STGeometryN (geometry Data Type)

 

Returns a specified geometry in a geometry collection.

Applies to: SQL Server (SQL Server 2008 through current version), Azure SQL Database.
  
.STGeometryN ( expression )  

expression
Is an int expression between 1 and the number of geometry instances in the geometrycollection.

SQL Server return type: geometry

CLR return type: SqlGeometry

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.

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();  

OGC Methods on Geometry Instances

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