SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    WithElement (children 1)
     Subquery (children 1)
      SelectWithUnionQuery (children 1)
       ExpressionList (children 1)
        SelectQuery (children 3)
         ExpressionList (children 1)
          Identifier first_col
         TablesInSelectQuery (children 1)
          TablesInSelectQueryElement (children 1)
           TableExpression (children 1)
            Subquery (children 1)
             SelectWithUnionQuery (children 1)
              ExpressionList (children 1)
               SelectQuery (children 3)
                ExpressionList (children 2)
                 Identifier first_col
                 Identifier second_col (alias total)
                TablesInSelectQuery (children 1)
                 TablesInSelectQueryElement (children 1)
                  TableExpression (children 1)
                   TableIdentifier tp2
                ExpressionList (children 1)
                 OrderByElement (children 1)
                  Literal UInt64_2
         Literal UInt64_1
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier res