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mariadb/mysql-test/suite/jp/r/jp_alter_utf8.result
Monty 6b20342651 Ensure that fields declared with NOT NULL doesn't have DEFAULT values if not specified and if not timestamp or auto_increment 
In original code, sometimes one got an automatic DEFAULT value in some cases, in other cases not.

For example:
create table t1 (a int primary key)      - No default
create table t2 (a int, primary key(a))  - DEFAULT 0
create table t1 SELECT ....              - Default for all fields, even if they where defined as NOT NULL
ALTER TABLE ... MODIFY could sometimes add an unexpected DEFAULT value.

The patch is quite big because we had some many test cases that used
CREATE ... SELECT or CREATE ... (...PRIMARY KEY(xxx)) which doesn't have an automatic DEFAULT anymore.

Other things:
- Removed warnings from InnoDB when waiting from semaphore (got this when testing things with --big)
2015-08-18 11:18:57 +03:00

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DROP TABLE IF EXISTS `ｱｱｱ`;
DROP TABLE IF EXISTS `ｲｲｲ`;
DROP TABLE IF EXISTS `あああ`;
DROP TABLE IF EXISTS `いいい`;
DROP TABLE IF EXISTS `龖龖龖`;
DROP TABLE IF EXISTS `龗龗龗`;
SET NAMES utf8;
SET character_set_database = utf8;
CREATE TABLE `ｱｱｱ`(`ｷｷｷ` char(5)) DEFAULT CHARSET = utf8 engine=INNODB;
CREATE TABLE `ｲｲｲ`(`ｹｹｹ` char(5)) DEFAULT CHARSET = utf8 engine=INNODB;
CREATE TABLE `あああ`(`ききき` char(5)) DEFAULT CHARSET = utf8 engine=INNODB;
CREATE TABLE `いいい`(`けけけ` char(5)) DEFAULT CHARSET = utf8 engine=INNODB;
CREATE TABLE `龖龖龖`(`丂丂丂` char(5)) DEFAULT CHARSET = utf8 engine=INNODB;
CREATE TABLE `龗龗龗`(`乚乚乚` char(5)) DEFAULT CHARSET = utf8 engine=INNODB;
INSERT INTO `ｱｱｱ` VALUES ('ｱｱｱｱｱ'),('ｲｲｲｲｲ'),('ｳｳｳｳｳ');
INSERT INTO `あああ` VALUES ('あああああ'),('いいいいい'),('ううううう');
INSERT INTO `龖龖龖` VALUES ('丂丂丂丂丂'),('丄丄丄丄丄'),('丅丅丅丅丅');
ALTER TABLE `ｱｱｱ` ADD `ｶｶｶ` char(1) FIRST;
ALTER TABLE `ｱｱｱ` ADD `ｸｸｸ` char(1) AFTER `ｷｷｷ`;
ALTER TABLE `ｱｱｱ` ADD `ｹｹｹ` char(1);
ALTER TABLE `ｱｱｱ` ADD INDEX (`ｶｶｶ`);
ALTER TABLE `ｱｱｱ` ADD PRIMARY KEY (`ｷｷｷ`);
ALTER TABLE `ｱｱｱ` ADD UNIQUE (`ｸｸｸ`);
ALTER TABLE `ｱｱｱ` CHANGE `ｶｶｶ` `ｶｶ` char(1);
ALTER TABLE `ｱｱｱ` MODIFY `ｷｷｷ` char(6);
SELECT * FROM `ｱｱｱ`;
ｶｶ ｷｷｷ ｸｸｸ ｹｹｹ
NULL ｱｱｱｱｱ NULL NULL
NULL ｲｲｲｲｲ NULL NULL
NULL ｳｳｳｳｳ NULL NULL
DESC `ｱｱｱ`;
Field Type Null Key Default Extra
ｶｶ char(1) YES MUL NULL
ｷｷｷ char(6) NO PRI NULL
ｸｸｸ char(1) YES UNI NULL
ｹｹｹ char(1) YES NULL
SHOW CREATE TABLE `ｱｱｱ`;
Table Create Table
ｱｱｱ CREATE TABLE `ｱｱｱ` (
`ｶｶ` char(1) DEFAULT NULL,
`ｷｷｷ` char(6) NOT NULL,
`ｸｸｸ` char(1) DEFAULT NULL,
`ｹｹｹ` char(1) DEFAULT NULL,
PRIMARY KEY (`ｷｷｷ`),
UNIQUE KEY `ｸｸｸ` (`ｸｸｸ`),
KEY `ｶｶｶ` (`ｶｶ`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
ALTER TABLE `ｱｱｱ` DROP INDEX `ｶｶｶ`;
ALTER TABLE `ｱｱｱ` DROP PRIMARY KEY;
ALTER TABLE `ｱｱｱ` DROP INDEX `ｸｸｸ`;
ALTER TABLE `ｱｱｱ` DROP `ｶｶ`;
ALTER TABLE `ｱｱｱ` DROP `ｸｸｸ`;
ALTER TABLE `ｱｱｱ` DROP `ｹｹｹ`;
SELECT * FROM `ｱｱｱ`;
ｷｷｷ
ｱｱｱｱｱ
ｲｲｲｲｲ
ｳｳｳｳｳ
DESC `ｱｱｱ`;
Field Type Null Key Default Extra
ｷｷｷ char(6) NO NULL
SHOW CREATE TABLE `ｱｱｱ`;
Table Create Table
ｱｱｱ CREATE TABLE `ｱｱｱ` (
`ｷｷｷ` char(6) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8
ALTER TABLE `あああ` ADD `かかか` char(1) FIRST;
ALTER TABLE `あああ` ADD `くくく` char(1) AFTER `ききき`;
ALTER TABLE `あああ` ADD `けけけ` char(1);
ALTER TABLE `あああ` ADD INDEX (`かかか`);
ALTER TABLE `あああ` ADD PRIMARY KEY (`ききき`);
ALTER TABLE `あああ` ADD UNIQUE (`くくく`);
ALTER TABLE `あああ` CHANGE `かかか` `かか` char(1);
ALTER TABLE `あああ` MODIFY `ききき` char(6);
SELECT * FROM `あああ`;
かか ききき くくく けけけ
NULL あああああ NULL NULL
NULL いいいいい NULL NULL
NULL ううううう NULL NULL
DESC `あああ`;
Field Type Null Key Default Extra
かか char(1) YES MUL NULL
ききき char(6) NO PRI NULL
くくく char(1) YES UNI NULL
けけけ char(1) YES NULL
SHOW CREATE TABLE `あああ`;
Table Create Table
あああ CREATE TABLE `あああ` (
`かか` char(1) DEFAULT NULL,
`ききき` char(6) NOT NULL,
`くくく` char(1) DEFAULT NULL,
`けけけ` char(1) DEFAULT NULL,
PRIMARY KEY (`ききき`),
UNIQUE KEY `くくく` (`くくく`),
KEY `かかか` (`かか`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
ALTER TABLE `あああ` DROP INDEX `かかか`;
ALTER TABLE `あああ` DROP PRIMARY KEY;
ALTER TABLE `あああ` DROP INDEX `くくく`;
ALTER TABLE `あああ` DROP `かか`;
ALTER TABLE `あああ` DROP `くくく`;
ALTER TABLE `あああ` DROP `けけけ`;
SELECT * FROM `あああ`;
ききき
あああああ
いいいいい
ううううう
DESC `あああ`;
Field Type Null Key Default Extra
ききき char(6) NO NULL
SHOW CREATE TABLE `あああ`;
Table Create Table
あああ CREATE TABLE `あああ` (
`ききき` char(6) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8
ALTER TABLE `龖龖龖` ADD `丄丄丄` char(1) FIRST;
ALTER TABLE `龖龖龖` ADD `丅丅丅` char(1) AFTER `丂丂丂`;
ALTER TABLE `龖龖龖` ADD `乚乚乚` char(1);
ALTER TABLE `龖龖龖` ADD INDEX (`丄丄丄`);
ALTER TABLE `龖龖龖` ADD PRIMARY KEY (`丂丂丂`);
ALTER TABLE `龖龖龖` ADD UNIQUE (`丅丅丅`);
ALTER TABLE `龖龖龖` CHANGE `丄丄丄` `丄丄` char(1);
ALTER TABLE `龖龖龖` MODIFY `丂丂丂` char(6);
SELECT * FROM `龖龖龖`;
丄丄 丂丂丂 丅丅丅 乚乚乚
NULL 丂丂丂丂丂 NULL NULL
NULL 丄丄丄丄丄 NULL NULL
NULL 丅丅丅丅丅 NULL NULL
DESC `龖龖龖`;
Field Type Null Key Default Extra
丄丄 char(1) YES MUL NULL
丂丂丂 char(6) NO PRI NULL
丅丅丅 char(1) YES UNI NULL
乚乚乚 char(1) YES NULL
SHOW CREATE TABLE `龖龖龖`;
Table Create Table
龖龖龖 CREATE TABLE `龖龖龖` (
`丄丄` char(1) DEFAULT NULL,
`丂丂丂` char(6) NOT NULL,
`丅丅丅` char(1) DEFAULT NULL,
`乚乚乚` char(1) DEFAULT NULL,
PRIMARY KEY (`丂丂丂`),
UNIQUE KEY `丅丅丅` (`丅丅丅`),
KEY `丄丄丄` (`丄丄`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
ALTER TABLE `龖龖龖` DROP INDEX `丄丄丄`;
ALTER TABLE `龖龖龖` DROP PRIMARY KEY;
ALTER TABLE `龖龖龖` DROP INDEX `丅丅丅`;
ALTER TABLE `龖龖龖` DROP `丄丄`;
ALTER TABLE `龖龖龖` DROP `丅丅丅`;
ALTER TABLE `龖龖龖` DROP `乚乚乚`;
SELECT * FROM `龖龖龖`;
丂丂丂
丂丂丂丂丂
丄丄丄丄丄
丅丅丅丅丅
DESC `龖龖龖`;
Field Type Null Key Default Extra
丂丂丂 char(6) NO NULL
SHOW CREATE TABLE `龖龖龖`;
Table Create Table
龖龖龖 CREATE TABLE `龖龖龖` (
`丂丂丂` char(6) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8
DROP TABLE `ｱｱｱ`;
DROP TABLE `ｲｲｲ`;
DROP TABLE `あああ`;
DROP TABLE `いいい`;
DROP TABLE `龖龖龖`;
DROP TABLE `龗龗龗`;
CREATE TABLE `ｱｱｱ`(`ｷｷｷ` char(5)) DEFAULT CHARSET = utf8 engine=MYISAM;
CREATE TABLE `ｲｲｲ`(`ｹｹｹ` char(5)) DEFAULT CHARSET = utf8 engine=MYISAM;
CREATE TABLE `あああ`(`ききき` char(5)) DEFAULT CHARSET = utf8 engine=MYISAM;
CREATE TABLE `いいい`(`けけけ` char(5)) DEFAULT CHARSET = utf8 engine=MYISAM;
CREATE TABLE `龖龖龖`(`丂丂丂` char(5)) DEFAULT CHARSET = utf8 engine=MYISAM;
CREATE TABLE `龗龗龗`(`乚乚乚` char(5)) DEFAULT CHARSET = utf8 engine=MYISAM;
INSERT INTO `ｱｱｱ` VALUES ('ｱｱｱｱｱ'),('ｲｲｲｲｲ'),('ｳｳｳｳｳ');
INSERT INTO `あああ` VALUES ('あああああ'),('いいいいい'),('ううううう');
INSERT INTO `龖龖龖` VALUES ('丂丂丂丂丂'),('丄丄丄丄丄'),('丅丅丅丅丅');
ALTER TABLE `ｱｱｱ` ADD `ｶｶｶ` char(1) FIRST;
ALTER TABLE `ｱｱｱ` ADD `ｸｸｸ` char(1) AFTER `ｷｷｷ`;
ALTER TABLE `ｱｱｱ` ADD `ｹｹｹ` char(1);
ALTER TABLE `ｱｱｱ` ADD INDEX (`ｶｶｶ`);
ALTER TABLE `ｱｱｱ` ADD PRIMARY KEY (`ｷｷｷ`);
ALTER TABLE `ｱｱｱ` ADD UNIQUE (`ｸｸｸ`);
ALTER TABLE `ｱｱｱ` CHANGE `ｶｶｶ` `ｶｶ` char(1);
ALTER TABLE `ｱｱｱ` MODIFY `ｷｷｷ` char(6);
SELECT * FROM `ｱｱｱ`;
ｶｶ ｷｷｷ ｸｸｸ ｹｹｹ
NULL ｱｱｱｱｱ NULL NULL
NULL ｲｲｲｲｲ NULL NULL
NULL ｳｳｳｳｳ NULL NULL
DESC `ｱｱｱ`;
Field Type Null Key Default Extra
ｶｶ char(1) YES MUL NULL
ｷｷｷ char(6) NO PRI NULL
ｸｸｸ char(1) YES UNI NULL
ｹｹｹ char(1) YES NULL
SHOW CREATE TABLE `ｱｱｱ`;
Table Create Table
ｱｱｱ CREATE TABLE `ｱｱｱ` (
`ｶｶ` char(1) DEFAULT NULL,
`ｷｷｷ` char(6) NOT NULL,
`ｸｸｸ` char(1) DEFAULT NULL,
`ｹｹｹ` char(1) DEFAULT NULL,
PRIMARY KEY (`ｷｷｷ`),
UNIQUE KEY `ｸｸｸ` (`ｸｸｸ`),
KEY `ｶｶｶ` (`ｶｶ`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8
ALTER TABLE `ｱｱｱ` DROP INDEX `ｶｶｶ`;
ALTER TABLE `ｱｱｱ` DROP PRIMARY KEY;
ALTER TABLE `ｱｱｱ` DROP INDEX `ｸｸｸ`;
ALTER TABLE `ｱｱｱ` DROP `ｶｶ`;
ALTER TABLE `ｱｱｱ` DROP `ｸｸｸ`;
ALTER TABLE `ｱｱｱ` DROP `ｹｹｹ`;
SELECT * FROM `ｱｱｱ`;
ｷｷｷ
ｱｱｱｱｱ
ｲｲｲｲｲ
ｳｳｳｳｳ
DESC `ｱｱｱ`;
Field Type Null Key Default Extra
ｷｷｷ char(6) NO NULL
SHOW CREATE TABLE `ｱｱｱ`;
Table Create Table
ｱｱｱ CREATE TABLE `ｱｱｱ` (
`ｷｷｷ` char(6) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8
ALTER TABLE `あああ` ADD `かかか` char(1) FIRST;
ALTER TABLE `あああ` ADD `くくく` char(1) AFTER `ききき`;
ALTER TABLE `あああ` ADD `けけけ` char(1);
ALTER TABLE `あああ` ADD INDEX (`かかか`);
ALTER TABLE `あああ` ADD PRIMARY KEY (`ききき`);
ALTER TABLE `あああ` ADD UNIQUE (`くくく`);
ALTER TABLE `あああ` CHANGE `かかか` `かか` char(1);
ALTER TABLE `あああ` MODIFY `ききき` char(6);
SELECT * FROM `あああ`;
かか ききき くくく けけけ
NULL あああああ NULL NULL
NULL いいいいい NULL NULL
NULL ううううう NULL NULL
DESC `あああ`;
Field Type Null Key Default Extra
かか char(1) YES MUL NULL
ききき char(6) NO PRI NULL
くくく char(1) YES UNI NULL
けけけ char(1) YES NULL
SHOW CREATE TABLE `あああ`;
Table Create Table
あああ CREATE TABLE `あああ` (
`かか` char(1) DEFAULT NULL,
`ききき` char(6) NOT NULL,
`くくく` char(1) DEFAULT NULL,
`けけけ` char(1) DEFAULT NULL,
PRIMARY KEY (`ききき`),
UNIQUE KEY `くくく` (`くくく`),
KEY `かかか` (`かか`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8
ALTER TABLE `あああ` DROP INDEX `かかか`;
ALTER TABLE `あああ` DROP PRIMARY KEY;
ALTER TABLE `あああ` DROP INDEX `くくく`;
ALTER TABLE `あああ` DROP `かか`;
ALTER TABLE `あああ` DROP `くくく`;
ALTER TABLE `あああ` DROP `けけけ`;
SELECT * FROM `あああ`;
ききき
あああああ
いいいいい
ううううう
DESC `あああ`;
Field Type Null Key Default Extra
ききき char(6) NO NULL
SHOW CREATE TABLE `あああ`;
Table Create Table
あああ CREATE TABLE `あああ` (
`ききき` char(6) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8
ALTER TABLE `龖龖龖` ADD `丄丄丄` char(1) FIRST;
ALTER TABLE `龖龖龖` ADD `丅丅丅` char(1) AFTER `丂丂丂`;
ALTER TABLE `龖龖龖` ADD `乚乚乚` char(1);
ALTER TABLE `龖龖龖` ADD INDEX (`丄丄丄`);
ALTER TABLE `龖龖龖` ADD PRIMARY KEY (`丂丂丂`);
ALTER TABLE `龖龖龖` ADD UNIQUE (`丅丅丅`);
ALTER TABLE `龖龖龖` CHANGE `丄丄丄` `丄丄` char(1);
ALTER TABLE `龖龖龖` MODIFY `丂丂丂` char(6);
SELECT * FROM `龖龖龖`;
丄丄 丂丂丂 丅丅丅 乚乚乚
NULL 丂丂丂丂丂 NULL NULL
NULL 丄丄丄丄丄 NULL NULL
NULL 丅丅丅丅丅 NULL NULL
DESC `龖龖龖`;
Field Type Null Key Default Extra
丄丄 char(1) YES MUL NULL
丂丂丂 char(6) NO PRI NULL
丅丅丅 char(1) YES UNI NULL
乚乚乚 char(1) YES NULL
SHOW CREATE TABLE `龖龖龖`;
Table Create Table
龖龖龖 CREATE TABLE `龖龖龖` (
`丄丄` char(1) DEFAULT NULL,
`丂丂丂` char(6) NOT NULL,
`丅丅丅` char(1) DEFAULT NULL,
`乚乚乚` char(1) DEFAULT NULL,
PRIMARY KEY (`丂丂丂`),
UNIQUE KEY `丅丅丅` (`丅丅丅`),
KEY `丄丄丄` (`丄丄`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8
ALTER TABLE `龖龖龖` DROP INDEX `丄丄丄`;
ALTER TABLE `龖龖龖` DROP PRIMARY KEY;
ALTER TABLE `龖龖龖` DROP INDEX `丅丅丅`;
ALTER TABLE `龖龖龖` DROP `丄丄`;
ALTER TABLE `龖龖龖` DROP `丅丅丅`;
ALTER TABLE `龖龖龖` DROP `乚乚乚`;
SELECT * FROM `龖龖龖`;
丂丂丂
丂丂丂丂丂
丄丄丄丄丄
丅丅丅丅丅
DESC `龖龖龖`;
Field Type Null Key Default Extra
丂丂丂 char(6) NO NULL
SHOW CREATE TABLE `龖龖龖`;
Table Create Table
龖龖龖 CREATE TABLE `龖龖龖` (
`丂丂丂` char(6) NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8
DROP TABLE `ｱｱｱ`;
DROP TABLE `ｲｲｲ`;
DROP TABLE `あああ`;
DROP TABLE `いいい`;
DROP TABLE `龖龖龖`;
DROP TABLE `龗龗龗`;
CREATE TABLE `ｱｱｱ`(`ｷｷｷ` char(5)) DEFAULT CHARSET = utf8 engine=MEMORY;
CREATE TABLE `ｲｲｲ`(`ｹｹｹ` char(5)) DEFAULT CHARSET = utf8 engine=MEMORY;
CREATE TABLE `あああ`(`ききき` char(5)) DEFAULT CHARSET = utf8 engine=MEMORY;
CREATE TABLE `いいい`(`けけけ` char(5)) DEFAULT CHARSET = utf8 engine=MEMORY;
CREATE TABLE `龖龖龖`(`丂丂丂` char(5)) DEFAULT CHARSET = utf8 engine=MEMORY;
CREATE TABLE `龗龗龗`(`乚乚乚` char(5)) DEFAULT CHARSET = utf8 engine=MEMORY;
INSERT INTO `ｱｱｱ` VALUES ('ｱｱｱｱｱ'),('ｲｲｲｲｲ'),('ｳｳｳｳｳ');
INSERT INTO `あああ` VALUES ('あああああ'),('いいいいい'),('ううううう');
INSERT INTO `龖龖龖` VALUES ('丂丂丂丂丂'),('丄丄丄丄丄'),('丅丅丅丅丅');
ALTER TABLE `ｱｱｱ` ADD `ｶｶｶ` char(1) FIRST;
ALTER TABLE `ｱｱｱ` ADD `ｸｸｸ` char(1) AFTER `ｷｷｷ`;
ALTER TABLE `ｱｱｱ` ADD `ｹｹｹ` char(1);
ALTER TABLE `ｱｱｱ` ADD INDEX (`ｶｶｶ`);
ALTER TABLE `ｱｱｱ` ADD PRIMARY KEY (`ｷｷｷ`);
ALTER TABLE `ｱｱｱ` ADD UNIQUE (`ｸｸｸ`);
ALTER TABLE `ｱｱｱ` CHANGE `ｶｶｶ` `ｶｶ` char(1);
ALTER TABLE `ｱｱｱ` MODIFY `ｷｷｷ` char(6);
SELECT * FROM `ｱｱｱ`;
ｶｶ ｷｷｷ ｸｸｸ ｹｹｹ
NULL ｱｱｱｱｱ NULL NULL
NULL ｲｲｲｲｲ NULL NULL
NULL ｳｳｳｳｳ NULL NULL
DESC `ｱｱｱ`;
Field Type Null Key Default Extra
ｶｶ char(1) YES MUL NULL
ｷｷｷ char(6) NO PRI NULL
ｸｸｸ char(1) YES UNI NULL
ｹｹｹ char(1) YES NULL
SHOW CREATE TABLE `ｱｱｱ`;
Table Create Table
ｱｱｱ CREATE TABLE `ｱｱｱ` (
`ｶｶ` char(1) DEFAULT NULL,
`ｷｷｷ` char(6) NOT NULL,
`ｸｸｸ` char(1) DEFAULT NULL,
`ｹｹｹ` char(1) DEFAULT NULL,
PRIMARY KEY (`ｷｷｷ`),
UNIQUE KEY `ｸｸｸ` (`ｸｸｸ`),
KEY `ｶｶｶ` (`ｶｶ`)
) ENGINE=MEMORY DEFAULT CHARSET=utf8
ALTER TABLE `ｱｱｱ` DROP INDEX `ｶｶｶ`;
ALTER TABLE `ｱｱｱ` DROP PRIMARY KEY;
ALTER TABLE `ｱｱｱ` DROP INDEX `ｸｸｸ`;
ALTER TABLE `ｱｱｱ` DROP `ｶｶ`;
ALTER TABLE `ｱｱｱ` DROP `ｸｸｸ`;
ALTER TABLE `ｱｱｱ` DROP `ｹｹｹ`;
SELECT * FROM `ｱｱｱ`;
ｷｷｷ
ｱｱｱｱｱ
ｲｲｲｲｲ
ｳｳｳｳｳ
DESC `ｱｱｱ`;
Field Type Null Key Default Extra
ｷｷｷ char(6) NO NULL
SHOW CREATE TABLE `ｱｱｱ`;
Table Create Table
ｱｱｱ CREATE TABLE `ｱｱｱ` (
`ｷｷｷ` char(6) NOT NULL
) ENGINE=MEMORY DEFAULT CHARSET=utf8
ALTER TABLE `あああ` ADD `かかか` char(1) FIRST;
ALTER TABLE `あああ` ADD `くくく` char(1) AFTER `ききき`;
ALTER TABLE `あああ` ADD `けけけ` char(1);
ALTER TABLE `あああ` ADD INDEX (`かかか`);
ALTER TABLE `あああ` ADD PRIMARY KEY (`ききき`);
ALTER TABLE `あああ` ADD UNIQUE (`くくく`);
ALTER TABLE `あああ` CHANGE `かかか` `かか` char(1);
ALTER TABLE `あああ` MODIFY `ききき` char(6);
SELECT * FROM `あああ`;
かか ききき くくく けけけ
NULL あああああ NULL NULL
NULL いいいいい NULL NULL
NULL ううううう NULL NULL
DESC `あああ`;
Field Type Null Key Default Extra
かか char(1) YES MUL NULL
ききき char(6) NO PRI NULL
くくく char(1) YES UNI NULL
けけけ char(1) YES NULL
SHOW CREATE TABLE `あああ`;
Table Create Table
あああ CREATE TABLE `あああ` (
`かか` char(1) DEFAULT NULL,
`ききき` char(6) NOT NULL,
`くくく` char(1) DEFAULT NULL,
`けけけ` char(1) DEFAULT NULL,
PRIMARY KEY (`ききき`),
UNIQUE KEY `くくく` (`くくく`),
KEY `かかか` (`かか`)
) ENGINE=MEMORY DEFAULT CHARSET=utf8
ALTER TABLE `あああ` DROP INDEX `かかか`;
ALTER TABLE `あああ` DROP PRIMARY KEY;
ALTER TABLE `あああ` DROP INDEX `くくく`;
ALTER TABLE `あああ` DROP `かか`;
ALTER TABLE `あああ` DROP `くくく`;
ALTER TABLE `あああ` DROP `けけけ`;
SELECT * FROM `あああ`;
ききき
あああああ
いいいいい
ううううう
DESC `あああ`;
Field Type Null Key Default Extra
ききき char(6) NO NULL
SHOW CREATE TABLE `あああ`;
Table Create Table
あああ CREATE TABLE `あああ` (
`ききき` char(6) NOT NULL
) ENGINE=MEMORY DEFAULT CHARSET=utf8
ALTER TABLE `龖龖龖` ADD `丄丄丄` char(1) FIRST;
ALTER TABLE `龖龖龖` ADD `丅丅丅` char(1) AFTER `丂丂丂`;
ALTER TABLE `龖龖龖` ADD `乚乚乚` char(1);
ALTER TABLE `龖龖龖` ADD INDEX (`丄丄丄`);
ALTER TABLE `龖龖龖` ADD PRIMARY KEY (`丂丂丂`);
ALTER TABLE `龖龖龖` ADD UNIQUE (`丅丅丅`);
ALTER TABLE `龖龖龖` CHANGE `丄丄丄` `丄丄` char(1);
ALTER TABLE `龖龖龖` MODIFY `丂丂丂` char(6);
SELECT * FROM `龖龖龖`;
丄丄 丂丂丂 丅丅丅 乚乚乚
NULL 丂丂丂丂丂 NULL NULL
NULL 丄丄丄丄丄 NULL NULL
NULL 丅丅丅丅丅 NULL NULL
DESC `龖龖龖`;
Field Type Null Key Default Extra
丄丄 char(1) YES MUL NULL
丂丂丂 char(6) NO PRI NULL
丅丅丅 char(1) YES UNI NULL
乚乚乚 char(1) YES NULL
SHOW CREATE TABLE `龖龖龖`;
Table Create Table
龖龖龖 CREATE TABLE `龖龖龖` (
`丄丄` char(1) DEFAULT NULL,
`丂丂丂` char(6) NOT NULL,
`丅丅丅` char(1) DEFAULT NULL,
`乚乚乚` char(1) DEFAULT NULL,
PRIMARY KEY (`丂丂丂`),
UNIQUE KEY `丅丅丅` (`丅丅丅`),
KEY `丄丄丄` (`丄丄`)
) ENGINE=MEMORY DEFAULT CHARSET=utf8
ALTER TABLE `龖龖龖` DROP INDEX `丄丄丄`;
ALTER TABLE `龖龖龖` DROP PRIMARY KEY;
ALTER TABLE `龖龖龖` DROP INDEX `丅丅丅`;
ALTER TABLE `龖龖龖` DROP `丄丄`;
ALTER TABLE `龖龖龖` DROP `丅丅丅`;
ALTER TABLE `龖龖龖` DROP `乚乚乚`;
SELECT * FROM `龖龖龖`;
丂丂丂
丂丂丂丂丂
丄丄丄丄丄
丅丅丅丅丅
DESC `龖龖龖`;
Field Type Null Key Default Extra
丂丂丂 char(6) NO NULL
SHOW CREATE TABLE `龖龖龖`;
Table Create Table
龖龖龖 CREATE TABLE `龖龖龖` (
`丂丂丂` char(6) NOT NULL
) ENGINE=MEMORY DEFAULT CHARSET=utf8
DROP TABLE `ｱｱｱ`;
DROP TABLE `ｲｲｲ`;
DROP TABLE `あああ`;
DROP TABLE `いいい`;
DROP TABLE `龖龖龖`;
DROP TABLE `龗龗龗`;
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