How do I script a password change for a SQL server login?

Question

Just what the title says, I need to change the password for an existing sql server login and I want to do it via sql script.

Answer 1

If the user already has the ALTER ANY LOGIN permission (i.e. the user can change any password for any user) then this works:

alter login mylogin with password = 'mylogin'

Otherwise, if you don't want to make every user in your system a superuser, add a parameter of the old password for the same command:

alter login mylogin with password = 'mylogin' old_password='oldpassword'