Re: COLLATION update in 13.1

Thanks. I did \l before which gives:

List of databases
Name | Owner | Encoding | Collate | Ctype | ICU Locale
| Locale Provider | Access privileges
------------+----------+----------+-------------+-------------+------------+-----------------+-----------------------
bar | foo | UTF8 | de_DE.UTF-8 | de_DE.UTF-8 |
| libc |
customers | sisis | UTF8 | de_DE.UTF-8 | de_DE.UTF-8 |
| libc |
...

But why the ALTER statement needs the spelling different as the output of
\l :

sisis=# ALTER COLLATION "de_DE.UTF-8" REFRESH VERSION;
ERROR: collation "de_DE.UTF-8" for encoding "UTF8" does not exist

sisis=# ALTER COLLATION "de_DE.utf8" REFRESH VERSION;
NOTICE: version has not changed
ALTER COLLATION

?

On Mon, Feb 24, 2025 at 12:57 PM Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at>
wrote:

> On Mon, 2025-02-24 at 12:53 +0100, Matthias Apitz wrote:
> > If I understand the other reply from Laurenz Albe right, the correct
> procedure would be:
> >
> > pgsql -Usisis sisis
> > sisis=# REINDEX (VERBOSE) DATABASE sisis;
> > sisis=# ALTER COLLATION "de_DE.utf8" REFRESH VERSION;
> > ALTER COLLATION
> >
> > Correct?
>
> That REINDEX is certainly correct, even though it rebuilds way more
> indexes than necessary.
>
> If the ALTER COLLATION statement is correct or not depends on the
> collation you are using. You could look at "\l" and "pg_collation"
> to get the name right.
>
> Yours,
> Laurenz Albe
>
> --
>
> *E-Mail Disclaimer*
> Der Inhalt dieser E-Mail ist ausschliesslich fuer den
> bezeichneten Adressaten bestimmt. Wenn Sie nicht der vorgesehene Adressat
> dieser E-Mail oder dessen Vertreter sein sollten, so beachten Sie bitte,
> dass jede Form der Kenntnisnahme, Veroeffentlichung, Vervielfaeltigung
> oder
> Weitergabe des Inhalts dieser E-Mail unzulaessig ist. Wir bitten Sie, sich
> in diesem Fall mit dem Absender der E-Mail in Verbindung zu setzen.
>
> *CONFIDENTIALITY NOTICE & DISCLAIMER
> *This message and any attachment are
> confidential and may be privileged or otherwise protected from disclosure
> and solely for the use of the person(s) or entity to whom it is intended.
> If you have received this message in error and are not the intended
> recipient, please notify the sender immediately and delete this message
> and
> any attachment from your system. If you are not the intended recipient, be
> advised that any use of this message is prohibited and may be unlawful,
> and
> you must not copy this message or attachment or disclose the contents to
> any other person.
>