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11.4-mdev-36389-indexed-text-column-wrong-result
mariadb/mysql-test/suite/binlog/r/binlog_stm_mysqlbinlog_collate_implicit.result
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

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RESET MASTER;
SET timestamp=1000000000;
#
# MDEV-30164 System variable for default collations
#
SET character_set_collations='utf8mb3=utf8mb3_bin,ucs2=ucs2_bin';
CREATE TABLE t1 (a VARCHAR(20));
DROP TABLE t1;
CREATE TABLE t1 (a VARCHAR(20) CHARACTER SET utf8mb4);
DROP TABLE t1;
CREATE TABLE t1 (a VARCHAR(20) CHARACTER SET utf8mb3 COLLATE utf8mb3_bin);
DROP TABLE t1;
CREATE TABLE t1 (a VARCHAR(20) CHARACTER SET utf8mb3);
INSERT INTO t1 VALUES ('a00');
INSERT INTO t1 VALUES (_utf8mb3'a01-utf8mb3');
INSERT INTO t1 VALUES (_utf8mb4'a01-utf8mb4');
PREPARE stmt FROM 'INSERT INTO t1 VALUES (?)';
EXECUTE stmt USING _utf8mb3'a02-utf8mb3';
EXECUTE stmt USING _utf8mb4'a02-utf8mb4';
EXECUTE stmt USING CONVERT('a03-utf8mb3' USING utf8mb3);
EXECUTE stmt USING CONVERT('a03-utf8mb4' USING utf8mb4);
EXECUTE stmt USING IF(0,CONVERT('a04-utf8mb3' USING utf8mb3),CONVERT('a03-utf8mb4' USING utf8mb4));
EXECUTE stmt USING IF(1,CONVERT('a04-utf8mb3' USING utf8mb3),CONVERT('a03-utf8mb4' USING utf8mb4));
DEALLOCATE PREPARE stmt;
DROP TABLE t1;
PREPARE stmt FROM 'CREATE TABLE t1 (a VARCHAR(20) CHARACTER SET utf8mb4)';
EXECUTE stmt;
DROP TABLE t1;
DEALLOCATE PREPARE stmt;
PREPARE stmt FROM 'CREATE TABLE t1 (a VARCHAR(20) CHARACTER SET utf8mb3)';
EXECUTE stmt;
DROP TABLE t1;
DEALLOCATE PREPARE stmt;
EXECUTE IMMEDIATE 'CREATE TABLE t1 (a VARCHAR(20) CHARACTER SET utf8mb4)';
DROP TABLE t1;
EXECUTE IMMEDIATE 'CREATE TABLE t1 (a VARCHAR(20) CHARACTER SET utf8mb3)';
DROP TABLE t1;
FLUSH LOGS;
--- ---- ---
/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=1*/;
/*!40019 SET @@session.max_delayed_threads=0*/;
/*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/;
DELIMITER /*!*/;
ROLLBACK/*!*/;
use `test`/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.pseudo_thread_id=999999999/*!*/;
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/*!*/;
SET @@session.sql_mode=#/*!*/;
SET @@session.auto_increment_increment=1, @@session.auto_increment_offset=1/*!*/;
/*!\C latin1 *//*!*/;
SET @@session.character_set_client=latin1,@@session.collation_connection=8,@@session.collation_server=#/*!*/;
SET @@session.lc_time_names=0/*!*/;
SET @@session.collation_database=DEFAULT/*!*/;
CREATE TABLE t1 (a VARCHAR(20))
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
DROP TABLE `t1` /* generated by server */
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.character_set_collations='utf8mb3=utf8mb3_bin,ucs2=ucs2_bin'/*!*/;
CREATE TABLE t1 (a VARCHAR(20) CHARACTER SET utf8mb4)
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
DROP TABLE `t1` /* generated by server */
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
CREATE TABLE t1 (a VARCHAR(20) CHARACTER SET utf8mb3 COLLATE utf8mb3_bin)
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
DROP TABLE `t1` /* generated by server */
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.character_set_collations='utf8mb3=utf8mb3_bin,ucs2=ucs2_bin'/*!*/;
CREATE TABLE t1 (a VARCHAR(20) CHARACTER SET utf8mb3)
/*!*/;
START TRANSACTION
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
INSERT INTO t1 VALUES ('a00')
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
COMMIT
/*!*/;
START TRANSACTION
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.character_set_collations='utf8mb3=utf8mb3_bin,ucs2=ucs2_bin'/*!*/;
INSERT INTO t1 VALUES (_utf8mb3'a01-utf8mb3')
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
COMMIT
/*!*/;
START TRANSACTION
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.character_set_collations='utf8mb3=utf8mb3_bin,ucs2=ucs2_bin'/*!*/;
INSERT INTO t1 VALUES (_utf8mb4'a01-utf8mb4')
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
COMMIT
/*!*/;
START TRANSACTION
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.character_set_collations='utf8mb3=utf8mb3_bin,ucs2=ucs2_bin'/*!*/;
INSERT INTO t1 VALUES ('a02-utf8mb3')
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
COMMIT
/*!*/;
START TRANSACTION
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.character_set_collations='utf8mb3=utf8mb3_bin,ucs2=ucs2_bin'/*!*/;
INSERT INTO t1 VALUES ('a02-utf8mb4')
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
COMMIT
/*!*/;
START TRANSACTION
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.character_set_collations='utf8mb3=utf8mb3_bin,ucs2=ucs2_bin'/*!*/;
INSERT INTO t1 VALUES ('a03-utf8mb3')
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
COMMIT
/*!*/;
START TRANSACTION
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.character_set_collations='utf8mb3=utf8mb3_bin,ucs2=ucs2_bin'/*!*/;
INSERT INTO t1 VALUES ('a03-utf8mb4')
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
COMMIT
/*!*/;
START TRANSACTION
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.character_set_collations='utf8mb3=utf8mb3_bin,ucs2=ucs2_bin'/*!*/;
INSERT INTO t1 VALUES ('a03-utf8mb4')
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
COMMIT
/*!*/;
START TRANSACTION
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.character_set_collations='utf8mb3=utf8mb3_bin,ucs2=ucs2_bin'/*!*/;
INSERT INTO t1 VALUES ('a04-utf8mb3')
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
COMMIT
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
DROP TABLE `t1` /* generated by server */
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.character_set_collations='utf8mb3=utf8mb3_bin,ucs2=ucs2_bin'/*!*/;
CREATE TABLE t1 (a VARCHAR(20) CHARACTER SET utf8mb4)
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
DROP TABLE `t1` /* generated by server */
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.character_set_collations='utf8mb3=utf8mb3_bin,ucs2=ucs2_bin'/*!*/;
CREATE TABLE t1 (a VARCHAR(20) CHARACTER SET utf8mb3)
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
DROP TABLE `t1` /* generated by server */
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.character_set_collations='utf8mb3=utf8mb3_bin,ucs2=ucs2_bin'/*!*/;
CREATE TABLE t1 (a VARCHAR(20) CHARACTER SET utf8mb4)
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
DROP TABLE `t1` /* generated by server */
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
SET @@session.character_set_collations='utf8mb3=utf8mb3_bin,ucs2=ucs2_bin'/*!*/;
CREATE TABLE t1 (a VARCHAR(20) CHARACTER SET utf8mb3)
/*!*/;
SET TIMESTAMP=1000000000/*!*/;
DROP TABLE `t1` /* generated by server */
/*!*/;
DELIMITER ;
# End of log file
ROLLBACK /* added by mysqlbinlog */;
/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
/*!50530 SET @@SESSION.PSEUDO_SLAVE_MODE=0*/;
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