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geometry (Transact-SQL)
geometry Data Type Method Reference
OGC Methods on Geometry Instances
STArea (geometry Data Type)
STAsBinary (geometry Data Type)
STAsText (geometry Data Type)
STBoundary (geometry Data Type)
STBuffer (geometry Data Type)
STCentroid (geometry Data Type)
STContains (geometry Data Type)
STConvexHull (geometry Data Type)
STCrosses (geometry Data Type)
STCurveN (geometry Data Type)
STCurveToLine (geometry Data Type)
STDifference (geometry Data Type)
STDimension (geometry Data Type)
STDisjoint (geometry Data Type)
STDistance (geometry Data Type)
STEndpoint (geometry Data Type)
STEnvelope (geometry Data Type)
STEquals (geometry Data Type)
STExteriorRing (geometry Data Type)
STGeometryN (geometry Data Type)
STGeometryType (geometry Data Type)
STInteriorRingN (geometry Data Type)
STIntersection (geometry Data Type)
STIntersects (geometry Data Type)
STIsClosed (geometry Data Type)
STIsEmpty (geometry Data Type)
STIsRing (geometry Data Type)
STIsSimple (geometry Data Type)
STIsValid (geometry Data Type)
STLength (geometry Data Type)
STNumCurves (geometry Data Type)
STNumGeometries (geometry Data Type)
STNumInteriorRing (geometry Data Type)
STNumPoints (geometry Data Type)
STOverlaps (geometry Data Type)
STPointN (geometry Data Type)
STPointOnSurface (geometry Data Type)
STRelate (geometry Data Type)
STSrid (geometry Data Type)
STStartPoint (geometry Data Type)
STSymDifference (geometry Data Type)
STTouches (geometry Data Type)
STUnion (geometry Data Type)
STWithin (geometry Data Type)
STX (geometry Data Type)
STY (geometry Data Type)
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STGeometryType (geometry Data Type)

SQL Server 2012

Returns the Open Geospatial Consortium (OGC) type name represented by a geometry instance.

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.STGeometryType ( )

SQL Server return type: nvarchar(4000)

CLR return type: SqlString

The OGC type names that can be returned by STGeometryType() are Point, LineString, CircularString, CompoundCurve, Polygon, CurvePolygon, GeometryCollection, MultiPoint, MultiLineString, and MultiPolygon.

The following example creates a Polygon instance and uses STGeometryType() to confirm that it is a polygon.

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DECLARE @g geometry;
SET @g = geometry::STGeomFromText('POLYGON((0 0, 3 0, 3 3, 0 3, 0 0))', 0);
SELECT @g.STGeometryType();
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