Home > Backend Development > Python Tutorial > python operation database data table operation

python operation database data table operation

巴扎黑
Release: 2017-06-23 15:13:16
Original
1971 people have browsed it

Data table:

Data type:

Three forms of help :

Input in cmd: help The topic word you want to help, or? The topic word you want to help or \h The topic word you want to help.


##Creation of data table:


CREATE database IF NOT exists zbltest2 default character set 'utf8';USE zbltest2;CREATE TABLE IF NOT EXISTS `user`(
id SMALLINT,
username VARCHAR(20)
) ENGINE=INNODB CHARSET=UTF8;
Copy after login

 1 #SELECT NOW(); 2 # SELECT * FROM student 3 -- 注释 alter 4 CREATE database IF NOT exists zbltest2 default character set 'utf8'; 5 USE zbltest2; 6 CREATE TABLE IF NOT EXISTS `user`( 7 id SMALLINT, 8 username VARCHAR(20) 9 ) ENGINE=INNODB CHARSET=UTF8;10 11 -- 新闻分类12 CREATE TABLE IF NOT EXISTS cms_cate(13 id TINYINT,14 cateName varchar(50),15 cateDesc varchar(200)16 )ENGINE=MyISAM CHARSET=UTF8;17 18 #创建新闻表19 CREATE TABLE IF NOT EXISTS cms_news(20 id INT,21 title VARCHAR(50),22 content TEXT,23 pubTime INT,24 clickNum INT,25 isTop TINYINT(1) COMMENT '0代表不置顶,1代表置顶'26 )ENGINE=INNODB CHARSET=UTF8;
Copy after login
Insert:

Insert data into student through sql command:

 1 CREATE database IF NOT exists zbltest1 default character set 'utf8'; 2 USE zbltest1; 3 #下面的`student`是反引号,在数字1左边和波浪线在一个按键上,目的是为了不和sql自带关键字重合 4 CREATE TABLE IF NOT EXISTS `student`( 5 id INT, 6 `name` VARCHAR(45), 7 gender VARCHAR(45) 8 ) ENGINE=INNODB CHARSET=UTF8; 9 INSERT student values(1,'ZBL1','MAN');10 INSERT student values(2,'ZBL2','MAN');11 INSERT student values(3,'ZBL3','MAN');12 select * FROM student;
Copy after login

The data structure can be seen through mysql workbench.

The following connects and controls mysql through python:

 1 import pymysql 2 try: 3 # 获取一个数据库连接,注意如果是UTF-8类型的,需要制定数据库 4     conn=pymysql.connect(host='localhost',user='root',passwd='root',db='zbltest1',port=3306,charset='utf8') 5     cur=conn.cursor()#获取一个游标 6     cur.execute("INSERT student VALUES ('4', 'zbl4', 'man')") 7     cur.execute('select * from student') 8     # data=cur.fetchall() 9     for d in cur :10 11         #注意int类型需要使用str函数转义12         print("ID: "+str(d[0])+'  名字: '+d[1]+"  性别: "+d[2])13         print("row_number:" , (cur.rownumber) )14         #print('hello')15 16     cur.close()#关闭游标17     conn.close()#释放数据库资源18 except  Exception :print("发生异常")
Copy after login
To run the following python code, you need to install the pymysql module first, which can be done on the command line (i.e. cmd) Enter: pip install pymysql

Haha, finally connected. Python controls the database by passing SQL statements to the database management system through functions.

Note that python must use 3.4 and mysql must use 5.7.

##

The above is the detailed content of python operation database data table operation. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template