[postgis-users] Merging two overlapping polygons

Thu Oct 1 05:02:01 PDT 2009

On Wed, Sep 30, 2009 at 10:40:46AM -0400, Alexandre Dube wrote:

> ST_Union worked and returned a single multipolygon, that's a good 
> start.  Is it possible to merge "intersecting" polygons only in a 
> statement ?

You might want to define an aggregate function for that.
There's no native support for such a query.

--strk; 

 Free GIS & Flash consultant/developer      ()  ASCII Ribbon Campaign
 http://foo.keybit.net/~strk/services.html  /\  Keep it simple! 