时间:2021-07-01 10:21:17 帮助过:849人阅读
python 使用pymssql连接sql server数据库
import pymssql
class MSSQL:
"""
对pymssql的简单封装
pymssql库,该库到这里下载:http://www.lfd.uci.edu/~gohlke/pythonlibs/#pymssql
使用该库时,需要在Sql Server Configuration Manager里面将TCP/IP协议开启
用法:
"""
def __init__(self,host,user,pwd,db):
self.host = host
self.user = user
self.pwd = pwd
self.db = db
def __GetConnect(self):
"""
得到连接信息
返回: conn.cursor()
"""
if not self.db:
raise(NameError,"没有设置数据库信息")
self.conn = pymssql.connect(host=self.host,user=self.user,password=self.pwd,database=self.db,charset="utf8")
cur = self.conn.cursor()
if not cur:
raise(NameError,"连接数据库失败")
else:
return cur
def ExecQuery(self,sql):
"""
执行查询语句
返回的是一个包含tuple的list,list的元素是记录行,tuple的元素是每行记录的字段
调用示例:
ms = MSSQL(host="localhost",user="sa",pwd="123456",db="PythonWeiboStatistics")
resList = ms.ExecQuery("SELECT id,NickName FROM WeiBoUser")
for (id,NickName) in resList:
print str(id),NickName
"""
cur = self.__GetConnect()
cur.execute(sql)
resList = cur.fetchall()
#查询完毕后必须关闭连接
self.conn.close()
return resList
def ExecNonQuery(self,sql):
"""
执行非查询语句
调用示例:
cur = self.__GetConnect()
cur.execute(sql)
self.conn.commit()
self.conn.close()
"""
cur = self.__GetConnect()
cur.execute(sql)
self.conn.commit()
self.conn.close()
def main():
## ms = MSSQL(host="localhost",user="sa",pwd="123456",db="PythonWeiboStatistics")
## #返回的是一个包含tuple的list,list的元素是记录行,tuple的元素是每行记录的字段
## ms.ExecNonQuery("insert into WeiBoUser values('2','3')")
ms = MSSQL(host="localhost",user="sa",pwd="123456",db="PythonWeiboStatistics")
resList = ms.ExecQuery("SELECT id,weibocontent FROM WeiBo")
for (id,weibocontent) in resList:
print str(weibocontent).decode("utf8")
if __name__ == '__main__':
main()
注意事项:
使用pymssql进行中文操作时候可能会出现中文乱码,我解决的方案是:
文件头加上 #coding=utf8
sql语句中有中文的时候进行encode
insertSql = "insert into WeiBo([UserId],[WeiBoContent],[PublishDate]) values(1,'测试','2012/2/1')".encode("utf8")
连接的时候加入charset设置信息
pymssql.connect(host=self.host,user=self.user,password=self.pwd,database=self.db,charset="utf8")