I've been looking on brushing up on my SQL lately and have been going through these resources. - Practical SQL, No Starch Press. ($30) https://nostarch.com/pr

I've been looking on brushing up on my SQL lately and have been going through these resources. - Practical SQL, No Starch Press. ($30) https://nostarch.com/practicalSQL https://nostarch.com/practicalSQL - Use The Index Luke ($15) https://use-the-index-luke.com/ https://use-the-index-luke.com/ - Database Systems Concepts & Design by Georgia Tech on Udacity (free) https://www.udacity.com/course/database-systems-concepts-design--ud150 https://www.udacity.com/course/database-systems-concepts-des... I can easily pay the $100, I cannot easily find more time, especially when there are a bunch of other things I'm spending time on. At a lower price I would likely buy the book "just because".