1Centroid - toxic 2:memory: #use in-memory database 3SELECT astext(centroid(GeomFromText('POLYGON((136 -35, 135.2 -34.5, 136 -35.2, 136 -35, 135.2 -34.5))'))); 41 # rows (not including the header row) 51 # columns 6astext(centroid(GeomFromText('POLYGON((136 -35, 135.2 -34.5, 136 -35.2, 136 -35, 135.2 -34.5))'))) 7POINT(135.733333 -34.9) 8 9 10