Remove all data from the geo data for the land in the PostGIS database but the boundaries of the land, the municipalities, water bodies (lakes, rivers, ...) and height and slope data.
--- old+++ new@@ -1 +1 @@-Remove all data from the geo data in the PostGIS databas but the boundaries of the land, the municipalities, water bodies (lakes, rivers, ...) and height and slope data.+Remove all data from the geo data for the land in the PostGIS database but the boundaries of the land, the municipalities, water bodies (lakes, rivers, ...) and height and slope data.
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a starting point could be https://sourceforge.net/p/cpgpf/code/HEAD/tree/trunk/common/geo/code/common_osm_eliminate_unneeded.pg_sql