| From: | Jeff Davis <pgsql(at)j-davis(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Jeremy Schneider <schneider(at)ardentperf(dot)com>, Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>, Daniel Verite <daniel(at)manitou-mail(dot)org>, Noah Misch <noah(at)leadboat(dot)com>, Peter Eisentraut <peter(at)eisentraut(dot)org>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: [18] Policy on IMMUTABLE functions and Unicode updates |
| Date: | 2024-07-23 20:43:18 |
| Message-ID: | 8ed23fd387ef0b2cfc2a206bb104411b6c064bd7.camel@j-davis.com |
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| Lists: | pgsql-hackers |
On Tue, 2024-07-23 at 16:07 -0400, Tom Lane wrote:
> Well, it depends on which libc collation you have in mind. I was
> thinking of a libc-supplied C.UTF-8 collation, which I would expect
> to behave the same as pg_c_utf8, modulo which Unicode version it's
> based on.
Daniel Vérité documented[1] cases where the libc C.UTF-8 locale changed
the *sort* behavior, thereby affecting primary keys.
Regards,
Jeff Davis
[1]
https://www.postgresql.org/message-id/8a3dc06f-9b9d-4ed7-9a12-2070d8b0165f%40manitou-mail.org
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