ROLLBACK
Name
ROLLBACK -- abort the current transactionSynopsis
ROLLBACK [ WORK | TRANSACTION ]
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.
Notes
Use COMMIT to successfully terminate a transaction.
Issuing ROLLBACK outside of a transaction block emits a warning and otherwise has no effect.
Examples
To abort all changes:
ROLLBACK;
Compatibility
The SQL standard only specifies the two forms ROLLBACK and ROLLBACK WORK. Otherwise, this command is fully conforming.
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https://www.postgresql.org/docs/9.6/sql-rollback.html