Forum:SQL Reference Wiki

I am a developer and have always thought about creating an online SQL reference to assist me in my work. While doing development work, I usually wind up telling myself that I can get what I need by Googling the topic. It's very hit-and-miss. Sometimes I find what I need - other times I spend too much time and wind up having to go to a reference book. If someone knows of a good SQL reference web site, then no wiki necessary. Otherwise, I think this wiki would be very useful and good for Wikia. I would like to do the same for PHP, MySQL, PL/SQL, Oracle, VB, and Web 2.0 if this takes off.