Yann,
> I'd like to help you, but I think, that my C-Experience is not good
> enough for beeing able to. I mean, I coded some C-stuff and I know how
> bitmap indexes (should) work but I guess that this won't be enough. In
> addidtion I never took a look into postgresql's sources.
Well, there's no time like the present to get started! ;-)
--
Josh Berkus
Aglio Database Solutions
San Francisco