ABORT

ABORT

7

SQL - Language Statements

ABORT

abort the current transaction

ABORT \[ WORK \| TRANSACTION \] \[ AND \[ NO \] CHAIN \]

Description
===========

`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 [`ROLLBACK`](#sql-rollback), and is
present only for historical reasons.

Parameters
==========

`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
    [`SET TRANSACTION`](#sql-set-transaction)) as the just finished one.
    Otherwise, no new transaction is started.

Notes
=====

Use [`COMMIT`](#sql-commit) to successfully terminate a transaction.

Issuing `ABORT` outside of a transaction block emits a warning and
otherwise has no effect.

Examples
========

To abort all changes:

    ABORT;

Compatibility
=============

This command is a PostgreSQL extension present for historical reasons.
`ROLLBACK` is the equivalent standard SQL command.

See Also
========
