Setuser 因下列其中一個原因而失敗: 資料庫主體 '%1' 不存在，其對應的伺服器主體沒有伺服器存取權，無法模擬這類型資料庫主體，或者您沒有權限。

Setuser failed because of one of the following reasons: the database principal '%1' does not exist, its corresponding server principal does not have server access, this type of database principal cannot be impersonated, or you do not have permission.