On Wed, 2023-04-26 at 21:20 +0000, PG Doc comments form wrote:
> Page: https://www.postgresql.org/docs/15/collation.html
>
> This page states:
>
> Observe how in the traditional ICU locale naming system, the root locale
> is selected by an empty string.
>
> CREATE COLLATION latinlast (provider = icu, locale =
> 'en-u-kr-grek-latn');
> CREATE COLLATION latinlast (provider = icu, locale =
> 'en@colReorder=grek-latn');
>
> Neither of the locales are empty strings.
The sentence with the "empty string" refers to the example that was before:
CREATE COLLATION "und-u-co-emoji-x-icu" (provider = icu, locale = '@collation=emoji');
There is nothing, that is an ampty string, before the "@".
Yours,
Laurenz Albe