There are multiple years available for his first DB class but that’s the one I watched. I almost called it his ‘basic’ class but there’s literally only like one or two classes on SQL before he dives into all the various layers of the internals.
There’s also a few of his advanced courses. And then you’ll see guest lectures from industry on about every one of the new DB platforms you can think of.
They’re all under “CMU Database Group” on Youtube.
Highly recommend.