From: | Bruce Momjian <bruce(at)momjian(dot)us> |
---|---|
To: | "Daniel Westermann (DWE)" <daniel(dot)westermann(at)dbi-services(dot)com> |
Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "pgsql-docs(at)lists(dot)postgresql(dot)org" <pgsql-docs(at)lists(dot)postgresql(dot)org> |
Subject: | Re: Incorrect mention of number of columns? |
Date: | 2023-11-03 17:08:50 |
Message-ID: | ZUUpIt9f-31FVw0c@momjian.us |
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Lists: | pgsql-docs |
On Fri, Nov 3, 2023 at 05:04:46PM +0000, Daniel Westermann (DWE) wrote:
> >"Daniel Westermann (DWE)" <daniel(dot)westermann(at)dbi-services(dot)com> writes:
> >>> Yeah, but populating it would not (unless many of the columns were
> >>> NULL).
>
> >> Ok, but then should the documentation be more precise? It seems a bit odd to
> let users create such a table without at least a warning.
>
> >Given the impact of NULLs, and the fact that usually tables have some
> >variable-width columns, I doubt that a creation-time warning could be
> >accurate enough to be useful.
>
> I am not speaking about a warning at creation time, but rather a warning in the
> docs. Something like: Although a table with e.g. 1600 bigint columns can be
> created, creating a tuple of more than 8160 bytes will fail.
It is in the "limits" docs:
https://www.postgresql.org/docs/current/limits.html
--
Bruce Momjian <bruce(at)momjian(dot)us> https://momjian.us
EDB https://enterprisedb.com
Only you can decide what is important to you.
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