STGeometryN (geometry Data Type)
Returns a specified geometry in a geometry collection.
Składnia
.STGeometryN ( expression )
Arguments
- expression
Is an int expression between 1 and the number of geometry instances in the geometry collection.
Return Types
SQL Server return type: geometry
CLR return type: SqlGeometry
Uwagi
This method returns null if the parameter is larger than the result of STNumGeometries() and will throw an ArgumentOutOfRangeException if the expression parameter is less than 1.
Examples
The following example creates a MultiPoint geometry collection and uses STGeometryN() to find the second geometry instance of the collection.
DECLARE @g geometry;
SET @g = geometry::STGeomFromText('MULTIPOINT(0 0, 13.5 2, 7 19)', 0);
SELECT @g.STGeometryN(2).ToString();