Question: Can I restore a SQL Server 2014 database backup on SQL Server 2012?
Answer: No. A backup made by a newer SQL Server version cannot be restored by an older version. Changing the database compatibility level does not change the backup format or make that restore possible.
Do not give up reading, though. There is a different way to move the data. Generate scripts for the schema and data on the newer server, target the older server version in the scripting options, then run and validate those scripts on a fresh database on the older instance. This is a logical migration, not a downgrade of the same database files.
In SSMS, the Generate Scripts wizard can script all objects or a selected subset. In its advanced options, choose the target SQL Server version and whether to script schema, data, or both. Review the output before executing it. Features introduced after SQL Server 2012 cannot simply be carried back; some objects need redesign, and some data types or behavior may not have an equivalent. For a large database, script generation may not be the most practical transfer method, but the compatibility problem remains the same.
A developer’s sample database, for example, may contain only a few tables that need to move. Then a targeted schema and data script can be sensible. A production database also needs its logins, permissions, jobs, dependencies, application compatibility, and row counts checked separately. Test the application against the older version before calling the move complete.
The original walkthroughs show the mechanics: script database schema and data, and watch the short SSMS demonstration.
So the interview answer remains simple: you cannot restore a 2014 backup to 2012. You may be able to recreate compatible schema and move data, but that is a separate migration to plan and verify.
Published by Pinal Dave on SQLAuthority. More of my work at pinaldave.com.
Discover more from SQL Authority with Pinal Dave
Subscribe to get the latest posts sent to your email.
