• python 使用pymssql连接sql server数据库


    python 使用pymssql连接sql server数据库

     
    #coding=utf-8 
    #!/usr/bin/env python
    #-------------------------------------------------------------------------------
    # Name: pymssqlTest.py
    # Purpose: 测试 pymssql库,该库到这里下载:http://www.lfd.uci.edu/~gohlke/pythonlibs/#pymssql
    #
    # Author: scott
    #
    # Created: 04/02/2012
    #-------------------------------------------------------------------------------

    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")
     
     
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  • 原文地址:https://www.cnblogs.com/wt11/p/6141157.html
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