SqlGeography.STPointN 메서드

SQL Server 2012

Returns the specified point in a SqlGeography instance.

네임스페이스:  Microsoft.SqlServer.Types
어셈블리:  Microsoft.SqlServer.Types(Microsoft.SqlServer.Types.dll)

[SqlMethodAttribute(IsDeterministic = true, IsPrecise = true)]
public SqlGeography STPointN(
	int n
)

매개 변수

n
유형: System.Int32
An int expression between 1 and the number of points in the SqlGeography instance.

반환 값

유형: Microsoft.SqlServer.Types.SqlGeography
A SqlGeography representing the specified point in the calling instance.

If a SqlGeography instance is user-created, the STPointN method returns the point specified by expression by ordering the points in the order in which they were originally input.

If a SqlGeography instance is constructed by the system, STPointN returns the point specified by expression by ordering all the points in the same order they would be output: first by geography instance, then by ring within the instance (if appropriate), and then by point within the ring. This order is deterministic.

If this method is called with a value less than 1, it throws an ArgumentOutOfRangeException.

If this method is called with a value greater than the number of points in the instance, it returns null.

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