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-- 创建用户 ---单个数据库授权 create user 'testone'@'localhost' identified by '123';grant all privileges on testone.* to testone ;-- 创建用户2create user 'testtwo'@'localhost' identified by '123';grant all privileges on *.* to testtwo@'localhost';grant all privileges on *.* to testtwo@'localhost';-- 授予用户 远程访问 （启用远程访问后备份的时候localhost失效）grant all privileges on *.* to wlliuxue@'%' identified by '123' with grant option;flush privileges;grant all privileges on *.* to testone@'192.168.1.126' identified by '123' with grant option;flush privileges;grant all privileges on *.* to root@'%' identified by '123' with grant option; flush privileges;
注意：新版本中 TO 'username'@'host' 中单引号是必须的
一, 创建用户:
命令:CREATE USER 'username'@'host' IDENTIFIED BY 'password';说明:username - 你将创建的用户名, host - 指定该用户在哪个主机上可以登陆,如果是本地用户可用localhost, 如果想让该用户可以从任意远程主机登陆,可以使用通配符%. password - 该用户的登陆密码,密码可以为空,如果为空则该用户可以不需要密码登陆服务器.
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,授权: 命令:
GRANT privileges ON databasename.tablename TO 'username'@'host'说明: privileges - 用户的操作权限,如SELECT , INSERT , UPDATE 等(详细列表见该文最后面).如果要授予所的权限则使用ALL.;databasename - 数据库名,tablename-表名,如果要授予该用户对所有数据库和表的相应操作权限则可用*表示, 如*.*.
例子: GRANT SELECT, INSERT ON test.user TO 'pig'@'%'; GRANT ALL ON *.* TO 'pig'@'%';注意:用以上命令授权的用户不能给其它用户授权,如果想让该用户可以授权,用以下命令:
GRANT privileges ON databasename.tablename TO 'username'@'host' WITH GRANT OPTION;三.设置与更改用户密码
命令:SET PASSWORD FOR 'username'@'host' = PASSWORD('newpassword');如果是当前登陆用户用SET PASSWORD = PASSWORD("newpassword"); 例子: SET PASSWORD FOR 'pig'@'%' = PASSWORD("123456"); 四.撤销用户权限 命令: REVOKE privilege ON databasename.tablename FROM 'username'@'host'; 说明: privilege, databasename, tablename - 同授权部分.例子: REVOKE SELECT ON *.* FROM 'pig'@'%';
具体信息可以用命令SHOW GRANTS FOR 'pig'@'%'; 查看.
五.删除用户转载地址：http://cragi.baihongyu.com/