SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Identifier x
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 2)
         SelectQuery (children 1)
          ExpressionList (children 2)
           Literal UInt64_1 (alias x)
           Literal UInt64_1 (alias ord)
         SelectQuery (children 1)
          ExpressionList (children 2)
           Literal Array_[UInt64_1, UInt64_2, UInt64_3] (alias x)
           Literal UInt64_2 (alias ord)
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier ord
