```
play-eu :) SELECT actor_login, event_type, count() FROM github_events WHERE repo_name = 'ClickHouse/ClickHouse' GROUP BY actor_login, event_type WITH ROLLUP ORDER BY count() DESC LIMIT 10

SELECT
    actor_login,
    event_type,
    count()
FROM github_events
WHERE repo_name = 'ClickHouse/ClickHouse'
GROUP BY
    actor_login,
    event_type
    WITH ROLLUP
ORDER BY count() DESC
LIMIT 10

Query id: 1b7baa06-2ee6-4ae8-b1ed-4c9ecb21514c

Ok.
Exception on client:
Code: 36. DB::Exception: Code: 36. DB::Exception: Unexpected value 0 in enum. (BAD_ARGUMENTS) (version 22.5.1.1984 (official build)). (BAD_ARGUMENTS)
```
[[nodiscard]] virtual const char * getFamilyName() const = 0;
    
    [[nodiscard]] virtual TypeIndex getDataType() const = 0;
    /** If column isn't constant, returns itself.
      * If column is constant, transforms constant to full column (if column type allows such transform) and return it.
      */
    [[nodiscard]] virtual Ptr convertToFullColumnIfConst() const { return getPtr(); }
    
    
    [[nodiscard]] virtual Ptr convertToFullColumnIfLowCardinality() const { return getPtr(); }
    
    
    [[nodiscard]] virtual Ptr convertToFullColumnIfSparse() const { return getPtr(); }
    [[nodiscard]] Ptr convertToFullIfNeeded() const
    {
        return convertToFullColumnIfSparse()->convertToFullColumnIfConst()->convertToFullColumnIfLowCardinality();
    }
    
    [[nodiscard]] virtual MutablePtr cloneEmpty() const { return cloneResized(0); }