Guide to upgrade SQL Server 2012 Edition
Note: Evaluation Edition can be upgraded into Full Version.
How to check SQL Server Edition
S1-1. Open Registry Editor (regedit.exe)
S1-2. Navigate to the following key:
HKLM\SOFTWARE\Microsoft\Microsoft SQL Server\<INSTANCE_NAME>\Setup
S1-3. View the value Edition
S1-4. For supported Edition Upgrade, read MSDN Supported Version and Edition Upgrades
How to Upgrade SQL Server Edition
S2-1. Run SQL Server 2012 Setup
S2-2. Select Maintenance –> Edition Upgrade
S2-3. Click Next to Product Key Wizard.
Select Enter the product key and enter your valid product key.
S2-4. If the status shows Succeeded, the edition upgrade is completed.
S2-5. To verify the upgraded edition, navigate to the following registry key:
HKLM\SOFTWARE\Microsoft\Microsoft SQL Server\<INSTANCE_NAME>\Setup
Check value Edition