Yeah there's a lot of these courses:
https://www.khanacademy.org/computin...rogramming/sql
I like Khan Academy because they gamify it and you can get badges and stuff lol. The first SQL basics lesson I didn't think was that useful because I don't need to build/create databases and I definitely wouldn't do it by inserting row by row. But it's helpful for better understanding on databases in general I guess.
But there are some more advanced options too from Coursera or other MOOCs.