Index.EnumStatistics 方法
Enumerates a list of statistical information for the index.
命名空間： Microsoft.SqlServer.Management.Smo
組件： Microsoft.SqlServer.Smo (在 Microsoft.SqlServer.Smo.dll 中)
語法
'宣告
Public Function EnumStatistics As DataSet
'用途
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
傳回值
型別：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. |
備註
[!附註]
Indexes based on the UserDefinedTableType object do not support statistics and running this method will generate an exception.
範例
請參閱
參考
Microsoft.SqlServer.Management.Smo 命名空間