A few pages past the table of contents, I had solved two issues that had been bugging me since my last install. It was pretty minor stuff, but could I as heck find the answers online. It just shows what research, presentation, and quality control can achieve. So, another score for books over bytes.
The layout is uncluttered, and you can usually get the gist without reading through pages of preamble and exposition. The examples are practical and adaptable (no long and complex routines found on some sites) so they can almost be cut and pasted into your own applications. As your applications develop, there's always something else you can add.
The only downside is that it's a book - a few mods to MySQL and you might have to fork out for the next revision. Still, I should have got my money's worth by then.
Explains by example so many common queries you'll be able to solve a wide variety of problems instantly. SQL is a deceptively deep language and getting to grips with this small army of queries gives you the basics to build on. Easy reading and sensible examples. Some omissions (insert) but it's not the complex stuff - that part is really taught well.