mysql创建用户权限

1. 创建用户

   MySQL中的用户帐号由用户名，以及使用@字符分隔的主机名组成。

   CREATE user user_account IDENTIFIED BY password;
   例：
   create user super@localhost IDENTIFIED BY '123456'; //localhost主机连接到MySQL数据库服务器
   create user super@'%' IDENTIFIED BY '123456';   //允许从任意主机登录，
   ​
   create user super@'abc.com' IDENTIFIED BY '123456'; //abc.com登录
   create user super identified by '123456' ；省略了用户帐户的主机名部分，MySQL也会接受它，并允许用户从任何主机进行连接

2. 删除用户

   drop user super@'%';

3. 查看所有用户

   select user,host from mysql.user;

4. 查看当前用户

   select current_user();

5. 重命名

   rename user super01 to super02;

6. 修改密码

   alter user super02 identified by '6'; 

7. 添加权限

   GRANT All ON scada_db.* TO super02 WITH GRANT OPTION; //WITH GRANT OPTION 该用户能为其他用户授权

8. 刷新

   flush privileges;

9.  其他

//创建用户
CREATE USER super@'%' IDENTIFIED BY '123456';
//查看授权
SHOW GRANTS FOR super@'%';
//赋权
GRANT SELECT, UPDATE, DELETE ON scada_db.* TO super;
//创建用户
CREATE USER super01 IDENTIFIED BY '123456';
//授权
GRANT All ON scada_db.* TO super01 WITH GRANT OPTION;
//查看用户授权
SHOW GRANTS FOR super01;
//删除用户
drop user super@'%';
//查看所有用户
select user,host from mysql.user;
//查看当前用户
select current_user();
//重命名
rename user super01 to super02;
//修改密码
alter user super02 identified by '6';