henk de wit <henk53602(at)hotmail(dot)com> writes:
> I see, that sounds very interesting too. As you might have noticed, I'm not=
> an expert on this field but I'm trying to learn. I was under the impressio=
> n that the last few incarnations of postgresql automatically combined singl=
> e column indexes for cases where a multi-column index would be needed in ea=
> rlier releases.
It's possible to combine independent indexes for resolving AND-type
queries, but the combination process does not preserve ordering, so
it's useless for this type of situation.
regards, tom lane