Re: Why this Query Plan is different

"Thilina Gunasekara"  writes:
> **** This is Box A which runs on 7.4.5 and delivers very quick result.
> ...
> ****** And this is the Box B which runs on 7.3.9 and takes hours to deliver
> the result.

Well, that's what I'd expect.  There's a reason why we put a great deal
of effort into fixing IN in 7.4 ;-)

			regards, tom lane