STGeometryType (geometry Data Type)
Returns the Open Geospatial Consortium (OGC) type name represented by a geometry instance.
Applies to: SQL Server (SQL Server 2008 through current version), Azure SQL Database.
The following example creates a Polygon instance and uses STGeometryType() to confirm that it is a polygon.
DECLARE @g geometry; SET @g = geometry::STGeomFromText('POLYGON((0 0, 3 0, 3 3, 0 3, 0 0))', 0); SELECT @g.STGeometryType();