How do I implement rollback in SQL?

How do I implement rollback in SQL?

To implement rollback in SQL, you need to use transactions. Start with 'BEGIN TRANSACTION', then execute your SQL commands.

What if I want to rollback only certain changes?

You can use savepoints. Set a savepoint with 'SAVEPOINT savepoint_name' and then rollback to that point using 'ROLLBACK TO savepoint_name'.

Can you give me an example of using rollback?

Sure! Here's a simple example: BEGIN TRANSACTION; INSERT INTO table_name VALUES (...); SAVEPOINT my_savepoint; UPDATE table_name SET column = value; ROLLBACK TO my_savepoint; COMMIT;.

What happens if I forget to commit?

If you forget to commit, all changes made during the transaction will be lost when the session ends or if you explicitly rollback.