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Checks if the geometry is simple (no self-intersections or anomalous points). Returns 1 if simple, 0 otherwise.
ST_IsSimple(g) IsSimple(g)
Returns true if the given Geometry has no anomalous geometric points, false if it does, or NULL if given a NULL value.
ST_IsSimple() and IsSimple() are synonyms.
A POINT is always simple.
This page is licensed: CC BY-SA / Gnu FDL
SET @g = 'Point(1 2)'; SELECT ST_ISSIMPLE(GEOMFROMTEXT(@g)); +-------------------------------+ | ST_ISSIMPLE(GEOMFROMTEXT(@g)) | +-------------------------------+ | 1 | +-------------------------------+