Re: First draft of PG 17 release notes

On Thu, May 9, 2024 at 06:00:24PM +0800, jian he wrote:
> On Thu, May 9, 2024 at 12:04 PM Bruce Momjian <bruce(at)momjian(dot)us> wrote:
> >
> > I have committed the first draft of the PG 17 release notes; you can
> > see the results here:
> >
> > https://momjian.us/pgsql_docs/release-17.html
> >
>
> another potential incompatibilities issue:
> ALTER TABLE DROP PRIMARY KEY
>
> see:
> https://www.postgresql.org/message-id/202404181849.6frtmajobe27%40alvherre.pgsql

I see it now, and I see Alvaro Herrera saying:

https://www.postgresql.org/message-id/202404181849.6frtmajobe27%40alvherre.pgsql

> I wonder is there any incompatibility issue, or do we need to say something
> about the new behavior when dropping a key column?

--> Umm, yeah, maybe we should document it in ALTER TABLE DROP PRIMARY KEY
--> and in the release notes to note the different behavior.

However, I don't see it mentioned as a release note item in the commit
message or mentioned in our docs. I suppose the release note text would
be:

Removing a PRIMARY KEY will remove the NOT NULL column specification

Previously the NOT NULL specification would be retained.

Do we have agreement that we want this release note item?

--
Bruce Momjian <bruce(at)momjian(dot)us> https://momjian.us
EDB https://enterprisedb.com

Only you can decide what is important to you.