I often need to do SQL things and am constantly looking up the references to check what I’m doing. GalaXQL is a cool downloadable interactive SQL tutorial (free), using a fictional galaxy for live demonstrations.
Folks, I'm sorry, but the comment spammers send about a million more comments than real readers do and I can't stand the spam. I've disabled comments again. Feel free to respond to @miraz on Twitter or to email me through the contact form on the site.