目录
实训一:数据定义和操纵(4课时)
初识MySQL数据库
第1关:创建数据库
第2关:创建表
第3关:使用主键约束
第4关:外键约束
第5关:添加常用约束
DDL语言的使用
第1关:创建数据库
第2关: 创建表
第3关:添加字段
第4关:删除字段
第5关:修改字段
第6关:添加唯一性约束
DML语言的使用
第1关:insert...into方式插入数据
第2关:更新数据
第3关:更新数据-练习
第4关:删除数据
第5关:创建表-练习
第6关:删除数据-练习1
第7关:删除数据-练习2
MySQL数据库 - 数据更新
第1关:插入数据
第2关:更新数据
第3关:删除数据
MySQL数据库 - 数据库和表的基本操作(一)
第1关:查看表结构与修改表名
第2关:修改字段名与字段数据类型
第3关:添加与删除字段
第4关:修改字段的排列位置
第5关:删除表的外键约束
实训二:单表查询(4课时)
单表查询(一)student表查询
第1关:选择列查询
第2关:去除重复结果
第3关:范围查询
第4关:带IN关键字的查询
第5关:匹配查询
第6关:范围查询-练习
第7关:where子句查询
单表查询(二)基本查询
第1关:基本查询语句
第2关:带 IN 关键字的查询
第3关:带 BETWEEN AND 的范围查询
单表查询(三)聚集函数
第1关:COUNT( )函数
第2关:COUNT( )函数-练习
第3关:AVG( )函数、MAX函数和MIN函数
第4关:分组查询
第5关:倒序排列
单表查询(四)-分组操作符与聚集函数
第1关:数据统计(初级)
第2关:数据统计初级应用
第3关:数据统计综合应用
单表查询(五)排序和分组
第1关:对查询结果进行排序
第2关:分组查询
第3关:使用 LIMIT 限制查询结果的数量
单表查询(六)综合查询
第1关:基本查询语句
第2关:带 IN 关键字的查询
第3关:带 BETWEEN AND 的范围查询
第4关:带 LIKE 的字符匹配查询
第5关:查询空值与去除重复结果实训三:多表查询(4课时)
第6关:带 AND 与 OR 的多条件查询
第7关:对查询结果进行排序
第8关:分组查询
第9关:使用 LIMIT 限制查询结果的数量
实训三:多表查询(4课时)
多表查询-子查询(一)
第1关:子查询
第2关:子查询-练习
第3关:子查询-练习一
第4关:子查询-练习二
第5关:子查询-练习三
第6关:子查询-练习四
多表查询 - 子查询(二)
第1关:带比较运算符的子查询
第2关:关键字子查询
多表查询-连接查询(一)
第1关:自然连接
第2关:等值连接
第3关:JOIN连接
第4关:自身连接查询
第5关:外部连接查询
多表查询- 连接查询(二)
第1关:内连接查询
第2关:外连接查询
第3关:复合条件连接查询
大学数据库创建与查询实战
第1关:数据库表设计
第2关:查询(一)
第3关:查询(二)
第4关:查询(三)
第5关:查询(四)
第6关:查询(五)
实训四:索引与视图(2课时)
MySQL开发技巧 - 索引第1关:索引
MySQL开发技巧 - 视图
第1关:视图
索引(teachingdb数据库)
第1关:索引
第2关:删除索引-练习
SQL视图(teachingdb数据库)
第1关:创建视图
第2关:创建视图-练习一
MySQL-索引和视图
第1关:建立索引
第2关:建立视图并更新视图
第3关:建立基于多表的视图
实训五:数据库安全控制(2课时)
创建用户
第1关:创建用户
第2关:创建用户-练习!!!
授权及回收权限
第1关:授权
第2关:授权-练习一
第3关:授权-练习二
第4关:授权-练习三
第5关:回收权限
MySQL-安全性控制
第1关:用户和权限
第2关:用户、角色与权限
MySQL数据库 - 授权与撤销授权
第1关:数据库授权
第2关:数据库撤销权限
实训六:数据完整性
实训七:存储过程与触发器(4课时)
存储过程、函数与触发器
第1关:创建存储过程
第2关:创建函数-count_credit
第3关:存储过程-调用函数count_credit
第4关:创建触发器-计算总学分!!!
第5关:创建触发器-练习级联删除操作
存储过程
第1关:建立和调用存储过程(不带输出参数的存储过程)
第2关:建立和调用存储过程(带输出参数)
第3关:建立和调用存储函数
第4关:修改多个数据表的存储过程
第5关:使用游标的存储过程
mysql -uroot -p123123 -h127.0.0.1 create database MyDb; show databases;
mysql -uroot -p123123 -h127.0.0.1 create database TestDb; create table t_emp( id int, name varchar(32), deptId int , salary float);
mysql -uroot -p123123 -h127.0.0.1 create database MyDb; use MyDb; create table t_user1( userId INT PRIMARY KEY, name VARCHAR(32), password VARCHAR(11), phone VARCHAR(11), email VARCHAR(32)); create table t_user2( name VARCHAR(32), phone VARCHAR(11), email VARCHAR(32), PRIMARY KEY(name,phone));
mysql -uroot -p123123 -h127.0.0.1 create database MyDb; use MyDb; CREATE TABLE t_class ( id INT PRIMARY KEY, name VARCHAR(22) ); CREATE TABLE t_student ( id INT PRIMARY KEY, name VARCHAR(22) , classId int, CONSTRAINT fk_stu_class1 FOREIGN KEY(classId) REFERENCES t_class(id) );
mysql -uroot -p123123 -h127.0.0.1 CREATE DATABASE MyDb; USE MyDb; CREATE TABLE t_user ( id INT PRIMARY KEY AUTO_INCREMENT, username VARCHAR(32) NOT NULL UNIQUE, sex VARCHAR(4) DEFAULT '男' )DEFAULT CHARSET=utf8;
create database teachingdb;
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ create table student( sno char(5) primary key, sname varchar(20) NOT null, sdept varchar(20) not null, sclass char(2) not null, ssex char(1), birthday date, totalcredit decimal(4,1) ); /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ alter table student add nativeplace varchar(20); -- alter table student add nativeplace varchar(20); /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ ALTER TABLE student DROP nativeplace; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ ALTER TABLE student MODIFY ssex varchar(3); /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ alter table course add constraint uk_cno unique(cname); /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ INSERT INTO student VALUES (11111,'马明','计算机','01','女','2000-01-02',null); /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ UPDATE student SET totalcredit = 2.0 /**********End**********/ -- update student set totalcredit=2.0;
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ UPDATE student SET birthday = '2000-01-22' WHERE sname='马小燕'; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ DELETE FROM student WHERE sno = '11111'; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ -- select * from student ; create table s1 as select * from student; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ DELETE FROM s1 WHERE sdept='计算机'; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ drop table s1 ; /**********End**********/
USE Company; #请在此处添加实现代码 ########## Begin ########## ########## bundle insert the value ######### INSERT INTO tb_emp(Id,Name,DeptId,Salary) VALUES (1,"Nancy",301,2300.00), (2,"Tod",303,5600.00),(3,"Carly",301,3200.00); ########## End ########## SELECT * FROM tb_emp; ########## End ##########
USE Company; #请在此处添加实现代码 ########## Begin ########## ########## update the value ########## UPDATE tb_emp SET Name="Tracy",DeptId=302,Salary=4300.00 WHERE id=3; ########## End ########## SELECT * FROM tb_emp; ########## End ##########
USE Company; #请在此处添加实现代码 ########## Begin ########## ########## delete the value ########## DELETE FROM tb_emp WHERE Salary>3000; ########## End ########## SELECT * FROM tb_emp; ########## End ##########
USE Company; ########## Begin ########## ########## modify the table name ########## ALTER table tb_emp RENAME jd_emp; ########## show tables in this database ########## show tables; ########## describe the table ########## describe jd_emp; ########## End ##########
USE Company; #请在此处添加实现代码 ########## Begin ########## ########## change the column name ########## ALTER TABLE tb_emp change Id prod_id int(11); ########## change the data type of column ########## ALTER TABLE tb_emp MODIFY Name varchar(30); ########## End ########## DESCRIBE tb_emp;
USE Company; #请在此处添加实现代码 ########## Begin ########## ########## add the column ########## ALTER TABLE tb_emp ADD Country varchar(20) AFTER Name; ########## delete the column ########## ALTER TABLE tb_emp DROP Salary; ########## End ########## DESCRIBE tb_emp;
USE Company; #请在此处添加实现代码 ########## Begin ########## ########## modify the column to top ########## ALTER TABLE tb_emp MODIFY Name varchar(25) FIRST; ########## modify the column to the rear of another column ########## ALTER TABLE tb_emp MODIFY DeptId int(11) AFTER Salary; ########## End ########## DESCRIBE tb_emp;
USE Company; #请在此处添加实现代码 ########## Begin ########## ########## delete the foreign key ########## ALTER TABLE tb_emp DROP FOREIGN KEY emp_dept; ########## End ########## SHOW CREATE TABLE tb_emp \G;
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select sno 学号, sname 姓名 from student where birthday >= "2000.1.1" and birthday <= "2000.12.31"; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ SELECT DISTINCT sno FROM score ; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ SELECT * FROM course WHERE ctime BETWEEN 1 AND 50; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ SELECT * from student where sdept!='计算机' and sdept!='信息'; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select * from student where sname like '%马__'; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select * from score where tno='052501'and grade>='80' and grade<='90' and sno like '96%'; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select sno, cno from score where grade is null; /**********End**********/
USE Company; #请在此处添加实现代码 ########## Begin ########## ########## retrieving the Name and Salary ########## select Name,Salary from tb_emp; ########## retrieving all the table ########## select * from tb_emp; ########## End ##########
USE Company; #请在此处添加实现代码 ########## Begin ########## ########## retrieving the Name and Salary with IN statement ########## SELECT Name,Salary FROM tb_emp WHERE Id !='1'; ########## End ##########
USE Company; #请在此处添加实现代码 ########## Begin ########## ########## retrieving the Name and Salary with BETWEEN AND statement ########## SELECT Name,Salary FROM tb_emp WHERE Salary BETWEEN 3000 AND 5000; ########## End ##########
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select count(*) from student; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select count(distinct sno) from score; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select cno,AVG(grade),MAX(grade),MIN(grade) from score group by(cno); /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select sdept,count(*) from student group by sdept having count(*)<3; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select sdept,sclass,COUNT(*) from student group by sdept,sclass order by count(*) desc,sdept desc; /**********End**********/
USE test_wyy_db_guet GO SET NOCOUNT ON -- ********** Begin ********** -- -- ********** 此处写第一题的SQL语句 ********** -- select count(*) from course where credit>2; -- ********** End ********** -- GO -- ********** Begin ********** -- -- ********** 此处写第二题的SQL语句 ********** -- select sum(credit) from course where cno like "BT%"; -- ********** End ********** -- GO -- ********** Begin ********** -- -- ********** 此处写第三题的SQL语句 ********** -- select left(cno,2),count(*)from course group by left(cno,2); -- ********** End ********** -- GO
USE test_wyy_db_guet Go SET NOCOUNT ON -- ********** Begin ********** -- ---------- 第一题---------- select count(model) from printer where color = "T" and type = "laser"; -- ********** End ********** -- GO -- ********** Begin ********** -- ---------- 第二题---------- select min(price) from printer; -- ********** End ********** -- GO -- ********** Begin ********** -- ---------- 第三题---------- select model,price from printer where price >=(select max(price) from printer); -- ********** End ********** -- GO
USE test_wyy_db_guet Go SET NOCOUNT ON ---------- 第1题 ---------- -- ********** Begin ********** -- select hd from V_test group by hd having count(*) <3; -- ********** End ********** -- GO ---------- 第2题 ---------- -- ********** Begin ********** -- select max(AvgSpeed) from (select maker maker,Avg(speed) AvgSpeed from V_test group by maker )name; -- ********** End ********** -- GO ---------- 第3题 ---------- -- ********** Begin ********** -- select maker,count(*) from V_test where price>1000 group by maker; -- ********** End ********** -- GO ---------- 第4题 ---------- -- ********** Begin ********** -- select maker,type,AVG(price) from V_test group by maker,type; -- ********** End ********** -- GO
USE School; #请在此处添加实现代码 ########## Begin ########## ########## 查询1班同学的所有信息以成绩降序的方式显示结果 ########## select * from tb_score where class_id = 1 order by score desc; ########## End ##########
USE School; #请在此处添加实现代码 ########## Begin ########## ########## 对班级名称进行分组查询 ########## SELECT * FROM tb_class GROUP BY class_id; ########## End ##########
USE School; #请在此处添加实现代码 ########## Begin ########## ########## 查询班级中第2名到第5名的学生信息 ########## SELECT * FROM tb_score order by score desc LIMIT 1,4; ########## End ##########
USE Company; #请在此处添加实现代码 ########## Begin ########## ########## retrieving the Name and Salary ########## select Name,Salary from tb_emp; ########## retrieving all the table ########## select * from tb_emp; ########## End ##########
USE Company; #请在此处添加实现代码 ########## Begin ########## ########## retrieving the Name and Salary with IN statement ########## SELECT Name,Salary FROM tb_emp WHERE Id NOT IN (1); ########## End ##########
USE Company; #请在此处添加实现代码 ########## Begin ########## ########## retrieving the Name and Salary with BETWEEN AND statement ########## SELECT Name,Salary FROM tb_emp WHERE Salary BETWEEN 3000 AND 5000; ########## End ##########
USE Company; ######### Begin ######### SELECT Name,Salary FROM tb_emp WHERE Name LIKE "C%"; ######### End #########
USE Company; ######### Begin ######### SELECT * FROM tb_emp WHERE DeptId IS NULL; ######### End ######### ######### Begin ######### SELECT DISTINCT Name FROM tb_emp; ######### End #########
USE Company; ######### Begin ######### SELECT * FROM tb_emp WHERE DeptId=301 AND Salary > 3000; ######### End ######### ######### Begin ######### SELECT * FROM tb_emp WHERE DeptId=301 OR DeptId=303; ######### End #########
USE School; #请在此处添加实现代码 ########## Begin ########## ########## 查询1班同学的所有信息以成绩降序的方式显示结果 ########## select * from tb_score where class_id = 1 order by score desc; ########## End ##########
USE School; #请在此处添加实现代码 ########## Begin ########## ########## 对班级名称进行分组查询 ########## SELECT * FROM tb_class GROUP BY class_id; ########## End ##########
USE School; #请在此处添加实现代码 ########## Begin ########## ########## 查询班级中第2名到第5名的学生信息 ########## SELECT * FROM tb_score order by score desc LIMIT 1,4; ########## End ##########
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select sname, birthday from student where birthday < (select birthday from student where sname = "刘东明"); /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select student.sno,student.sname from student left join score on student.sno=score.sno where score.sno is null; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select sname,sdept,birthday from student where birthday < any(select birthday from student where sdept="数学") and sdept <> "数学"; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select student.sname,student.sdept from student,score where student.sno=score.sno and score.cno="004"; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select score.sno from score where cno in (select score.cno from score,student where student.sno=score.sno and student.sname='刘东明') and score.sno not in(select student.sno from student where student.sname='刘东明') group by sno having count(cno) >=(select count(cno) from score,student where score.sno=student.sno and student.sname='刘东明') /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select distinct score.sno from score group by sno having count(cno) >=(select count(cno) from course); /**********End**********/
USE Company; #请在此处添加实现代码 ########## Begin ########## #1.查询大于所有平均年龄的员工姓名与年龄 select name, age from tb_emp where age > (select avg(age) from tb_emp );
USE Company; #请在此处添加实现代码 ########## Begin ########## #1.使用 ALL 关键字进行查询 select position,salary from tb_salary where salary >(select max(salary) from tb_salary where position="Java"); #2.使用 ANY 关键字进行查询 select position,salary from tb_salary where salary >(select min(salary) from tb_salary where position="Java"); #3.使用 IN 关键字进行查询 select position,salary from tb_salary where position="Java"; ########## End ##########
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select student.sname,course.cname,teach.tname,score.grade from student,score,course,teach where student.sno=score.sno and score.tno=teach.tno and score.cno=course.cno and teach.tname="严敏" and course.cname="数学分析"; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select student.sname,course.cname,teach.tname,score.grade from student,score,course,teach where student.sno=score.sno and score.tno=teach.tno and score.cno=course.cno and teach.tname="严敏" and course.cname="数学分析"; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select student.sname,course.cname,teach.tname,score.grade from student,score,course,teach where student.sno=score.sno and score.tno=teach.tno and score.cno=course.cno and teach.tname="严敏" and course.cname="数学分析"; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select s2.sname,s2.birthday from student s1,student s2 where s1.sname="刘东明" and s1.birthday>s2.birthday; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ select student.sno,student.sname from student left join score on student.sno=score.sno where score.sno is null; /**********End**********/
USE School; ########## 查询数据表中学生姓名和对应的班级 ########## #请在此处添加实现代码 ########## Begin ########## select tb_student.name studentName,tb_class.name className from tb_student,tb_class where tb_student.class_id=tb_class.id ########## End ##########
USE School; ########## 使用左外连接查询所有学生姓名和对应的班级 ########## #请在此处添加实现代码 ########## Begin ########## select s1.name studentName,s2.name className from tb_student s1 left join tb_class s2 on s1.class_id=s2.id; ########## End ########## ########## 使用右外连接查询所有学生姓名和对应的班级 ########## #请在此处添加实现代码 ########## Begin ########## select s1.name studentName,s2.name className from tb_student s1 right join tb_class s2 on s1.class_id=s2.id; ########## End ##########
USE School; ########## 查询所有班级里分数在90分以上的学生的姓名和学生的成绩以及学生所在的班级 ########## #请在此处添加实现代码 ########## Begin ########## select tb_student.name studentName,tb_student.score,tb_class.name className from tb_student,tb_class where tb_student.class_id=tb_class.id and score>90; ########## End ##########
use universityDB; create table instructor( ID varchar(5) ,primary key(ID), name varchar(20) NOT NULL, dept_name varchar(20) DEFAULT NULL , salary numeric(8,2) check(salary>29000), foreign key (dept_name) references department(dept_name) on delete set null ); create table section( course_id varchar(8) , sec_id varchar(8) , semester varchar(6) check(semester in('Fall','Winter','Spring','Summer')), year numeric(4,0) , building varchar(15) , room_number varchar(7) , time_slot_id varchar(4) , primary key (course_id, sec_id, semester, year), foreign key (course_id) references course(course_id) on delete cascade, foreign key (building, room_number) references classroom(building, room_number) ); ########## End ##########
#********* Begin *********# echo " select name from student where dept_name='Biology'; select name from instructor where salary> any(select salary from instructor where dept_name='Biology'); select name,department.dept_name,building from instructor ,department where instructor.dept_name=department.dept_name; select distinct instructor.dept_name from instructor,department where instructor.dept_name=department.dept_name and building='Watson'; " #********* End *********#
#********* Begin *********# echo " select count(distinct ID) from teaches where semester ='spring' and year='2010'; select instructor.ID,name,dept_name from teaches,instructor where semester='Fall'and year='2009' and teaches.ID=instructor.ID group by ID having count(distinct course_id)=2; select dept_name, count(distinct instructor.ID) as instr_count from instructor,teaches where semester='Spring' and year='2010' and instructor.ID=teaches.ID group by dept_name having count(distinct course_id)>=1 " #********* End *********#
#********* Begin *********# echo " select instructor.* from instructor order by salary desc,name asc ; select max(salary) from instructor; select dept_name from instructor group by dept_name having avg(salary)=( select max(avgs) from(select avg(salary) avgs,dept_name from instructor group by dept_name) a); select dept_name, avg(salary) as avg_salary from instructor group by dept_name having avg(salary)>50000 order by dept_name asc,avg(salary) desc; " #********* End *********#
#********* Begin *********# echo " select distinct course_id from section where semester='Fall' and year=2009 and course_id not in (select course_id from section where semester='Spring' and year=2010); select course_id from section as S where year=2009 and semester='Fall' and exists (select section.* from section as T where year=2010 and semester='Spring' and S.course_id=T.course_id); select course_id from section where year=2009 and semester='Fall' union all select course_id from section where year=2010 and semester='Spring'; select course_id,semester,year,sec_id,avg(tot_cred) from takes join student join department on takes.ID = student.ID where year=2009 group by course_id,semester,year,sec_id having count(takes.ID)>=13; " #********* End *********#
#********* Begin *********# echo " select instructor.name,teaches.course_id from instructor,teaches where instructor.ID=teaches.ID and dept_name='Physics'; select name from instructor where dept_name='Physics' and salary>80000; update instructor set salary = case when salary <= 100000 then salary*1.05 else salary*1.03 end; create view Physics_fall_2009 as select course.course_id,building,room_number from course,section where course.course_id = section.course_id and course.dept_name='Physics' and section.semester='Fall' and section.year='2009'; " #********* End *********#
第1关:索引
use School; #请在此处添加实现代码 ########## Begin ########## #1.创建名为pk_student的主键索引 create table student( stu_id int not null, name varchar(25) not null, age int not null, sex char(2) not null, classes int not null, grade int not null, primary key(stu_id) ); #2.创建名为idx_age的普通索引 create index idx_age on student(age); #3.创建名为uniq_classes的唯一索引 create unique index uniq_classes on student(classes); #4.创建名为idx_group的组合索引 create index idx_group on student(name,sex,grade); ########## End ##########
use School; #请在此处添加实现代码 ########## Begin ########## create view stu_view as select math,chinese,math+chinese from student; #1.创建单表视图 create view stu_classes as select student.stu_id,name,classes from student,stu_info where student.stu_id=stu_info.stu_id; #2.创建多表视图 ########## End ##########
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ create index idx_sname on student(sname); /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ drop index idx_sname; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ create view student_cs as select * from student where sdept="计算机"; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ create view v_grade_avg as select sno 学号, avg(grade) 平均成绩 from score group by sno; /**********End**********/
use province; #代码开始 alter table jdxx add primary key zsy(sf,cs,qx,name); create index namesy on jdxx(name); #代码结束 show index in jdxx\g;
use province; #代码开始 create view csxx as select qx,name from jdxx where qx in('天心区','宁乡县','岳麓区','开福区','望城县','浏阳市','芙蓉区','长沙县','雨花区'); update csxx set name="月湖街道" where name="西湖街道" and qx='开福区'; #代码结束 select * from csxx;
use province #代码开始 create view csbm as select jdxx.qx,jdxx.name,qxyzbm.qxbm from jdxx,qxyzbm where jdxx.qx=qxyzbm.qx and jdxx.cs='长沙市'; #代码结束 select * from csbm;
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ create user user1 @localhost identified by 'user1'; /**********End**********/
/****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ create user user2 identified by 'user2'; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ GRANT USAGE ON *.* TO 'user1'@'localhost' ; GRANT ALL PRIVILEGES ON `teachingdb2`.* TO 'user1'@'localhost'; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ grant select on teachingdb.* to user1@localhost with grant option; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ #grant all on teachingdb to user1@localhost, user2@localhost; grant all on student to user1@localhost, user2@localhost; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ #grant update(grade) on score to user2@localhost; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ revoke select on teachingdb.* from user1@localhost; /**********End**********/
# 请填写语句,完成以下功能: #(1) 创建用户tom和jerry,初始密码均为'123456'; create user tom identified by '123456'; create user jerry identified by '123456'; #(2) 授予用户tom查询客户的姓名,邮箱和电话的权限,且tom可转授权限;grant 权限[,权限] ... on 数据库对象 to user|role,[user|role]... [with grant option] grant select(c_name,c_mail,c_phone) on client to tom with grant option; #(3) 授予用户jerry修改银行卡余额的权限; grant update(b_balance) on bank_card to jerry; #(4) 收回用户Cindy查询银行卡信息的权限。 revoke select on bank_card from Cindy; #revoke 权限[,权限]... on 数据库对象 from user|role[,user|role]...
# 请填写语句,完成以下功能: # (1) 创建角色client_manager和fund_manager; create role client_manager,fund_manager; # (2) 授予client_manager对client表拥有select,insert,update的权限; grant select,insert,update on client to client_manager; # (3) 授予client_manager对bank_card表拥有查询除银行卡余额外的select权限; grant select(b_number,b_type,b_c_id)on bank_card to client_manager; # (4) 授予fund_manager对fund表的select,insert,update权限; grant select,insert,update on fund to fund_manager; # (5) 将client_manager的权限授予用户tom和jerry; grant client_manager to tom,jerry; # (6) 将fund_manager权限授予用户Cindy. grant fund_manager to Cindy;
########## 开始编写 SQL ########## ########## 开始编写 SQL ########## -- set password for casual_user@localhost=password('123456'); -- grant select,insert,update on *.* to -- casual_user@localhost identified by'123456'; -- grant select,insert,update on *.* to casual_user@'localhost' identified by "123123"; set password for casual_user@'localhost' = Password('123456'); grant select,insert,update on *.* to casual_user@'localhost' identified by "123456";
########## 开始编写 SQL ########## -- revoke all -- on mydb1.table1 -- from 'user1'@'localhost'; -- revoke all -- on mydb1.table2 -- from 'user1'@'localhost'; -- revoke insert,select,update,create,delete,alter -- on mydb2.* -- from 'user2'@'localhost'; -- revoke all on mydb1.table1 from 'user1'@'ip'; revoke all on mydb1.table1 from user1@'localhost'; revoke all on mydb1.table2 from user1@'localhost'; revoke select,update,insert,create,delete,alter on mydb2.* from user2@'localhost';
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ delimiter $$ create procedure pro_findname(in name char(3)) Begin select * from student where sname like concat ('%',name,'%'); End $$ delimiter ; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ delimiter $ create function count_credit(psno char(10)) returns int Begin declare xx int; select sum(credit) from course where cno in( select cno from score where grade >=60 and sno=psno ) into xx; return xx; end$ delimiter ; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ delimiter // create procedure p_count_credit() Begin declare flag boolean default true; declare psno char(5); declare stu_cur cursor for select sno from student; declare continue handler for not found set flag=false; open stu_cur; while flag do fetch stu_cur into psno; update student set totalcredit=count_credit(psno) where sno=psno; end while; close stu_cur; end // delimiter ; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ delimiter $$ drop trigger if exists sum_credit$$ create trigger sum_credit after insert on score for each row Begin update student set totalcredit=totalcredit (select credit from course where cno=new.cno) where sno=new.sno and new.grade>=60; end $$ delimiter ; /**********End**********/
use teachingdb; /****请在此编写代码,操作完毕之后点击评测******/ /**********Begin**********/ delimiter $$ drop trigger if exists del_student_score$$ create trigger del_student_score before delete on student for each row Begin delete from score where sno=old.sno; end$$ delimiter ; /**********End**********/
use province; #代码开始 #定义过程 #调用过程 use province; #代码开始 delimiter $$ create procedure dqxx(in city varchar(10),in district varchar(10)) begin declare x int; declare jd int; declare z int; declare qt int; select count(name) from jdxx where cs = city and qxmc = district and name like "%乡" into x; select count(name) from jdxx where cs = city and qxmc = district and name like "%街道" into jd; select count(name) from jdxx where cs = city and qxmc = district and name like "%镇" into z; select count(name) from jdxx where cs = city and qxmc = district and name not like "%镇" and name not like "%街道" and name not like "%乡" into qt; select x 乡, jd 街道, z 镇, qt 其他; end $$ delimiter ; call dqxx("长沙市", "开福区"); call dqxx("厦门市", "同安区"); #代码结束 #代码结束
use sale; #代码开始 #定义过程 #调用过程 use sale; #代码开始 delimiter $$ create procedure ygyj(in nf int, in yf int, in xm varchar(10), out pj varchar(10)) begin declare jg int; select sum(sjfk) from xsd join gzry on gzry.gyh = xsd.gyh where year(xsrq) = nf and month(xsrq) = yf and gyxm = xm into jg; case when isnull(jg) then set pj = "无业绩"; when jg < 5000 then set pj = "不达标"; when jg < 10000 then set pj = "达标"; else set pj = "优秀"; end case; end $$ delimiter ; call ygyj(2015, 7, "王雅静", @yj1); call ygyj(2015, 6, "廖秉娴", @yj2); call ygyj(2015, 7, "赵敏", @yj3); call ygyj(2015, 7, "章伟", @yj4); #代码结束 select @yj1,@yj2,@yj3,@yj4;
use sale; #代码开始 #函数定义 #调用函数 use sale; #代码开始 delimiter $$ create function gkjb(nf int, xm varchar(10)) returns varchar(10) DETERMINISTIC begin declare jg int; declare pj varchar(10); select sum(sjfk) from xsd join gk on gk.hyh = xsd.hyh where name = xm and year(xsrq) = nf into jg; case when isnull(jg) then set pj = "非会员"; when jg < 5000 then set pj = "一般会员"; when jg < 10000 then set pj = "vip"; else set pj = "超级vip"; end case; return pj; end $$ delimiter ; select name 姓名, gkjb(2015, name) 等级 from gk; #代码结束
use library; #代码开始 #定义过程 #调用过程 use library; #代码开始 delimiter $$ create procedure hs(in sh varchar(8), in dzbh varchar(3), in rq date, out zt varchar(12)) begin declare jywh int; select count(*) from borrow where txm=sh and dzzh=dzbh and isnull(hsrq) into jywh; if jywh=0 then set zt = "没有该借阅"; else update borrow set hsrq=rq where dzzh=dzbh and txm=sh and isnull(hsrq); update book set zk=1 where txm=sh; set zt = "还书成功"; end if; end $$ delimiter ; call hs("P0000001", "001", "2022-5-1", @zt1); call hs("P0000001", "002", "2022-5-1", @zt2); #代码结束 select @zt1,@zt2; select txm, sm, zk from book; select * from borrow;
use province; #代码开始 use province; #代码开始 delimiter $$ create procedure tjdq(in sm varchar(10)) begin declare flag int default 1; declare city varchar(10); declare qx varchar(10); declare jd int; declare x int; declare z int; declare qt int; declare dq cursor for select distinct cs, qxmc from jdxx where sf = sm; declare continue handler for not found set flag = 0; delete from dqtj; open dq; fetch dq into city, qx; while flag = 1 do select count(*) from jdxx where cs = city and qxmc = qx and name like "%街道" into jd; select count(*) from jdxx where cs = city and qxmc = qx and name like "%乡" into x; select count(*) from jdxx where cs = city and qxmc = qx and name like "%镇" into z; select count(*) from jdxx where cs = city and qxmc = qx and name not like "%镇" and name not like "%街道" and name not like "%乡" into qt; insert into dqtj values(city, qx, x, jd, z, qt); fetch dq into city, qx; end while; close dq; end $$ delimiter ; call tjdq("安徽省"); #代码结束 select * from dqtj;