Is there any way to rollback transactions in SQL Server?

Question

Yesterday I wrote some code module, that wrote wrong data in almost 400 existing records in important database on SQL Server 2008. I didn't make backup of this database (my mistake). So the question is how do I rollback these 400 transactions? Is there any way to do this? Thanks.

Answer 1

You can't rollback, but if the database is in full recovery model, then you can restore to another servar with stopat, and recover the deleted rows from there.

Answer 2

You can roll back a transaction as long as you haven't committed it.

But if you ran it yesterday, chances are very high you did commit - and then there's no way back.

So you're options are to

• either restore a backup (and next time remember to take one before such an operation!)
• manually "undo" those 400 transactions