Hi @Arsh
The SUPER privilege is not supported on Azure Database for MySQL. The closest you can get is to create another admin level user with the same rights as the server admin you created to do this you can run:
[code language="sql"]CREATE USER 'testuser'@'%' <span>IDENTIFIED </span>BY 'your_password_here';[/code]
Please find details in below community blog-
GRANT SUPER privilege on Azure Database for MySQL - Microsoft Community Hub
Regarding azure_superuser, All Azure Databases for MySQL servers are created with a user called "azure_superuser". Microsoft created a system account to manage the server to conduct monitoring, backups, and other regular maintenance.
As this is a PaaS service, so you will not have access to the Super User account. You will have access to the Admin account: Azure PostgreSQL Server Admin Document
Hope this helps!
Let us know if you have any question or need additional information.
Thank you!