I'm going to get a book on (My)SQL so I can learn a bit more about it. My question is this... I know that MySQL is a specific product/version of SQL. But, how does MySQL differ from SQL? Would I benefit more from getting a book on MySQL since that is what I mostly use (I have the option for postgres on my site, but don't use it), or would it be better to get a book on SQL that is software independent so I could transfer that knowledge to other versions of SQL?
Thanks for your input. :)