| From: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Zahir Lalani <ZahirLalani(at)oliver(dot)agency>, "pgsql-general(at)lists(dot)postgresql(dot)org" <pgsql-general(at)lists(dot)postgresql(dot)org> |
| Subject: | Odd Shortcut behaviour in PG14 |
| Date: | 2023-11-23 18:30:57 |
| Message-ID: | CAKFQuwbS+2_qLFQ1J6htwXo5gCpvTGW9cNMFsMZs3U=ScE274A@mail.gmail.com |
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| Lists: | pgsql-general |
On Thursday, November 23, 2023, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Zahir Lalani <ZahirLalani(at)oliver(dot)agency> writes:
> > Got a really weird problem with shortcut processing on one server.
>
> This question is unanswerable as given. You have not even defined
> what you mean by "fail" (error? wrong query result?), let alone
> provided enough detail for someone else to reproduce the problem.
>
The OP complains about the apparent inconsistent optimizing away of the SRF
function call of crypto_secretbox_open in the lateral when the join
predicate is known to be false.
I agree that they could make others lives easier by giving more evidence
and self-contained example; but the assertions being made are complete.
David J.
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