python数据库函数的封装调用

这里分享的python连接sql server 2005的代码,在google上有个开源的项目叫pymssql
项目地址:https://code.google.com/p/pymssql/

演示代码:
 

复制代码代码示例:
#!/bin/python
#
#site: www.jbxue.com
import pymssql  
conn = pymssql.connect(host='192.168.1.1',port='1433', user='user', password='password', database='mydatabase', as_dict=True)  
cur = conn.cursor()  
  
cur.execute('SELECT * FROM persons WHERE salesrep=%s', 'John Doe')  
for row in cur:  
    print "ID=%d, Name=%s" % (row['id'], row['name'])  
  
conn.close() 

说明:
第一行导入
第二个连接ip为192.168.1.1端口为1433的mydatabase数据库
第四行就是查询表

python遍历表中的数据,调用存储过程:
 

复制代码代码示例:
#!/bin/python
#
#site: www.jbxue.com
import pymssql  
conn = pymssql.connect(host='192.168.1.1','1433', user='user', password='password', database='mydatabase', as_dict=True)  
cur = conn.cursor()  
  
cur.callproc('findPerson', ('John Doe',))  
for row in cur:  
    print "ID=%d, Name=%s" % (row['id'], row['name'])  
  
conn.close() 

创建表:
 

复制代码代码示例:
#!/bin/python
#
#site: www.jbxue.com
import pymssql  
conn = pymssql.connect(host='SQL01', user='user', password='password', database='mydatabase') 
cur = conn.cursor()  
cur.execute('CREATE TABLE persons(id INT, name VARCHAR(100))')  
cur.executemany("INSERT INTO persons VALUES(%d, %s)", \  
    [ (1, 'John Doe'), (2, 'Jane Doe') ])  
conn.commit()  # you must call commit() to persist your data if you don't set autocommit to True  
  
cur.execute('SELECT * FROM persons WHERE salesrep=%s', 'John Doe')  
row = cur.fetchone()  
while row:  
    print "ID=%d, Name=%s" % (row[0], row[1])  
    row = cur.fetchone()  
  
# if you call execute() with one argument, you can use % sign as usual  
# (it loses its special meaning).  
cur.execute("SELECT * FROM persons WHERE salesrep LIKE 'J%'")  
  
conn.close() 

本文主要是Python操作SQLServer示例,包括执行查询更新操作(写入中文)。

需要注意的是:读取数据的时候需要decode('utf-8'),写数据的时候需要encode('utf-8'),这样就可以避免烦人的中文乱码或报错问题。

Python操作SQLServer需要使用pymssql模块,使用pip install pymssql安装即可。

此外代码中使用的封装MSSQL类是从网上搜索到的,直接用即可。

 

 

查看源代码
打印 帮助
1 # -*- coding:utf-8 -*-
2  
3 import pymssql
4  
5 class MSSQL:
6     def __init__(self,host,user,pwd,db):
7         self.host = host
8         self.user = user
9         self.pwd = pwd
10         self.db = db
11  
12     def __GetConnect(self):
13         if not self.db:
14             raise(NameError,"没有设置数据库信息")
15         self.conn = pymssql.connect(host=self.host,user=self.user,password=self.pwd,database=self.db,charset="utf8")
16         cur = self.conn.cursor()
17         if not cur:
18             raise(NameError,"连接数据库失败")
19         else:
20             return cur
21  
22     def ExecQuery(self,sql):
23         cur = self.__GetConnect()
24         cur.execute(sql)
25         resList = cur.fetchall()
26  
27         #查询完毕后必须关闭连接
28         self.conn.close()
29         return resList
30  
31     def ExecNonQuery(self,sql):
32         cur = self.__GetConnect()
33         cur.execute(sql)
34         self.conn.commit()
35         self.conn.close()
36  
37 ms = MSSQL(host="192.168.1.1",user="sa",pwd="sa",db="testdb")
38 reslist = ms.ExecQuery("select * from webuser")
39 for i in reslist:
40     print i
41  
42 newsql="update webuser set name='%s' where id=1"%u'测试'
43 print newsql
44 ms.ExecNonQuery(newsql.encode('utf-8'))

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