python_MySQLdb

获取列和值

#!/bin/env python
#coding: utf:8
import MySQLdb

conn = MySQLdb.connect(host="localhost",user="root",passwd="coship",db="pythondb")
cur = conn.cursor()  #获取游标,打印时只有value
cur = conn.cursor(cursorclass = MySQLdb.cursors.DictCursor) #打印时是字典 {列:value}

resgeshu = cur.execute("select * from students")   #获取select 个数
data = cur.fetchall()  #
print data

cur.close()
conn.close()

批量插入

#!/bin/env python
#coding: utf:8
import MySQLdb
conn = MySQLdb.connect(host="localhost",user="root",passwd="coship",db="pythondb")
cur = conn.cursor() #列:value
parm = [
	('3','hello'),
	('4','word'),
]
sql = "insert into students(id,name) values(%s,%s)"
recount = cur.executemany(sql,parm)
conn.commit()
print  cur.lastrowid  #获取最后自增序列
#data = cur.fetchall()
cur.close()
conn.close()
print recount
#print data

记录偏移

#!/bin/env python
#coding: utf:8
import MySQLdb

conn = MySQLdb.connect(host="localhost",user="root",passwd="coship",db="pythondb")
cur = conn.cursor()
#cur = conn.cursor(cursorclass = MySQLdb.cursors.DictCursor) #列:value

resgeshu = cur.execute("select * from students")   #获取select 个数

data = cur.fetchone()  #刚执行获取第一条记录,再次调用就获取下一条
#cur.scroll(-1,mode='relative') #实际位置后退一条记录
print data

data = cur.fetchone()  #
print data
cur.scroll(-1,mode='relative') #实际位置后退一条记录
#cur.scroll(0,mode='absolute') #回到开头

data = cur.fetchone()  #
print data


cur.close()
conn.close()

#-*- coding:utf-8 -*- 
#mysqldb     
import time, MySQLdb, sys   
        
#connect  
conn = MySQLdb.connect(host="localhost",user="root",passwd="coship",db="pythondb")  
cursor = conn.cursor()     
        
#add 
sql = "insert into user(name,age) values(%s,%s)"    
param = ("tom",str(20))     
n = cursor.execute(sql,param)     
print n     
        
#更新     
sql = "update user set name=%s where Id=9001"    
param = ("ken")     
n = cursor.execute(sql,param)     
print n     
 
#查询     
n = cursor.execute("select * from user")     
for row in cursor.fetchall():     
    for r in row:     
        print r,    
print "" 
 
 
#删除     
sql = "delete from user where name=%s"    
param =("ted")     
n = cursor.execute(sql,param)     
print n     
cursor.close()     
        
#关闭     
conn.close() 

python连接mssql数据库编码问题:

python一直对中文支持的不好,最近老遇到编码问题,而且几乎没有通用的方案来解决这个问题,但是对常见的方法都试过之后,发现还是可以解决的,下面总结了常用的支持中文的编码问题(这些方法中可能其中一个就能解决问题,也可能是多个组合)。

1. 首先,要保证文件的开头要加上编码设置来说明文件的编码
#encoding=utf-8
2. 然后,在连接数据的连接参数里加上字符集说明查询出的结果的编码,这个不加的后果可能是查询出的汉字字符都是问号
conn=pymssql.connect(server='.',user='', password='',database='MyTest',charset='utf8')
3. 设置python系统的默认编码(对于文件来说,这招几乎屡试不爽,呵呵~~import sys
reload(sys)
sys.setdefaultencoding('utf8')
posted @ 2017-12-27 13:40  Sinjon_Liu  阅读(191)  评论(0编辑  收藏  举报