```
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)
```
using ColumnCallback = std::function<void(WrappedPtr&)>;
    virtual void forEachSubcolumn(ColumnCallback) {}
    
    
    [[nodiscard]] virtual bool structureEquals(const IColumn &) const
    {
        throw Exception("Method structureEquals is not supported for " + getName(), ErrorCodes::NOT_IMPLEMENTED);
    }
    
    
    [[nodiscard]] virtual double getRatioOfDefaultRows(double sample_ratio = 1.0) const = 0; 
    
    virtual void getIndicesOfNonDefaultRows(Offsets & indices, size_t from, size_t limit) const = 0;
    
    
    
    
    
    [[nodiscard]] virtual Ptr createWithOffsets(const Offsets & offsets, const Field & default_field, size_t total_rows, size_t shift) const;
    [[nodiscard]] virtual SerializationInfoPtr getSerializationInfo() const;
    
    
    [[nodiscard]] virtual Ptr compress() const