When I first started using postgres I was amazed at how much of what I thought was "database knowledge" was actually "working around limitations of the versions

When I first started using postgres I was amazed at how much of what I thought was "database knowledge" was actually "working around limitations of the versions of mysql I'd been using" knowledge. These days, sure, the original schema plus indices would work fine on pretty much anything I can think of. Olde mysqls were a bit special though.