ABORT [ TRANSACTION | WORK ]
Message returned if successful.
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 COMMIT to successfully terminate a transaction.
To abort all changes:
This command is a Postgres extension present for historical reasons. ROLLBACK is the SQL92 equivalent command.