```
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)
```
/** If column is numeric, return value of n-th element, casted to bool.
      * For NULL values of Nullable column returns false.
      * Otherwise throw an exception.
      */
    [[nodiscard]] virtual bool getBool(size_t ) const
    {
        throw Exception("Method getBool is not supported for " + getName(), ErrorCodes::NOT_IMPLEMENTED);
    }
    
    
    [[nodiscard]] virtual Ptr cut(size_t start, size_t length) const
    {
        MutablePtr res = cloneEmpty();
        res->insertRangeFrom(*this, start, length);
        return res;
    }
    
    
    virtual void insert(const Field & x) = 0;
    
    
    virtual void insertFrom(const IColumn & src, size_t n);
    
    
    virtual void insertRangeFrom(const IColumn & src, size_t start, size_t length) = 0;
    
    virtual void insertManyFrom(const IColumn & src, size_t position, size_t length)