We do support foreign keys, just not foreign key constraints. There's actually a video in the course that talks about the difference and why you might not need

We do support foreign keys, just not foreign key constraints. There's actually a video in the course that talks about the difference and why you might not need constraints: https://planetscale.com/courses/mysql-for-developers/indexes/foreign-keys https://planetscale.com/courses/mysql-for-developers/indexes.... Correct that we don't yet support CTEs. I'm surprised to hear of an ORM that relies on them! That's pretty cool, never heard of that.