drop
table athlete;
create
table athlete (
ano char(10) not
null
primary
key,
aname char(20),
a*** char(5),
ateam char(16)
);insert
into athlete values('1001','金賢重','男','大連');
insert
into athlete values('1002','李敏鎬','男','大連');
insert
into athlete values('1003','金鍾國','女','瀋陽');
insert
into athlete values('1007','司馬','男','吉林');
insert
into athlete values('1004','李白','女','吉林');
insert
into athlete values('1005','馬忠','女','火星');
insert
into athlete values('1008','司馬遷','男','瀋陽');
drop
table item;
create
table item(
ino char(10) not
null
primary
key,
iname char(20),
itime char(5),
iplace char(20)
);insert
into item values('1000','跳水',1000,'1');
insert
into item values('1001','跳高',1005,'2');
insert
into item values('1002','游泳',1010,'3');
insert
into item values('1003','籃球',1020,'4');
drop
table games;
create
table games(
ano char(10),
ino char(10),
score int,
constraint ai_pk primary
key(ano ,ino),
constraint ai_fk1 foreign
key(ano) references athlete(ano),
constraint ai_fk2 foreign
key(ino) references item(ino),
constraint ai_score check (score between 0
and10
or score is
null)
);insert
into games values('1001','1000',1);
insert
into games values('1003','1001',3);
insert
into games values('1004','1001',4);
insert
into games values('1002','1000',2);
insert
into games values('1002','1001',5);
insert
into games values('1002','1002',6);
insert
into games values('1002','1003',7);
insert
into games values('1003','1000',3);
insert
into games values('1003','1002',3);
insert
into games values('1003','1003',3);
drop
table athlete;
create
table athlete (
ano char(10) not
null
primary
key,
aname char(20),
a*** char(5),
ateam char(16)
);
create
view a as
select * from athlete
where ateam='大連';
create
user user1 identified by
123456;
grant
update(score) on games to user1;
select item.ino, iname, itime, iplace
from item, athlete, games
where item.ino = games.ino and athlete.ano = games.ano and athlete.ano = '1002'
order
by itime;
select games.ano, aname, a***, ateam
from athlete, games
where games.ano = athlete.ano and games.ino = '1000';
select ateam, count(ano)
from athlete
where a*** = '男'
group
by ateam;
select iname from item where iplace != '1';select athlete.ano from
(select count(*) as cou from item) temp,
athlete,
(select ano, count(*)
as cou2 from games group
by ano) temp2
where temp2.ano = athlete.ano and cou2 = cou;
select aname from
athlete,
(select ano, count(*) as cou from games group
by ano) temp2
where temp2.ano = athlete.ano and cou >= 3
and a*** = '女';
select aname, score
from games, athlete, item
where athlete.ano = games.ano and games.ino = item.ino and iname = '跳高';
select s.sno from
(select s.sno as sn, count(*) as cu from sc, s where sc.sno = s.sno group
by s.sno) t,
(select sno, count(*) as cu1 from sc
where cno != all(select cno from sc, s where sc.sno = s.sno and s.sno = '801')
group
by sno) t1,
(select
count(*) as cu2 from sc, s
where sc.sno = s.sno and s.sno = '801'
group
by s.sno) t2,
swhere
t.sn = s.sno
and(
(t1.sno = s.sno
andt.cu - t1.cu1 = t2.cu2)
ort.cu = t2.cu2);
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