Steps to Remove Role from MySQL user

Revoke a Role from a User

Write a MySQL query to revoke the role "db_reader" from the user "alice".

Solution:

-- This command removes the 'db_reader' role from the user 'alice'
-- The revocation applies to connections from localhost
REVOKE 'db_reader' FROM 'alice'@'localhost';

Explanation:

• Purpose of the Query:
• The goal is to remove a previously assigned role from a user.
• This demonstrates the REVOKE statement for role management.
• Key Components:
• REVOKE 'db_reader' : Specifies the role to be revoked.
• FROM 'alice'@'localhost' : Identifies the user from whom the role is being removed.
• Real-World Application:
• Useful when a user's responsibilities change and they no longer require specific permissions.

Notes:

• Confirm the role assignment exists before revoking it.

For more Practice: Solve these Related Problems:

• Write a MySQL query to revoke the role "data_analyst" from "john_doe"@'localhost'.
• Write a MySQL query to remove the role "db_admin" from "admin_user"@'%' after a change in responsibilities.
• Write a MySQL query to revoke the role "app_user" from "app_dev"@'192.168.1.150' and confirm the removal.
• Write a MySQL query to revoke the role "reporting_role" from both "user1"@'localhost' and "user2"@'localhost' simultaneously.

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous MySQL Exercise: Grant a Role to a User.
Next MySQL Exercise: Change a User's Password.