python 2.7 操作mysql数据库 实例

create table msg(
id int primary key auto_increment,
title varchar(20),
name varchar(60),
content varchar(1000)
)charset utf8;

insert into msg (title,name,content) values
('test01','zz01','test content01'),
('test02','zz02','test content02'),
('test03','zz03','test content03'),
('test04','zz04','test content04'),
('test05','zz05','test content05');

update msg set content='test05' where name='zz05';

select * from msg;
delete from msg where name='zz05';
select * from msg;
import MySQLdb
conn=MySQLdb.connect(host='127.0.0.1',user='root',passwd='123456',db='mydb',port=3306,charset='utf8')
cur=conn.cursor()
cur.execute("insert into msg (title,name,content) values ('python','zz','test mysql insert')")
conn.commit()
sql='insert into msg(title,name,content) values (%s,%s,%s)'
cur.executemany(sql,[\
('test05','zz05','test content05'),\
('test06','zz06','test content06'),\
])
conn.commit()

create table user(
id int primary key auto_increment,
name varchar(10),
gender varchar(10)
)charset utf8;

import random
sql="insert into user (name,gender) values"
for i in range(100):
sql+="('user"+str(i)+"',"+str(random.randint(0,1))+"),"

print sql
sql=sql[:-1]
print sql
cur.execute(sql)
100L
conn.commit()
cur.execute("select * from user")
100L
cur.fetchall()
cur.fetchall()

cur.scroll(1,mode='absolute')
cur.fetchmany(1)
2L user1
cur.scroll(1,mode='relative')
cur.fetchmany(1)
user3
cur.scroll(0,mode='absolute')
row=cur.fetchone()
while row:
print row[2]
row=cur.fetchone()
try:
cur.execute("drop table if exits user")
conn.commit()
except:
conn.rollback()
cur.close()
conn.close()