You could use a list (e.g. rather than sequence, have a next pointer pointing at the id of the next WI; you'd only need to update 2 rows to do an in-middle insert.
OTOH updating a dozen is one sql statement (done carefully) and will be fast. KISS IMO. -Rob _______________________________________________ Mailing list: https://launchpad.net/~launchpad-dev Post to : launchpad-dev@lists.launchpad.net Unsubscribe : https://launchpad.net/~launchpad-dev More help : https://help.launchpad.net/ListHelp