Question

我正在研究一个触发器，它允许我将Customer表上指定列中的所有先前数据存储到指定的audit-table中。我从客户表和存储中获取的字段是特定的，因为customers表上有多个字段，我只是试图存储（ CustomerID，CustomerAddress和CustomerPostcod e）

以下是Customer表中的字段：

   [CustomerID]
   [CustomerName]
   [CustomerAddress]
   [CustomerPostcode]
   [CustomerTelephone]
   [CardNumber]
   [CountyID]

我只想尝试 [CustomerID] ， [CustomerAddress] 和 [CustomerPostcode]

为了存储这些特定字段，我尽我所能设置了一个审计表，它将存储这些字段，但也会根据触发器显示自动生成的字段。

以下是我设置的审核表：

CREATE TABLE Customer_Audit

(

Cust_UpdateID int IDENTITY (1,1),
Cust_User char (8),
Cust_Update_Date date,
CustomerID int, 
CustomerAddresss nvarchar (255),
CustomerPostCode nvarchar (255),

CONSTRAINT [pk_Cust_UpdateID] PRIMARY KEY (Cust_UpdateID)

)

这是我设置的触发器查询：

 CREATE TRIGGER Customer_Update_Trigger ON tblCustomer
 AFTER UPDATE
 AS

 BEGIN
 INSERT INTO Customer_Audit (Cust_User, Cust_Update_Date, Cust_ID, CustomerAddresss, CustomerPostCode)

 SELECT 

 CURRENT_USER,
 GETDATE(),
 d.CustomerID,
 d.CustomerAddress, 
 d.CustomerPostcode

FROM deleted 

END

为了存储数据，我正在尝试从删除的表中获取字段，但每次执行此操作时，我都会收到以下错误消息：

Msg 4104, Level 16, State 1, Procedure Customer_Update_Trigger, Line 11
The multi-part identifier "d.CustomerID" could not be bound.

Msg 4104, Level 16, State 1, Procedure Customer_Update_Trigger, Line 12
The multi-part identifier "d.CustomerAddress" could not be bound.

Msg 4104, Level 16, State 1, Procedure Customer_Update_Trigger, Line 13
The multi-part identifier "d.CustomerPostcode" could not be bound

我不知道它是什么我做错了，我知道已删除表中的字段名称与customer表中的字段名称匹配，但仍然拒绝处理。

Answer 1

您错过了deleted的别名，请尝试添加FROM deleted as d

CREATE TRIGGER Customer_Update_Trigger ON tblCustomer
AFTER UPDATE AS
BEGIN;
INSERT INTO Customer_Audit (
    Cust_User
  , Cust_Update_Date
  , Cust_ID
  , CustomerAddresss
  , CustomerPostCode
  )
SELECT 
    CURRENT_USER
  , GETDATE()
  , d.CustomerID
  , d.CustomerAddress
  , d.CustomerPostcode
FROM deleted as d;
END;

如何修复触发器查询以便绑定多部分标识符？

1 个答案: