oracle系列练习题

CREATE TABLE STUDENT               
(SNO VARCHAR(3) NOT NULL,
   SNAME VARCHAR(4) NOT NULL,
   SSEX VARCHAR(2) NOT NULL,
   SBIRTHDAY DATE,
   CLASS VARCHAR(5))

INSERT INTO STUDENT (SNO,SNAME,SSEX,SBIRTHDAY,CLASS) VALUES (108 ,‘曾华‘ ,‘男‘ ,TO_DATE(‘2011-2-24‘,‘YYYY-MM-DD‘),95033);
INSERT INTO STUDENT (SNO,SNAME,SSEX,SBIRTHDAY,CLASS) VALUES (105 ,‘匡明‘ ,‘男‘ ,TO_DATE(‘1975-10-02‘,‘YYYY-MM-DD‘),95031);
INSERT INTO STUDENT (SNO,SNAME,SSEX,SBIRTHDAY,CLASS) VALUES (107 ,‘王丽‘ ,‘女‘ ,TO_DATE(‘1976-01-23‘,‘YYYY-MM-DD‘),95033);
INSERT INTO STUDENT (SNO,SNAME,SSEX,SBIRTHDAY,CLASS) VALUES (101 ,‘李军‘ ,‘男‘ ,TO_DATE(‘1976-02-20‘,‘YYYY-MM-DD‘),95033);
INSERT INTO STUDENT (SNO,SNAME,SSEX,SBIRTHDAY,CLASS) VALUES (109 ,‘王芳‘ ,‘女‘ ,TO_DATE(‘1976-02-20‘,‘YYYY-MM-DD‘),95031);
INSERT INTO STUDENT (SNO,SNAME,SSEX,SBIRTHDAY,CLASS) VALUES (103 ,‘陆君‘ ,‘男‘ ,TO_DATE(‘1974-06-03‘,‘YYYY-MM-DD‘),95031);

CREATE TABLE COURSE                
(CNO VARCHAR(5) NOT NULL,
   CNAME VARCHAR(10) NOT NULL,
   TNO VARCHAR(10) NOT NULL)

INSERT INTO COURSE(CNO,CNAME,TNO)VALUES (‘3-105‘ ,‘计算机导论‘,825);
INSERT INTO COURSE(CNO,CNAME,TNO)VALUES (‘3-245‘ ,‘操作系统‘ ,804);
INSERT INTO COURSE(CNO,CNAME,TNO)VALUES (‘6-166‘ ,‘数据电路‘ ,856);
INSERT INTO COURSE(CNO,CNAME,TNO)VALUES (‘9-888‘ ,‘高等数学‘ ,100);

CREATE TABLE SCORE              
(SNO VARCHAR(3) NOT NULL,
   CNO VARCHAR(5) NOT NULL,
   DEGREE NUMERIC(10, 1) NOT NULL)


INSERT INTO SCORE(SNO,CNO,DEGREE)VALUES (103,‘3-245‘,86);
INSERT INTO SCORE(SNO,CNO,DEGREE)VALUES (105,‘3-245‘,75);
INSERT INTO SCORE(SNO,CNO,DEGREE)VALUES (109,‘3-245‘,68);
INSERT INTO SCORE(SNO,CNO,DEGREE)VALUES (103,‘3-105‘,92);
INSERT INTO SCORE(SNO,CNO,DEGREE)VALUES (105,‘3-105‘,88);
INSERT INTO SCORE(SNO,CNO,DEGREE)VALUES (109,‘3-105‘,76);
INSERT INTO SCORE(SNO,CNO,DEGREE)VALUES (101,‘3-105‘,64);
INSERT INTO SCORE(SNO,CNO,DEGREE)VALUES (107,‘3-105‘,91);
INSERT INTO SCORE(SNO,CNO,DEGREE)VALUES (108,‘3-105‘,78);
INSERT INTO SCORE(SNO,CNO,DEGREE)VALUES (101,‘6-166‘,85);
INSERT INTO SCORE(SNO,CNO,DEGREE)VALUES (107,‘6-106‘,79);
INSERT INTO SCORE(SNO,CNO,DEGREE)VALUES (108,‘6-166‘,81);

CREATE TABLE TEACHER             
(TNO VARCHAR(3) NOT NULL,
   TNAME VARCHAR(4) NOT NULL, TSEX VARCHAR(2) NOT NULL,
   TBIRTHDAY DATE NOT NULL, PROF VARCHAR(6),
   DEPART VARCHAR(10) NOT NULL)


INSERT INTO TEACHER(TNO,TNAME,TSEX,TBIRTHDAY,PROF,DEPART)
VALUES (804,‘李诚‘,‘男‘,TO_DATE(‘1977-08-14‘,‘YYYY-MM-DD‘),‘副教授‘,‘计算机系‘);
INSERT INTO TEACHER(TNO,TNAME,TSEX,TBIRTHDAY,PROF,DEPART)
VALUES (856,‘张旭‘,‘男‘,TO_DATE(‘1969-03-12‘,‘YYYY-MM-DD‘),‘讲师‘,‘电子工程系‘);
INSERT INTO TEACHER(TNO,TNAME,TSEX,TBIRTHDAY,PROF,DEPART)
VALUES (825,‘王萍‘,‘女‘,TO_DATE(‘1972-05-05‘,‘YYYY-MM-DD‘),‘助教‘,‘计算机系‘);
INSERT INTO TEACHER(TNO,TNAME,TSEX,TBIRTHDAY,PROF,DEPART)
VALUES (831,‘刘冰‘,‘女‘,TO_DATE(‘1977-08-14‘,‘YYYY-MM-DD‘),‘助教‘,‘电子工程系‘);

--查询Student表中的所有记录的Sname、Ssex和Class列。
select sname,ssex,class from student;
--查询教师所有的单位即不重复的Depart列。
select * from teacher;
select distinct depart from teacher;
--查询Student表的所有记录。
select * from student;
--查询Score表中成绩在60到80之间的所有记录。
select * from score;
INSERT INTO SCORE(SNO,CNO,DEGREE)VALUES (103,‘3-245‘,60);
--包括两端的60和80用between and
select * from score where degree between 60 and 80;
--不包括两端的数用比较操作符
select * from score where degree>60 and degree<80;
--查询Score表中成绩为85，86或88的记录。
select * from score where degree in(85,86,88);
--查询Student表中“95031”班或性别为“女”的同学记录。
select * from student where class=‘95031‘ or ssex=‘女‘;
--以Class降序查询Student表的所有记录。
select * from student order by class desc;
--以Cno升序、Degree降序查询Score表的所有记录。
select * from score order by cno asc,degree desc;
--查询“95031”班的学生人数。
select count(*) from student where class=‘95031‘;
--查询Score表中的最高分的学生学号和课程号。
select sno,cno from(
  select * from score order by degree desc
) where rownum=1;


--2019年7月2日
--查询‘3-105’号课程的平均分。
select avg(degree) from score where cno=‘3-105‘;
--查询Score表中至少有5名学生选修的并以3开头的课程的平均分数。
select cno,avg(degree) from score group by cno having cno like ‘3%‘ and count(*)>5;
--查询最低分大于70，最高分小于90的Sno列。
select sno from score group by sno having min(degree)>70 and max(degree)<90;
--查询所有学生的Sname、Cno和Degree列。
select sname,cno,degree from student st join score sc on st.sno = sc.sno;
--查询所有学生的Sno、Cname和Degree列。
select sno,cname,degree from score sc join course co on sc.cno = co.cno;
--查询所有学生的Sname、Cname和Degree列。
select sname,cname,degree from score sc join course co on sc.cno = co.cno join student st on st.sno = sc.sno;
--查询“95033”班所选课程的平均分。
select avg(degree) from score join student on score.sno = student.sno where class=‘95033‘;
--假设使用如下命令建立了一个grade表：
create table grade(low   number(3,0),upp   number(3),rank   char(1));
insert into grade values(90,100,‘A‘);
insert into grade values(80,89,‘B‘);
insert into grade values(70,79,‘C‘);
insert into grade values(60,69,‘D‘);
insert into grade values(0,59,‘E‘);
commit;
--现查询所有同学的Sno、Cno和rank列。
select sno,cno,rank from grade join score on score.degree between low and upp;
select sno,cno,rank from grade,score where score.degree between low and upp;
--查询选修“3-105”课程的成绩高于“109”号同学成绩的所有同学的记录。
select distinct * from student join score on score.degree>(select distinct degree from score where sno=109 and cno=‘3-105‘) and cno=‘3-105‘ and score.sno=student.sno order by degree asc;
select distinct * from student,score where score.cno=‘3-105‘ and score.degree>(select distinct degree from score where sno=‘109‘ and cno=‘3-105‘) and student.sno = score.sno;
--查询score中选学一门以上课程的同学中分数为非最高分成绩的记录。
select * from score a where degree<(select max(degree) from score where sno in(select sno from score b group by sno having count(cno)>1)) and sno in(select sno from score b group by sno having count(cno)>1);

select * from student;
select * from score;
select * from course;
select * from teacher;

--2019年7月3日
--查询和学号为108的同学同年出生的所有学生的Sno、Sname和Sbirthday列。
select sno,sname,sbirthday from student where to_char(sbirthday,‘YYYY‘)=(select distinct to_char(sbirthday,‘YYYY‘) from student where sno=‘108‘);
--查询“张旭“教师任课的学生成绩。
select distinct * from score where cno in(select distinct cno from course where tno in(select tno from teacher where tname=‘张旭‘));
--查询选修某课程的同学人数多于5人的教师姓名。
select t1.tno,tname,cno,cname from teacher t1 join course t2 on t1.tno = t2.tno
where cno in(select cno from score group by cno having count(sno)>5);
select distinct tname from teacher where tno in(select distinct tno from course where cno in(select cno from score group by cno having count(sno)>5));
--查询95033班和95031班全体学生的记录。
select * from student where class=‘95033‘ or class=‘95031‘;
--查询存在有85分以上成绩的课程Cno.
select cno from score sc group by cno having max(degree)>85;
select distinct cno from score where degree>85;
--查询出“计算机系“教师所教课程的成绩表。
select degree from teacher t1 join course t2 on t1.tno=t2.tno join score t3 on t3.cno=t2.cno where depart=‘计算机系‘;
select * from score where cno in(select distinct cno from course where tno in(select distinct tno from teacher where depart=‘计算机系‘));
--查询“计算机系”与“电子工程系“不同职称的教师的Tname和Prof。
select * from teacher;
select * from teacher where depart=‘计算机系‘ or depart=‘电子工程系‘;
select tname,prof from teacher where depart in(‘计算机系‘,‘电子工程系‘) and prof not in(select prof from teacher group by prof having count(*)>1);
select tname,prof from teacher where select * from teacher where depart=‘计算机系‘ or depart=‘电子工程系‘;
--查询选修编号为“3-105“课程且成绩至少高于选修编号为“3-245”的同学的Cno、Sno和Degree,并按Degree从高到低次序排序。
select cno,sno,degree from score where cno=‘3-105‘ and degree>(select min(degree) from score where cno=‘3-245‘) order by degree desc;
select * from score where cno=‘3-105‘ and degree>any(select degree from score where cno=‘3-245‘) order by degree desc;
--查询选修编号为“3-105”且成绩高于选修编号为“3-245”课程的同学的Cno、Sno和Degree.
select cno,sno,degree from score where cno=‘3-105‘ and degree>(select max(degree) from score where cno=‘3-245‘);


--作业704
--查询所有教师和同学的name、sex和birthday.
select tname "姓名",tsex "性别",tbirthday "生日" from teacher union select sname,ssex,sbirthday from student;
--查询所有“女”教师和“女”同学的name、sex和birthday.
select tname "姓名",tsex "性别",tbirthday "生日" from teacher where tsex=‘女‘ union select sname,ssex,sbirthday from student where ssex=‘女‘;
--查询成绩比该课程平均成绩低的同学的成绩表。
select * from score t1 where cno in(select cno from score group by cno) and degree<(select avg(degree) from score t2 group by cno having t1.cno=t2.cno);
--查询所有任课教师的Tname和Depart.
select tname,depart from teacher where tno in(select tno from course);
--查询所有未讲课的教师的Tname和Depart.
select tname,depart from teacher where tno not in(select tno from course);
--查询至少有2名男生的班号。
select class from student where ssex=‘男‘ group by class having count(*)>=2;
--查询Student表中不姓“王”的同学记录。
select * from student where sname not in(select sname from student where sname like ‘王%‘);
--查询Student表中每个学生的姓名和年龄。
select sname,round(months_between(sysdate,sbirthday)/12) from student;
--查询Student表中最大和最小的Sbirthday日期值。
select max(sbirthday),min(sbirthday) from student;
--以班号和年龄从大到小的顺序查询Student表中的全部记录。
select * from student order by class,sbirthday desc;
--查询“男”教师及其所上的课程。
select t1.tname,t2.cname from teacher t1 join course t2 on t1.tno=t2.tno and t1.tsex=‘男‘;
--查询最高分同学的Sno、Cno和Degree列。
select sno,cno,degree from score t1 where degree in(select max(degree) from score t2 group by cno);
--查询和“李军”同性别的所有同学的Sname.
select sname from student where ssex in(select ssex from student where sname=‘李军‘);
--查询和“李军”同性别并同班的同学Sname.
select * from student;
select sname from student where ssex in(select ssex from student where sname=‘李军‘) and class in(select class from student where sname=‘李军‘);
--查询所有选修“计算机导论”课程的“男”同学的成绩表
select * from score where sno in(select sno from student where ssex=‘男‘) and cno in(select cno from course where cname=‘计算机导论‘);