我是 SQL 新手,有人可以帮我修复下面的触发器吗?
我有这 2 个表(评论和报价),我想更新评论表插入、更新和删除,从报价表中获取数据。如果更新成功,我想使用 ReviewId 和 ReviewDate 更新报价表。
我使用的是Azure提供的SQL服务器。
UserKey 和 Asin 是唯一值,因此我用它来链接这些表。
我将非常感谢任何帮助!
Review
table:
ReviewId | OfferId | Review | CustomerId | UserKey | Asin | ReviewDate
----------------------------------------------------------------------------------------
25224 null blah null 12354ddd 123456 11/24/2014
Offer
table:
OfferId | CustomerId | UserKey | Asin | ReviewId | ReviewDate | Status
---------------------------------------------------------------------------------------------
25224 55555 12354ddd 12345 null null Pending Review
这是我到目前为止所拥有的:
// this trigger works, is there any other way to simplify this?
CREATE TRIGGER dbo.InserUpdateReview
ON dbo.Review
FOR INSERT, UPDATE, DELETE
AS
IF( Select Review.OfferId from Review, Inserted Where Review.ReviewId = Inserted.ReviewId ) IS NULL
BEGIN
//Update Review table first, this update it is working
UPDATE a
SET a.OfferId = ( Select Top(1) b.OfferId From dbo.Offer b Where b.UserKey = a.UserKey AND b.ASIN= a.ASiN AND b.ReviewId IS NULL ),
a.CustomerId = ( Select Top(1) b.CustomerId From dbo.Offer b Where b.UserKey = a.UserKey AND b.ASIN= a.ASiN AND b.ReviewId IS NULL )
FROM dbo.Review a
INNER JOIN Inserted i
ON a.ReviewId=i.ReviewId AND a.OfferId IS NULL AND a.CustomerId IS NULL
//update Offer table here,
UPDATE Top(1) o
SET o.ReviewId = (Select r.ReviewId From dbo.Review r Where r.UserKey = o.UserKey AND r.ASIN= o.ASiN AND r.ReviewId = ins.ReviewId ),
o.ReviewDate = getDate()
FROM dbo.Offer o
INNER JOIN Inserted ins
ON o.UserKey = ins.UserKey AND o.ASIN = ins.ASIN AND o.ReviewId IS NULL
END