Comment by dust-jacket
12 hours ago
My advice is: don't write complicated SQL.
The best thing I learned about SQL is that it can do an awful lot of clever stuff but that the vast majority of the time you really don't need it. Learn the basics. Shrug the rest off.
This is the correct way. Much like any other kind of code, if you find yourself doing something "clever" it's time to think about whether you're really going down the right path.
What do you consider to be clever SQL?