SQL Server - What's My Version/Edition?

Here's a quick way to find out what version of the SQL Server engine you have installed.

SELECT 
    SERVERPROPERTY('productversion') AS ProductVersion,
    SERVERPROPERTY ('productlevel') AS ProductLevel,
    SERVERPROPERTY ('edition') AS Edition

Keep in mind that it is possible to have a SQL Server running the Enterprise edition of the SQL Server engine but the Standard edition of Analysis Services.