Re: PostgreSQL 10 initdb with locale de-x-icu fails on Windows Server 2012

At Fri, 1 Jul 2022 13:07:13 +0000, "ROSESOFT S. Hoffmann" <sh@rosesoft.de> wrote in
> initdb.exe .. -E UTF8 --locale=de-x-icu --text-search-config=german ..
>
> Error message:
> initdb: ungültiger Locale-Name »de-x-icu«

> According to https://www.postgresql.org/download/windows/ PostgreSQL
> 10 is supported by Windows Server 2012.

If you are unfortunately using PostgreSQL 10, it doesn't support ICU
collations as the default for databases.  It's a new feature of 15.

https://www.postgresql.org/docs/15/release-15.html
> - Allow ICU collations to be set as the default for clusters and
>   databases (Peter Eisentraut)
>   Previously, ICU collations could only be specified in CREATE
>   COLLATION and used with the COLLATE clause.

If you are using PG15, --icu-locale accompanied by
--locale-provider=icu instead of --locale will work for you.

https://www.postgresql.org/docs/devel/app-initdb.html

> Alternatively, the ICU library can be used to provide locale
> services. (Again, this only sets the default for subsequently created
> databases.) To select this option, specify --locale-provider=icu. To
> choose the specific ICU locale ID to apply, use the option
> --icu-locale. Note that for implementation reasons and to support
> legacy code, initdb will still select and initialize libc locale
> settings when the ICU locale provider is used.

regards.

--
Kyotaro Horiguchi
NTT Open Source Software Center