Question

我有四个表不断截断，然后每五分钟从另一个系统插入和更新数据到SQL Server。所以我需要创建一个更新并插入触发器来使用if exists或merge更新SQL Server中的另一个。

Select 
[Barcode]
 ,[TradingPartnerOrderNo]
 ,[ProductNo]
 ,[BarcodeCreatedDateTime]
 ,[BarcodeScheduledDateTime]
 ,[CancelledIndicator]
 ,[CancelledDateTime]
 ,[SiteIndicator]
 ,[InterfaceTimeStamp]
 ,[OperationDate]
 ,[Operation]
from [dbo].[BookingView]

Answer 1

如果您使用的是SQL Server 2008+，则可以使用MERGE来执行此操作。像这样：

MERGE INTO table2 AS TGT
USING
(

    Select 
      [Barcode]
     ,[TradingPartnerOrderNo]
     ,[ProductNo]
     ,[BarcodeCreatedDateTime]
     ,[BarcodeScheduledDateTime]
     ,[CancelledIndicator]
     ,[CancelledDateTime]
     ,[SiteIndicator]
     ,[InterfaceTimeStamp]
     ,[OperationDate]
     ,[Operation]
    FROM [dbo].[BookingView]
) AS SRC ON  SRC.Barcode = TGT.BarCode AND
WHEN NOT MATCHED THEN
  INSERT (Barcode, TradingPartnerOrderNo, ...)
  VALUES (SRC.Barcode, SRC.TradingPartnerOrderNo, ...);

Answer 2

对我而言，你的需求并不是很清楚，但这是一个触发器示例：

CREATE TRIGGER [dbo].[up_update_mytable]
ON [dbo].[MyTable] FOR UPDATE
AS
DECLARE @ID VARCHAR(50)

SELECT @ID = ID FROM INSERTED --Use INSERTED keyword for insert and update triggers to get informations of the inserted or updated record.

UPDATE MyOtherTable SET
Column1 = 'test value',
Column2 = 'test value 2'
WHERE OtherTableID = @ID

更新并插入触发器

2 个答案: