> Personally I like postgresql. But as others have said there is a lot more 
> PHP+MySQL stuff out there than PostgreSQL anything. As far as I know Bruce 
> Momjan book is still the only PostgreSQL book out, though some others are due 
> RSN. So if you want to do this with a book in hand MySQL may be the way to 
> go. 


Why not just get a general SQL book?

Personally I took SQL and Database Design at Hennepin Tech. You learn 
the underlying theory behind SQL before diving into code. Which is what 
you REALLY need to learn IMHO.

And MySQL isn't going to be a good teacher, with its lack of 
implementing the DB integrity parts of SQL, and useful features like 
subselects.