学生表sid,sname,结果表cid,cname,学生成绩表sid,cid,cscore,最高要求的分数输出候补课程专门命名

--1、建表SQL:

--学生表：

-- Createtable

createtable STUDENT

(

SID  
NUMBERnotnull,

SNAME
NVARCHAR2)

)

tablespace CABLESCD

storage

(

maxextentsunlimited

);

--成绩表

-- Createtable

createtable SCORE

(

CID  
NUMBERnotnull,

CNAME
NVARCHAR2)
notnull

)

tablespace CABLESCD

storage

(

maxextentsunlimited

);

--学生成绩表

-- Createtable

createtableSTUDENGSCORE

(

SID   
NUMBERnotnull,

CID   
NUMBERnotnull,

CSCORE
NUMBER)

)

tablespace CABLESCD

storage

(

maxextentsunlimited

);

--2、插入SQL语句：

insert into student

(sid, sname)

values

(001,'ZHAOHY');

insert into student

(sid, sname)

values

(002, 'ZHANGQL');

insert into student

(sid, sname)

values

(003, 'ZHAOHB');

insert into score

(cid, cname)

values

(100, '数电');

insert into score

(cid, cname)

values

(200, '模电');

insert into score

(cid, cname)

values

(300, '英语');

insert into score

(cid, cname)

values

(400, '政治');

select * from score

(001, 100, '60');

insert into studengscore

(sid, cid, cscore)

values

(002, 100, '70');

insert into studengscore

(sid, cid, cscore)

values

(003, 100, '80');

insert into studengscore

(sid, cid, cscore)

values

(003, 200, '90');

insert into studengscore

(sid, cid, cscore)

values

(003, 300, '99');

insert into studengscore

(sid, cid, cscore)

values

(003, 400, '98');

select * from studengscore

--3、查询SQL

select *
fromstudengscore;

select *
from student;

select *
from score;

select cnamefrom score
where cid =(select cid
fromstudengscore
wherecscore=(

selectmax(cscore)
fromstudengscore
));

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