openGauss每日一练第5天 | 用户及权限管理

1.创建用户user1、user2和user3，user1具有CREATEROLE权限，user2具有CREATEDB权限，要求使用两种不同的方法设置密码

create user user1 createrole password 'asdf@1234';

create user user2 createdb identified by 'qwer@1234';

create user user3 identified by 'zxcv@1234';

2.修改用户user1的密码

alter user user1 identified by  'qwer@1234' replace 'asdf@1234';

3.重命名用户user2

alter user user2 rename to user4;

4.将用户user1的权限授权给用户user3，再回收用户user3的权限

grant user1 to user3;

revoke all privilege from user3;

5.删除所有创建用户，过程中使用\du或\du+查看用户信息

drop user user1;

drop user user4;

drop user user3;