| From: | Alexander Korotkov <aekorotkov(at)gmail(dot)com> | 
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> | 
| Cc: | Pavel Borisov <pashkin(dot)elfe(at)gmail(dot)com>, Postgres hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> | 
| Subject: | Re: Fortify float4 and float8 regression tests by ordering test results | 
| Date: | 2025-04-22 16:22:10 | 
| Message-ID: | CAPpHfdsjK1C7t1SpiRGjFvoFds-XhXqMToRsrcgt4t1c9+OL6A@mail.gmail.com | 
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| Lists: | pgsql-hackers | 
On Tue, Apr 22, 2025 at 7:20 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Alexander Korotkov <aekorotkov(at)gmail(dot)com> writes:
> > I'd like to add that float4.out not only assumes that insert-ordering is
> > preserved (this could be more-or-less portable between table AMs).  It also
> > assumes the way UPDATE moves updated rows.  That seems quite
> > heap-specific.  You can see in the following fragment, updated rows jump to
> > the bottom.
>
> I'd be willing to consider a policy that we don't want to depend on
> exactly where UPDATE moves rows to.  The proposed patch is not that,
> however.
OK, that makes sense for me.
------
Regards,
Alexander Korotkov
Supabase
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