通过

Filter 方法

Offers a fast, index-only intersection method to determine if a geography instance intersects another SqlGeography instance, assuming an index is available.

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 Filter ( _
    other As SqlGeography _
) As SqlBoolean
用法
Dim instance As SqlGeography
Dim other As SqlGeography
Dim returnValue As SqlBoolean

returnValue = instance.Filter(other)

[SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)]
public SqlBoolean Filter(
    SqlGeography other
)

[SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)]
public:
SqlBoolean Filter(
    SqlGeography^ other
)

[<SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)>]
member Filter : 
        other:SqlGeography -> SqlBoolean 

public function Filter(
    other : SqlGeography
) : SqlBoolean

参数

返回值

类型：System.Data.SqlTypes. . :: . .SqlBoolean
A SqlBoolean value that specifies whether the specified SqlGeography instance intersects the current SqlGeography.
Returns 1 if a geography instance potentially intersects another SqlGeography instance. This method may produce a false-positive return, and the exact result may be plan-dependent. Returns an accurate 0 value (true negative return) if there is no intersection of SqlGeography instances found.

注释

In cases where an index is not available, or is not used, the method will return the same values as STIntersects when called with the same parameters.

This method is not deterministic and is not precise.