• 安装并配置MySQL 

1.打开控制台

Win+r键

2.登录MYSQL

• 数据库、表的基本操作

创建电子商城数据库“mall_姓名全拼”

create database mall_tushi;

使用电子商城数据库

use mall_tushi;

创建用户表“user_姓名全拼”，表中字段信息如下：

字段名	数据类型	长度	主、外键	其他约束	备注信息
phone	char	11	主键		注册手机号
username	varchar	20		非空，唯一	用户名
password	varchar	20		非空	密码
question	text			非空	找回密码问题
answer	text			非空	找回密码问题答案

 create table user_tushi(
    ->  phone char(11)  primary key  comment"注册手机号",
    -> username   varchar(20)  not null unique  comment"用户名",
    -> password    varchar(20)  not null         comment"密码",
    -> question    text         not null         comment"找回密码问题",
    -> answer      text         not null         comment"找回密码问题答案"
    -> );

2.创建卖家信息表“seller_姓名全拼”，表中字段信息如下：

字段名	数据类型	长度	主、外键	其他约束	备注信息
id	char	16	主键		卖家ID(S_DATE_XXXXX)
phone	char	11	外键(user.phone)	非空，唯一	注册手机号
open_date	date			非空	开业时间
name	varchar	50		非空	店铺名称
nickname	varchar	30		非空	掌柜昵称

create table seller_tushi(
    -> id     char(16)    primary key    comment"卖家ID(S_DATE_XXXXX)",
    -> phone  char(11)    not null unique  comment"注册手机号",
    -> open_date    date   not null      comment"开业时间",
    -> name    varchar(50)       not null     comment"店铺名称",
    -> nickname    varchar(30)   not null     comment"掌柜昵称",
    -> constraint fk_seller_tushi_phone foreign key(phone) references user_tushi(phone)
    -> ); 

3.创建买家信息表“buyer_姓名全拼”，表中字段信息如下：

字段名	数据类型	长度	主、外键	其他约束	备注信息
id	char	16	主键		买家ID(B_DATE_XXXXX)
phone	char	11	外键(user.phone)	非空，唯一	注册手机号
nickname	varchar	30		非空	买家昵称
gender	enum(“miss”,”mr”)			默认miss	性别
height	int	3			身高cm
weight	double				体重kg

create table buyer_tushi(
id char(16) primary key comment"买家ID(B_DATE_XXXXX)",
phone char(11)not null unique comment"注册手机号",
nickname varchar(30) not null comment"买家昵称",
gender enum("miss","mr") default"miss" comment"性别",
height int(3) comment"身高cm",
weight double comment"体重kg",
constraint fk_buyer_tushi_phone foreign key(phone) references user_tushi(phone)
);

4.创建地址表“address_姓名全拼”，表中字段信息如下：

字段名	数据类型	长度	主、外键	其他约束	备注信息
id	char	16	主键		地址ID (A_DATE_XXXXX)
buyer_id	char	16	外键(buyer.id)	非空	买家ID
contact_phone	char	11		非空	收货人联系方式
detail_address	text			非空	详细地址
is_default	enum(“yes”,”no”)			默认 no	是否默认地址

create table address_tushi(
id char(16) primary key comment"地址ID (A_DATE_XXXXX)",
buyer_id char(16)not null comment"买家ID",
contact_phone char(11) not null comment"收货人联系方式",
detail_address text not null comment"详细地址",
is_default enum("yes","no")default"no" comment"是否默认地址",
constraint fk_address_tushi_buyer_id foreign key(buyer_id) references buyer_tushi(id)
); 

5.创建产品种类表“product_type_姓名全拼”，表中字段信息如下：

字段名	数据类型	长度	主、外键	其他约束	备注信息
code	char	6	主键		产品种类编码(TXXXXX)
name	varchar	30		非空	产品种类名称

create table product_type_tushi(
code char(6)primary key comment"产品种类编码(TXXXXX)",
name varchar(30) not null comment"产品种类名称"
); 

6.创建产品表“product_姓名全拼”，表中字段信息如下：

字段名	数据类型	长度	主、外键	其他约束	备注信息
id	char	16	主键		产品编号(P_DATE_XXXXX)
seller_id	char	16	外键(seller.id)	非空	卖家ID
type_id	char	6	外键(product_type.code)	非空	产品种类编码
name	varchar	100		非空	产品名称
picture	text				产品展示图
unit_price	double			非空	单价
quantity	int	10		默认 100	库存数量

create table product_tushi(
id char(16) primary key  comment"产品编号(P_DATE_XXXXX)",
seller_id char(16) not null comment"卖家ID",
type_id char(6) not null comment"产品种类编码",
name varchar(100) not null comment"产品名称",
picture text comment"产品展示图",
unit_price double not null comment"单价",
quantity int(10) default"100" comment"库存数量",
constraint fk_product_zhongzheng_seller_id foreign key(seller_id) references seller_tushi(id),
constraint fk_product_tushi_type_id foreign key(type_id) references product_type_tushi(code)
); 

7.创建订单表“order_姓名全拼”，表中字段信息如下：

字段名	数据类型	长度	主、外键	其他约束	备注信息
id	char	16	主键		订单编号(O_DATE_XXXXX)
seller_id	char	16	外键(seller.id)	非空	卖家ID
buyer_id	char	16	外键(buyer.id)	非空	买家ID
address_id	char	16	外键(address.id)	非空	地址ID
total_price	double			默认0	总价
actrual_payment	double			默认0	实付款

create table order_tushi(
id char(16) primary key comment"订单编号(O_DATE_XXXXX)",
seller_id char(16) not null comment"卖家ID",
buyer_id char(16) not null comment"买家ID",
address_id char(16) not null comment"地址ID",
total_price double default"0" comment"总价",
actrual_payment double default"0" comment"实付款",
constraint fk_order_tushi_seller_id foreign key(seller_id) references seller_tushi(id),
constraint fk_order_tushi_buyer_id foreign key(buyer_id) references buyer_tushi(id),
constraint fk_order_tushi_address_id foreign key(address_id) references address_tushi(id)
); 

8.创建订单详情表“order_detail_姓名全拼”，表中字段信息如下：

字段名	数据类型	长度	主、外键	其他约束	备注信息
id	int	10	主键	自增
order_id	char	16	外键(order.id)	非空	订单编号
product_id	char	16	外键(product.id)	非空	产品编号
purchase_quantity	int	3		默认1	采购数量
discount_unit_price	double			非空	产品折后价

create table order_detail_tushi(
id int(10)primary key auto_increment,
order_id char(16) not null comment"订单编号",
product_id char(16) not null comment"产品编号",
purchase_quantity int(3) default"1" comment"采购数量",
discount_unit_price double not null comment"产品折后价",
constraint fk_order_detail_tushi_order_id foreign key(order_id) references order_tushi(id),
constraint fk_order_detail_tushi_product_id foreign key(product_id) references product_tushi(id)
); 

数据库第十四次作业

——电子商城项目

任务三、对表中数据进行基本操作

所有字段批量插入用户表数据

phone	username	password	question	answer
13812345678	anne	annnepassword	favorite book	harry potter
18212345678	frank	Frankpassword	Favorite song	lonely
13212345678	alan	Alanpassword	First love	carry
13112345678	peter	Peterpassword	Who is your father	jack

 insert into user_tushi values
(13812345678,"anne","Annnepassword","favorite book","harry potter"),
(18212345678, "frank","Frankpassword","Favorite song","lonely"),
(13212345678,"alan","Alanpassword","First love","carry"),
(13112345678,"peter","Peterpassword","Who is your father","jack");

1.所有字段批量插入卖家信息表数据

id	phone	open_date	name	nickname
S_20200703_00001	13812345678	2020-07-03	ledin	ledin
S_20201030_00001	18212345678	2020-10-30	hla	hla

 insert into seller_tushi values
("S_20200703_00001",13812345678,"2020-07-03","ledin","ledin"),
("S_20201030_00001",18212345678,"2020-10-30","hal","hal");

2.指定字段批量插入买家信息表数据

id	phone	nickname	height	weight
B_20200422_00001	13212345678	funny shop	168	52
B_20200911_00001	13112345678	cool girl	165	47

 insert into buyer_tushi (id,phone,nickname,height,weight) values
("B_20200422_00001",13212345678,"funny shop",168,52),
("B_20200911_00001",13112345678,"cool girl",165,47);

3.指定字段批量插入地址表数据

id	buyer_id	contact_phone	detail_address
A_20201103_00004	B_20200422_00001	13212345678	gray street
A_20201103_00005	B_20200422_00001	13212345678	funny street
A_20201103_00006	B_20200422_00001	13212345678	frank street
A_20201103_00007	B_20200911_00001	13112345678	rock street

 insert into address_tushi (id,buyer_id,contact_phone,detail_address) values
("A_20201103_00004","B_20200422_00001",13212345678,"gray street"),
("A_20201103_00005","B_20200422_00001",13212345678,"funny street"),
("A_20201103_00006","B_20200422_00001",13212345678,"frank street"),
("A_20201103_00007","B_20200911_00001",13112345678,"rock street");

4.所有字段批量插入产品种类表数据

code	name
T00001	coat
T00002	shirt
T00003	shorts
T00004	pants
T00005	jeans
T00006	polo

 insert into product_type_tushi values
("T00001","coat"),
("T00002","shirt"),
("T00003","shorts"),
("T00004","pants"),
("T00005","jeans"),
("T00006","polo");

5.指定字段插入产品表数据

id	seller_id	type_id	name	picture	unit_price
P_20190102_00001	S_20200703_00001	T00003	blue shorts	p123.jpg	168.8

 insert into product_tushi (id,seller_id,type_id,name,picture,unit_price) values
("P_20190102_00001","S_20200703_00001","T00003","blue shorts","p123.jpg","168.8");

6.所有字段插入产品表数据

id	seller_id	type_id	name	picture	unit_price	quantity
P_20190102_00002	S_20200703_00001	T00001	coat	coat1.jpg	62.2	43

 insert into product_tushi values
("P_20190102_00002","S_20200703_00001","T00001","coat","coat1.jpg",62.2,43);

7.指定字段插入产品表数据

id	seller_id	type_id	name	unit_price
P_20190203_00001	S_20201030_00001	T00006	black polo	239.9

 insert into product_tushi (id,seller_id,type_id,name,unit_price) values
("P_20190203_00001","S_20201030_00001","T00006","black polo","239.9");

8.所有字段插入产品表数据

id	seller_id	type_id	name	picture	unit_price	quantity
P_20190203_00002	S_20201030_00001	T00005	jeans	12.jpg	198.8	23

 insert into product_tushi values
("P_20190203_00002","S_20201030_00001","T00005","jeans","12.jpg","198.8",23);

  

9.查看产品表所有字段数据

select * from product_tushi; 

10.订单表指定字段插入数据

id	seller_id	buyer_id	address_id
O_20201102_00001	S_20200703_00001	B_20200422_00001	A_20201103_00004

 insert into order_tushi (id,seller_id,buyer_id,address_id) values
("O_20201102_00001","S_20200703_00001","B_20200422_00001","A_20201103_00004");

11.订单详情表指定字段插入数据

order_id	product_id	purchase_quantity	discount_unit_price
O_20201102_00001	P_20190102_00001	1	150
O_20201102_00001	P_20190102_00002	2	40

 insert into order_detail_tushi (order_id,product_id,purchase_quantity,discount_unit_price) values
("O_20201102_00001","P_20190102_00001",1,150),
("O_20201102_00001","P_20190102_00002",2,40);

12.修改订单详情表中O_20201102_00001订单P_20190102_00002产品的采购数量为1 

 update order_detail_tushi set purchase_quantity=1
where product_id="P_20190102_00002";

13.查看O_20201102_00001订单的订单编号、产品编号、库存数量、采购数量、采购后数量（库存数量-采购数量）、产品单价、折后单价

 select a.order_id,a.product_id,a.purchase_quantity,a.discount_unit_price,
b.quantity-a.purchase_quantity,b.quantity,b.unit_price from order_detail_tushi a
inner join product_tushi b on a.product_id=b.id where a.order_id="O_20201102_00001";

14.修改产品表中库存数量为采购后数量

 update product_tushi set quantity=99 where unit_price=168.8;
update product_tushi set quantity=42 where unit_price=62.2;

15.根据订单号分组查看订单号、订单总价（sum(采购数量*产品单价)）、实付款（sum(采购数量*折扣单价)）

select a.order_id,sum(a.purchase_quantity*b.unit_price),sum(a.purchase_quantity*a.discount_unit_price)
from order_detail_tushi a inner join product_tushi b on a.product_id=b.id
group by a.order_id;

16.根据上述代码计算出的值修改订单表中O_20201102_00001订单的总价、实付款数据

 update order_tushi set total_price=231,actrual_payment=190 where id="O_20201102_00001";

17.查看O_20201102_00001订单的订单编号、店铺名称、买家昵称、详细地址、产品名称、采购数量、折后价格

select a.id,b.purchase_quantity,b.discount_unit_price,c.name,d.nickname,e.detail_address,f.name from seller_tushi c inner join product_tushi f on c.id=f.seller_id
inner join order_detail_tushi b on f.id=b.product_id
inner join order_tushi a on b.order_id=a.id
inner join address_tushi e on a.address_id=e.id
inner join buyer_tushi d on e.contact_phone=d.phone;

数据库第十四次作业

——电子商城项目

任务四、使用事务操作表中数据

1.开启事务

start transaction;

2.订单表指定字段插入数据

id	seller_id	buyer_id	address_id
O_20201102_00002	S_20201030_00001	B_20200911_00001	A_20201103_00007

insert into order_tushi(id,seller_id,buyer_id,address_id) values
("O_20201102_00002","S_20201030_00001","B_20200911_00001","A_20201103_00007");

3.订单详情表指定字段插入数据

order_id	product_id	purchase_quantity	discount_unit_price
O_20201102_00002	P_20190203_00001	1	230
O_20201102_00002	P_20190203_00002	2	190

 

4.查看O_20201102_00002订单的订单编号、产品编号、库存数量、采购数量、采购后数量（库存数量-采购数量）、产品单价、折后单价

 select a.order_id,a.product_id,a.purchase_quantity,a.discount_unit_price,
b.quantity-a.purchase_quantity,b.quantity,b.unit_price from order_detail_tushi a
inner join product_tushi b on a.product_id=b.id where a.order_id="O_20201102_00002";

5.修改产品表中库存数量为采购后数量

update product_tushi set quantity=99 where unit_price=239.9;

update product_tushi set quantity=21 where unit_price=198.8;

 

6.根据订单号分组查看订单总价（sum(采购数量*产品单价)）、实付款（sum(采购数量*折扣单价)）

select a.order_id,sum(a.purchase_quantity*b.unit_price),sum(a.purchase_quantity*a.discount_unit_price)
from order_detail_tushi a inner join product_tushi b on a.product_id=b.id
group by a.order_id;

7.根据上述代码计算出的值修改订单表中O_20201102_00002订单的总价、实付款数据

 update order_tushi set total_price=231,actrual_payment=719.7 where id="O_20201102_00002";

 

8.查看订单表所有字段数据

select * from order_tushi ;

9.查看订单详情表所有字段数据

 select * from order_detail_tushi ;

10.提交事务

commit;

11.开启事务

start transaction;

12.修改订单详情表中O_20201102_00002订单P_20190203_00002产品的折后单价为180

update order_detail_tushi set discount_unit_price=180 where order_id="O_20201102_00002" and product_id="P_20190203_00002"; 

 

13.修改订单详情表中O_20201102_00002订单P_20190203_00001产品的折后单价为200

 update order_detail_tushi set discount_unit_price=200 where order_id="O_20201102_00002" and product_id="P_20190203_00001";

 

14.根据订单号分组查看实付款（sum(采购数量*折扣单价)） 

select sum(a.purchase_quantity*a.discount_unit_price) from
order_detail_tushi a inner join product_tushi b on a.product_id=b.id
group by a.order_id;

15.根据上述代码计算出的值修改订单表中O_20201102_00002订单的实付款数据

update order_tushi set actrual_payment=560 where id="O_20201102_00002";

16.查看订单详情表所有字段数据

select * from order_detail_tushi;

17.回滚事务

rollback;

18.查看O_20201102_00002订单的订单编号、店铺名称、买家昵称、详细地址、产品名称、采购数量、折后价格

select a.id,b.purchase_quantity,b.discount_unit_price,c.name,d.nickname,e.detail_address,f.name from seller_tushi c inner join product_tushi f on c.id=f.seller_id
inner join order_detail_tushi b on f.id=b.product_id
inner join order_tushi a on b.order_id=a.id
inner join address_tushi e on a.address_id=e.id
inner join buyer_tushi d on e.contact_phone=d.phone
where b.order_id = "O_20201102_00002";

任务五、创建并使用视图

查看买家昵称、性别、联系方式、详细地址、是否默认地址

select a.nickname,a.gender,b.contact_phone,b.detail_address,b.is_default from address_tushi b inner join buyer_tushi a on b.buyer_id=a.id;

 

创建买家信息视图“view_buyer_info_姓名全拼”查看上述内容

create view view_buyer_info_tushi as select a.nickname,a.gender,b.contact_phone,b.detail_address,b.is_default from address_tushi b inner join buyer_tushi a on b.buyer_id=a.id;

 

查看买家信息视图买家昵称含有“h”的数据

select * from view_buyer_info_tushi where nickname like "%h%";

 

查看产品种类编码、产品种类名称、产品名称、单价、库存

 select a.code,a.name,b.id,b.unit_price,b.quantity from product_type_tushi a inner join product_tushi b on a.code=b.type_id;

 

创建产品信息视图“view_product_ info_姓名全拼”查看上述内容

create view view_product_info_tushi as select a.code,a.name,b.id,b.unit_price,b.quantity from
    ->  product_type_tushi a inner join
    -> product_tushi b on a.code=b.type_id;

 

查看订单详情表中的所有产品名称

select b.name from order_detail_tushi a inner join product_tushi b on a.product_id=b.id;

 

查看产品信息视图中已经有过订单销售记录的产品数据（子查询 in）

 select * from product_tushi where
    ->  type_id in (select code from view_product_info_tushi);

查看订单编号、店铺名称、买家昵称、详细地址、产品名称、采购数量、折后价格

mysql> select a.id,b.purchase_quantity,b.discount_unit_price,c.name,d.nickname,e.detail_address,f.name from seller_tushi c inner join product_tushi f on c.id=f.seller_id
    -> inner join order_detail_tushi b on f.id=b.product_id
    -> inner join order_tushi a on b.order_id=a.id
    ->  inner join address_tushi e on a.address_id=e.id
    ->  inner join buyer_tushi d on e.contact_phone=d.phone;

 

 

创建订单信息视图“view_order_ info_姓名全拼”查看上述内容

create view view_order_info_tushi as select a.id,b.purchase_quantity,b.discount_unit_price,c.name,d.nickname,e.detail_address,f.name a from seller_tushi c inner join
    -> product_tushi f on c.id=f.seller_id
    -> inner join order_detail_tushi b on f.id=b.product_id
    ->  inner join order_tushi a on b.order_id=a.id
    ->  inner join address_tushi e on a.address_id=e.id
    ->  inner join buyer_tushi d on e.contact_phone=d.phone;

 

查看订单信息视图中采购数量不为1的数据

 select * from view_order_info_tushi where  purchase_quantity!=1 ;

任务六、备份数据库

1.备份所有数据库，文件名为“all_姓名全拼.sql”

 

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