创建用户zs,密码123456, 创建角色R1,并分配权限如下:student表的select、insert;sc表的delete、update(grade) 给用户zs分配角色R1 验证zs权限 回收zs在sc表的update(grade)权限 验证zs权限
时间: 2024-02-20 13:57:52 浏览: 78
好的,我会按照您的要求进行操作。以下是具体步骤:
1. 创建用户zs,密码123456:
```
CREATE USER zs IDENTIFIED BY 123456;
```
2. 创建角色R1,并分配权限:
```
CREATE ROLE R1;
GRANT SELECT, INSERT ON student TO R1;
GRANT DELETE, UPDATE(grade) ON sc TO R1;
```
3. 给用户zs分配角色R1:
```
GRANT R1 TO zs;
```
4. 验证zs权限:
```
-- 进入zs用户
CONN zs/123456
-- 验证student表的select、insert权限
SELECT * FROM student;
INSERT INTO student VALUES (1, 'test');
-- 验证sc表的delete、update(grade)权限
DELETE FROM sc WHERE id = 1;
UPDATE sc SET grade = 80 WHERE id = 2;
```
5. 回收zs在sc表的update(grade)权限:
```
REVOKE UPDATE(grade) ON sc FROM zs;
```
6. 验证zs权限:
```
-- 验证student表的select、insert权限
SELECT * FROM student;
INSERT INTO student VALUES (1, 'test');
-- 验证sc表的delete权限(因为已经回收了update(grade)权限)
DELETE FROM sc WHERE id = 1;
```
以上就是您所要求的操作,如果还有其他问题或需求,请随时告诉我。
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