Re: link that explain ICU_LOCALE locale concept about local variant code and keywords. - Mailing list pgsql-general

From jian he
Subject Re: link that explain ICU_LOCALE locale concept about local variant code and keywords.
Date
Msg-id CACJufxHLUTKHA2EeykFxi3cQiYxL_kxS9tDH42f1L3rmzD35eA@mail.gmail.com
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In response to link that explain ICU_LOCALE locale concept about local variant code and keywords.  (jian he <jian.universality@gmail.com>)
List pgsql-general

On Wed, May 25, 2022 at 1:52 PM jian he <jian.universality@gmail.com> wrote:

DROP DATABASE IF EXISTS dbicu;
CREATE DATABASE dbicu LOCALE_PROVIDER icu LOCALE 'en_US' ICU_LOCALE 'en-u-kf-upper' template 'template0';
\c dbicu
CREATE COLLATION upperfirst (provider = icu, locale = 'en-u-kf-upper');
CREATE TABLE icu(def text, en text COLLATE "en_US", upfirst text COLLATE upperfirst);
INSERT INTO icu VALUES ('a', 'a', 'a'), ('b','b','b'), ('A','A','A'), ('B','B','B');
SELECT def AS def FROM icu ORDER BY def;
SELECT def AS en FROM icu ORDER BY en;
SELECT def AS upfirst FROM icu ORDER BY upfirst;
SELECT def AS upfirst_explicit FROM icu ORDER BY en COLLATE upperfirst;
SELECT def AS en_x_explicit FROM icu ORDER BY def COLLATE "en-x-icu";

  • trying to replicate the above quoted command.
  • So I don't know ICU_LOCALE 'en-u-kf-upper'  the u and the kf refer to?
Even I followed  https://unicode-org.github.io/icu/userguide/locale/#the-locale-concept
  1.     Language code
  2.     Script code
  3.     Country code
  4.     Variant code
  5.     Keywords
So which website can I get the info about the "kf" and "u".

--
 I recommend David Deutsch's <<The Beginning of Infinity>>

  Jian




--
 I recommend David Deutsch's <<The Beginning of Infinity>>

  Jian


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