[postgis-users] Union and Intersection of Polygon layers

[Ravi]

Hi,
am using other FOSS GIS GRASS and OpenJUMP for 
Polygon layers Union 
           and Intersection (overlay)
are there similar functions in postGIS THE LATEST RELEASE

I have raised these issues some time before too.
http://postgis.refractions.net/pipermail/postgis-users/2008-May/019515.html

Ravi Kumar



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