Teodor Sigaev <teodor(at)sigaev(dot)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.
regards, tom lane