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'。
{
    return std::make_shared<BufferSink>(*this, metadata_snapshot);
}
bool StorageBuffer::mayBenefitFromIndexForIn(
    const ASTPtr & left_in_operand, ContextPtr query_context, const StorageMetadataPtr & ) const
{
    if (!destination_id)
        return false;
    auto destination = DatabaseCatalog::instance().getTable(destination_id, query_context);
    if (destination.get() == this)
        throw Exception("Destination table is myself. Read will cause infinite loop.", ErrorCodes::INFINITE_LOOP);
    return destination->mayBenefitFromIndexForIn(left_in_operand, query_context, destination->getInMemoryMetadataPtr());
}
void StorageBuffer::startup()
{
    if (getContext()->getSettingsRef().readonly)
    {
        LOG_WARNING(log, "Storage {} is run with readonly settings, it will not be able to insert data. Set appropriate buffer_profile to fix this.", getName());
    }
    flush_handle->activateAndSchedule();
}
void StorageBuffer::flush()