COMMIT — commit the current transaction
COMMIT [ WORK | TRANSACTION ]
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.
Optional key words. They have no effect.
Use ROLLBACK to abort a transaction.
COMMIT when not inside a transaction does
no harm, but it will provoke a warning message.
To commit the current transaction and make all changes permanent:
The SQL standard only specifies the two forms
WORK. Otherwise, this command is fully conforming.