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SQL Server FAQ - Suser_Sname() - Sever Level Security Principal of Your Session

By: FYIcenter.com

(Continued from previous topic...)

What Is the Security Principal at the Server Level That Represents Your Session?

Security principal identifies who you are when you interact with the SQL Server. What can do you at the server level solely depends on the security principal that represents you. So it is very important to know your security principal at the server level.

What is the server level security principal of your session? The answer is simple - the login name you used to connect to the server to start the session. For example, if you connects to the server with the login name "sa", then your security principal is "sa" at the server level.

On a Unix system, there is a nice command called "whoami" which returns your security principal on the system. SQL Server provides a similar function called Suser_Sname(), which returns your security principal (a login name) at the server. Try it by following this tutorial example:

-- Find out your security principal at the server level
PRINT Suser_Sname();
GO
sa

This example shows you that you used "sa" as the login name to connect to the server.

(Continued on next topic...)

  1. What Is the Security Model Used in SQL Server 2005?
  2. What Are Security Principals Used in SQL Server 2005?
  3. What Is the Security Principal at the Server Level That Represents Your Session?
  4. What Is the Security Principal at the Database Level That Represents Your Session?
  5. How To Create a New Login Name in SQL Server?
  6. How To Verify a Login name with SQLCMD Tool?
  7. How To List All Login Names on the Server?
  8. How To Change the Password of a Login Name?
  9. How To Change a Login Name?
  10. How To Disable a Login Name?
  11. How To Delete a Login Name?
  12. How To Create a User Name in a Database?
  13. How To List All User Names in a Database?
  14. How To Find the Login Name Linked to a Given User Name?
  15. How To Verify a User name with SQLCMD Tool?
  16. How To Change the Name of a Database User?
  17. How To Delete an Existing Database User?

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