Python学习笔记--数据库的迁移

最近得到了一个任务，让我将旧的数据库 数据迁移到新的数据库

这里用Python实现了思路  大致思路是这样 根据具体需要去更改代码‘

# -*- coding: UTF-8 -*-

import MySQLdb as mdb

conn = mdb.connect(

host="127.0.0.1",

port=3306,

user = 'root',

passwd="1234",

db="test"

)

conn2 = mdb.connect(

host="127.0.0.1",

port=3306,

user='root',

passwd="1234",

db="test",#new databases1 to save conetent

)

conn3 = mdb.connect(

host="127.0.0.1",

port=3306,

user='root',

passwd="1234",# new databases2 to save title

db="test"

)

#to get all data num

cur = conn.cursor()

sql = "select * from ...."

aa = cur.execute(sql)#check information

num = aa.fetchmany(aa)

for i in range(0,num):

# part one  to get content

cur = conn.cursor()

sql = "select * from ...."

aa = cur.execute(sql)  # check information

print aa

# to get data num

num = aa.fetchmany(aa)

# part two to post content

cur2 = conn.cursor()

sql2 = "insert into ... values(%s,%s,%s,%s)"

cur2.execute(sql2, ('1', '2', '3', '4'))

# part three to post title

cur3 = conn.cursor()

sql3 = "insert into ... values(%s,%s,%s,%s)"

cur3.execute(sql3, ('1', '2', '3', '4'))

cur.close()

conn.commit()

conn.close()

cur2.close()

conn2.commit()

conn2.close()

cur3.close()

conn3.commit()

conn3.close()