ROLLBACK — abort the current transaction
ROLLBACK [ WORK | TRANSACTION ]
ROLLBACK
rolls back the current transaction and causes
all the updates made by the transaction to be discarded.
WORK
TRANSACTION
Optional key words. They have no effect.
Use COMMIT 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.