MySQL如何使用授权命令grant

本文实例，运行于 MySQL 5.0 及以上版本。

MySQL 赋予用户权限命令的简单格式可概括为：

grant 权限 on 数据库对象 to 用户

grant select on testdb.* to common_user@'%'grant insert on testdb.* to common_user@'%'grant update on testdb.* to common_user@'%'grant delete on testdb.* to common_user@'%'

grant select, insert, update, delete on testdb.* to common_user@'%'

grant 创建、修改、删除 MySQL 数据表结构权限。

grant create on testdb.* to developer@'192.168.0.%';grant alter on testdb.* to developer@'192.168.0.%';grant drop on testdb.* to developer@'192.168.0.%';

grant references on testdb.* to developer@'192.168.0.%';

grant create temporary tables on testdb.* to developer@'192.168.0.%';

grant index on testdb.* to developer@'192.168.0.%';

grant create view on testdb.* to developer@'192.168.0.%';grant show view on testdb.* to developer@'192.168.0.%';

grant create routine on testdb.* to developer@'192.168.0.%'; -- now, can show procedure statusgrant alter routine on testdb.* to developer@'192.168.0.%'; -- now, you can drop a proceduregrant execute on testdb.* to developer@'192.168.0.%';

grant all privileges on testdb to dba@'localhost'

四、grant 高级 DBA 管理 MySQL 中所有数据库的权限。

grant all on *.* to dba@'localhost'

1. grant 作用在整个 MySQL 服务器上：

grant select on *.* to dba@localhost; -- dba 可以查询 MySQL 中所有数据库中的表。grant all on *.* to dba@localhost; -- dba 可以管理 MySQL 中的所有数据库

grant select on testdb.* to dba@localhost; -- dba 可以查询 testdb 中的表。

grant select, insert, update, delete on testdb.orders to dba@localhost;

grant select(user_id,username) on smp.users to mo_user@'%' identified by '123345';grant select on smp.mo_sms to mo_user@'%' identified by '123345';

grant select(id, se, rank) on testdb.apache_log to dba@localhost;

grant execute on procedure testdb.pr_add to 'dba'@'localhost'grant execute on function testdb.fn_add to 'dba'@'localhost'

查看当前用户（自己）权限：

show grants;

show grants for dba@localhost;

revoke 跟 grant 的语法差不多，只需要把关键字 “to” 换成 “from” 即可：

grant all on *.* to dba@localhost;revoke all on *.* from dba@localhost;

1. grant, revoke 用户权限后，该用户只有重新连接 MySQL 数据库，权限才能生效。

2. 如果想让授权的用户，也可以将这些权限 grant 给其他用户，需要选项 “grant option“

grant select on testdb.* to dba@localhost with grant option;

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