Alvaro Herrera <alvherre@2ndquadrant.com> writes:
> Ah, now this is interesting. Can you please supply the definition of
> the table? I'm wondering if there is a partitioned table with an FK to
> this one. I'm not quite seeing how come 'tup' is NULL there.
Yeah, apparently we've passed a null OLD tuple to an RI_FKey_cascade_del
trigger, which surely shouldn't happen. It'd be interesting to look at
the set of triggers on this table. I don't entirely trust psql's \d
to show us reality if there's something screwed up about the triggers,
so in addition to \d output, could we see
select * from pg_trigger where tgrelid = 'ref.auto_hint'::regclass;
regards, tom lane