Méthode Index.EnumStatistics
Enumerates a list of statistical information for the index.
Espace de noms : Microsoft.SqlServer.Management.Smo
Assembly : Microsoft.SqlServer.Smo (en Microsoft.SqlServer.Smo.dll)
Syntaxe
'Déclaration
Public Function EnumStatistics As DataSet
'Utilisation
Dim instance As Index
Dim returnValue As DataSet
returnValue = instance.EnumStatistics()
public DataSet EnumStatistics()
public:
DataSet^ EnumStatistics()
member EnumStatistics : unit -> DataSet
public function EnumStatistics() : DataSet
Valeur de retour
Type : System.Data.DataSet
A DataSet system object value that contains an enumerated list of statistical information. The DataSet contains a set of DataTable objects, which contain the following columns:
Column |
Data type |
Description |
|---|---|---|
RANGE_ROWS |
The estimated number of rows from the table that fall within a histogram step, excluding the upper bound. |
|
EQ_ROWS |
The estimated number of rows from the table that are equal in value to the upper bound of the histogram step. |
|
DISTICT_RANGE_ROWS |
The estimated number of distinct values within a histogram step, excluding the upper bound. |
|
RANGE_HI_KEY |
The upper bound value of a histogram step. |
Notes
[!REMARQUE]
Indexes based on the UserDefinedTableType object do not support statistics and running this method will generate an exception.
Exemples
Création, modification et suppression d'index
Voir aussi
Référence
Espace de noms Microsoft.SqlServer.Management.Smo