| From: | Aleksander Alekseev <aleksander(at)timescale(dot)com> |
|---|---|
| To: | pgsql-hackers mailing list <pgsql-hackers(at)postgresql(dot)org> |
| Cc: | "Andrey M(dot) Borodin" <x4mmm(at)yandex-team(dot)ru>, Nikolay Samokhvalov <nik(at)postgres(dot)ai>, "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com>, Przemysław Sztoch <przemyslaw(at)sztoch(dot)pl>, Sergey Prokhorenko <sergeyprokhorenko(at)yahoo(dot)com(dot)au>, Jelte Fennema-Nio <postgres(at)jeltef(dot)nl>, 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: | 2024-01-24 13:16:23 |
| Message-ID: | CAJ7c6TPCSprWwVNdOB==pgKZPqO5q=HRgmU7zmYqz9Dz5ffVYw@mail.gmail.com |
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| Lists: | pgsql-hackers |
Hi,
> Values that violate named invariants should be rejected with an error.
To clarify, I don't think we should bother about the precision part.
"Equals" in the example above means "equal within UUIDv7 precision",
same for "more" and "less". However, years 2977 BC and 5943 AC are
clearly not equal, thus 2977 BC should be rejected as an invalid value
for UUIDv7.
--
Best regards,
Aleksander Alekseev
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