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ConcatenateNullYieldsNull 属性

Gets or sets a Boolean property value that specifies whether the CONCAT_NULL_YIELDS_NULL database option is active.

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

语法

声明
<DisplayDescriptionKeyAttribute("Database_ConcatenateNullYieldsNullDesc")> _
<DisplayNameKeyAttribute("Database_ConcatenateNullYieldsNullName")> _
Property ConcatenateNullYieldsNull As Boolean
    Get
    Set
用法
Dim instance As IDatabaseOptions
Dim value As Boolean

value = instance.ConcatenateNullYieldsNull

instance.ConcatenateNullYieldsNull = value

[DisplayDescriptionKeyAttribute("Database_ConcatenateNullYieldsNullDesc")]
[DisplayNameKeyAttribute("Database_ConcatenateNullYieldsNullName")]
bool ConcatenateNullYieldsNull { get; set; }

[DisplayDescriptionKeyAttribute(L"Database_ConcatenateNullYieldsNullDesc")]
[DisplayNameKeyAttribute(L"Database_ConcatenateNullYieldsNullName")]
property bool ConcatenateNullYieldsNull {
    bool get ();
    void set (bool value);
}

[<DisplayDescriptionKeyAttribute("Database_ConcatenateNullYieldsNullDesc")>]
[<DisplayNameKeyAttribute("Database_ConcatenateNullYieldsNullName")>]
abstract ConcatenateNullYieldsNull : bool with get, set

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

属性值

类型：System. . :: . .Boolean
A Boolean value that specifies whether the CONCAT_NULL_YIELDS_NULL database option is active.
If True, the concatenated result is NULL.
If False (default), the value is concatenated with a zero string.

注释

This property specifies whether a value that is concatenated with a null value results in a null value or in a zero string.

此选项还可使用 Transact-SQL ALTER DATABASE 语句来更改。