Tests of exact equality and exact equality with normalization P - point POINT(10 10) POINT(10 10) true P - point POINT(10 10) POINT(10 11) false mP - MultiPoint MULTIPOINT((10 10), (20 20)) MULTIPOINT((10 10), (20 20)) true mP - MultiPoint, permuted MULTIPOINT((10 10), (20 20)) MULTIPOINT((20 20), (10 10)) false true mP - MultiPoint empty MULTIPOINT EMPTY MULTIPOINT EMPTY true L - Line LINESTRING(10 10, 20 20, 30 30) LINESTRING(10 10, 20 20, 30 30) true L - Line, permuted LINESTRING(10 10, 20 20, 30 30) LINESTRING(30 30, 20 20, 10 10) false true L - closed LINESTRING(10 10, 20 20, 20 10, 10 10) LINESTRING(10 10, 20 20, 20 10, 10 10) true L - empty LINESTRING EMPTY LINESTRING EMPTY true mL - 2 lines with common endpoint MULTILINESTRING( (10 10, 20 20), (20 20, 30 30)) MULTILINESTRING( (10 10, 20 20), (20 20, 30 30)) true mL - 2 lines with common endpoint, permuted MULTILINESTRING( (10 10, 20 20), (20 20, 30 30)) MULTILINESTRING( (30 30, 20 20), (10 10, 20 20)) false true A - polygon with no holes POLYGON((40 60, 420 60, 420 320, 40 320, 40 60)) POLYGON((40 60, 420 60, 420 320, 40 320, 40 60)) true A - polygon with no holes, permuted POLYGON((40 60, 420 60, 420 320, 40 320, 40 60)) POLYGON((420 60, 420 320, 40 320, 40 60, 420 60)) false true A - polygon with 1 hole POLYGON( (40 60, 420 60, 420 320, 40 320, 40 60), (200 140, 160 220, 260 200, 200 140)) POLYGON( (40 60, 420 60, 420 320, 40 320, 40 60), (200 140, 160 220, 260 200, 200 140)) true A - empty POLYGON EMPTY POLYGON EMPTY true mA MULTIPOLYGON (((50 100, 100 100, 100 50, 50 50, 50 100)), ((150 100, 200 100, 200 50, 150 50, 150 100))) MULTIPOLYGON (((50 100, 100 100, 100 50, 50 50, 50 100)), ((150 100, 200 100, 200 50, 150 50, 150 100))) true mA - permuted MULTIPOLYGON (((50 100, 100 100, 100 50, 50 50, 50 100)), ((150 100, 200 100, 200 50, 150 50, 150 100))) MULTIPOLYGON (((150 100, 200 100, 200 50, 150 50, 150 100)), ((50 100, 100 100, 100 50, 50 50, 50 100))) false true mA - empty MULTIPOLYGON EMPTY MULTIPOLYGON EMPTY true