SQL Server has no command that directly downgrades a database engine format. A safe downgrade rebuilds the database on the selected older SQL Server version and verifies the result.
The practical SQL Server downgrade process
Upload a BAK or MDF, select the older target version, review compatibility findings, and create a new target database. The original source remains unchanged and the downloadable backup is produced by the target engine.
Start with a compatibility preflight
Inventory tables, columns, collations, keys, indexes, views, procedures, triggers, data types, and version-specific features before creating the target database. Keep the source connection read-only.
Build the target and move the data
Create a new target database and generate T-SQL definitions for the target engine. Transfer rows in controlled batches, preserve identity values, and order dependencies so constraints can be recreated safely.
Rebuild, verify, and deliver
Recreate supported programmable objects, document deferred items, compare row counts and SHA-256 hashes, run DBCC checks, and create a native BAK after RESTORE VERIFYONLY or a test restore succeeds.
Convert your database with a guided workflow
Replace fragile manual scripts with inspection, progress tracking, and evidence-backed verification.
Open conversion dashboard