Things I didn't know about mysql

Via WeberBlog

Lately I have been going over the MySQL 4.0.x manual step by step. I thought I knew most of the things that MySQL has to offer but it seems that there are quite a few cool things that I didn't know. Some are cool and useful, some I have no idea what they are good for but since I'm already going over the manual I decided to share with the readers some of these things