The complete list of SQL Server 2012 editions can be listed as follows:
- SQL Server 2012 Enterprise Edition
- SQL Server 2012 Business Intelligence Edition
- Standard Edition
- Web Edition
- Express with Advanced Services Edition
- Express with Tools Edition
- Express Edition
Besides above SQL Server editions list, Evaluation edition and Developer editions also exist. These two SQL Server editions have same features with SQL Server 2012 Enterprise edition. On the other hand, Evaluation editions are valid for a limited time. SQL Server 2012 Developer Edition can only be used for development purposes and cannot be used in production environments.
A full list of features compared for main SQL Server 2012 editions can be found at Microsoft SQL Server portal SQL Server
If you want to get a full feature comparison chart for SQL Server 2012 editions, you should check the BOL (Books OnLine) for SQL Server.
