STGeometryN (geometry Data Type)

APPLIES TO: yesSQL Server yesAzure SQL Database noAzure Synapse Analytics (SQL DW) noParallel Data Warehouse

Returns a specified geometry in a geometry collection.


.STGeometryN ( expression )  


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

Return Types

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();  

See Also

OGC Methods on Geometry Instances