ABORT -- Aborts the current transaction
Message returned if successful.
- NOTICE: UserAbortTransactionBlock and not in in-progress state
If there is not any transaction currently in progress.
ABORT rolls back the current transaction and causes
all the updates made by the transaction to be discarded.
This command is identical
in behavior to the SQL92 command ROLLBACK,
and is present only for historical reasons.
Use the COMMIT statement to successfully
terminate a transaction.
--To abort all changes
This command is a Postgres extension present
for historical reasons. ROLLBACK is the SQL92