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)
           Function toUUID (alias x) (children 1)
            ExpressionList (children 1)
             Literal \'00000000-0000-0000-0000-000000000000\'
           Literal UInt64_2 (alias ord)
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier ord
