| From: | Dominique Devienne <ddevienne(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Merlin Moncure <mmoncure(at)gmail(dot)com>, "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>, Nico Williams <nico(at)cryptonector(dot)com>, Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com>, Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>, Olleg Samoylov <splarv(at)ya(dot)ru>, "pgsql-generallists(dot)postgresql(dot)org" <pgsql-general(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Interesting case of IMMUTABLE significantly hurting performance |
| Date: | 2025-04-11 07:59:18 |
| Message-ID: | CAFCRh-_H5m_+z=JkKSpmrK=D6nLje1kG11tiCwkC2OXBSD5Ttw@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-general |
On Fri, Apr 11, 2025 at 5:52 AM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Merlin Moncure <mmoncure(at)gmail(dot)com> writes:
> > I guess the real problems here are lack of feedback on a number of fronts:
> > *) the server knows the function is not immutable but lets you create it
> > anyway, even though it can have negative downstream consequences
>
> That's debatable I think. If you know what you're doing, you're going
> to be annoyed by warnings telling you that you don't.
True, but that's typically what pragmas in the code are for then,
to explicitly suppress warnings.
Or a new option in the CREATE FUNCTION command. Better safe than sorry,
and I prefer useful "on-by-default" warnings for the non-experts,
which can be disabled, than silence.
PS: And FWIW, I removed all attributes from the functions I'm
writting, based on your aerlier advice Tom.
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Dimitrios Apostolou | 2025-04-11 11:38:26 | Re: pg_restore causing ENOSPACE on the WAL partition |
| Previous Message | Nico Williams | 2025-04-11 05:30:38 | Re: Interesting case of IMMUTABLE significantly hurting performance |