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2fdb556e04
This patch changes the main name of 3 byte character set from utf8 to utf8mb3. New old_mode UTF8_IS_UTF8MB3 is added and set TRUE by default, so that utf8 would mean utf8mb3. If not set, utf8 would mean utf8mb4.
98 lines
2.6 KiB
Plaintext
98 lines
2.6 KiB
Plaintext
select database();
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database()
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test
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select charset(database());
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charset(database())
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utf8mb3
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select database() = "test";
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database() = "test"
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1
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select database() = _utf8"test";
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database() = _utf8"test"
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1
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select database() = _latin1"test";
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database() = _latin1"test"
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1
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select user() like "%@%";
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user() like "%@%"
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1
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select user() like _utf8"%@%";
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user() like _utf8"%@%"
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1
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select user() like _latin1"%@%";
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user() like _latin1"%@%"
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1
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select charset(user());
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charset(user())
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utf8mb3
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select version()>="03.23.29";
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version()>="03.23.29"
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1
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select version()>=_utf8"03.23.29";
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version()>=_utf8"03.23.29"
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1
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select version()>=_latin1"03.23.29";
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version()>=_latin1"03.23.29"
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1
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select charset(version());
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charset(version())
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utf8mb3
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explain extended select database(), user();
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id select_type table type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL No tables used
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Warnings:
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Note 1003 select database() AS `database()`,user() AS `user()`
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create table t1 (version char(60)) select database(), user(), version() as 'version';
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`database()` varchar(34) CHARACTER SET utf8mb3 DEFAULT NULL,
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`user()` varchar(384) CHARACTER SET utf8mb3 DEFAULT NULL,
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`version` char(60) DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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drop table t1;
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select charset(charset(_utf8'a')), charset(collation(_utf8'a'));
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charset(charset(_utf8'a')) charset(collation(_utf8'a'))
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utf8mb3 utf8mb3
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select collation(charset(_utf8'a')), collation(collation(_utf8'a'));
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collation(charset(_utf8'a')) collation(collation(_utf8'a'))
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utf8mb3_general_ci utf8mb3_general_ci
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create table t1 select charset(_utf8'a'), collation(_utf8'a');
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`charset(_utf8'a')` varchar(64) CHARACTER SET utf8mb3 DEFAULT NULL,
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`collation(_utf8'a')` varchar(64) CHARACTER SET utf8mb3 DEFAULT NULL
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) ENGINE=MyISAM DEFAULT CHARSET=latin1
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drop table t1;
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select TRUE,FALSE,NULL;
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TRUE FALSE NULL
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1 0 NULL
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create table t1 (c1 char(5)) character set=latin1;
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insert into t1 values('row 1');
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insert into t1 values('row 2');
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insert into t1 values('row 3');
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select concat(user(), '--', c1) from t1;
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concat(user(), '--', c1)
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root@localhost--row 1
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root@localhost--row 2
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root@localhost--row 3
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select concat(database(), '--', c1) from t1;
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concat(database(), '--', c1)
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test--row 1
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test--row 2
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test--row 3
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drop table t1;
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create table t1 (a char(10)) character set latin1;
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select * from t1 where a=version();
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a
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select * from t1 where a=database();
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a
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select * from t1 where a=user();
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a
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insert into t1 values ('a');
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select left(concat(a,version()),1) from t1;
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left(concat(a,version()),1)
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a
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drop table t1;
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