How do I reverse a SQL UPDATE or delete?

Can you undo a SQL update?

Undo is called rollback in SQL. Once you've done a commit , you can't undo it without getting into restoring backups. Note that doing a rollback will undo an entire transaction, which means every update, insert, and delete since the transaction began, which is usually since the last commit or rollback.

How do I roll back an update in SQL?

Add a transaction and try statement before and after the update statement.1BEGIN TRY.2BEGIN TRANSACTION.3Select/update/delete.4COMMIT TRANSACTION.5END TRY.6BEGIN CATCH.7ROLLBACK TRANSACTION.8-- Consider logging the error and then re-raise.By mistake update few data and how to rollback those changes later

How do I undo an update in SQL Server?

There is no direct "undo" function in SQL Server. If your database is in recovery mode "Full", then you can run a log backup, and with your last full backup + all log backups you can perform a "point-in-time" restore; means you can restore the database with the point of a few seconds before you deleted the data.