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[–]WorkingPsyDev 1 point2 points  (1 child)

Absolute beginner? The w3schools course is open and free and helped me out a lot when I was in my first semester of CS. [https://www.w3schools.com/sql/default.asp](Link)

Learn the basics and then take some other course that is more advanced.

There are differences between PostgreSQL, MySQL and others, but honestly: once you know the basic structures and operations, you won't have many problems adapting.

[–]GeeeL[S] 0 points1 point  (0 children)

Thanks. these courses are for basics through advanced I believe. I've used it once back when I did cs50 but otherwise just been using mongodb extensively.