```sql

create table A ( A date) Engine=MergeTree order by A TTL A+interval 1 year;

alter table A reset SETTING TTL;

show create table A;

CREATE TABLE default.A
(
    `A` Date
)
ENGINE = MergeTree
ORDER BY A
TTL A + toIntervalYear(1)
SETTINGS index_granularity = 8192
```
original_active_part->force_keep_shared_data = true;
            }
            modifyPartState(original_active_part, DataPartState::DeleteOnDestroy);
            data_parts_indexes.erase(active_part_it);
            auto part_it = data_parts_indexes.insert(part_copy).first;
            modifyPartState(part_it, DataPartState::Active);
            ssize_t diff_bytes = part_copy->getBytesOnDisk() - original_active_part->getBytesOnDisk();
            ssize_t diff_rows = part_copy->rows_count - original_active_part->rows_count;
            increaseDataVolume(diff_bytes, diff_rows,  0);
            auto disk = original_active_part->volume->getDisk();
            String marker_path = fs::path(original_active_part->getFullRelativePath()) / IMergeTreeDataPart::DELETE_ON_DESTROY_MARKER_FILE_NAME;
            try
            {
                disk->createFile(marker_path);
            }
            catch (Poco::Exception & e)
            {
                LOG_ERROR(log, "{} (while creating DeleteOnDestroy marker: {})", e.what(), backQuote(fullPath(disk, marker_path)));
            }
            return;
        }
    }
    throw Exception("Cannot swap part '" + part_copy->name + "', no such active part.", ErrorCodes::NO_SUCH_DATA_PART);
}
MergeTreeData::DataPartPtr MergeTreeData::getActiveContainingPart(const MergeTreePartInfo & part_info) const
{
    auto lock = lockParts();
    return getActiveContainingPart(part_info, DataPartState::Active, lock);
}
MergeTreeData::DataPartPtr MergeTreeData::getActiveContainingPart(const String & part_name) const