# 撤销用户访问权限
#### 语法格式
```
REVOKE <privilege>* ON <resource>* FROM <principal>*
```
- **privilege**：要从主体撤销的对资源的权限
- **resource**：撤销权限的实体
- **principal**：撤销权限的用户/角色
#### 代码示例
```
读/写/全部（读+写）- Dataset级别授权：
REVOKE READ_DATASET ON databases.demo_db1.datasets.demo_ds1 FROM USER normal_user1;
REVOKE WRITE_DATASET ON databases.demo_db1.datasets.demo_ds1 FROM USER normal_user1;
REVOKE ALL ON databases.demo_db1.datasets.demo_ds1 FROM USER normal_user1; 
REVOKE READ_DATASET ON databases.demo_db1.datasets.demo_ds1 FROM ROLE nit_role3;
REVOKE WRITE_DATASET ON databases.demo_db1.datasets.demo_ds1 FROM ROLE nit_role3;
REVOKE ALL ON databases.demo_db1.datasets.demo_ds1 FROM ROLE nit_role3; 
创建/列出 - Database级别授权：
REVOKE CREATE_DATASET ON databases.demo_db1 FROM USER normal_user1;
REVOKE LIST_DATASET ON databases.demo_db1 FROM USER normal_user1; 
REVOKE CREATE_DATASET ON databases.demo_db1 FROM ROLE nit_role3;
REVOKE LIST_DATASET ON databases.demo_db1 FROM ROLE nit_role3;
```