注:我的運(yùn)行環(huán)境是widnows xp professional + MySQL5.0
一, 創(chuàng)建用戶:
命令:CREATE USER 'username'@'host' IDENTIFIED BY 'password';
說 明:username - 你將創(chuàng)建的用戶名, host - 指定該用戶在哪個(gè)主機(jī)上可以登陸,如果是本地用戶可用localhost, 如果想讓該用戶可以從任意遠(yuǎn)程主機(jī)登陸,可以使用通配符%. password - 該用戶的登陸密碼,密碼可以為空,如果為空則該用戶可以不需要密碼登陸服務(wù)器.
例子: CREATE USER 'dog'@'localhost' IDENTIFIED BY '123456';
CREATE USER 'pig'@'192.168.1.101_' IDENDIFIED BY '123456';
CREATE USER 'pig'@'%' IDENTIFIED BY '123456';
CREATE USER 'pig'@'%' IDENTIFIED BY '';
CREATE USER 'pig'@'%';
二,授權(quán):
命令:GRANT privileges ON databasename.tablename TO 'username'@'host'
說 明: privileges - 用戶的操作權(quán)限,如SELECT , INSERT , UPDATE 等(詳細(xì)列表見該文最后面).如果要授予所的權(quán)限則使用ALL.;databasename - 數(shù)據(jù)庫名,tablename-表名,如果要授予該用戶對(duì)所有數(shù)據(jù)庫和表的相應(yīng)操作權(quán)限則可用*表示, 如*.*.
例子: GRANT SELECT, INSERT ON test.user TO 'pig'@'%';
GRANT ALL ON *.* TO 'pig'@'%';
注意:用以上命令授權(quán)的用戶不能給其它用戶授權(quán),如果想讓該用戶可以授權(quán),用以下命令:
GRANT privileges ON databasename.tablename TO 'username'@'host' WITH GRANT OPTION;
三.設(shè)置與更改用戶密碼
命令:SET PASSWORD FOR 'username'@'host' = PASSWORD('newpassword');如果是當(dāng)前登陸用戶用SET PASSWORD = PASSWORD("newpassword");
例子: SET PASSWORD FOR 'pig'@'%' = PASSWORD("123456");
四.撤銷用戶權(quán)限
命令: REVOKE privilege ON databasename.tablename FROM 'username'@'host';
說明: privilege, databasename, tablename - 同授權(quán)部分.
例子: REVOKE SELECT ON *.* FROM 'pig'@'%';
注 意: 假如你在給用戶'pig'@'%'授權(quán)的時(shí)候是這樣的(或類似的):GRANT SELECT ON test.user TO 'pig'@'%', 則在使用REVOKE SELECT ON *.* FROM 'pig'@'%';命令并不能撤銷該用戶對(duì)test數(shù)據(jù)庫中user表的SELECT 操作.相反,如果授權(quán)使用的是GRANT SELECT ON *.* TO 'pig'@'%';則REVOKE SELECT ON test.user FROM 'pig'@'%';命令也不能撤銷該用戶對(duì)test數(shù)據(jù)庫中user表的Select 權(quán)限.
具體信息可以用命令SHOW GRANTS FOR 'pig'@'%'; 查看.
五.刪除用戶
命令: DROP USER 'username'@'host';
附表:在MySQL中的操作權(quán)限
| ALTER | Allows use of ALTER TABLE. |
| ALTER ROUTINE | Alters or drops stored routines. |
| CREATE | Allows use of CREATE TABLE. |
| CREATE ROUTINE | Creates stored routines. |
| CREATE TEMPORARY TABLE | Allows use of CREATE TEMPORARY TABLE. |
| CREATE USER | Allows use of CREATE USER, DROP USER, RENAME USER, and REVOKE ALL PRIVILEGES. |
| CREATE VIEW | Allows use of CREATE VIEW. |
| DELETE | Allows use of DELETE. |
| DROP | Allows use of DROP TABLE. |
| EXECUTE | Allows the user to run stored routines. |
| FILE | Allows use of SELECT... INTO OUTFILE and LOAD DATA INFILE. |
| INDEX | Allows use of CREATE INDEX and DROP INDEX. |
| INSERT | Allows use of INSERT. |
| LOCK TABLES | Allows use of LOCK TABLES on tables for which the user also has SELECT privileges. |
| PROCESS | Allows use of SHOW FULL PROCESSLIST. |
| RELOAD | Allows use of FLUSH. |
| REPLICATION | Allows the user to ask where slave or master |
| CLIENT | servers are. |
| REPLICATION SLAVE | Needed for replication slaves. |
| SELECT | Allows use of SELECT. |
| SHOW DATABASES | Allows use of SHOW DATABASES. |
| SHOW VIEW | Allows use of SHOW CREATE VIEW. |
| SHUTDOWN | Allows use of mysqladmin shutdown. |
| SUPER | Allows use of CHANGE MASTER, KILL, PURGE MASTER LOGS, and SET GLOBAL SQL statements. Allows mysqladmin debug command. Allows one extra connection to be made if maximum connections are reached. |
| UPDATE | Allows use of UPDATE. |
| USAGE | Allows connection without any specific privileges. |