InstanceOf (geography Data Type)
A method that tests if the geography instance is the same as the specified type. Returns 1 if the type of a geography instance is the same as the specified type, or if the specified type is an ancestor of the instance type; otherwise, returns 0.
The following example creates a MultiPoint instance and uses InstanceOf() to see if the instance is a GeometryCollection.
DECLARE @g geography; SET @g = geography::STGeomFromText('MULTIPOINT(-122.360 47.656, -122.343 47.656)', 4326); SELECT @g.InstanceOf('GEOMETRYCOLLECTION');