Problem

Changes Database User, which is identical in name tothe Login to a new name, while keepingthe SID connection

Implementation

https://github.com/steverezhener/DBA/blob/master/Procedures/bestpractices.usp_change_database_user_from_login.sql

EXEC DBA.bestpractices.usp_change_database_user_from_login @new_database_username = ‘User’, @old_database_username = ‘Login’, @login_name = ‘Login’