UserOptions.AnsiNullDefaultOn 属性

项目
04/26/2013

Gets or sets the Boolean property value that specifies whether new columns created allow null values by default or not.

命名空间： Microsoft.SqlServer.Management.Smo
程序集： Microsoft.SqlServer.Smo（在 Microsoft.SqlServer.Smo.dll 中）

语法

声明
<SfcPropertyAttribute(SfcPropertyFlags.None Or SfcPropertyFlags.Standalone Or SfcPropertyFlags.Deploy,  _
    "true")> _
Public Property AnsiNullDefaultOn As Boolean 
    Get 
    Set
用法
Dim instance As UserOptions 
Dim value As Boolean 

value = instance.AnsiNullDefaultOn

instance.AnsiNullDefaultOn = value

[SfcPropertyAttribute(SfcPropertyFlags.None|SfcPropertyFlags.Standalone|SfcPropertyFlags.Deploy, 
    "true")]
public bool AnsiNullDefaultOn { get; set; }

[SfcPropertyAttribute(SfcPropertyFlags::None|SfcPropertyFlags::Standalone|SfcPropertyFlags::Deploy, 
    L"true")]
public:
property bool AnsiNullDefaultOn {
    bool get ();
    void set (bool value);
}

[<SfcPropertyAttribute(SfcPropertyFlags.None|SfcPropertyFlags.Standalone|SfcPropertyFlags.Deploy, 
    "true")>]
member AnsiNullDefaultOn : bool with get, set

function get AnsiNullDefaultOn () : boolean 
function set AnsiNullDefaultOn (value : boolean)

属性值

类型：System.Boolean
A Boolean value that specifies the whether newly created columns allow nulls by default or not. If True, new columns created allow null values by default. If False (default), new columns create do not allow null values by default.

注释

This property is mutually exclusive of the AnsiNullDefaultOff property. An exception occurs if you attempt to set both properties to True simultaneously. In SQL Server Management Objects (SMO) the default nullability of a new column can be overridden by setting the Nullable property of the Column object. In Transact-SQL the default nullability of a new column can be overridden by adding the NULL or NOT NULL clause to the CREATE or ALTER TABLE statement.