REVOKE <privileges> From a User or Role
Removes one or more privileges on a securable object from a user or role. The privileges that can be granted are grouped into the following categories:
- Privileges for schema objects (databases, tables, views, stages, UDFs)
Syntax
REVOKE {
schemaObjectPrivileges | ALL [ PRIVILEGES ] ON <privileges_level>
}
TO [ROLE <role_name>] [<user>]
Where:
schemaObjectPrivileges ::=
-- For TABLE
{ SELECT | INSERT }
-- For SCHEMA
{ CREATE | DROP | ALTER }
-- For USER
{ CREATE USER }
-- For ROLE
{ CREATE ROLE}
-- For STAGE
{ CREATE STAGE}
privileges_level ::=
*.*
| db_name.*
| db_name.tbl_name
Examples
Revoke Privileges from a User
Create a user:
CREATE USER user1 IDENTIFIED BY 'abc123';
Grant the SELECT,INSERT
privilege on all existing tables in the default
database to the user user1
:
GRANT SELECT,INSERT ON default.* TO user1;
SHOW GRANTS FOR user1;
+---------------------------------------------------+
| Grants |
+---------------------------------------------------+
| GRANT SELECT,INSERT ON 'default'.* TO 'user1'@'%' |
+---------------------------------------------------+
Revoke INSERT
privilege from user user1
:
REVOKE INSERT ON default.* FROM user1;
SHOW GRANTS FOR user1;
+--------------------------------------------+
| Grants |
+--------------------------------------------+
| GRANT SELECT ON 'default'.* TO 'user1'@'%' |
+--------------------------------------------+
Revoke Privileges from a Role
Grant the SELECT,INSERT
privilege on all existing tables in the mydb
database to the role role1
:
Create role:
CREATE ROLE role1;
Grant privileges to the role:
GRANT SELECT,INSERT ON mydb.* TO ROLE role1;
Show the grants for the role:
SHOW GRANTS FOR ROLE role1;
+--------------------------------------------+
| Grants |
+--------------------------------------------+
| GRANT SELECT,INSERT ON 'mydb'.* TO 'role1' |
+--------------------------------------------+
Revoke INSERT
privilege from role role1
:
REVOKE INSERT ON mydb.* FROM ROLE role1;
SHOW GRANTS FOR ROLE role1;
+-------------------------------------+
| Grants |
+-------------------------------------+
| GRANT SELECT ON 'mydb'.* TO 'role1' |
+-------------------------------------+