Bad cast from type DB::ColumnConst to DB::ColumnString

```
/4/ :) SELECT number FROM numbers(11) ORDER BY arrayJoin(['а', 'я', '\0�', '', 'Я', '']) ASC, toString(number) ASC, 'y' ASC COLLATE 'el'

Code: 368. DB::Exception: Received from localhost:9000. DB::Exception: Bad cast from type DB::ColumnConst to DB::ColumnString. Stack trace:
```