SQL USER_NAME() windows authentication

Question

When I log in sql management studio with windows authentication and I run

SELECT USER_NAME()

I see the result as dbo.

I expected it would show my user.

I am looking for an explanation as to why it returns dbo.

Answer 1

Use this instead

SELECT SUSER_NAME()

USER_NAME: Returns a database user name from a specified identification number.

SUSER_NAME: Returns the login identification name of the user.