SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function mapSort (children 1)
     ExpressionList (children 1)
      Identifier col
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier table_map
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier id