1Circularity - Linestring not closed
2:memory: #use in-memory database
3SELECT Circularity(GeomFromText('LINESTRING(0 0, 0 4, 4 4, 4 0)'));
41 # rows (not including the header row)
51 # columns
6Circularity(GeomFromText('LINESTRING(0 0, 0 4, 4 4, 4 0)'))
70.0
8