If you are looking to learn the conventional mechanics of using relational DBs, The Learn X The Hard Way series is well-regarded, and there is an (in progress) SQL edition (I don’t have specific experience with this book).
If you are looking to learn the conventional mechanics of using relational DBs, The Learn X The Hard Way series is well-regarded, and there is an (in progress) SQL edition (I don’t have specific experience with this book).