ROLLBACK

ROLLBACK [ WORK | TRANSACTION ]

ROLLBACK rolls back the current transaction and causes all the updates made by the transaction to be discarded.

WORK
TRANSACTION

Use COMMIT(7) to successfully terminate a transaction.

Issuing ROLLBACK outside of a transaction block emits a warning and otherwise has no effect.

To abort all changes:

ROLLBACK;

The SQL standard only specifies the two forms ROLLBACK and ROLLBACK WORK. Otherwise, this command is fully conforming.

BEGIN(7), COMMIT(7), ROLLBACK TO SAVEPOINT (ROLLBACK_TO_SAVEPOINT(7))