Lots of great and very clear examples here. As someone who's been writing SQL for over 30 years, I wish I'd had something like this at the start. Obviously the

Lots of great and very clear examples here. As someone who's been writing SQL for over 30 years, I wish I'd had something like this at the start. Obviously there's a lot more to learn about many of these areas to really make the most of them, but this is a really good launchpad.