Re: UUID v7

Masahiko Sawada <sawada.mshk@gmail.com>

From: Masahiko Sawada <sawada.mshk@gmail.com>
To: Andrey Borodin <x4mmm@yandex-team.ru>, Peter Eisentraut <peter@eisentraut.org>
Cc: Jelte Fennema-Nio <postgres@jeltef.nl>, Sergey Prokhorenko <sergeyprokhorenko@yahoo.com.au>, Przemysław Sztoch <przemyslaw@sztoch.pl>, Michael Paquier <michael@paquier.xyz>, Aleksander Alekseev <aleksander@timescale.com>, pgsql-hackers mailing list <pgsql-hackers@postgresql.org>, "David G. Johnston" <david.g.johnston@gmail.com>, Mat Arye <mat@timescaledb.com>, Matthias van de Meent <boekewurm+postgres@gmail.com>, Nikolay Samokhvalov <samokhvalov@gmail.com>, Junwang Zhao <zhjwpku@gmail.com>, Stepan Neretin <sncfmgg@gmail.com>
Date: 2024-11-27T18:24:01Z
Lists: pgsql-hackers
On Tue, Nov 26, 2024 at 7:11 PM Andrey Borodin <x4mmm@yandex-team.ru> wrote:
>
>
>
> > On 27 Nov 2024, at 04:11, Masahiko Sawada <sawada.mshk@gmail.com> wrote:
> >
> > On Tue, Nov 26, 2024 at 1:55 PM Jelte Fennema-Nio <postgres@jeltef.nl> wrote:
> >>
> >> On Tue, 26 Nov 2024 at 21:48, Sergey Prokhorenko
> >> <sergeyprokhorenko@yahoo.com.au> wrote:
> >>> gen_uuidv7() is OK
> >>
> >> I'd very much prefer to not have a gen_ or get_ prefix as argued before[1][2].
> >>
> >> My vote is still for simply uuidv7() and uuidv4()
> >>
> >>> uuid-ossp is outdated, slow and not supported by the author. UUIDv7 is the renaissance of UUIDs. So we should not depend on legacy technology names
> >>
> >> agreed
> >>
> >
> > It seems that we agreed to use 'uuidv7' instead of 'uuid_v7()'. There
> > is discussion whether we should add 'gen_' or 'get_' but let's go back
> > to the previously-agreed function name 'uuidv7()' for now. We can
> > rename it later if we find a better name.
>
> I think uuidv7() is kind of consensual.
>
> > I've attached the new version patch that incorporated all comments and
> > renamed the functions. Also I avoided using 'if defined(__darwin__) ||
> > defined(_MSC_VER)' twice.
>
> Good, I think now it's a bit easier to understand those 2 bits.
>

Thanks.

I'm going to push the v39 patch (after self review again), barring any
objections and further comments.

Regards,

-- 
Masahiko Sawada
Amazon Web Services: https://aws.amazon.com



Commits

  1. Fix timestamp overflow in UUIDv7 implementation.

  2. Add UUID version 7 generation function.

  3. Add some UUID support functions