Question

我有物理表来保存ID，以及插入，删除，更新数据的时间并使用基表附加我的触发器（插入，更新和删除后）。它是一种跟踪。

插入的记录和删除的记录很好，但问题是我没有在基表中获取更新记录的任何记录！插入和删除的记录。

如果我在这里遗漏任何东西，请帮助我。

触发插入和更新操作：

CREATE TRIGGER [dbo].[trArticleAttachmentTrack]
   ON  [dbo].[ArticleAttachment]
   AFTER INSERT, UPDATE
AS 
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    SET NOCOUNT ON;

    INSERT INTO TrackArticleAttachmentTbl (ArticleAttachmentID, ActionOn)
    SELECT i.ArticleAttachmentID, GETDATE() FROM inserted i

END

GO

触发删除操作：

CREATE TRIGGER [dbo].[trArticleAttachmentTrackDelete]
   ON  [dbo].[ArticleAttachment]
   AFTER DELETE
AS 
BEGIN
    -- SET NOCOUNT ON added to prevent extra result sets from
    SET NOCOUNT ON;

    INSERT INTO TrackArticleAttachmentTblRowDel (ArticleAttachmentID, ActionOn)
    SELECT i.ArticleAttachmentID, GETDATE() FROM deleted i

END

GO

查询以获得输出

SELECT 
  CASE WHEN i.ArticleAttachmentID IS NULL THEN 'This is a delete' 
       WHEN  d.ArticleAttachmentID IS NULL THEN 'This is an insert' 
                                        ELSE 'This is an update' 
  END  as Action, 
  * 
FROM 
  TrackArticleAttachmentTbl i
FULL OUTER JOIN 
  TrackArticleAttachmentTblRowDel d
    ON i.ArticleAttachmentID = d.ArticleAttachmentID

输出：

This is an update   38  18226   2012-02-19 14:01:52 5   18226   2012-02-19 14:02:01
This is an update   22  18210   2012-02-15 16:38:39 4   18210   2012-02-15 16:39:29
This is an update   13  18201   2012-02-15 12:21:22 2   18201   2012-02-15 12:21:32
This is an update   47  18235   2012-02-19 16:37:54 6   18235   2012-02-19 17:09:53

查询以获取更新记录

SELECT *
FROM dbo.ArticleAttachment 
WHERE ArticleAttachmentID IN (18226,18210,18201,18235)

没有结果：（

Answer 1

CASE表达式无法正确检测删除。试试这个。

  CASE WHEN d.ArticleAttachmentID IS NOT NULL
       THEN 'This is a delete' 
       ELSE 'This is an insert or update' 
  END

从插入和删除中获取更新数据

1 个答案: