The course seems great, congratulations on putting everything together, it must've taken a lot of time and effort. Maybe you'll find my feedback instructive: I would say that I have intermediate knowledge of SQL, and most of the things are familiar to me, and what's stopping me from buying it is the lack of advanced topics.

Are you planning on adding any advanced topics like query optimizations / performance tuning, triggers, transaction types, full text search, etc.?

Do you plan on expanding this course with something like that? Because that would definitely make it a "from zero to hero" type of course.

That's my 2 cents, great work once again :)