SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 2)
    Identifier csv_col1
    Identifier csv_col2
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test_new_col
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier csv_col1
