Re: BUG #19099: Conditional DELETE from partitioned table with non-updatable partition raises internal error

From: Tender Wang <tndrwang(at)gmail(dot)com>
To: Amit Langote <amitlangote09(at)gmail(dot)com>
Cc: David Rowley <dgrowleyml(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Kirill Reshke <reshkekirill(at)gmail(dot)com>, jian he <jian(dot)universality(at)gmail(dot)com>, exclusion(at)gmail(dot)com, pgsql-bugs(at)lists(dot)postgresql(dot)org
Subject: Re: BUG #19099: Conditional DELETE from partitioned table with non-updatable partition raises internal error
Date: 2025-11-07 06:35:47
Message-ID: CAHewXNkq8Vm2KFiw2pfzGUEp+3-_cJMcjCygNMTFD_8sPn6EGA@mail.gmail.com
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Amit Langote <amitlangote09(at)gmail(dot)com> 于2025年11月7日周五 14:04写道:

> Hi,
>
> On Fri, Nov 7, 2025 at 10:01 AM Tender Wang <tndrwang(at)gmail(dot)com> wrote:
> > Amit Langote <amitlangote09(at)gmail(dot)com> 于2025年11月6日周四 18:00写道:
> >> So for back branches, I’d propose sticking with the smaller
> >> executor-side fix and perhaps revisiting the planner behavior
> >> separately if we ever want to refine handling of pruned partitions or
> >> dummy roots. I understand, as was reported upthread, that the EXPLAIN
> >> VERBOSE output isn’t very consistent with that patch even though the
> >> internal error goes away. Making sense of the output differences
> >> requires knowing that the targetlist population behavior differs
> >> depending on whether enable_partition_pruning is on or off as I
> >> described above.
> >
> > The executor-side fix works for me
>
> Thanks for checking.
>
> > and the test case should be added to your patch.
> > Should we add some comments to explain the output difference in EXPLAIN
> VERBOSE
> > if enable_partition_pruning is set to a different value?
>
> I added some in the v2 patch I just posted.
>

I run tests in regress and file_fdw, no failed cases.
No objections from me.

--
Thanks,
Tender Wang

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