How do I use savepoints in SQL?

How do I use savepoints in SQL?

Savepoints in SQL allow you to set a point within a transaction to which you can later roll back. You can create a savepoint using the command SAVEPOINT savepoint_name;.

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

Sure! Here's a simple example:

BEGIN;
SAVEPOINT my_savepoint;
INSERT INTO my_table (column1) VALUES ('value1');
ROLLBACK TO my_savepoint;
COMMIT;

This will insert a value and then roll back to the savepoint, so the insert won't be saved.

What happens if I don't roll back to the savepoint?

If you don't roll back to the savepoint, any changes made after the savepoint will remain in the transaction until you commit it.

Are there any limitations to using savepoints?

Yes, savepoints can only be used within a transaction, and they can increase the complexity of your transaction management.