STNumPoints (geometry Data Type)

Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance SQL analytics endpoint in Microsoft Fabric Warehouse in Microsoft Fabric

Returns the sum of the number of points in each of the figures in a geometry instance.


.STNumPoints ( )  


To view Transact-SQL syntax for SQL Server 2014 (12.x) and earlier versions, see Previous versions documentation.

Return Types

SQL Server return type: int

CLR return type: SqlInt32


This method counts the points in the description of a geometry instance. Duplicate points are counted. If this instance is a collection type, this method returns the sum of the points in each of its elements.


The following example creates a LineString instance and uses STNumPoints() to determine how many points were used in the description of the instance.

DECLARE @g geometry;  
SET @g = geometry::STGeomFromText('LINESTRING(0 0, 2 2, 1 0)', 0);  
SELECT @g.STNumPoints();  

See Also

OGC Methods on Geometry Instances