predicate.accept(vecpv);
_beforeProjection.addAll(vecpv.getExpressions());
_veList.addAll(vecpv.getExpressions());
}
private void visitNested(DistinctOperator distinct) {