rollback

ROLLBACK

ROLLBACK

7

SQL - Language Statements

ROLLBACK

abort the current transaction

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

chained transactions

WORK; TRANSACTION
Optional key words. They have no effect.

AND CHAIN
If AND CHAIN is specified, a new (not aborted) transaction is immediately started with the same transaction characteristics (see ???) as the just finished one. Otherwise, no new transaction is started.

Notes

Use COMMIT to successfully terminate a transaction.

Issuing ROLLBACK 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 command ROLLBACK conforms to the SQL standard. The form ROLLBACK TRANSACTION is a PostgreSQL extension.

See Also