Comment 1 for bug 989206

OK I've been hacking on that one today. Doing it properly will involve some major work on the drivers.

I could make a quick fix to get the join working, but then the back-end won't be clean the drivers API won't be robust (it's already too fragile). I'll do both at the same time, that shouldn't change Datajar's existing API, just bring in the joins for you.