python sqlite3插入测试

python sqlite3插入测试代码，默认情况下需要提交事务的，如果要设置con.isolation_level
= None则每次自动提交事务：
当插入1000条数据时，自己提交事务用了，0.11s;程序自动提交事务用了1分半钟。
 

 

#!/usr/bin/python

#-*- coding: utf-8 -*-

import sqlite3, datetime

def insertData(n):

for i in range(n):

cur.execute('INSERT INTO foo (o_id, fruit, veges) VALUES(NULL, "apple", "broccoli")')

con.commit()

def deleteData():

cur.execute('delete from foo')

print 'delete over!'

con.commit()

def createTable():

cur.execute('CREATE TABLE foo (o_id INTEGER PRIMARY KEY, fruit VARCHAR(20), veges VARCHAR(30))')

con = sqlite3.connect("my.db")

#这个就是事务隔离级别，默认是需要自己commit才能修改数据库，置为None则自动每次修改都提交

#con.isolation_level = None

cur = con.cursor()

insert_begin = datetime.datetime.now()

#创建表格

#createTable()

#插入数据

insertData(1000000)

#deleteData()

insert_end = datetime.datetime.now()

print "insert data spend time :%s"%(insert_end-insert_begin)

print 'last id: %s'%cur.lastrowid

 

转自：http://blog.chinaunix.net/uid-25979788-id-2955840.html