On Jun 29, 2007, at 9:15 PM, Tom Lane wrote:
Hmm ... I fear Oracle's behavior is more correct, because if any argument is null (ie, unknown), then who can say what the greatest or least value is? It's unknown (ie, null). But I suspect our behavior is more useful. Comments?
I agree with you. I don't know what the spec says, but it seems clear Oracle is doing the proper thing and Postgres is doing the useful thing.
