Question

我尝试创建一个触发器来更新不到三天的记录继承我的代码我执行表空白我认为错误是与dateadd函数有什么建议吗？

 ALTER TRIGGER update_marketinglistC
    ON marketing_list FOR UPDATE
    AS
    BEGIN

        SELECT * FROM INSERTED 
        SELECT * FROM DELETED

        Select * from inserted 
        where DateCreated <= DATEADD(dd,-3,CURRENT_TIMESTAMP)



    END

Answer 1

试试这个。

Alter Trigger update_marketinglistC
On marketing_list For Update
As

Begin

    If exists (Select * from inserted 
               Where DateCreated <= DATEADD(dd, -3, current_Timestamp))
    Begin
        Rollback Transaction
        Raiserror('Cannot update records more than three days old.', 16, 1)
    End

End

尝试创建一个触发器，仅允许更新记录不到三天的记录

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