Change the table comment after created the table is not supported now?
Like mysql : ALTER TABLE [tableName] COMMNET [comment]; 
The sql "ALTER TABLE `system`.tables UPDATE Comment='test' WHERE NAME='t1';" also not supported!!!
My version is '21.9.4.35'。
void consume(Chunk chunk) override
    {
        size_t rows = chunk.getNumRows();
        if (!rows)
            return;
        auto block = getHeader().cloneWithColumns(chunk.getColumns());
        StoragePtr destination;
        if (storage.destination_id)
        {
            destination = DatabaseCatalog::instance().tryGetTable(storage.destination_id, storage.getContext());
            if (destination.get() == &storage)
                throw Exception("Destination table is myself. Write will cause infinite loop.", ErrorCodes::INFINITE_LOOP);
        }
        size_t bytes = block.bytes();
        storage.lifetime_writes.rows += rows;
        storage.lifetime_writes.bytes += bytes;
        
        if (rows > storage.max_thresholds.rows || bytes > storage.max_thresholds.bytes)
        {
            if (storage.destination_id)
            {
                LOG_DEBUG(storage.log, "Writing block with {} rows, {} bytes directly.", rows, bytes);
                storage.writeBlockToDestination(block, destination);
            }
            return;
        }
        
        const auto start_shard_num = getThreadId() % storage.num_shards;
        
        auto shard_num = start_shard_num;