SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 3)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Literal UInt64_1 (alias X)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Literal UInt64_2
         SelectQuery (children 1)
          ExpressionList (children 1)
           Literal UInt64_3 (alias X)
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier X