Cannot execute as the database principal because the principal "guest" does not exist, this type of principal cannot be impersonated, or you do not have permission.

今天遇到这样一个问题：一个系统的作业需要给系统Support人员开放SQL Agent下作业的查看、执行权限。数据库版本为SQL Server 2014 SP2，给这个系统Support人员的NT账号授予msdb数据库下面权限后：今天遇到这样一个问题：一个系统的作业需要给系统Support人员开放SQL Agent下作业的