UserOptions.AnsiNulls Property

2008-12-15

Gets or sets the Boolean property value that specifies whether null values can be used in comparisons or not.

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 AnsiNulls As Boolean

public bool AnsiNulls { get; set; }

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

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

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

public function get AnsiNulls () : boolean

public function set AnsiNulls (value : boolean)

属性值

A Boolean value that specifies the whether null values can be used in comparisons. If True, null values cannot be used in an equals or not equals comparison. The result will be null. If False (default), null values can be used in equals or not equals comparisons.

备注

The SQL-92 ANSI standard requires that an equals (=) or not equal to (<>) comparison against a null value evaluates to FALSE.

This property overrides the AnsiNullsEnabled of the DatabaseOptions object property setting.

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

示例

How to: Modify SQL Server Settings 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.