[postgis-users] Gist and points

[Paul Ramsey]

Calculating the bbox for points on the fly has zero cost, so that's  
what we do instead of wasting space duplicating the ordinates a  
second time.

P.

On 20-Sep-07, at 6:43 AM, Stephen Crawford wrote:

> I have a db with a few million points.  I noticed that hasbbox 
> (the_geom) =
> false for these points.  Does the gist index require that each these
> geometries have a bbox?  Should I add a bbox?