Vander Clock Stephane schrieb am 15.12.2010 um 23:23 (+0300):

>
> > Add R-Tree indices? From what I've understood (which might not be
> > enough) an R-Tree is a perfect match for your requirements.
>
> Yes exactly. not only my requierement, the requierement of everyone
> that want to do some select in range

Spatial, GIS, R-Tree (RTREE) - here's a link to the issue:

http://tracker.firebirdsql.org/browse/CORE-659

--
Michael Ludwig