1singlesidedbuffer - LINESTRING X, float radius, right side
2:memory: #use in-memory database
3SELECT AsText(SingleSidedBuffer(GeomFromText('LINESTRING(0 0, 0 20)'), 3.5, 0));
41 # rows (not including the header row)
51 # columns
6AsText(SingleSidedBuffer(GeomFromText('LINESTRING(0 0, 0 20)'), 3.5, 0))
7POLYGON((0 0, 0 20, 3.5 20, 3.5 0, 0 0))
8