日期:2014-05-18  浏览次数:20332 次

触发器的问题..
比如一个论坛..
如果你回了一张贴,就得把那个主题的回贴数量+1,然后再把那个论坛总回贴数量+1..
我建立了两个触发器.
CREATE   TRIGGER   Post_Reply
ON   [post]
FOR   INSERT
AS
UPDATE   T   SET  
threadReplyCount   =   T.threadReplyCount   +   1           //把主题的回贴数量+1
FROM   Thread   AS   T   INNER   JOIN   Inserted   AS   I
ON   T.threadId   =   I.threadId

CREATE   TRIGGER   Add_Reply
ON   [post]
FOR   INSERT
AS
UPDATE   F   SET  
forumPostCount   =   F.forumPostCount   +   1   //这里把论坛的总回贴数量+1
FROM   forum   AS   F   INNER   JOIN   Inserted   AS   I   INNER   JOIN   thread   AS   T
ON   T.threadId   =   I.threadId   AND   T.forumId   =   F.forumId

第一个触发器创建成功了,但是第二个触发器的
ON   T.threadId   =   I.threadId   and   T.forumId   =   F.forumId
有错误...可是我看了半天,就是找不到问题,怎么回事呢?

出错信息:
Server:   Msg   170,   Level   15,   State   1,   Procedure   Add_Reply,   Line   8
第   8   行:   'forumId '   附近有语法错误。


------解决方案--------------------
FOR INSERT
AS
UPDATE F SET
forumPostCount = F.forumPostCount + 1
FROM forum AS F, Inserted AS I , thread AS T
where T.threadId = I.threadId AND T.forumId = F.forumId

改这样try

倒是没有看到过两个内连接连用的。O.o