What is my SQL Server Version, Service Pack, Edition

Requirement: Wanted to check the installed SQL Server version service pack level.
SELECT @@version ? It didn't give me the Service pack information.

Query to Check SQL Server version, Service pack and Edition:

SELECT SERVERPROPERTY('productversion') [Product Version], 
          SERVERPROPERTY ('productlevel') [Service Pack],
                    SERVERPROPERTY ('edition') [Edition]

KB Article: http://support.microsoft.com/kb/321185