IDatabaseOptions.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。
示例
How to Get and Set a Property in Visual Basic .NET
请参阅
参考
Microsoft.SqlServer.Management.Smo 命名空间