ST_ForceSFS — 도형이 SFS 1.1 도형 유형만을 쓰도록 강제합니다.
geometry ST_ForceSFS(
geometry geomA)
;
geometry ST_ForceSFS(
geometry geomA, text version)
;
This function supports Polyhedral surfaces.
This function supports Triangles and Triangulated Irregular Network Surfaces (TIN).
This method supports Circular Strings and Curves.
This function supports 3d and will not drop the z-index.