Question

我在我的SSIS包中使用Merge Statement。问题是，当我运行包时，它不会更新datetime列。它正确插入日期时间，但如果源数据库中有新的日期时间，则不会将它们从NULL更新到某个日期时间。源和目标都具有相同的列类型（datetime（2），null）。截断登台表后，我在SQL任务中使用下面的代码。

MERGE abc.dbo.invoices AS targe

USING (SELECT 

   ID      
  ,cash_received_date
  ,schedule_datetime
  ,delivery_date

FROM Staging.dbo.tmpabcinvoices) AS sourc
ON targe.id = sourc.id
WHEN MATCHED and  
targe.schedule_datetime <> sourc.schedule_datetime
or
targe.delivery_date <> sourc.delivery_date
or
targe.cash_received_date <> sourc.cash_received_date

THEN UPDATE SET 
,targe.schedule_datetime=sourc.schedule_datetime
,targe.delivery_date=sourc.delivery_date
,targe.cash_received_date=sourc.cash_received_date

WHEN NOT MATCHED THEN
INSERT(

      old_invoiceid         
      ,cash_received_date
      ,schedule_datetime
      ,delivery_date

)
VALUES
(

      sourc.old_invoiceid
      ,sourc.cash_received_date
      ,sourc.schedule_datetime
      ,sourc.delivery_date

);
GO

Answer 1

你有一个逗号，不应该在这一行的开头：

,targe.schedule_datetime=sourc.schedule_datetime

另外，你需要添加它来处理NULL：

targe.schedule_datetime <> sourc.schedule_datetime
or (targe.schedule_datetime IS NULL AND sourc.schedule_datetime IS NOT NULL)
or targe.delivery_date <> sourc.delivery_date
or (targe.delivery_date IS NULL AND sourc.delivery_date IS NOT NULL)
or targe.cash_received_date <> sourc.cash_received_date
or (targe.cash_received_date IS NULL AND sourc.cash_received_date IS NOT NULL)

当ANSI_NULLS设置为ON时，NULL基本上是未知数，因此无法将它们评估为“等于”或“不等于”。

SSIS合并规则日期时间未更新

1 个答案: