ST_IsSimple

Test if geometry’s only self-intersections are at boundary points.

Signatures

ST_IsSimple (A: Geometry)

Geometry

required

The input geometry.

Returns true or false.

SELECT ST_IsSimple(ST_GeomFromWKT('POLYGON((1 1, 3 1, 3 3, 1 3, 1 1))'))

true

⌘I