-- abort the current transaction
ABORT [ WORK | TRANSACTION ]
Message returned if successful.
- WARNING: ROLLBACK: no transaction in progress
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 PostgreSQL extension present
for historical reasons. ROLLBACK is the SQL92