Alexander Barkov 75f25e4ca7
MDEV-30164 System variable for default collations ...
This patch adds a way to override default collations
(or "character set collations") for desired character sets.
The SQL standard says:
> Each collation known in an SQL-environment is applicable to one
> or more character sets, and for each character set, one or more
> collations are applicable to it, one of which is associated with
> it as its character set collation.
In MariaDB, character set collations has been hard-coded so far,
e.g. utf8mb4_general_ci has been a hard-coded character set collation
for utf8mb4.
This patch allows to override (globally per server, or per session)
character set collations, so for example, uca1400_ai_ci can be set as a
character set collation for Unicode character sets
(instead of compiled xxx_general_ci).
The array of overridden character set collations is stored in a new
(session and global) system variable @@character_set_collations and
can be set as a comma separated list of charset=collation pairs, e.g.:
SET @@character_set_collations='utf8mb3=uca1400_ai_ci,utf8mb4=uca1400_ai_ci';
The variable is empty by default, which mean use the hard-coded
character set collations (e.g. utf8mb4_general_ci for utf8mb4).
The variable can also be set globally by passing to the server startup command
line, and/or in my.cnf.
2023-07-17 14:56:17 +04:00
2022-05-26 11:23:13 +10:00
2023-04-04 16:05:55 +04:00
2023-02-03 11:57:45 +03:00
2021-02-03 02:22:47 +02:00
2022-11-01 16:33:00 +01:00
2022-01-31 22:57:39 +02:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-06-19 09:38:19 +01:00
2021-05-17 12:48:37 +05:30
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-06-19 09:38:19 +01:00
2023-06-19 09:38:19 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-04-21 18:13:31 +04:00
2021-05-19 06:48:36 +02:00
2023-04-21 18:13:31 +04:00
2021-05-19 06:48:36 +02:00
2022-06-16 10:38:35 +04:00
2022-09-20 16:53:20 +03:00
2022-06-16 10:38:35 +04:00
2023-04-21 18:13:31 +04:00
2021-05-19 06:48:36 +02:00
2023-04-21 18:13:31 +04:00
2022-09-20 16:53:20 +03:00
2021-05-19 06:48:36 +02:00
2021-05-19 06:48:36 +02:00
2021-05-19 06:48:36 +02:00
2022-09-20 16:53:20 +03:00
2021-05-19 06:48:36 +02:00
2022-09-20 16:53:20 +03:00
2023-02-06 14:31:48 +01:00
2023-02-03 16:27:16 +02:00
2022-09-12 22:10:39 +04:00
2022-09-21 09:33:07 +03:00
2023-02-06 14:31:48 +01:00
2020-10-29 15:16:53 +01:00
2021-05-10 09:36:40 +05:30
2023-02-06 14:31:48 +01:00
2023-02-05 22:02:30 +01:00
2023-02-05 22:02:30 +01:00
2023-02-06 14:31:48 +01:00
2020-08-25 10:15:04 +03:00
2022-05-15 23:28:06 +04:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-03 10:56:40 +03:00
2021-01-25 18:41:27 +02:00
2021-03-18 08:02:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2022-03-23 16:42:43 +02:00
2020-11-11 11:15:11 +02:00
2021-03-11 20:09:34 +02:00
2020-11-11 11:15:11 +02:00
2021-05-19 22:54:13 +02:00
2023-02-03 11:57:50 +03:00
2022-06-27 11:59:20 +02:00
2023-01-11 17:55:56 +02:00
2021-02-20 11:58:58 +02:00
2020-11-04 16:55:36 +02:00
2022-02-24 22:41:23 +05:30
2023-02-03 11:57:45 +03:00
2022-02-24 22:41:23 +05:30
2021-07-01 10:31:08 +03:00
2022-03-02 16:53:04 +02:00
2020-10-26 17:09:01 +02:00
2020-10-15 17:04:56 +03:00
2020-10-26 17:09:01 +02:00
2021-09-23 08:34:50 +02:00
2022-06-27 11:59:20 +02:00
2023-02-03 11:57:50 +03:00
2021-08-31 13:55:02 +03:00
2022-06-27 11:59:20 +02:00
2021-10-26 00:29:27 +04:00
2022-07-28 10:33:26 +03:00
2023-07-04 13:02:49 +10:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2022-07-06 15:42:21 +04:00
2022-11-01 16:33:00 +01:00
2023-02-06 14:31:48 +01:00
2023-01-23 08:39:41 +11:00
2022-07-06 15:42:21 +04:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-03 00:00:35 +03:00
2023-01-30 15:24:15 +02:00
2023-02-06 14:31:48 +01:00
2020-12-10 08:45:20 +01:00
2021-03-04 22:50:00 +05:30
2022-04-20 00:30:22 +05:30
2022-04-20 00:30:22 +05:30
2022-07-26 22:27:29 +07:00
2023-05-03 21:44:57 +03:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2022-11-01 16:33:00 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2020-10-23 12:20:17 +04:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2022-10-21 14:49:05 -06:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2020-10-28 10:56:38 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-03 11:57:50 +03:00
2022-11-01 16:33:00 +01:00
2022-11-01 16:33:00 +01:00
2022-11-01 16:33:00 +01:00
2022-11-01 16:33:00 +01:00
2023-02-06 14:31:48 +01:00
2020-10-30 11:15:30 +02:00
2022-07-06 15:42:21 +04:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2022-10-04 12:28:03 +02:00
2022-10-04 12:28:03 +02:00
2023-01-30 15:24:15 +02:00
2023-02-06 14:31:48 +01:00
2022-09-12 22:10:39 +04:00
2021-07-15 16:27:31 +07:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-03 11:57:45 +03:00
2023-04-05 16:16:19 +04:00
2023-02-03 11:57:45 +03:00
2023-02-03 16:27:16 +02:00
2022-02-25 16:24:13 +02:00
2023-06-05 20:15:15 +02:00
2023-03-24 12:54:05 +11:00
2023-07-17 14:56:17 +04:00
2023-07-07 09:05:33 +10:00
2021-06-16 15:44:18 +10:00
2023-07-17 14:56:17 +04:00
2023-06-08 14:09:21 +03:00
2023-02-03 11:57:45 +03:00
2023-01-18 16:45:59 +01:00
2020-08-10 11:58:56 +02:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2023-02-06 14:31:48 +01:00
2022-04-12 01:22:51 +05:30
2023-04-12 11:04:29 +10:00
2023-04-12 11:04:29 +10:00
2023-04-12 11:04:29 +10:00
2023-04-12 11:04:29 +10:00
2020-08-25 10:15:04 +03:00
2021-12-27 13:28:25 +01:00
2020-10-05 10:34:01 +03:00
2021-01-21 11:41:29 +02:00
2021-04-20 08:24:14 +03:00
75f25e4ca7