Greg Rychlewski <greg(dot)rychlewski(at)gmail(dot)com> writes:
> I was testing creating a rule that uses RETURNING and noticed a difference
> between the extended query protocol and the simple query protocol. In the
> former, RETURNING is ignored (at least in my case) and the latter it is
> respected:
I think this might be the same issue recently discussed here:
https://www.postgresql.org/message-id/flat/1df84daa-7d0d-e8cc-4762-85523e45e5e7%40mailbox.org
That discussion was leaning towards the idea that the cost-benefit
of fixing this isn't attractive and we should just document the
discrepancy. However, with two reports now, maybe we should rethink.
regards, tom lane