User2 Object
后续版本的 Microsoft SQL Server 将删除该功能。 请避免在新的开发工作中使用该功能，并着手修改当前还在使用该功能的应用程序。
The User2 object exposes the attributes of a single Microsoft SQL Server database user and extends the functionality of the User object.
注释
The User2 object extends the functionality of the User object for use with features that were introduced in SQL Server 2000. It also inherits the properties and methods of the User object.
The IsDeleted property of the User2 object may not be compatible with instances of SQL Server version 7.0 or earlier. For information about using the User2 object in an application that also runs with an instance of SQL Server 7.0, refer to the Remarks section of the IsDeleted property. For more information, see Programming Extended SQL-DMO Objects.