1.create view test6_01 as select sid,name,dname from pub.student where age<20 and dname='物理學院'order by sid
select * from test6_01
2.create view test6_02(sid,name,sum_score)
as (select pub.student.sid,name,sum(score)
from pub.student,pub.student_course
where pub.student.sid=pub.student_course.sid
and dname='軟體學院'
and class=2009
group by pub.student.sid,name)
select * from test6_02
3.create view test6_03 as(
select pub.student.sid,pub.student.name,score
from pub.student,pub.student_course,pub.course
where pub.student.sid=pub.student_course.sid
and pub.student_course.cid=pub.course.cid
and class=2010
and dname='電腦科學與技術學院'
and pub.course.name='作業系統')
select * fromm test6_03
4.create view test6_04 as
(select pub.student.sid,pub.student.name
from pub.student_course,pub.student,pub.course
where pub.student_course.sid=pub.student.sid
and pub.student_course.cid=pub.course.cid
and pub.course.name ='資料庫系統'
and score>90)
select * from test6_04
5.create view test6_05 as
(select pub.student.sid,pub.student_course.cid,pub.course.name,score
from pub.student,pub.student_course,pub.course
where pub.student_course.sid=pub.student.sid
and pub.student_course.cid=pub.course.cid
and pub.student.name='李龍'
)6.create view test6_06 as(
select pub.student.sid,name
from pub.student
where not exists(
(select cid
from pub.course)
minus(
select cid
from pub.student_course
where pub.student_course.sid=pub.student.sid)))
7.create view test6_07 as
(select sid,name
from pub.student
where sid in(
select sid
from pub.student_course
where score>=60)
and not exists((
select cid
from pub.course)
minus(select cid
from pub.student_course)))
create view test6_07 as
(select sid,name
from test6_06 where sid in
(select distinct sid
from pub.student_course
where sid in(select sid
from test6_06) and score>60))//不知道前兩個尤其是第二個為什麼不行，第二個有15行資料錯誤，下面的才是正確答案
create view test6_07 as
select * from test6_06 where sid not in (
select distinct sid from pub.student_course where sid in(select sid from test6_06) and score<60)
8.create view test6_08 as
(select cid,name
from pub.course
where fcid in(
select cid
from pub.course
where credit=2))
9.create view test6_09(sid,name,sum_credit)as
(select pub.student.sid,pub.student.name,sum(credit)
from pub.student,pub.student_course,pub.course
where pub.student_course.sid=pub.student.sid
and pub.student_course.cid=pub.course.cid
and class=2010
and dname='化學與化工學院'
and score>=60
group by pub.student.sid,pub.student.name)
10.create view test6_10 as
(select cid,name
from pub.course
where fcid in(select cid
from pub.course
where fcid is not null))
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