更新了数据库部分相关知识

Author: jackfrued

Day36-40/code/SRS_create_and_init.sql

@@ -1,3 +1,20 @@
+"""
+-- 创建名为address的数据库
+create database address default charset utf8;
+
+-- 切换到address数据库
+use address;
+
+-- 创建联系人表tb_contacter
+create table tb_contacter
+(
+conid int auto_increment comment '编号',
+conname varchar(31) not null comment '姓名',
+contel varchar(15) default '' comment '电话',
+conemail varchar(255) default'' comment '邮箱',
+primary key (conid)
+);
+"""
 import pymysql
 
 INSERT_CONTACTER = """
@@ -154,9 +171,9 @@ def find_contacters(con):
 
 
 def main():
-    con = pymysql.connect(host='localhost', port=3306,
+    con = pymysql.connect(host='120.77.222.217', port=3306,
                           user='root', passwd='123456',
-                          db='contact', charset='utf8',
+                          db='address', charset='utf8',
                           autocommit=True,
                           cursorclass=pymysql.cursors.DictCursor)
     while True:

Day36-40/code/contact/main.py

@@ -1,10 +1,10 @@
-drop database if exists Library;
+drop database if exists library;
 
-create database Library default charset utf8;
+create database library default charset utf8;
 
-use Library;
+use library;
 
-create table TbBook
+create table tb_book
 (
 bookid integer primary key auto_increment,
 title varchar(100) not null,
@@ -16,16 +16,16 @@ lenddate datetime,
 lendcount integer default 0
 );
 
-insert into TbBook (title, author, publisher, price, lendcount) values ('Java核心技术(卷1)', '凯 S.霍斯特曼', '机械工业出版社', 98.2, 102);
-insert into TbBook (title, author, publisher, price, lendcount) values ('Java编程思想', '埃史尔', '机械工业出版社', 86.4, 87);
-insert into TbBook (title, author, publisher, price, lendcount) values ('深入理解Java虚拟机', '周志明', '机械工业出版社', 64.4, 32);
-insert into TbBook (title, author, publisher, price, lendcount) values ('Effective Java中文版(第2版) ', '埃史尔', '机械工业出版社', 36.8, 200);
-insert into TbBook (title, author, publisher, price, lendcount) values ('数据结构与算法分析:Java语言描述(原书第3版)', '马克·艾伦·维斯', '机械工业出版社', 51.0, 15);
-insert into TbBook (title, author, publisher, price, lendcount) values ('Java 8实战', '厄马', '人民邮电出版社', 56.8, 25);
-insert into TbBook (title, author, publisher, price, lendcount) values ('重构:改善既有代码的设计', '马丁·福勒', '人民邮电出版社', 53.1, 99);
-insert into TbBook (title, author, publisher, price, lendcount) values ('代码大全(第2版)', '史蒂夫•迈克康奈尔', '电子工业出版社', 53.1, 99);
-insert into TbBook (title, author, publisher, price, lendcount) values ('程序员修炼之道:从小工到专家', '亨特, 托马斯', '电子工业出版社', 45.4, 50);
-insert into TbBook (title, author, publisher, price, lendcount) values ('代码整洁之道', '马丁', '人民邮电出版社', 45.4, 30);
-insert into TbBook (title, author, publisher, price, lendcount) values ('设计模式 可复用面向对象软件的基础', 'Erich Gamma, Richard Helm', '机械工业出版社', 30.2, 77);
-insert into TbBook (title, author, publisher, price, lendcount) values ('设计模式之禅(第2版)', '秦小波', '机械工业出版社', 70.4, 100);
+insert into tb_book (title, author, publisher, price, lendcount) values ('Java核心技术(卷1)', '凯 S.霍斯特曼', '机械工业出版社', 98.2, 102);
+insert into tb_book (title, author, publisher, price, lendcount) values ('Java编程思想', '埃史尔', '机械工业出版社', 86.4, 87);
+insert into tb_book (title, author, publisher, price, lendcount) values ('深入理解Java虚拟机', '周志明', '机械工业出版社', 64.4, 32);
+insert into tb_book (title, author, publisher, price, lendcount) values ('Effective Java中文版(第2版) ', '埃史尔', '机械工业出版社', 36.8, 200);
+insert into tb_book (title, author, publisher, price, lendcount) values ('数据结构与算法分析:Java语言描述(原书第3版)', '马克·艾伦·维斯', '机械工业出版社', 51.0, 15);
+insert into tb_book (title, author, publisher, price, lendcount) values ('Java 8实战', '厄马', '人民邮电出版社', 56.8, 25);
+insert into tb_book (title, author, publisher, price, lendcount) values ('重构:改善既有代码的设计', '马丁·福勒', '人民邮电出版社', 53.1, 99);
+insert into tb_book (title, author, publisher, price, lendcount) values ('代码大全(第2版)', '史蒂夫•迈克康奈尔', '电子工业出版社', 53.1, 99);
+insert into tb_book (title, author, publisher, price, lendcount) values ('程序员修炼之道:从小工到专家', '亨特, 托马斯', '电子工业出版社', 45.4, 50);
+insert into tb_book (title, author, publisher, price, lendcount) values ('代码整洁之道', '马丁', '人民邮电出版社', 45.4, 30);
+insert into tb_book (title, author, publisher, price, lendcount) values ('设计模式 可复用面向对象软件的基础', 'Erich Gamma, Richard Helm', '机械工业出版社', 30.2, 77);
+insert into tb_book (title, author, publisher, price, lendcount) values ('设计模式之禅(第2版)', '秦小波', '机械工业出版社', 70.4, 100);
 

Day36-40/code/contact/test01.py

@@ -1,6 +1,8 @@
-drop database if exists Shop;
-create database Shop default charset utf8;
-use Shop;
+drop database if exists shop;
+create database shop default charset utf8;
+	
+use shop;
+
 drop table if exists tb_goods;
 create table tb_goods
 (
@@ -10,6 +12,7 @@ gprice decimal(10,2) not null,
 gimage varchar(255),
 primary key (gid)
 );
+
 insert into tb_goods values 
 (default, '乐事（Lay’s）无限薯片', 8.2, 'images/lay.jpg'),
 (default, '旺旺 仙贝 加量装 540g', 18.5, 'images/wang.jpg'),

Day36-40/code/contact/test02.py

@@ -1,5 +1,3 @@
-use SRS;
-
 -- 查询所有学生信息
 
 -- 查询所有课程名称及学分(投影和别名)