Name
ST_Multi — 도형을 멀티 유형 도형으로 반환합니다.
Synopsis
geometry ST_Multi(geometry geom);
설명
Returns the geometry as a MULTI* geometry collection. If the geometry is already a collection, it is returned unchanged.
예시
SELECT ST_AsText(ST_Multi('POLYGON ((10 30, 30 30, 30 10, 10 10, 10 30))'));
st_astext
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MULTIPOLYGON(((10 30,30 30,30 10,10 10,10 30)))