Returns the Open Geospatial Consortium (OGC) type name represented by a geography instance.
SQL Server return type: nvarchar(4000)
CLR return type: SqlString
The OGC type names that can be returned by STGeometryType() are Point, LineString, Polygon, GeometryCollection, MultiPoint, MultiLineString, and MultiPolygon.
The following example uses STGeometryType() to create a Polygon instance and confirms that it is a polygon.
DECLARE @g geometry;
SET @g = geometry::STGeomFromText('POLYGON((-122.358 47.653, -122.348 47.649, -122.348 47.658, -122.358 47.658, -122.358 47.653))', 4326);
SELECT @g.STGeometryType();
Other Resources
OGC Methods on Geography Instances
Help and Information
Getting SQL Server 2008 Assistance