[bluefirebrand]

> different levels of sophistication

Most of those are not necessary for 90% of use cases

I'm not taking the piss either

All most people really need to know is table CRUD, row CRUD, and a bit about indices.

For anything more advanced you'll need a DBA, but IMO you unless you are scaling like crazy you will not need much more than that for SQL knowledge. It's really, really not that complex for most use cases

[therealdrag0]

You should also learn joins and ordering/pagination. But that can be on day 2 :)

[bluefirebrand]

I consider those to be part of basic Table CRUD, but yes, absolutely. :)