Dear colleagues, i have problems with ST_difference operator. I have imported two *.shp files in postgis databas, country(polygon) and region of country(polygon). I have run ST_difference query and the result was as i expected, but result was also part of both polygons, more precise some of boundary lines that both polygons contains. I have checked geometries in AutoCAD and both geometries are similar, line on line, point on point. Than I run queries in postgis to show me Geometry as text of both polygons and result of ST-difference. And all geometries contained same coordinates.
I hope that you have understand my problem and thank you for your help. Marko
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