pginfo <pginfo@t1.unisoftbg.com> writes:
> sorry for my bad.
> My production server is 7.3.7, but the development is 7.3.1 and I ran the
> tests on 7.3.1.
> It is courios that on 7.3.1 the query is not constantly bad.
> From time to time it is running well.
Yeah, the mergejoin estimation bug doesn't bite in every case (if it
did, we'd have found it before release ;-)). Please update to 7.3.4.
regards, tom lane