So this patch has been in place for two weeks, the buildfarm has still got the measles, and we're entering the January commitfest with a lot of other work to get done. I realize that the two weeks were mostly holiday time, but it's time to have some urgency about clearing the buildfarm failures.
As best I understand, the remaining failures simply arise from an unstable regression test case and aren't teaching us anything of value. I propose that for the moment, we simply remove the failing query from join.sql. We can put it back when there's reason to think it will pass everywhere. regards, tom lane