Question

我创建了一个表tblAddress，我想使用一个触发器。当我INSERT/DELETE或UPDATE时，这些更改应保存在另一个表中 - 在锁定表中。我是SQL Server的初学者，能帮助我解决这个问题吗？

我刚做了这么多。我想要存储触发器信息的另一个表名为tr_Lock。

Create Trigger tr_tblAddress_ForInsertDeleteUpdate
On tblAddress
After Insert,Delete,Update
As
    Print 'You Deleted, Inserted, Updated one row from tblAddress';

Answer 1

这是您案例的样本数据

    CREATE TABLE BILL (BILL_NBR INT IDENTITY PRIMARY KEY, BILL_NME VARCHAR(50),CREATE_DTE DATETIME, MODIFY_DTE DATETIME)
    GO
    CREATE TABLE LOG_BILL (LOG_BILL_NBR INT IDENTITY PRIMARY KEY, LOG_DTE DATETIME, BILL_NBR INT, BILL_NME VARCHAR(50)
    ,CREATE_DTE DATETIME, MODIFY_DTE DATETIME)
    GO
    CREATE TRIGGER [dbo].[TRG_BILL_LOG] ON [dbo].BILL 

    AFTER UPDATE,DELETE
    AS

    INSERT INTO LOG_BILL (LOG_DTE,BILL_NBR,BILL_NME,CREATE_DTE,MODIFY_DTE)
    SELECT I.MODIFY_DTE, D.BILL_NBR, D.BILL_NME, D.CREATE_DTE, D.MODIFY_DTE  FROM DELETED D
    LEFT JOIN INSERTED I ON D.BILL_NBR = I.BILL_NBR

    GO

    INSERT INTO BILL
    SELECT 'A',GETDATE(), GETDATE()
    GO
    UPDATE BILL SET BILL_NME='B' WHERE BILL_NBR=1
    GO
    SELECT * FROM LOG_BILL

Answer 2

每个语句触发一次，而不是每行一次。触发器可以访问插入的，已删除的表，您可以根据自己的要求使用这些表。

插入后可以访问新插入的行，删除后可以访问已删除的行，更新后可以访问已删除的行以及新更新的行。

请参阅下面的简单示例

create table triggertest
(
id int,
name char(1)
)

create table log
(
id int,
name char(1),
operationdone char(2),
loggedtime datetime
)

Alter trigger trg_test1
on triggertest
after insert,update,delete
as
begin

set nocount on

--insert updated rows
if exists(select 1 from inserted) and exists(select 1 from deleted)
begin

insert into log
select *,'U',getdate() from inserted
return

end


----insert new rows
if exists(select 1 from inserted)
begin
insert into log
select *,'I',getdate() from inserted
return
end

--insertd deleted rows
if exists(select 1 from deleted)
begin

insert into log
select *,'D',getdate() from deleted

return
end



end


insert into triggertest
select 1,'z'

update triggertest
set 
id=2 
where name='z'

delete from triggertest


select * from log
select * from triggertest



 id name operationdone  loggedtime
    1   z       I              2016-03-08 19:54:23.617
    2   z       U              2016-03-08 19:54:30.373
    2   z       U              2016-03-08 19:54:30.373
    2   z       D              2016-03-08 19:54:39.063
    2   z      D               2016-03-08 19:54:39.063

Answer 3

以下是设置触发器以便插入，更新和删除

的示例

Objetive-C

SQL Server触发器信息插入另一个表中

3 个答案: