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'。
{
    if (!destination_id)
        return false;
    auto dest = DatabaseCatalog::instance().tryGetTable(destination_id, getContext());
    if (dest && dest.get() != this)
        return dest->supportsPrewhere();
    return false;
}
bool StorageBuffer::checkThresholds(const Buffer & buffer, bool direct, time_t current_time, size_t additional_rows, size_t additional_bytes) const
{
    time_t time_passed = 0;
    if (buffer.first_write_time)
        time_passed = current_time - buffer.first_write_time;
    size_t rows = buffer.data.rows() + additional_rows;
    size_t bytes = buffer.data.bytes() + additional_bytes;
    return checkThresholdsImpl(direct, rows, bytes, time_passed);
}
bool StorageBuffer::checkThresholdsImpl(bool direct, size_t rows, size_t bytes, time_t time_passed) const