Simon Riggs wrote:
> I'm guessing that the WITHOUT CHECK option would not be acceptable as an
> unprotected trap for our lazy and wicked users. :-)
Yes, that sounds scary.
Instead, I'd suggest finding ways to speed up the ALTER TABLE ADD
FOREIGN KEY. Or speeding up COPY into a table with foreign keys already
defined. For example, you might want to build an in-memory hash table of
the keys in the target table, instead of issuing a query on each INSERT,
if the target table isn't huge.
Nothing beats the speed of simply not checking the constraint, of
course, but I'd hate to lose the protection it gives.
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com