Méthode SqlGeometry.Filter

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

Espace de noms :  Microsoft.SqlServer.Types
Assembly :  Microsoft.SqlServer.Types (en Microsoft.SqlServer.Types.dll)

Syntaxe

'Déclaration
<SqlMethodAttribute(IsDeterministic := True, IsPrecise := False)> _
Public Function Filter ( _
    other As SqlGeometry _
) As SqlBoolean
'Utilisation
Dim instance As SqlGeometry 
Dim other As SqlGeometry 
Dim returnValue As SqlBoolean 

returnValue = instance.Filter(other)

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

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

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

public function Filter(
    other : SqlGeometry
) : SqlBoolean

Paramètres

• other
  Type : Microsoft.SqlServer.Types.SqlGeometry
  Specifies the SqlGeometry instance to compare to the current SqlGeometry.

Valeur de retour

Type : System.Data.SqlTypes.SqlBoolean
A SqlBoolean that specifies whether the specified SqlGeometry intersects the calling SqlGeometry. If the instances do intersect, this method returns true. Otherwise, it returns false.

Notes

This method returns true if a SqlGeometry instance potentially intersects another SqlGeometry instance. This method may produce a false positive return, and the exact result may be plan-dependent. Returns an accurate false value (true negative return) if there is no intersection of SqlGeometry instances found.

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.

Voir aussi

Référence

SqlGeometry Classe

Espace de noms Microsoft.SqlServer.Types