ROLLBACK
ROLLBACK — abort the current transaction
Synopsis
ROLLBACK [ WORK | TRANSACTION ] [ AND [ NO ] CHAIN ]
Description
ROLLBACK rolls back the current transaction and causes all the updates made by the transaction to be discarded.
Parameters
WORKTRANSACTION#Optional key words. They have no effect.
AND CHAIN#If
AND CHAINis specified, a new (not aborted) transaction is immediately started with the same transaction characteristics (seeSET TRANSACTION) as the just finished one. Otherwise, no new transaction is started.
Notes
UseCOMMIT to successfully terminate a transaction.
IssuingROLLBACK outside of a transaction block emits a warning and otherwise has no effect.ROLLBACK AND CHAIN outside of a transaction block is an error.
Examples
To abort all changes:
ROLLBACK;
Compatibility
The commandROLLBACK conforms to the SQL standard. The formROLLBACK TRANSACTION is a PostgreSQL extension.