How to actually learn the SQL commands?

Question

I have this doubt and would like to hear the opinion of those who work or study SQL.

Answer 1

Try SQL tutorial from
https://www.w3schools.com/sql/

They got multiple databases ready where you can manipulate and practice the commands on them as much as you want.

Answer 2

I would suggest you work on SQL based projects extensively. Make some applications that do a complex set of queries, and once you understand the syntax and logic you'll be good to go.

Further, going through the following tutorial might help you - https://sysadmincasts.com/episodes/38-crash-course-on-mysql