Yeah...title says it all.
Bug bug #11661, Raising Exceptions from within stored procedures: Support for SIGNAL statement.
I can't recall the exact moment of filing this bug, because I filed a lot of them. However, this one is special to me because I filed it when I was in the process of getting involved with MySQL and its community. I remember it as a very intense period of learning, meeting other community members online (mostly through forums.mysql.com and blogging on a regular basis.
A lot has happened since then, and if you ask me, most of it is good stuff. The only thing that casts somewhat of a shadow is that it took so long to fix this. But I don't want to whine about it. Rather, I'd like to use this opportunity and extend my big, BIG THANK YOU!! to Marc Alff who has been working very hard on implementing this feature. I should also mention Peter Gulutzan, who's enduring attention to quality and efforts for making MySQL comply more to the SQL Standard have made MySQL a better product.
Thanks Guys! I'm looking forward to using this and other features in MySQL 6.0.