| From: | "Andrey M(dot) Borodin" <x4mmm(at)yandex-team(dot)ru> |
|---|---|
| To: | Sergey Prokhorenko <sergeyprokhorenko(at)yahoo(dot)com(dot)au> |
| Cc: | Jelte Fennema-Nio <postgres(at)jeltef(dot)nl>, pgsql-hackers mailing list <pgsql-hackers(at)postgresql(dot)org>, Aleksander Alekseev <aleksander(at)timescale(dot)com>, Przemysław Sztoch <przemyslaw(at)sztoch(dot)pl>, Nikolay Samokhvalov <nik(at)postgres(dot)ai>, "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>, Nick Babadzhanian <pgnickb(at)gmail(dot)com>, Mat Arye <mat(at)timescaledb(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Daniel Gustafsson <daniel(at)yesql(dot)se>, Matthias van de Meent <boekewurm+postgres(at)gmail(dot)com>, Nikolay Samokhvalov <samokhvalov(at)gmail(dot)com>, "Kyzer Davis (kydavis)" <kydavis(at)cisco(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, "brad(at)peabody(dot)io" <brad(at)peabody(dot)io>, Kirk Wolak <wolakk(at)gmail(dot)com> |
| Subject: | Re: UUID v7 |
| Date: | 2024-01-30 09:56:10 |
| Message-ID: | 72C1E7CB-E2EC-46CF-AD2C-B3180CED885B@yandex-team.ru |
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| Lists: | pgsql-hackers |
> On 30 Jan 2024, at 12:28, Sergey Prokhorenko <sergeyprokhorenko(at)yahoo(dot)com(dot)au> wrote:
>
>
> I think this phrase is outdated: "This function can optionally accept a timestamp used instead of current time.
> This allows implementation of k-way sotable identifiers.”
Fixed.
> This phrase is wrong: "Both functions return a version 4 (random) UUID.”
This applies to functions gen_random_uuid() and uuidv4().
>
> For this phrase the reason is unclear and the phrase is most likely incorrect:
> if large batches of UUIDs are generated at the
> + same time it's possible that some UUIDs will store a time that is slightly later
> + than their actual generation time
I’ve rewritten this phrase, hope it’s more clear now.
Best regards, Andrey Borodin.
| Attachment | Content-Type | Size |
|---|---|---|
| v16-0001-Implement-UUID-v7.patch | application/octet-stream | 16.5 KB |
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