Created a Function Currentuser(), Returning Login of Authorized User

Why it matters

This feature allows users to retrieve the currently authorized user's login within queries, facilitating auditing, access control, and session-specific logic execution. The alias user() ensures smoother migration and compatibility for users coming from MySQL environments.

How to use it

Use the function currentUser() within your SQL queries to get the login of the authorized user. For compatibility, you can also use user(). Example usage:

SELECT currentUser();
-- or equivalently
SELECT user();