On Thu, 26 May 2005, Tom Lane wrote:
> Stephan Szabo <sszabo@megazone.bigpanda.com> writes:
> >> Okay, I can't think of cases even with triggers and the like where
> >> removing the check on equal valued rows would give appreciably different
> >> results, but I haven't thought too hard about it.
>
> > Err, except the case that Tom mentions in his message.
>
> But the check could incorporate the same transaction ID test already
> in use. I think Neil is right that it'd be a win to apply the test
> before enqueueing the trigger instead of after.
Good point. That would help in many cases anyway.