2018-01-19Sql Server-视图，事务

Posted 2020-10-21 Int

----视图增删改操作不影响基础表
----视图不允许出现重复列

create view haha--创建视图
as
select  student.*,Score.Cno,Score.Degree from student,score where student.Sno=Score.Sno
 
select * from haha

----事务
begin tran
insert into users values(‘赵四‘,‘c002‘)
insert into users values(‘赵五‘,‘c001‘)

if @@error>0
begin 
    rollback tran;
end
begin
    commit tran;
end

select * from users;