SQL语句SQL Server 续续
1.选择数据库
use hermosadb;
2.创建视图
create view v_student
as
select sno,sname,ssex
from student;
3.在视图上创建视图
create view v_student_girl (sno,sname,ssex)
as
select sno,sname,ssex
from v_student
where ssex=2
with check option;
4.删除视图
drop view v_grade_avg;
5.创建视图，当有聚集函数时，视图名后要写出列名
create view v_grade_avg (sno,avg)
as
select sno,avg(scgrade)
from grade
group by sno
having avg(scgrade)>=60;
6.更新视图
update v_student_girl
set sname='huihui'
where sname='hui';
7.在视图中插入数据
insert into v_student_girl values(11,'xian');
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