How can I tell what edition of SQL Server runs on the machine?

select @@version

Sample Output

Microsoft SQL Server 2008 (SP1) - 10.0.2531.0 (X64) Mar 29 2009 10:11:52 Copyright (c) 1988-2008 Microsoft Corporation Developer Edition (64-bit) on Windows NT 6.1 (Build 7600: )

If you just want to get the edition, you can use:

select serverproperty('Edition')

To use in an automated script, you can get the edition ID, which is an integer:

select serverproperty('EditionID')

• -1253826760 = Desktop
• -1592396055 = Express
• -1534726760 = Standard
• 1333529388 = Workgroup
• 1804890536 = Enterprise
• -323382091 = Personal
• -2117995310 = Developer
• 610778273 = Enterprise Evaluation
• 1044790755 = Windows Embedded SQL
• 4161255391 = Express with Advanced Services

I use this query here to get all relevant info (relevant for me, at least :-)) from SQL Server:

SELECT  
    SERVERPROPERTY('productversion') as 'Product Version', 
    SERVERPROPERTY('productlevel') as 'Product Level',  
    SERVERPROPERTY('edition') as 'Product Edition',
    SERVERPROPERTY('buildclrversion') as 'CLR Version',
    SERVERPROPERTY('collation') as 'Default Collation',
    SERVERPROPERTY('instancename') as 'Instance',
    SERVERPROPERTY('lcid') as 'LCID',
    SERVERPROPERTY('servername') as 'Server Name'

That gives you an output something like this:

Product Version   Product Level   Product Edition             CLR Version   
10.0.2531.0       SP1             Developer Edition (64-bit)    v2.0.50727  

Default Collation     Instance   LCID   Server Name 
Latin1_General_CI_AS     NULL    1033   *********       

You can get just the edition name by using the following steps.

• Open "SQL Server Configuration Manager"
• From the List of SQL Server Services, Right Click on "SQL Server (Instance_name)" and Select Properties.
• Select "Advanced" Tab from the Properties window.
• Verify Edition Name from the "Stock Keeping Unit Name"
• Verify Edition Id from the "Stock Keeping Unit Id"
• Verify Service Pack from the "Service Pack Level"
• Verify Version from the "Version"

screen shot

You can get just the edition (plus under individual properties) using SERVERPROPERTY

e.g.

SELECT SERVERPROPERTY('Edition')

Quote (for "Edition"):

Installed product edition of the instance of SQL Server. Use the value of this property to determine the features and the limits, such as maximum number of CPUs, that are supported by the installed product.
Returns:
'Desktop Engine' (Not available for SQL Server 2005.)
'Developer Edition'
'Enterprise Edition'
'Enterprise Evaluation Edition'
'Personal Edition'(Not available for SQL Server 2005.)
'Standard Edition'
'Express Edition'
'Express Edition with Advanced Services'
'Workgroup Edition'
'Windows Embedded SQL'
Base data type: nvarchar(128)