插入到歷史表後，我需要如何再次更新

-1

我有交易表和交易歷史表。我已經寫了更新觸發器，它將維護歷史記錄表中的更新記錄，它不會允許複製，但如何更新ISActive列，當它將狀態更新爲Y或N時.Record正在維護，但如何更新對同一記錄所做的更改複製插入到歷史表後，我需要如何再次更新

ALTER TRIGGER [dbo].[trg_Transaction] 
    ON [dbo].[Transaction_Details] 
    FOR UPDATE 
    AS 

    Declare @ApplicationNo varchar(20); 
    Declare @PaymentID varchar(20); 
     Declare @CreatedBy varchar(20) 
    DECLARE @CreatedDate DATETIME ; 
    DECLARE @UpdatedDate DATETIME ; 
    DECLARE @UpdatedBy VARCHAR(20) ; 
    DECLARE @IsActive CHAR(2) 

    Select @ApplicationNo = I.ApplicationNo from INSERTED I 
    Select @PaymentID = I.PaymentID from INSERTED I 
    Select @CreatedDate = CAST(I.CreatedDate AS DATETIME) from INSERTED I 
    Select @UpdatedDate = CAST(I.UpdatedDate AS DATETIME)from INSERTED I 
    Select @UpdatedBy = I.UpdatedBy from INSERTED I 
    Select @IsActive = I.IsActive from INSERTED I 

    INSERT INTO [BPS].[dbo].[Transaction_Details_History] 
      ([ApplicationNo] 
      ,[PaymentID] 
      ,[CreatedBy] 
      ,[UpdatedDate] 
      ,[UpdatedBy] 
      ,[IsActive]) 

      SELECT @ApplicationNo, 
       @PaymentID, 
       @CreatedBy, 
       @UpdatedDate, 
       @UpdatedBy, 
       @IsActive 
        FROM INSERTED I 
      WHERE NOT EXISTS 
      (SELECT 
       [ApplicationNo] 
      ,[PaymentID] 
      ,[CreatedBy] 
      ,[UpdatedDate] 
      ,[UpdatedBy] 
      ,[IsActive] 

        FROM [Transaction_Details_History] 
      WHERE @ApplicationNo = [ApplicationNo] 
) 
GO

來源

2015-06-10 mohan111

只是做一個更新 –

你的邏輯並不清楚，但有一點是清楚的是，你的觸發不正確寫入，它被設計只用於更新單行上班，而在現實中的記憶居民表「插入」可以包含多行。你是什麼意思*「我怎樣才能更新對同一記錄沒有重複的變化」*？ – GarethD

你可能想看看'merge'語句。 – jpw

可以使用MERGE做到這一點，你只需檢查，看是否有記錄存在，如果沒有更新，如果不將其插入

ALTER TRIGGER [dbo].[trg_Transaction] 
ON [dbo].[Transaction_Details] 
FOR UPDATE 
AS 
BEGIN 

MERGE dbo.Transaction_Details_History AS h 
USING inserted AS i 
    ON i.ApplicationNo = h.ApplicationNo 
WHEN MATCHED THEN UPDATE 
    SET PaymentID = i.PaymentID, 
     CreatedBy = i.CreatedBy, 
     UpdatedDate = i.UpdatedDate, 
     UpdatedBy = i.UpdatedDate, 
     IsActive = i.IsActive 
WHEN NOT MATCHED BY TARGET THEN 
    INSERT (ApplicationNo, PaymentID, CreatedBy, UpdatedDate, UpdatedBy, IsActive) 
    VALUES (i.ApplicationNo, i.PaymentID, i.CreatedBy, i.UpdatedDate, i.UpdatedBy, i.IsActive) 

END 
GO

如果你只想更新歷史如果IsActive更改，則記錄，然後您可以將條件添加到MATCHED子句：

MERGE dbo.Transaction_Details_History AS h 
USING inserted AS i 
    ON i.ApplicationNo = h.ApplicationNo 
WHEN MATCHED AND i.IsActive <> h.IsActive THEN UPDATE 
    SET PaymentID = i.PaymentID, 
     CreatedBy = i.CreatedBy, 
     UpdatedDate = i.UpdatedDate, 
     UpdatedBy = i.UpdatedDate, 
     IsActive = i.IsActive 
WHEN NOT MATCHED BY TARGET THEN 
    INSERT (ApplicationNo, PaymentID, CreatedBy, UpdatedDate, UpdatedBy, IsActive) 
    VALUES (i.ApplicationNo, i.PaymentID, i.CreatedBy, i.UpdatedDate, i.UpdatedBy, i.IsActive)

來源

2015-06-10 11:36:38 GarethD

插入到歷史表後，我需要如何再次更新

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