How do I nest transactions in SQL?

How do I nest transactions in SQL?

Nesting transactions in SQL allows you to manage multiple transactions within a single transaction block. You can use savepoints to achieve this.

Can you give me an example of how to use savepoints?

Sure! You can create a savepoint using the command SAVEPOINT savepoint_name; and then roll back to it if needed using ROLLBACK TO savepoint_name;.

What happens if I roll back to a savepoint?

Rolling back to a savepoint undoes all operations performed after that savepoint, but keeps the changes made before it.

Are there any limitations to nesting transactions?

Yes, some databases have limitations on the number of nested transactions or savepoints, so it's important to check your database documentation.