数据库第二章 参考答案

1、

/*student表数据*/

insert into `student` (`studentNo`, `loginPwd`, `studentName`, `sex`, `gradeId`, `phone`, `address`, `bornDate`, `email`, `identityCard`) values(\'10000\',\'123\',\'郭靖\',\'男\',\'1\',\'13645667783\',\'天津市河西区\',\'1990-09-08 00:00:00\',NULL,NULL);
insert into `student` (`studentNo`, `loginPwd`, `studentName`, `sex`, `gradeId`, `phone`, `address`, `bornDate`, `email`, `identityCard`) values(\'10001\',\'123\',\'李文才\',\'男\',\'1\',\'13645667890\',\'地址不详\',\'1994-04-12 00:00:00\',NULL,NULL);
insert into `student` (`studentNo`, `loginPwd`, `studentName`, `sex`, `gradeId`, `phone`, `address`, `bornDate`, `email`, `identityCard`) values(\'10002\',\'123\',\'李斯文\',\'男\',\'1\',\'13645556793\',\'河南洛阳\',\'1993-07-23 00:00:00\',NULL,NULL);
insert into `student` (`studentNo`, `loginPwd`, `studentName`, `sex`, `gradeId`, `phone`, `address`, `bornDate`, `email`, `identityCard`) values(\'10003\',\'123\',\'张萍\',\'女\',\'1\',\'13642345112\',\'地址不详\',\'1995-06-10 00:00:00\',NULL,NULL);
insert into `student` (`studentNo`, `loginPwd`, `studentName`, `sex`, `gradeId`, `phone`, `address`, `bornDate`, `email`, `identityCard`) values(\'10004\',\'123\',\'韩秋洁\',\'女\',\'1\',\'13812344566\',\'北京市海淀区\',\'1995-07-15 00:00:00\',NULL,NULL);
insert into `student` (`studentNo`, `loginPwd`, `studentName`, `sex`, `gradeId`, `phone`, `address`, `bornDate`, `email`, `identityCard`) values(\'10005\',\'123\',\'张秋丽\',\'女\',\'1\',\'13567893246\',\'北京市东城区\',\'1994-01-17 00:00:00\',NULL,NULL);
insert into `student` (`studentNo`, `loginPwd`, `studentName`, `sex`, `gradeId`, `phone`, `address`, `bornDate`, `email`, `identityCard`) values(\'10006\',\'123\',\'肖梅\',\'女\',\'1\',\'13563456721\',\'河北省石家庄市\',\'1991-02-17 00:00:00\',NULL,NULL);
insert into `student` (`studentNo`, `loginPwd`, `studentName`, `sex`, `gradeId`, `phone`, `address`, `bornDate`, `email`, `identityCard`) values(\'10007\',\'123\',\'秦洋\',\'男\',\'1\',\'13056434411\',\'上海市卢湾区\',\'1992-04-18 00:00:00\',NULL,NULL);
insert into `student` (`studentNo`, `loginPwd`, `studentName`, `sex`, `gradeId`, `phone`, `address`, `bornDate`, `email`, `identityCard`) values(\'10008\',\'123\',\'何睛睛\',\'女\',\'1\',\'13053445221\',\'广州市天河区\',\'1997-07-23 00:00:00\',NULL,NULL);
insert into `student` (`studentNo`, `loginPwd`, `studentName`, `sex`, `gradeId`, `phone`, `address`, `bornDate`, `email`, `identityCard`) values(\'20000\',\'123\',\'王宝宝\',\'男\',\'2\',\'15076552323\',\'地址不详\',\'1996-06-05 00:00:00\',NULL,NULL);
insert into `student` (`studentNo`, `loginPwd`, `studentName`, `sex`, `gradeId`, `phone`, `address`, `bornDate`, `email`, `identityCard`) values(\'20010\',\'123\',\'何小华\',\'女\',\'2\',\'13318877954\',\'地址不详\',\'1995-09-10 00:00:00\',NULL,NULL);
insert into `student` (`studentNo`, `loginPwd`, `studentName`, `sex`, `gradeId`, `phone`, `address`, `bornDate`, `email`, `identityCard`) values(\'30011\',\'123\',\'陈志强\',\'男\',\'3\',\'13689965430\',\'地址不详\',\'1994-09-27 00:00:00\',NULL,NULL);
insert into `student` (`studentNo`, `loginPwd`, `studentName`, `sex`, `gradeId`, `phone`, `address`, `bornDate`, `email`, `identityCard`) values(\'30012\',\'123\',\'李露露\',\'女\',\'3\',\'13685678854\',\'地址不详\',\'1992-09-27 00:00:00\',NULL,NULL);

/*result表数据*/


insert into `result` (`studentNo`, `subjectNo`, `examDate`, `studentResult`) values(\'10000\',\'1\',\'2016-02-15 00:00:00\',\'71\');
insert into `result` (`studentNo`, `subjectNo`, `examDate`, `studentResult`) values(\'10000\',\'1\',\'2016-02-17 00:00:00\',\'60\');
insert into `result` (`studentNo`, `subjectNo`, `examDate`, `studentResult`) values(\'10001\',\'1\',\'2016-02-17 00:00:00\',\'46\');
insert into `result` (`studentNo`, `subjectNo`, `examDate`, `studentResult`) values(\'10002\',\'1\',\'2016-02-17 00:00:00\',\'83\');
insert into `result` (`studentNo`, `subjectNo`, `examDate`, `studentResult`) values(\'10003\',\'1\',\'2016-02-17 00:00:00\',\'60\');
insert into `result` (`studentNo`, `subjectNo`, `examDate`, `studentResult`) values(\'10004\',\'1\',\'2016-02-17 00:00:00\',\'60\');
insert into `result` (`studentNo`, `subjectNo`, `examDate`, `studentResult`) values(\'10005\',\'1\',\'2016-02-17 00:00:00\',\'95\');
insert into `result` (`studentNo`, `subjectNo`, `examDate`, `studentResult`) values(\'10006\',\'1\',\'2016-02-17 00:00:00\',\'93\');
insert into `result` (`studentNo`, `subjectNo`, `examDate`, `studentResult`) values(\'10007\',\'1\',\'2016-02-17 00:00:00\',\'23\');

2、

#将学生表中学号为20000的学生的邮箱修改为stu20000@163.com，
密码改为000
UPDATE `student` SET `email` = \'stu20000@163.com\',`loginPwd` = \'000\'
 WHERE `studentName` = \'20000\';

#将数据表科目表中课时数大于200且年级编号为1的科目的课时减少10
UPDATE `subject` SET `classHour`=classHour-9 
WHERE `classHour`>200 AND `gradeID` = 1

subject

3、

#查询2016年2月17日考试前5名的学员的学号和分数
SELECT studentNo,studentResult FROM result
WHERE examDate=\'2016-02-17\'
ORDER BY studentResult DESC
LIMIT 5

#将所有女学生按年龄从大到小排序，从第2条记录开始显示6名女学生的姓名、年龄、出生日期、手机号信息
SELECT studentname,phone,borndate,address FROM student
 WHERE sex = \'女\' ORDER BY borndate LIMIT 2,6;

#按出生年份分组统计学生人数，将各组中人数达到2人的年份和人数显示出来
SELECT YEAR(borndate) AS 出生年份,COUNT(studentNo) AS 人数 
FROM student GROUP BY YEAR(borndate) HAVING 人数>=2;

#查询参加2016年2月17日考试的所有学员的最高分、最低分、平均分。
SELECT MAX(studentResult) AS 最高分,MIN(studentResult) AS 最低分,
AVG(studentResult) AS 平均分 
FROM result
 WHERE examDate = \'2016-2-17\';

4、

SELECT MAX(`studentResult`)  AS 最高分,
               MIN(`studentResult`) AS 最低分
FROM `result`
WHERE `subjectNo`=
    (SELECT `subjectNo` FROM `subject` 
      WHERE `subjectName`=\'Logic Java\' ) AND `examDate`=(SELECT MAX(`examDate`) FROM `result` 
      WHERE `subjectNo`=(SELECT `subjectNo` FROM `subject` WHERE `subjectName`=\'Logic Java\' ) );

5、

SELECT `subjectName` FROM `subject` WHERE `gradeId` IN (
       SELECT `gradeId` FROM `grade` WHERE `gradeName`=\'S1\'
);

8、

SELECT `studentName` FROM `student` 
WHERE `studentNo` NOT IN (
      SELECT `studentNo` FROM `result` 
      WHERE `subjectNo` = (
          SELECT `subjectNo` FROM `subject` 
          WHERE `subjectName`=\'HTML\'
       )
      AND `examDate` = (
          SELECT MAX(`examDate`) FROM `result` 
          WHERE `subjectNo` =(
              SELECT `subjectNo` FROM `subject` 
              WHERE `subjectName`=\'HTML\' ) 
       )
)
AND `gradeId` = (
      SELECT `subjectNo` FROM `subject` 
      WHERE `subjectName`=\'HTML\'
);