On Thu, Feb 12, 2009 at 1:42 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Teodor Sigaev <teodor@sigaev.ru> writes:
>>> What did you think of the idea of simply abandoning support for
>>> conventional indexscans in GIN?
>
>> I don't like this idea because it forbids conventional indexscans even with
>> fastupdate=off.
>
> So? Barring some evidence that there's a significant performance win
> from a conventional indexscan, this is a weak argument. AFAICS the only
> significant advantage of the conventional API is to support ordered
> scans, and GIN doesn't do that anyway.
Wouldn't it force you to recheck all tuples on the page, instead of
just rechecking the one of interest?
...Robert