ST_IsRing

RETURN true if LINESTRING is ST_IsClosed and ST_IsSimple.

Signatures

ST_IsRing(geom: Geometry)

geom

Geometry

required

The input geometry.

Returns true or false.

SELECT ST_IsRing(ST_GeomFromText('LINESTRING(0 0, 0 1, 1 1, 1 0, 0 0)'))

true

⌘I