STNumPoints (geometry Data Type)
Applies to: SQL Server (all supported versions) Azure SQL Database Azure SQL Managed Instance
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 and earlier, see Previous versions documentation.
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();