FLUSH PRIVILEGES

FLUSH PRIVILEGES is a MySQL command that allows a database administrator to reload the grant tables and apply any changes made to user accounts, roles, or privileges in real-time.

The FLUSH PRIVILEGES command ensures that the changes made to the privilege tables are immediately available and that the MySQL server can authenticate and authorize access based on the new set of privileges.

Here are some important points to keep in mind when using FLUSH PRIVILEGES:

• The FLUSH PRIVILEGES command does not add, delete, or modify any user accounts, roles, or privileges. It simply reloads the grant tables to ensure all changes are in effect.
• Changes to user accounts, roles, or privileges made with a GRANT or REVOKE statement are not automatically applied until FLUSH PRIVILEGES is executed.
• It is not necessary to use FLUSH PRIVILEGES after every permission change. It is recommended to use it only when needed.
• The FLUSH PRIVILEGES command is useful when troubleshooting permission issues, as it reloads the grant tables and updates the user's permission cache.

To execute the FLUSH PRIVILEGES command, simply log in to the MySQL server as a user with the RELOAD privilege and enter the following command:

FLUSH PRIVILEGES;

It is essential to execute this command in the correct syntax in order to prevent any errors or issues.

In conclusion, FLUSH PRIVILEGES is a powerful tool that allows database administrators to update user accounts, roles, or privileges in real-time. By reloading the grant tables and updating the user's permission cache, the MySQL server can authenticate and authorize access based on the new set of privileges.