I don't deal with SQL and my knowledge of it is limited to what I learned in high school a long time ago, but… isn't SQL like super easy? What's so difficult about it that people don't know how to use it? To me git is harder and I use that tool daily.

It's simple if you've learned it, but a bit hard to remember on specific details if you are not using it regulary. And every database is also a bit different on the advanced features.