Justin Clift <aa2@bigpond.net.au> writes:
> I haven't seen a mention of a maximum number of constraints of similar
> applying to a table. If so, then could someone please point me to it...
There is no such limit that I know of.
> Yet if I remove BOTH the "staff_details_phone_three" &
> "staff_details_managers_notes" constraints it works :
Are you absolutely certain that that's how it went? I think the most
likely story is just that you were hitting the length(varchar)-barfs-
on-NULL bug, and got confused about which combinations you'd tried.
regards, tom lane