我在数据库上有一个DDL触发器。我想通过证书添加签名。我有完整的sa权限,但是当我尝试运行语句时
ADD SIGNATURE TO OBJECT::[objects_monitoring]
BY CERTIFICATE [mail_certificate]
WITH PASSWORD = 'password1';
GO
我收到以下错误
Msg 15151, Level 16, State 1, Line 2
Cannot alter the object 'objects_monitoring', because it does not exist or you do not have permission.
如何将签名添加到此DDL触发器?