Karl O. Pinc wrote:
> a per-person counter, which must not contain any 'gaps'. I can do this
> so long as nobody every makes any mistakes
> in sequencing, but once the sequence numbers are in place
> there's no way to re-order the rows in a sequence
> (the rows belonging to one person) without deleting
> and re-creating all the rows with sequence numbers
I can't answer your particular question, but you can always put an ON
UPDATE CASCADE into your foreign keys... then if you *shudder* had to
change those values, it should cascade out through all the attached rows
in other tables.
Greg