Column.IsPersisted Property

项目
12/15/2008

Gets the Boolean property value that specifies whether the computed value of the Column object is saved with the data, thus avoiding a computation each time the column is accessed.

命名空间: Microsoft.SqlServer.Management.Smo
程序集: Microsoft.SqlServer.Smo (in microsoft.sqlserver.smo.dll)

语法

声明
Public Property IsPersisted As Boolean

public bool IsPersisted { get; set; }

public:
property bool IsPersisted {
    bool get ();
    void set (bool value);
}

/** @property */
public boolean get_IsPersisted ()

/** @property */
public void set_IsPersisted (boolean value)

public function get IsPersisted () : boolean

public function set IsPersisted (value : boolean)

属性值

A Boolean property value that specifies whether the computed value of the Column object is saved with the data. If True, the computed value of the Column object is saved with the data. If False (default), the computed value of the Column object is computed every time the column data is requested. The IsPersisted property can only be set to True for computed columns. Otherwise, it will cause an error.

备注

仅 Microsoft .NET Framework 的 2.0 版本支持此命名空间、类或成员。

示例

How to: Create, Alter, and Remove a Table in Visual Basic .NET

线程安全

Any public static (Shared in Microsoft Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

平台

开发平台

有关支持的平台列表，请参阅安装 SQL Server 2005 的硬件和软件要求。

目标平台