| 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: | Merlin Moncure <mmoncure(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 04:13:37 |
| Message-ID: | CAKFQuwZ-cd6w5-EqM6m+T-W08TCzkS624=w5+gqeDT751_T+EA@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-general |
On Thursday, April 10, 2025, 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.
>
So long as you use atomic SQL functions I suspect it is possible to use the
dependency data to get the volatility of the used functions and compare
them to the volatility of the UDF.
David J.
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Laurenz Albe | 2025-04-11 05:15:44 | Re: Interesting case of IMMUTABLE significantly hurting performance |
| Previous Message | Daniel Westermann (DWE) | 2025-04-11 03:57:03 | Re: Meson and Numa: C header not found |