mysql
Linux
- 安装mysql： apt-get install mysql-server
- 安装python-mysql模块：apt-get install python-mysqldb
Windows
- 下载安装mysql
- python操作mysql模块：MySQL-python-1.2.3.win32-py2.7.exe 或 MySQL-python-1.2.3.win-amd64-py2.7.exe
- mysql图形界面：Navicat_for_MySQL
安装完成后，导入MySQLdb测试是否安装成功
数据库：
show databases;
use [databasename];
create database [name];
数据表：
show tables; create table students
(
id int not null auto_increment primary key,
name char(8) not null,
sex char(4) not null,
age tinyint unsigned not null,
tel char(13) null default "-"
);
增删改查:
insert into students(name,sex,age,tel) values('alex','man',18,'151515151')
delete from students where id =2;
update students set name = 'sb' where id =1;
select * from students
MySQLdb
#!/usr/bin/env python
#coding:utf-8 import MySQLdb '''
conn = MySQLdb.connect(host='127.0.0.1',user='root',passwd='1234',db='07day05db') cur = conn.cursor() reCount = cur.execute('insert into UserInfo(Name,Address) values(%s,%s)',('alex','usa')) conn.commit() cur.close()
conn.close() print reCount
''' '''
conn = MySQLdb.connect(host='127.0.0.1',user='root',passwd='1234',db='07day05db') cur = conn.cursor() reCount = cur.execute('delete from UserInfo') conn.commit() cur.close() conn.close() print reCount
''' '''
conn = MySQLdb.connect(host='127.0.0.1',user='root',passwd='1234',db='07day05db')
cur = conn.cursor() li =[
('alex','usa'),
('sb','usa'),
]
reCount = cur.executemany('insert into UserInfo(Name,Address) values(%s,%s)',li) conn.commit()
cur.close()
conn.close() print reCount
''' '''
conn = MySQLdb.connect(host='127.0.0.1',user='root',passwd='1234',db='07day05db')
cur = conn.cursor() reCount = cur.execute('update UserInfo set Name = %s',('alin',)) conn.commit()
cur.close()
conn.close() print reCount
''' '''
#fetchone/fetchmany(num)
conn = MySQLdb.connect(host='127.0.0.1',user='root',passwd='1234',db='07day05db')
cur = conn.cursor() reCount = cur.execute('select * from UserInfo') print cur.fetchone()
print cur.fetchone()
cur.scroll(-1,mode='relative')
print cur.fetchone()
print cur.fetchone()
cur.scroll(0,mode='absolute')
print cur.fetchone()
print cur.fetchone() cur.close()
conn.close() print reCount
''' #fetchall conn = MySQLdb.connect(host='127.0.0.1',user='root',passwd='1234',db='07day05db')
#cur = conn.cursor(cursorclass = MySQLdb.cursors.DictCursor)
cur = conn.cursor() reCount = cur.execute('select Name,Address from UserInfo') nRet = cur.fetchall() cur.close()
conn.close() print reCount
print nRet
for i in nRet:
print i[0],i[1]
注意：cur.lastrowid
真实开发中的mysqlhelper怎么写？