Martijn van Oosterhout <kleptog@xxxxxxxxx> writes: > rtree works on multidimesional (geometric) data. It can do range tests > (is object A to the left of object B) but it's only applicable if your > conditions can be interpreted that way. > GiST is for creating custom index types, hardly likely to be useful > in your case. Actually either rtree or GIST should be able to do something useful with this, since it's basically a 1-D overlap query. The main problem with GIST is to find a suitable opclass, since there aren't any in the core system. Possibly contrib/seg could be used. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org