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系統預存程序 (Transact-SQL)
系統資料表 (Transact-SQL)
系統檢視 (Transact-SQL)
sys.fn_builtin_permissions (Transact-SQL)
sys.fn_translate_permissions (Transact-SQL)
sys.login_token (Transact-SQL)
sys.user_token (Transact-SQL)
SYSTEM_USER (Transact-SQL)
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text (Transact-SQL)
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Expand Minimize
本主題尚未接受評分 - 為這個主題評分

ALTER CREDENTIAL (Transact-SQL)

SQL Server 2005

變更認證的屬性。

主題連結圖示 Transact-SQL 語法慣例

複製 

ALTER CREDENTIAL credential_name WITH IDENTITY = 'identity_name'
    [ , SECRET = 'secret' ]
credential_name

指定正在變更的認證名稱。

IDENTITY = 'identity_name'

指定連接到伺服器外部時所要使用的帳戶名稱。

SECRET = 'secret'

指定外寄驗證所需的秘密。secret 是選擇性的。

當您變更認證時，會重設 identity_name 和 secret 的值。如果未指定選擇性 SECRET 引數，預存秘密的值便會設為 NULL。

秘密是利用服務主要金鑰來加密的。如果重新產生服務主要金鑰，便會利用新的服務主要金鑰來重新加密秘密。

您可以在 sys.credentials 目錄檢視中，看到有關認證的資訊。

需要 ALTER ANY CREDENTIAL 權限。如果認證是系統認證，則需要 CONTROL SERVER 權限。

A. 變更認證的密碼

下列範例會變更儲存在稱為 Saddles 之認證中的秘密。這個認證包含 Windows 登入 RettigB 及其密碼。使用 SECRET 子句將新的密碼加入認證中。

複製 
ALTER CREDENTIAL Saddles WITH IDENTITY = 'RettigB', 
    SECRET = 'sdrlk8$40-dksli87nNN8';
GO

B. 從認證移除密碼

下列範例會從稱為 Frames 的認證中移除密碼。這個認證包含 Windows 登入 Aboulrus8 和密碼。由於未指定 SECRET 選項，因此在執行陳述式之後，認證的密碼為 NULL。

複製 
ALTER CREDENTIAL Frames WITH IDENTITY = 'Aboulrus8';
GO
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