| From: | Peter Geoghegan <pg(at)bowt(dot)ie> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Klaudie Willis <Klaudie(dot)Willis(at)protonmail(dot)com>, PostgreSQL mailing lists <pgsql-bugs(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: When Update balloons memory |
| Date: | 2022-01-11 19:59:12 |
| Message-ID: | CAH2-WzkLUqdY3DT-Mz85hbNyWhBFETUvHsZUZ1J7ZjQ-b=ZV7A@mail.gmail.com |
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| Lists: | pgsql-bugs pgsql-general |
On Tue, Jan 11, 2022 at 11:54 AM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Pass NULL for that, per 6867f963e:
>
> https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=6867f963e#patch2
Will look into that.
> We'd have to back-patch that bit, but I don't see any problem
> with doing so.
But the back-patch fix will make index_unchanged_by_update return true
unconditionally (to avoid an ABI break). It won't actually do anything
with Vars, which, as I said, seems okay given the current way in which
we apply the hint.
--
Peter Geoghegan
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