COMMIT — commit the current transaction
COMMIT [ WORK | TRANSACTION ] [ AND [ NO ] CHAIN ]
COMMIT commits the current transaction. All
changes made by the transaction become visible to others
and are guaranteed to be durable if a crash occurs.
If the transaction is in an aborted state then no changes will be made
and the effect of the COMMIT will be identical to that
of ROLLBACK, including the command tag output.
In either case, if the AND CHAIN parameter is
specified then a new, identically configured, transaction is started.
For more information regarding transactions see Section 3.4.
WORKTRANSACTION #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) as the just finished one. Otherwise,
no new transaction is started.
On successful completion of a non-aborted transaction,
a COMMIT command returns a command tag of the form
COMMIT
However, in an aborted transaction, a COMMIT
command returns a command tag of the form
ROLLBACK
Use ROLLBACK to abort a transaction.
Issuing COMMIT when not inside a transaction does
no harm, but it will provoke a warning message. COMMIT AND
CHAIN when not inside a transaction is an error.
To commit the current transaction and make all changes permanent:
COMMIT;
The command COMMIT conforms to the SQL standard, except
that no exception condition is raised in the case where the transaction
was already aborted.
The form COMMIT TRANSACTION is a PostgreSQL extension.