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RemoveRepeatedPoints Valid Geometry
:memory: #use in-memory database
SELECT AsText(RemoveRepeatedPoints(GeomFromText('GEOMETRYCOLLECTION(POINT(1 1), LINESTRING(10 10, 40 40), POLYGON((50 50, 100 50, 100 100, 50 100, 50 50), (60 60, 80 60, 80 80, 60 80, 60 60)))', 4326)));
1 # rows (not including the header row)
1 # columns
AsText(RemoveRepeatedPoints(GeomFromText('GEOMETRYCOLLECTION(POINT(1 1), LINESTRING(10 10, 40 40), POLYGON((50 50, 100 50, 100 100, 50 100, 50 50), (60 60, 80 60, 80 80, 60 80, 60 60)))', 4326)))
GEOMETRYCOLLECTION(POINT(1 1), LINESTRING(10 10, 40 40), POLYGON((50 50, 100 50, 100 100, 50 100, 50 50), (60 60, 80 60, 80 80, 60 80, 60 60)))
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