Etsuro Fujita <fujita.ets...@lab.ntt.co.jp> writes: > (2019/02/28 0:52), Robert Haas wrote: >> On Tue, Feb 26, 2019 at 7:26 AM Etsuro Fujita >> <fujita.ets...@lab.ntt.co.jp> wrote: >>> The parallel safety of the final scan/join target is determined from the >>> grouping target, not that target, which [ is wrong ]
>> Your patch looks right to me. > I think it would be better for you to take this one. Could you? I concur with Robert that this is a brown-paper-bag-grade bug in 960df2a97. Please feel free to push (and don't forget to back-patch). The only really interesting question is whether it's worth adding a regression test for. I doubt it; the issue seems much too narrow. Usually the point of a regression test is to prevent re-introduction of the same/similar bug, but what class of bugs would you argue we'd be protecting against? regards, tom lane