Sqlserver示例--触发器
insert
create trigger tri_insert
on student
for insert
as
declare @student_idchar(10)
select @student_id=s.student_id from students
inner join insertedion s.student_id=i.student_id
if @student_id='0000000001'
begin
raiserror('不能插入1的学号!',16,8)
rollbacktran
end
go
update
create trigger tri_update
on student
for update
as
if update(student_id)
begin
raiserror('学号不能修改!',16,8)
rollbacktran
end
go
delete
create trigger tri_delete
on student
for delete
as
declare @student_idvarchar(10)
select @student_id=student_id from deleted
if @student_id='admin'
begin
raiserror('错误',16,8)
rollbacktran
end
查询触发器代码:exec sp_helptext 'fa_zc_delete'
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文章来源: https://blog.csdn.net/tianyustat/article/details/91791639