创建和更新统计信息

示例

若要使用所提供的任何代码示例，您必须选择创建应用程序所需的编程环境、编程模板和编程语言。有关详细信息，请参阅如何在 Visual Studio .NET 中创建 Visual Basic SMO 项目或如何在 Visual Studio .NET 中创建 Visual C# SMO 项目。

在 Visual Basic 中创建和更新统计信息

此代码示例将对为其创建 Statistic 对象和 StatisticColumn 对象的现有数据库创建新表。

'Connect to the local, default instance of SQL Server.
Dim srv As Server
srv = New Server
'Reference the AdventureWorks database.
Dim db As Database
db = srv.Databases("AdventureWorks")
'Reference the CreditCard table.
Dim tb As Table
tb = db.Tables("CreditCard", "Sales")
'Define a Statistic object by supplying the parent table and name arguments in the constructor.
Dim stat As Statistic
stat = New Statistic(tb, "Test_Statistics")
'Define a StatisticColumn object variable for the CardType column and add to the Statistic object variable.
Dim statcol As StatisticColumn
statcol = New StatisticColumn(stat, "CardType")
stat.StatisticColumns.Add(statcol)
'Create the statistic counter on the instance of SQL Server.
stat.Create()

在 Visual C# 中创建和更新统计信息

此代码示例将对为其创建 Statistic 对象和 StatisticColumn 对象的现有数据库创建新表。

{ 
//Connect to the local, default instance of SQL Server. 
   Server srv = default(Server); 
   srv = new Server(); 
   //Reference the AdventureWorks database. 
   Database db = default(Database); 
   db = srv.Databases("AdventureWorks"); 
   //Reference the CreditCard table. 
   Table tb = default(Table); 
   tb = db.Tables("CreditCard", "Sales"); 
   //Define a Statistic object by supplying the parent table and name 
   //arguments in the constructor. 
   Statistic stat = default(Statistic); 
   stat = new Statistic(tb, "Test_Statistics"); 
   //Define a StatisticColumn object variable for the CardType column 
   //and add to the Statistic object variable. 
   StatisticColumn statcol = default(StatisticColumn); 
   statcol = new StatisticColumn(stat, "CardType"); 
   stat.StatisticColumns.Add(statcol); 
   //Create the statistic counter on the instance of SQL Server. 
   stat.Create(); 
}