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
mysql -uroot -p123123 -h127.0.0.1
create database MyDb;
show databases;
第2关：创建表
mysql -uroot -p123123 -h127.0.0.1
create database TestDb;
create table t_emp( id int, name varchar(32), deptId int , salary float);
第3关：使用主键约束
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));
第4关：外键约束
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)
);
第5关：添加常用约束
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;
DDL语言的使用
第1关：创建数据库
create database teachingdb;
第2关： 创建表
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**********/
第3关：添加字段
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**********/
第4关：删除字段
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**********/
第5关：修改字段
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**********/
第6关：添加唯一性约束
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**********/
DML语言的使用
第1关：insert...into方式插入数据
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**********/
第2关：更新数据
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;
第3关：更新数据-练习
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**********/
第4关：删除数据
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**********/
第5关：创建表-练习
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**********/
第6关：删除数据-练习1
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**********/
第7关：删除数据-练习2
use teachingdb;
/****请在此编写代码，操作完毕之后点击评测******/
/**********Begin**********/
drop table s1 ;
/**********End**********/
MySQL数据库 - 数据更新
第1关：插入数据
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 ##########
第2关：更新数据
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 ##########
第3关：删除数据
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 ##########
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
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 ##########
第2关：修改字段名与字段数据类型
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;
第3关：添加与删除字段
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;
第4关：修改字段的排列位置
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;
第5关：删除表的外键约束
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;
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
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**********/
第2关：去除重复结果
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**********/
第3关：范围查询
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**********/
第4关：带IN关键字的查询
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**********/
第5关：匹配查询
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**********/
第6关：范围查询-练习
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**********/
第7关：where子句查询
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**********/
单表查询（二）基本查询
第1关：基本查询语句
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 ##########
第2关：带 IN 关键字的查询
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 ##########
第3关：带 BETWEEN AND 的范围查询
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 ##########
单表查询（三）聚集函数
第1关：COUNT( )函数
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**********/
第2关：COUNT( )函数-练习
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**********/
第3关：AVG( )函数、MAX函数和MIN函数
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**********/
第4关：分组查询
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**********/
第5关：倒序排列
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**********/
单表查询（四）-分组操作符与聚集函数
第1关：数据统计（初级）
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
第2关：数据统计初级应用
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
第3关：数据统计综合应用
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
单表查询（五）排序和分组
第1关：对查询结果进行排序
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 ##########
第2关：分组查询
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 ##########
第3关：使用 LIMIT 限制查询结果的数量
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 ##########
单表查询（六）综合查询
第1关：基本查询语句
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 ##########
第2关：带 IN 关键字的查询
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 ##########
第3关：带 BETWEEN AND 的范围查询
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 ##########
第4关：带 LIKE 的字符匹配查询
USE Company;
######### Begin #########
SELECT Name,Salary FROM tb_emp WHERE Name LIKE "C%";
######### End #########
第5关：查询空值与去除重复结果实训三:多表查询(4课时)
USE Company;
######### Begin #########
SELECT * FROM tb_emp WHERE DeptId IS NULL;
######### End #########
######### Begin #########
SELECT DISTINCT Name FROM tb_emp;
######### End #########
第6关：带 AND 与 OR 的多条件查询
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 #########
第7关：对查询结果进行排序
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 ##########
第8关：分组查询
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 ##########
第9关：使用 LIMIT 限制查询结果的数量
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 ##########
实训三:多表查询(4课时)
多表查询-子查询（一）
第1关：子查询
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**********/
第2关：子查询-练习
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**********/
第3关：子查询-练习一
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**********/
第4关：子查询-练习二
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**********/
第5关：子查询-练习三
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**********/
第6关：子查询-练习四
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**********/
多表查询 - 子查询（二）
第1关：带比较运算符的子查询
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 );
第2关：关键字子查询
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 ##########
多表查询-连接查询（一）
第1关：自然连接
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**********/
第2关：等值连接
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**********/
第3关：JOIN连接
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**********/
第4关：自身连接查询
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**********/
第5关：外部连接查询
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**********/
多表查询- 连接查询（二）
第1关：内连接查询
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 ##########
第2关：外连接查询
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 ##########
第3关：复合条件连接查询
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 ##########
大学数据库创建与查询实战
第1关：数据库表设计
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 ##########
第2关：查询（一）
#********* 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 *********#
第3关：查询（二）
#********* 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 *********#
第4关：查询（三）
#********* 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 *********#
第5关：查询（四）
#********* 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 *********#
第6关：查询（五）
#********* 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 *********#
实训四:索引与视图(2课时)
MySQL开发技巧 - 索引
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 ##########
MySQL开发技巧 - 视图
第1关：视图
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 ##########
索引(teachingdb数据库）
第1关：索引
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**********/
第2关：删除索引-练习
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**********/
SQL视图（teachingdb数据库)
第1关：创建视图
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**********/
第2关：创建视图-练习一
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**********/
MySQL-索引和视图
第1关：建立索引
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;
第2关：建立视图并更新视图
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;
第3关：建立基于多表的视图
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;
实训五:数据库安全控制(2课时）
创建用户
第1关：创建用户
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**********/
第2关：创建用户-练习!!!
/****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**********/
授权及回收权限
第1关：授权
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**********/
第2关：授权-练习一
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**********/
第3关：授权-练习二
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**********/
第4关：授权-练习三
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**********/
第5关：回收权限
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**********/
MySQL-安全性控制
第1关：用户和权限
# 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]...
第2关：用户、角色与权限
# 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;
MySQL数据库 - 授权与撤销授权
第1关：数据库授权
########## 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";
第2关：数据库撤销权限
########## 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';
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
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**********/
第2关：创建函数-count_credit
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**********/
第3关：存储过程-调用函数count_credit
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**********/
第4关：创建触发器-计算总学分!!!
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 $$
delimiter ;
/**********End**********/
第5关：创建触发器-练习级联删除操作
use teachingdb;
/****请在此编写代码，操作完毕之后点击评测******/
/**********Begin**********/
delimiter $$
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**********/
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）
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
第2关：建立和调用存储过程（带输出参数）
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;
第3关：建立和调用存储函数
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
第4关：修改多个数据表的存储过程
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;
第5关：使用游标的存储过程
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;
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数据库
本文转载自: https://blog.csdn.net/dgdwa/article/details/131341475
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