Hello, FYI, SHOW EXPLAIN has been merged and pushed to 10.0-base. It was not pushed into 5.5. Just in case, the final 5.5-based tree with SHOW EXPLAIN patch can be found here: https://code.launchpad.net/~maria-captains/maria/5.5-show-explain BR Sergei -- Sergei Petrunia, Software Developer Monty Program AB, http://askmonty.org Blog: http://s.petrunia.net/blog