Column.UpdateStatistics 方法 (StatisticsScanType, Int32, Boolean)
Updates Statistic objects that monitor this column using a sampled scan.
命名空间： Microsoft.SqlServer.Management.Smo
程序集： Microsoft.SqlServer.Smo（在 Microsoft.SqlServer.Smo.dll 中）
语法
声明
Public Sub UpdateStatistics ( _
scanType As StatisticsScanType, _
sampleValue As Integer, _
recompute As Boolean _
)
用法
Dim instance As Column
Dim scanType As StatisticsScanType
Dim sampleValue As Integer
Dim recompute As Boolean
instance.UpdateStatistics(scanType, sampleValue, _
recompute)
public void UpdateStatistics(
StatisticsScanType scanType,
int sampleValue,
bool recompute
)
public:
void UpdateStatistics(
StatisticsScanType scanType,
int sampleValue,
bool recompute
)
member UpdateStatistics :
scanType:StatisticsScanType *
sampleValue:int *
recompute:bool -> unit
public function UpdateStatistics(
scanType : StatisticsScanType,
sampleValue : int,
recompute : boolean
)
参数
- scanType
类型：Microsoft.SqlServer.Management.Smo.StatisticsScanType
A StatisticsScanType object value that specifies the type operation to perform during the creation or update of a Statistic object.
- sampleValue
类型：System.Int32
An Int32 value that specifies the number of rows or percentage of the total number of rows to use in a sampled scan. This parameter is required only when the scanType indicates a sampled scan.
- recompute
类型：System.Boolean
A Boolean value that specifies whether the statistics will be automatically recomputed or not.If True, the statistics are automatically recomputed. Otherwise, False.
注释
.gif "注意") 注意 |
|---|
Columns based on the UserDefinedTableType object cannot be modified and this method generates an exception. |
示例
请参阅
参考
Microsoft.SqlServer.Management.Smo 命名空间