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75f25e4ca7
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.
97 lines
3.4 KiB
Text
97 lines
3.4 KiB
Text
include/master-slave.inc
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[connection master]
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set time_zone='+03:00';
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set timestamp=unix_timestamp('2011-01-01 01:01:01') + 0.123456;
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create table t1 (a timestamp(4) NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, b varchar(100), c datetime(2));
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insert t1 (b,c) values (now(6), now(6));
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insert t1 values ('2010-10-10 10:10:10.101010','2010-10-10 10:10:10.101010','2010-10-10 10:10:10.101010');
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set timestamp=unix_timestamp('2022-02-02 02:02:02') + 0.654321;
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insert t1 (b,c) values (now(), now());
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insert t1 (b,c) values (0,0);
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insert t1 (a,b,c) values (0,0,now(6));
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select * from t1;
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a b c
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2011-01-01 01:01:01.1234 2011-01-01 01:01:01.123456 2011-01-01 01:01:01.12
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2010-10-10 10:10:10.1010 2010-10-10 10:10:10.101010 2010-10-10 10:10:10.10
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2022-02-02 02:02:02.6543 2022-02-02 02:02:02 2022-02-02 02:02:02.00
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2022-02-02 02:02:02.6543 0 0000-00-00 00:00:00.00
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0000-00-00 00:00:00.0000 0 2022-02-02 02:02:02.65
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connection slave;
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connection slave;
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set time_zone='+03:00';
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select * from t1;
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a b c
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2011-01-01 01:01:01.1234 2011-01-01 01:01:01.123456 2011-01-01 01:01:01.12
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2010-10-10 10:10:10.1010 2010-10-10 10:10:10.101010 2010-10-10 10:10:10.10
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2022-02-02 02:02:02.6543 2022-02-02 02:02:02 2022-02-02 02:02:02.00
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2022-02-02 02:02:02.6543 0 0000-00-00 00:00:00.00
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0000-00-00 00:00:00.0000 0 2022-02-02 02:02:02.65
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connection master;
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drop table t1;
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include/rpl_end.inc
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/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=1*/;
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/*!40019 SET @@session.max_delayed_threads=0*/;
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/*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/;
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DELIMITER /*!*/;
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ROLLBACK/*!*/;
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use `test`/*!*/;
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SET TIMESTAMP=1293832861/*!*/;
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SET @@session.pseudo_thread_id=999999999/*!*/;
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SET @@session.foreign_key_checks=1, @@session.sql_auto_is_null=0, @@session.unique_checks=1, @@session.autocommit=1, @@session.check_constraint_checks=1, @@session.sql_if_exists=0, @@session.explicit_defaults_for_timestamp=1, @@session.system_versioning_insert_history=0/*!*/;
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SET @@session.sql_mode=1411383296/*!*/;
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SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*!*/;
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/*!\C latin1 *//*!*/;
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SET @@session.character_set_client=latin1,@@session.collation_connection=8,@@session.collation_server=8/*!*/;
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SET @@session.lc_time_names=0/*!*/;
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SET @@session.collation_database=DEFAULT/*!*/;
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create table t1 (a timestamp(4) NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, b varchar(100), c datetime(2))
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/*!*/;
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START TRANSACTION
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/*!*/;
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SET TIMESTAMP=1293832861.123456/*!*/;
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SET @@session.time_zone='+03:00'/*!*/;
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insert t1 (b,c) values (now(6), now(6))
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/*!*/;
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SET TIMESTAMP=1293832861/*!*/;
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COMMIT
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/*!*/;
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START TRANSACTION
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/*!*/;
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SET TIMESTAMP=1293832861/*!*/;
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insert t1 values ('2010-10-10 10:10:10.101010','2010-10-10 10:10:10.101010','2010-10-10 10:10:10.101010')
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/*!*/;
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SET TIMESTAMP=1293832861/*!*/;
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COMMIT
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/*!*/;
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START TRANSACTION
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/*!*/;
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SET TIMESTAMP=1643756522.654321/*!*/;
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insert t1 (b,c) values (now(), now())
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/*!*/;
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SET TIMESTAMP=1643756522/*!*/;
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COMMIT
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/*!*/;
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START TRANSACTION
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/*!*/;
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SET TIMESTAMP=1643756522.654321/*!*/;
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insert t1 (b,c) values (0,0)
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/*!*/;
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SET TIMESTAMP=1643756522/*!*/;
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COMMIT
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/*!*/;
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START TRANSACTION
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/*!*/;
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SET TIMESTAMP=1643756522.654321/*!*/;
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insert t1 (a,b,c) values (0,0,now(6))
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/*!*/;
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SET TIMESTAMP=1643756522/*!*/;
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COMMIT
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/*!*/;
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SET TIMESTAMP=1643756522/*!*/;
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DROP TABLE `t1` /* generated by server */
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/*!*/;
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DELIMITER ;
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# End of log file
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ROLLBACK /* added by mysqlbinlog */;
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/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
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/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;
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