SQL SERVER 训练题(1)创建Studentinformation库

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我是靠谱客的博主光亮玫瑰，最近开发中收集的这篇文章主要介绍SQL SERVER 训练题(1)创建Studentinformation库，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

创建Studentinformation库

–创建数据库
if exists (select * from sysdatabases where name =‘Studentinformation’)
drop database Studentinformation
go
create database Studentinformation
go

使用Studentinformation数据库

use Studentinformation
go
–创建学生表
if exists (select *from sysobjects where name=‘students’ )
drop table students
CREATE TABLE students
(sno VARCHAR(3) NOT NULL,
sname VARCHAR(4) NOT NULL,
ssex VARCHAR(2) NOT NULL,
sbirthday DATETIME,
class VARCHAR(5))
go
–创建课程表
if exists (select *from sysobjects where name=‘courses’ )
drop table courses
CREATE TABLE courses
(cno VARCHAR(5) NOT NULL,
cname VARCHAR(10) NOT NULL,
tno VARCHAR(10) NOT NULL)
go
–创建成绩表
if exists (select *from sysobjects where name=‘scores’ )
drop table scores
CREATE TABLE scores
(sno VARCHAR(3) NOT NULL,
cno VARCHAR(5) NOT NULL,
degree NUMERIC(10, 1) NOT NULL)
go

–创建教师表
if exists (select *from sysobjects where name=‘teachers’ )
drop table teachers
CREATE TABLE teachers
(tno VARCHAR(3) NOT NULL,
tname VARCHAR(4) NOT NULL, tsex VARCHAR(2) NOT NULL,
tbirthday DATETIME NOT NULL, prof VARCHAR(6),
depart VARCHAR(10) NOT NULL)
go

–添加数据
INSERT INTO STUDENTS (SNO,SNAME,SSEX,SBIRTHDAY,CLASS) VALUES (108 ,‘曾华’ ,‘男’ ,‘1977-09-01’,95033)
INSERT INTO STUDENTS (SNO,SNAME,SSEX,SBIRTHDAY,CLASS) VALUES (105 ,‘匡明’ ,‘男’ ,‘1975-10-02’,95031)
INSERT INTO STUDENTS (SNO,SNAME,SSEX,SBIRTHDAY,CLASS) VALUES (107 ,‘王丽’ ,‘女’ ,‘1976-01-23’,95033)
INSERT INTO STUDENTS (SNO,SNAME,SSEX,SBIRTHDAY,CLASS) VALUES (101 ,‘李军’ ,‘男’ ,‘1976-02-20’,95033)
INSERT INTO STUDENTS (SNO,SNAME,SSEX,SBIRTHDAY,CLASS) VALUES (109 ,‘王芳’ ,‘女’ ,‘1975-02-10’,95031)
INSERT INTO STUDENTS (SNO,SNAME,SSEX,SBIRTHDAY,CLASS) VALUES (103 ,‘陆君’ ,‘男’ ,‘1974-06-03’,95031)

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

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

INSERT INTO TEACHERS(TNO,TNAME,TSEX,TBIRTHDAY,PROF,DEPART) VALUES (804,‘李诚’,‘男’,‘1958-12-02’,‘副教授’,‘计算机系’)
INSERT INTO TEACHERS(TNO,TNAME,TSEX,TBIRTHDAY,PROF,DEPART) VALUES (856,‘张旭’,‘男’,‘1969-03-12’,‘讲师’,‘电子工程系’)
INSERT INTO TEACHERS(TNO,TNAME,TSEX,TBIRTHDAY,PROF,DEPART) VALUES (825,‘王萍’,‘女’,‘1972-05-05’,‘助教’,‘计算机系’)
INSERT INTO TEACHERS(TNO,TNAME,TSEX,TBIRTHDAY,PROF,DEPART) VALUES (831,‘刘冰’,‘女’,‘1977-08-14’,‘助教’,‘电子工程系’)

题目

–1、查询Student表中的所有记录的Sname、Ssex和Class列
–2、查询教师所有的单位即不重复的Depart列
–3、查询Student表的所有记录
–4、查询Score表中成绩在60到80之间的所有记录
–5、查询Score表中成绩为85，86或88的记录
–6、查询Student表中“95031”班或性别为“女”的同学记录。
–7、以Class降序查询Student表的所有记录。
–8、以Cno升序、Degree降序查询Score表的所有记录
–9、查询“95031”班的学生人数
–10、查询Score表中的最高分的学生学号和课程号
–11、查询‘3-105’号课程的平均分
–12、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
–13、查询最低分大于70，最高分小于90的Sno列。
–14、查询所有学生的Sname、Cno和Degree列
–15、查询所有学生的Sno、Cname和Degree列
–16、查询所有学生的Sname、Cname和Degree列
–17、查询“95033”班所选课程的平均分
–18、假设使用如下命令建立了一个grade表：
CREATE TABLE grade(low TINYINT,upp TINYINT,rank CHAR(1))
go
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’)
–现查询所有同学的Sno、Cno和rank列

–19、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
–20、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
–21、查询成绩高于学号为“109”、课程号为“3-105”的成绩的所有记录
–22、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。
–23、查询“张旭“教师任课的学生成绩。
–24、查询选修某课程的同学人数多于5人的教师姓名
–25、查询95033班和95031班全体学生的记录
–26、查询存在有85分以上成绩的课程Cno
–27、查询出“计算机系“教师所教课程的成绩表
–28、查询“计算机系”与“电子工程系“不同职称的教师的Tname和Prof
–29、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
–30、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
–31、查询所有教师和同学的name、sex和birthday.
–32、查询所有“女”教师和“女”同学的name、sex和birthday.
–33、查询成绩比该课程平均成绩低的同学的成绩表。
–34、查询所有任课教师的Tname和Depart.
–35 查询所有未讲课的教师的Tname和Depart.
–36、查询至少有2名男生的班号
–37、查询Student表中不姓“王”的同学记录
–38、查询Student表中每个学生的姓名和年龄
–39、查询Student表中最大和最小的Sbirthday日期值
–40、以班号和年龄从大到小的顺序查询Student表中的全部记录
–41、查询“男”教师及其所上的课程
–42、查询最高分同学的Sno、Cno和Degree列
–43、查询和“李军”同性别的所有同学的Sname.
–44、查询和“李军”同性别并同班的同学Sname.
–45、查询所有选修“计算机导论”课程的“男”同学的成绩表

答案：

–1、查询Student表中的所有记录的Sname、Ssex和Class列
select Sname,Ssex,Class from students
–2、查询教师所有的单位即不重复的Depart列
select distinct depart from Teachers
–3、查询Student表的所有记录
select *from Students
–4、查询Score表中成绩在60到80之间的所有记录
select *from Scores where degree between 60 and 80
–5、查询Score表中成绩为85，86或88的记录
select *from Scores where degree in (85,86,88)
–6、查询Student表中“95031”班或性别为“女”的同学记录。
select * from Students where class =‘95031’ or ssex =‘女’
–7、以Class降序查询Student表的所有记录。
select from Students order by class desc
–8、以Cno升序、Degree降序查询Score表的所有记录
select from Scores order by Cno asc ,degree desc
–9、查询“95031”班的学生人数
select count() from Students WHERE CLASS =‘95031’
–10、查询Score表中的最高分的学生学号和课程号
select top 1 b.sno,b.cno from scores b order by b.degree desc
–11、查询‘3-105’号课程的平均分
select AVG(degree) 平均分 from scores where cno=‘3-105’
–12、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 Scores where cno like '3%'group by cno having COUNT()>5
–13、查询最低分大于70，最高分小于90的Sno列。
select sno from scores group by sno having MAX(degree)<90 and MIN(degree)>70
–14、查询所有学生的Sname、Cno和Degree列
select b.sno,b.sname,a.degree from scores a , students b where a.sno=b.sno
–15、查询所有学生的Sno、Cname和Degree列
select b.sno,c.cname,degree from scores a , students b,courses c where a.sno=b.sno and a.cno=c.cno
–16、查询所有学生的Sname、Cname和Degree列
select b.sname,c.cname,degree from scores a , students b,courses c where a.sno=b.sno and a.cno=c.cno

–17、查询“95033”班所选课程的平均分
select Cno ,AVG(degree) from students a ,scores b where a.sno=b.sno and a.class=‘95033’ group by cno

–18、假设使用如下命令建立了一个grade表：
CREATE TABLE grade(low TINYINT,upp TINYINT,rank CHAR(1))
go
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’)

–现查询所有同学的Sno、Cno和rank列
select Sno,cno,rank from scores a, grade b where a.degree>b.low and a.degree<b.upp

–19、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 *from scores a ,(select from scores where cno=‘3-105’ and sno =‘109’) b where a.cno=b.cno and a.degree>b.degree
–20、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 a.sno,cno,maxdegree from scores a,(Select SNO,MAX(degree)maxdegree from scores group by sno having COUNT()>1) b
where a.sno=b.sno and a.degree<b.maxdegree
–21、查询成绩高于学号为“109”、课程号为“3-105”的成绩的所有记录

select * from scores a ,(select *from scores where sno=‘109’ and cno =‘3-105’)b
where a.cno=b.cno and a.degree>b.degree

–22、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 students a,(select YEAR(Sbirthday)birth from students where sno=‘108’) b where YEAR (a.sbirthday)=b.birth
–23、查询“张旭“教师任课的学生成绩。
select *from scores where cno =(select Cno from courses where tno =(select Tno from teachers where tname=‘张旭’))
–24、查询选修某课程的同学人数多于5人的教师姓名
select tname from teachers where tno =(select Tno from courses where cno=(select cno from scores group by cno having COUNT(sno)>5))
–25、查询95033班和95031班全体学生的记录
select *from students where class in(95033,95031)
–26、查询存在有85分以上成绩的课程Cno
select distinct cno from scores where degree>85
–27、查询出“计算机系“教师所教课程的成绩表
select *from scores where cno in (select Cno from courses where tno in(select tno from teachers where depart =‘计算机系’))
–28、查询“计算机系”与“电子工程系“不同职称的教师的Tname和Prof
SELECT Tname,Prof FROM Teachers WHERE Depart=‘计算机系’ AND Prof NOT IN(
SELECT DISTINCT Prof
FROM Teachers
WHERE Depart=‘电子工程系’)

–29、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 Scores
WHERE Cno=‘3-105’ AND Degree > ANY(
SELECT Degree
FROM Scores
WHERE Cno=‘3-245’)
ORDER BY Degree DESC

–30、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 scores where cno =‘3-105’ and degree> all(select degree from scores where cno =‘3-245’)
–31、查询所有教师和同学的name、sex和birthday.
select a.sname,a.ssex,CONVERT( varchar(4),MONTH(a.sbirthday))+’-’+CONVERT(varchar(4),DAY(a.sbirthday)) from students a
union
select B.tname,b.tsex,CONVERT( varchar(4),MONTH(B.tbirthday))+’-’+CONVERT(varchar(4),DAY(B.tbirthday)) from teachers b

–32、查询所有“女”教师和“女”同学的name、sex和birthday.
select a.sname,a.ssex,CONVERT( varchar(4),MONTH(a.sbirthday))+’-’+CONVERT(varchar(4),DAY(a.sbirthday)) from students a where a.ssex=‘女’
union
select B.tname,b.tsex,CONVERT( varchar(4),MONTH(B.tbirthday))+’-’+CONVERT(varchar(4),DAY(B.tbirthday)) from teachers b where b.tname=‘女’
–33、查询成绩比该课程平均成绩低的同学的成绩表。
select *from scores a ,(select cno,AVG(degree)avgs from scores group by cno )b where a.cno=b.cno and a.degree<b.avgs
–34、查询所有任课教师的Tname和Depart.
select * from teachers where tno in(select Tno from courses where cno in(select cno from scores ))
–35 查询所有未讲课的教师的Tname和Depart.
select * from teachers where tno not in(select Tno from courses where cno in(select cno from scores ))
–36、查询至少有2名男生的班号
select class from Students where ssex=‘男’ group by class having COUNT(sno)>=2
–37、查询Student表中不姓“王”的同学记录
select *from Students where sname not like ‘王%’
–38、查询Student表中每个学生的姓名和年龄
select sno,DATEDIFF(YEAR,sbirthday,GETDATE()) 年龄 from students
–39、查询Student表中最大和最小的Sbirthday日期值
select MAX(sbirthday)最大值,MIN(sbirthday)最小值 from students
–40、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 students order by class, datediff(YEAR,sbirthday,GETDATE())desc
–41、查询“男”教师及其所上的课程
select * from courses where tno in (select tno from teachers where tsex=‘男’)
–42、查询最高分同学的Sno、Cno和Degree列
select Sno,Cno ,Degree from scores where sno =(select top 1 sno from scores order by degree)
–43、查询和“李军”同性别的所有同学的Sname.
select *from students where ssex = (select ssex from students where sname=‘李军’)
–44、查询和“李军”同性别并同班的同学Sname.
select *from students a,(select ssex,class from students where sname=‘李军’)b where a.ssex =b.ssex and a.class=b.class
–45、查询所有选修“计算机导论”课程的“男”同学的成绩表
select *from scores where cno= ( select cno from courses where cname=‘计算机导论’)