ABORT ABORT 7 SQL - Language Statements ABORT abort the current transaction ABORT [ WORK | TRANSACTION ] [ AND [ NO ] CHAIN ] 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 standard SQL command , and is present only for historical reasons. WORK TRANSACTION Optional key words. They have no effect. AND CHAIN If AND CHAIN is specified, a new transaction is immediately started with the same transaction characteristics (see ) as the just finished one. Otherwise, no new transaction is started. Use to successfully terminate a transaction. Issuing ABORT outside of a transaction block emits a warning and otherwise has no effect. To abort all changes: ABORT; This command is a PostgreSQL extension present for historical reasons. ROLLBACK is the equivalent standard SQL command.