关于view的触发器的例子

关于view的触发器的例子

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-- 技术教程 (http://www.webasp.net/article/)
--- 关于view的触发器的例子 (http://www.webasp.net/article/13/12427.htm)

-- 作者：未知
-- 发布日期： 2004-08-19

/*create table UserTable
(
UserId uniqueidentifier NOT NULL ROWGUIDCOL, -- 唯一标识
Name nvarchar(60) NULL, -- 名

age int NULL DEFAULT 0 check(age>20) ,-- 年龄

address nvarchar(25) NULL --地址
)*/
go

create table LogTable1
(
name nvarchar(60) null,
age int
)
go
create table LogTable2
(
name nvarchar(60) null,
age int
)

go
insert LogTable1 values ( 't11',30)

insert LogTable1 values ( 't12',40)

insert LogTable1 values ( 't13',50)

insert LogTable2 values ( 't21',130)

insert LogTable2 values ( 't22',140)

insert LogTable2 values ( 't23',150)
insert LogTable2 values ( 't24',160)

select * into logAll from logtable1 union select * from logtable2

go
--create view
Create view logView
as
select * from logtable1 union select * from logtable2

--create trigger of delete in view
create trigger logView_delete on logView instead of delete
as
begin
delete logAll where name in (select name from deleted)
end
go

--create trigger of insert in view
create trigger logView_insert on logView instead of insert
as
begin
insert logAll select * from inserted
end
go

--create trigger of update in view
create trigger logView_update on logView instead of update
as
begin
set nocount off
if not exists(select * from inserted) return

declare @name varchar(20)
declare @oldname varchar(20)
declare @age int

select @name = name,@age=age from inserted
select @oldname=name from deleted

update logtable1 set name=@name,age=@age where name=@oldname
update logtable2 set name=@name,age=@age where name=@oldname
/*

if @namer is null and @age is null
begin
raiserror ( 1074008065, 16, 127 ) with nowait, seterror
return
end

if(UPDATE(name))-
begin
EXEC p_GetName
end
*/

end

--test
delete logview where name='t11'

insert logview values('v1',100)

update logView set name='t1212',age=10000 where name='t12'

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