@Override
public boolean hasSubQuery() {
OLAPRel olapChild = (OLAPRel) getChild();
return olapChild.hasSubQuery();
}
private ColumnRowType buildColumnRowType() {
OLAPRel olapChild = (OLAPRel) getChild();
ColumnRowType inputColumnRowType = olapChild.getColumnRowType();
return inputColumnRowType;
}