[operation] getting started with MySQL on May 23, 2022

create table tb_college
(
    college_id int comment ' College number ',
    college_name varchar(15) not null comment ' The name of the College ', 
    college_desc varchar(1000) comment ' College Introduction ',
    college_birth date comment ' Establishment date of the College ',
    college_url varchar(100) comment ' College website ',
    primary key (college_id) 
)engine=innodb comment ' College schedule ';

create table tb_teacher
(
    teacher_id int primary key comment ' Teacher's job number ',
    teacher_name varchar(30) not null comment ' Teacher's name ',
    teacher_gender boolean default 1 comment ' Gender of Teachers ', 
    teacher_title varchar(10) default ' Assistant ' comment ' Teacher title ',
    teacher_birth date comment ' Teacher's birthday ',
    college__id int comment ' College number ',
    foreign key(college__id) references tb_college(college_id)
    on update cascade
    on delete cascade
)engine=innodb comment ' Teachers list ';

create table tb_course
(
    course_id int primary key comment ' Course number ',
    course_name varchar(15) not null comment ' Course name ',
    course_score decimal(2,1) default 0.5 comment ' course credit ',
    course_semester int comment ' The first semester ',
    course_teacher_id int,
    course_college_id int,
    foreign key(course_teacher_id) references tb_teacher(teacher_id)
    on update cascade
    on delete cascade,
    foreign key(course_college_id) references tb_college(college_id)
    on update cascade
    on delete cascade
)engine=innodb comment ' The curriculum ';
*
 For the first semester 2 An integer mn Express , ten m It means the first one m school year , bits n take 0 Last semester , take 1 It means next semester 
*
insert into tb_college(college_id, college_name, college_desc, college_birth, college_url) value(
    '1',
    ' College of biological science and Engineering ',
    ' School of Bioscience and engineering, South China University of technology in 2004 Founded in , Located in the beautiful campus of South China University of technology . The college has an independent teaching and research building , Complete facilities , Covers an area of 15000 Square meters , It provides a good space for Discipline Construction and development .  at present , Students in school 1023 people , among , Undergraduate 483 people , Graduate student 540 people ; The total number of faculty and staff of the college is 75 people , The teacher series 55 people , professor 25 people , associate professor 26 people , The number of full-time teachers with professional titles above the vice senior level accounts for 93％; Having a doctor's degree accounts for% of the total number of teachers 98%; Including double employed academicians 1 people 、 Distinguished professor of Changjiang Scholars 1 people 、 Chief of national key R & D projects 3 name ; Now there are primary disciplines in biology （ Including biochemistry and molecular biology 、 Cell biology 、 microbiology 、 Biophysics and physiology 、 Second level discipline of medical biology ） And the second level discipline of fermentation engineering , Master's degree in bioengineering and pharmacy , And bioengineering 、 Biotechnology and biopharmaceutical . With the main force of the college “ Biology and biochemistry ” Before entering the world 1% Ranking .',
    '2004-01-01',
    'http://www2.scut.edu.cn/biology/main.htm'
);

insert into tb_college(college_id, college_name, college_desc, college_birth, college_url) value(
    '2',
    ' School of mechanical and automotive engineering ',
    ' The school of mechanical and automotive engineering of South China University of technology is located at the West Lake of Wushan campus, Tianhe District, Guangzhou , Incorporated in 2008 year 1 month , By the former college of mechanical engineering 、 College of industrial equipment and control engineering 、 The College of automotive engineering is a combination of three colleges , It is one of the largest colleges in South China University of technology . The school has a long history , It can be traced back to 1918 The Machinery Department of Guangdong provincial first class a industrial school established in .  The college has a mechanical manufacturing engineering department 、 Department of mechanical and electronic engineering 、 Department of mechanics 、 Department of automotive engineering 、 Department of industrial equipment and control engineering 、 Institute of advanced manufacturing technology and equipment for polymer materials 、 Institute of metal material preparation, forming and equipment 、 Engineering training center and other teaching and scientific research administrative institutions , Have teaching 、 Area of scientific research and office space 3.78 Thousands of square meters , All kinds of scientific instruments and equipment are nearly 2 Ten thousand units . Have 2 A National Engineering Research Center 、1 A national engineering laboratory ,2 National and local joint engineering laboratories ,23 Provincial and ministerial scientific research bases 、3 A national experimental teaching demonstration center .',
    '2008-01-01',
    'http://www2.scut.edu.cn/smae/main.htm'
);

insert into tb_teacher(teacher_id, teacher_name, teacher_gender, teacher_title, teacher_birth) values(
    '1001',
    ' Wangjufang ',
    '0',
    ' professor ',
    '1973-09-01'
),
(
    '1002',
    ' Lin Ying ',
    '0',
    ' professor ',
    '1962-06-01'
),
(
    '1003',
    ' Panli ',
    '1',
    ' professor ',
    '1954-01-01'
),
(
    '1004',
    ' Zhengsuiping ',
    '1',
    ' professor ',
    '1972-01-01'
),
(
    '1005',
    ' Hanshuangyan ',
    '0',
    ' professor ',
    '1976-06-01'
)
;

update tb_teacher set college__id = 1 where teacher_id = 1001;
update tb_teacher set college__id = 1 where teacher_id = 1002;
update tb_teacher set college__id = 1 where teacher_id = 1003;
update tb_teacher set college__id = 1 where teacher_id = 1004;
update tb_teacher set college__id = 1 where teacher_id = 1005;
*
 Forgot to add the college number ... One by one ...
*

insert into tb_course(course_id, course_name, course_score, course_semester, course_teacher_id, course_college_id) values(
    '100001',
    ' Microbiology experiments ',
    '2',
    '21',
    '1001',
    '1'
),
(
    '100002',
    ' Cell microbiology ',
    '1.5',
    '50',
    '1001',
    '1'
),
(
    '100003',
    ' Microbial pharmacology ',
    '2.5',
    '51',
    '1001',
    '1'
),
(
    '100004',
    ' Enzyme engineering ',
    '1',
    '30',
    '1002',
    '1'
),
(
    '100005',
    ' Fermentation engineering ',
    '2',
    '31',
    '1002',
    '1'
),
(
    '100006',
    ' Microbiomics ',
    '2',
    '31',
    '1002',
    '1'
),
(
    '100007',
    ' microbiology ',
    '4',
    '21',
    '1003',
    '1'
),
(
    '100008',
    ' Microbial genetics ',
    '4',
    '60',
    '1003',
    '1'
),
(
    '100009',
    ' biochemistry ',
    '4',
    '21',
    '1004',
    '1'
),
(
    '100010',
    ' Fermentation engineering ',
    '2',
    '31',
    '1004',
    '1'
),
(
    '100011',
    ' Metabolic engineering ',
    '2',
    '21',
    '1004',
    '1'
),
(
    '100012',
    ' genetic engineering ',
    '4',
    '21',
    '1005',
    '1'
),
(
    '100013',
    ' immunology ',
    '2',
    '31',
    '1005',
    '1'
),
(
    '100014',
    ' Modern biochemical experimental technology ',
    '1',
    '30',
    '1005',
    '1'
)
;
*
 If there are too many students in one class, they should be divided into several teachers , Just add it as two courses , For example, above ' Fermentation engineering '.
*