STDifference 方法
Returns an object representing the points from one SqlGeography instance that do not lie within another SqlGeography instance.
命名空间： Microsoft.SqlServer.Types
程序集： Microsoft.SqlServer.Types（在 Microsoft.SqlServer.Types.dll 中）
语法
声明
<SqlMethodAttribute(IsDeterministic := True, IsPrecise := False)> _
Public Function STDifference ( _
other As SqlGeography _
) As SqlGeography
用法
Dim instance As SqlGeography
Dim other As SqlGeography
Dim returnValue As SqlGeography
returnValue = instance.STDifference(other)
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)]
public SqlGeography STDifference(
SqlGeography other
)
[SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)]
public:
SqlGeography^ STDifference(
SqlGeography^ other
)
[<SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)>]
member STDifference :
other:SqlGeography -> SqlGeography
public function STDifference(
other : SqlGeography
) : SqlGeography
参数
- other
类型：Microsoft.SqlServer.Types. . :: . .SqlGeography
Another SqlGeography instance that indicates which points to remove from the instance on which this method is being invoked.
返回值
类型：Microsoft.SqlServer.Types. . :: . .SqlGeography
A SqlGeography value that represents all of the points that are unique to the calling instance.
注释
This method always returns null if the spatial reference IDs (SRIDs) of the SqlGeography instances do not match.