SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 2)
         SelectQuery (children 2)
          ExpressionList (children 2)
           Function plus (alias a) (children 1)
            ExpressionList (children 2)
             Identifier x
             Literal UInt64_1
           Identifier y
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier table_1
         SelectQuery (children 2)
          ExpressionList (children 2)
           Identifier x (alias a)
           Identifier y
          TablesInSelectQuery (children 1)
           TablesInSelectQueryElement (children 1)
            TableExpression (children 1)
             TableIdentifier table_1
   ExpressionList (children 2)
    OrderByElement (children 1)
     Identifier a
    OrderByElement (children 1)
     Identifier y
   Set
