Simon Riggs wrote:
BEGIN
display one screen to user - book the flight
INSERT INTO ...
INSERT INTO ...
UPDATE ...
SAVEPOINT
display another related screen - book the hotel
INSERT INTO
DELETE
UPDATE
UPDATE
SAVEPOINT
offer confirmation screen
COMMIT (or ROLLBACK)
No, SAVEPOINT is not some kind of intermediate commit, but a point where
a rollback can rollback to.
Hmmm....I'm not sure what you mean by "No". The SAVEPOINT is somewhere
you can ROLLBACK to, yes - exactly what I'm saying.
I've not introduced any concept of "intermediate commit"...
Do you agree that my example is valid Oracle SQL?
If you name that SAVEPOINT statements, yes. But the ordering of
statements makes the second savepoint useless, because it's after all
datamodifying statements; the first three are not covered by a savepoint
at all, only the toplevel xaction. That's probably not what you wanted.
Regards,
Andreas
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