| From: | Alexander Korotkov <aekorotkov(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Junwang Zhao <zhjwpku(at)gmail(dot)com>, Andrei Lepikhov <lepihov(at)gmail(dot)com>, "pgsql-bugs(at)lists(dot)postgresql(dot)org" <pgsql-bugs(at)lists(dot)postgresql(dot)org>, Tomas Vondra <tomas(at)vondra(dot)me> |
| Subject: | Re: Incorrect calculation of path fraction value in MergeAppend |
| Date: | 2025-05-18 20:47:15 |
| Message-ID: | CAPpHfdtVDr-2E2qfJwVhw0Gu8JBrmN=uG9eAkXF==hq8Q7w6yA@mail.gmail.com |
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| Lists: | pgsql-bugs |
On Sun, May 18, 2025 at 5:29 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>
> Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> writes:
> > Personally I can see getting this in 18beta2 without too much additional
> > arguing for it. But for 15-17 you'd need a lot more support than is
> > evident in this thread.
>
> +1. The bar for causing plan changes in back branches is very high.
> Unless you can show that the buggy behavior is causing wrong answers,
> it's usually best to leave it alone.
Makes sense. Thank you for the clarification. I'll push this to the
master only.
------
Regards,
Alexander Korotkov
Supabase
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