[postgis-users] Union of 2 polygon shape files

[RAVI KUMAR]

Hi,
  I find that Union of 2 polygon shape files is not what is expected from  other FOSS GIS like GRASS etc. I can send two small shape files with a  few polygons and the anticipated result. Pl let me know to whom I  should mail it for help, such that UNION with PostGIS can be used after  necessary modifications.
  
  This will clear a roadblock for me in a exercise on Mineral prognastication using FOSS GIS.
  Ravi Kumar
  
       
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