DROP ROLE

This statement removes a role, that was previously created with CREATE ROLE.

Synopsis

DropRoleStmt
DROPROLEIFEXISTSRolenameList
RolenameList
Rolename,

Examples

Create a new role for the analytics team, and a new user called jennifer:

$ mysql -uroot Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 37 Server version: 5.7.25-TiDB-v4.0.0-beta.2-728-ga9177fe84 TiDB Server (Apache License 2.0) Community Edition, MySQL 5.7 compatible Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> CREATE ROLE analyticsteam; Query OK, 0 rows affected (0.02 sec) mysql> GRANT SELECT ON test.* TO analyticsteam; Query OK, 0 rows affected (0.02 sec) mysql> CREATE USER jennifer; Query OK, 0 rows affected (0.01 sec) mysql> GRANT analyticsteam TO jennifer; Query OK, 0 rows affected (0.01 sec)

Note that by default jennifer needs to SET ROLE analyticsteam in order to be able to use the privileges associated with the role:

$ mysql -ujennifer Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 32 Server version: 5.7.25-TiDB-v4.0.0-beta.2-728-ga9177fe84 TiDB Server (Apache License 2.0) Community Edition, MySQL 5.7 compatible Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> SHOW GRANTS; +---------------------------------------------+ | Grants for User | +---------------------------------------------+ | GRANT USAGE ON *.* TO 'jennifer'@'%' | | GRANT 'analyticsteam'@'%' TO 'jennifer'@'%' | +---------------------------------------------+ 2 rows in set (0.00 sec) mysql> SHOW TABLES in test; ERROR 1044 (42000): Access denied for user 'jennifer'@'%' to database 'test' mysql> SET ROLE analyticsteam; Query OK, 0 rows affected (0.00 sec) mysql> SHOW GRANTS; +---------------------------------------------+ | Grants for User | +---------------------------------------------+ | GRANT USAGE ON *.* TO 'jennifer'@'%' | | GRANT Select ON test.* TO 'jennifer'@'%' | | GRANT 'analyticsteam'@'%' TO 'jennifer'@'%' | +---------------------------------------------+ 3 rows in set (0.00 sec) mysql> SHOW TABLES IN test; +----------------+ | Tables_in_test | +----------------+ | t1 | +----------------+ 1 row in set (0.00 sec)

The statement SET DEFAULT ROLE can be used to associated a role to jennifer so that she will not have to execute the statement SET ROLE in order to assume the privileges associated with the role:

$ mysql -uroot Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 34 Server version: 5.7.25-TiDB-v4.0.0-beta.2-728-ga9177fe84 TiDB Server (Apache License 2.0) Community Edition, MySQL 5.7 compatible Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> SET DEFAULT ROLE analyticsteam TO jennifer; Query OK, 0 rows affected (0.02 sec)
$ mysql -ujennifer Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 35 Server version: 5.7.25-TiDB-v4.0.0-beta.2-728-ga9177fe84 TiDB Server (Apache License 2.0) Community Edition, MySQL 5.7 compatible Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> SHOW GRANTS; +---------------------------------------------+ | Grants for User | +---------------------------------------------+ | GRANT USAGE ON *.* TO 'jennifer'@'%' | | GRANT Select ON test.* TO 'jennifer'@'%' | | GRANT 'analyticsteam'@'%' TO 'jennifer'@'%' | +---------------------------------------------+ 3 rows in set (0.00 sec) mysql> SHOW TABLES IN test; +----------------+ | Tables_in_test | +----------------+ | t1 | +----------------+ 1 row in set (0.00 sec)

Drop the role for the analyticsteam:

$ mysql -uroot Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 41 Server version: 5.7.25-TiDB-v4.0.0-beta.2-728-ga9177fe84 TiDB Server (Apache License 2.0) Community Edition, MySQL 5.7 compatible Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> DROP ROLE analyticsteam; Query OK, 0 rows affected (0.02 sec)

Jennifer no longer has the default role of analyticsteam associated, or can set the role to analyticsteam:

$ mysql -ujennifer Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 42 Server version: 5.7.25-TiDB-v4.0.0-beta.2-728-ga9177fe84 TiDB Server (Apache License 2.0) Community Edition, MySQL 5.7 compatible Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> SHOW GRANTS; +--------------------------------------+ | Grants for User | +--------------------------------------+ | GRANT USAGE ON *.* TO 'jennifer'@'%' | +--------------------------------------+ 1 row in set (0.00 sec) mysql> SET ROLE analyticsteam; ERROR 3530 (HY000): `analyticsteam`@`%` is is not granted to jennifer@%

MySQL compatibility

This statement is understood to be fully compatible with roles, which are a feature of MySQL 8.0. Any compatibility differences should be reported via an issue on GitHub.

See also