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HomeDatabaseMysql Tutorialmysql权限学习_MySQL

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1、创建新用户:

 

create user mark@localhost identified by '123456';

2、删除用户:

drop user mark@localhost;

3、修改用户名:

rename user mark@localhost to mark1@localhost;

4、修改用户密码:

set password for mark@localhost = password('111111');

5、授予权限:

(1)授予表权限:select,insert,delete,update,references,create,alter,index,drop,all或者all privileges.

use mysql;

grant select on user to mark@localhost;

(2)授予数据库权 限:select,insert,delete,update,references,create,alter,index,drop,create temporary tables,create view,show view,create routine,alter routine,execute routine,lock tables,all或者all privileges.

grant select on mysql.* to mark@localhost;

(3)授予用户权限:create user,show databases

grant create user on *.* to mark@localhost;

grant create,alter,drop on *.* to mark@localhost;

6、权限的转移和限制

(1)grant语句最后加with grant option,表示该用户有把自己的权限授予其它用户的权利,而不管其它用户是否有该权限。

grant select on mysql.user to mark@localhost with grant option;

重新用mark登录数据库后,mark可以授予别的用户相同的权限。

(2)with子句也可以对一个用户授予实用限制。

max_queries_per_hour 1   每小时查询数据库次数为1。

max_connections_per_hour 1  每小时可以连接数据库次数。

max_updates_per_hour 1     每小时可以修改数据库次数

max_user_connections 1      同时连接mysql的最大用户数。

如:

grant select on mysql.user to mark@localhost with max_queries_per_hour 1;

7、回收权限。

revoke select on mysql.user from mark@localhost;

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