SQL book recommendation (Score 1)

'The SQL Guide to Oracle' by Rick F van der Lans


ISBN: 0-201-56545-5

This has been the most helpful general SQL reference I've been able to find in a single book.
Don't worry about its age (1992) or the Oracle in the title ... only a small portion of this book is Oracle specific (and thus also dated). Coupled with documentation of whatever built-in packages MySQL has, you'll be set. Good luck.