[development] Good article on MEMORY temp tables in MySQL

For those of you who like reading performance tuning stuff: http://www.mysqlperformanceblog.com/2007/08/16/how-much-overhead-is-caused-b... This could be particularly relevant to Drupal.org if we are still getting temp tables written to disk. It turns out that even when we specify MEMORY for temp tables, MySQL still has the option of writing to disk if other buffers aren't large enough. -R