I created a set of videos for Udemy, but they complained about audio quality so I added them to YouTube. I cover a variety of basics (joins) but also get into s

I created a set of videos for Udemy, but they complained about audio quality so I added them to YouTube. I cover a variety of basics (joins) but also get into subqueries, correlated subqueries, window functions and all along use a freely available database. https://www.youtube.com/playlist?list=PLImyDqSBQbdm09n4BhGwKhnPrdHgN1-da https://www.youtube.com/playlist?list=PLImyDqSBQbdm09n4BhGwK...