```
CREATE TABLE t (x UInt8, PROJECTION p (SELECT x GROUP BY x)) ENGINE = MergeTree ORDER BY ();
INSERT INTO t VALUES (0);

SET group_by_overflow_mode = 'any', max_rows_to_group_by = 1000, totals_mode = 'after_having_auto';
SELECT x FROM t GROUP BY x WITH TOTALS;
```
if (version.creation_csn == Tx::RolledBackCSN || version.removal_csn)
        {
            auto next_it = std::next(iter);
            deactivate_part(iter);
            iter = next_it;
        }
        else
        {
            ++iter;
        }
    }
    if (have_parts_with_version_metadata)
        transactions_enabled.store(true);
    
    
    
    auto active_parts_range = getDataPartsStateRange(DataPartState::Active);
    auto prev_it = active_parts_range.begin();
    auto end_it = active_parts_range.end();
    bool less_than_two_active_parts = prev_it == end_it || std::next(prev_it) == end_it;
    if (!less_than_two_active_parts)
    {
        (*prev_it)->assertState({DataPartState::Active});
        auto curr_it = std::next(prev_it);
        while (curr_it != data_parts_by_state_and_info.end() && (*curr_it)->getState() == DataPartState::Active)
        {
            (*curr_it)->assertState({DataPartState::Active});
            
            if ((*curr_it)->info.partition_id != (*prev_it)->info.partition_id)