| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
| Cc: | Matthias Apitz <guru(at)unixarea(dot)de>, Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>, "pgsql-general(at)lists(dot)postgresql(dot)org" <pgsql-general(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: existing row not found by SELECT ... WHERE CTID = ? |
| Date: | 2022-05-26 16:02:35 |
| Message-ID: | 2305902.1653580955@sss.pgh.pa.us |
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| Lists: | pgsql-general |
"David G. Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> writes:
> On Thursday, May 26, 2022, Matthias Apitz <guru(at)unixarea(dot)de> wrote:
>> Is there any way to get with the old CTID to the row, for example with
>> the old CTID to the new one which the row now has after the update of the
>> row?
> No, there is no link between old and new in the main table.
There is a forward link from the old CTID to the new, but we don't
provide any user-accessible way to use it. I wonder though if the
OP should be considering using SELECT FOR UPDATE in his cursor,
so that it'd automatically chain up to the newest row version.
regards, tom lane
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