python学习--python 连接SQLServer数据库（两种方法）

1. python 学习、安装教程参照： http://www.runoob.com/python/python-tutorial.html

2. 集成开发环境 JetBrains PyCharm Community Edition 2018.3.4 x64

3. python 连接SQLServer数据库（两种方法）

# -*- coding:utf-8 -*-
#方法一
import pymssql
# server = "192.168.1.76"     # 连接服务器地址
# user = "sa"                 # 连接帐号
# password = "sa"             # 连接密码
#
# with pymssql.connect(server, user, password, "Contract_Dev",charset="utf8") as conn:
#     with conn.cursor(as_dict=True) as cursor:   # 数据存放到字典中
#         cursor.execute('SELECT * FROM contract_Statelog WHERE Id=%d',2)
#         for row in cursor:
#             print("Id=%d, contract_StateName=%s" % (row['Id'], row['contract_StateName']))
 
#方法二

class MSSQL:
    def __init__(self,host,user,pwd,db):
        self.host = host
        self.user = user
        self.pwd = pwd
        self.db = db

    def __GetConnect(self):
        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):
        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):
        cur = self.__GetConnect()
        cur.execute(sql)
        self.conn.commit()
        self.conn.close()

    def ExecNonQueryInsert(self, sql):
        cur = self.__GetConnect()
        cur.execute(sql)
        returnId=int(cur.lastrowid)
        # print(returnId)
        self.conn.commit()
        self.conn.close()
        return returnId

ms = MSSQL(host="192.168.1.76",user="sa",pwd="sa",db="Contract_Dev")

# reslist = ms.ExecQuery("select  TOP 3 *  from S_City")
# for i in reslist:
#     print (i)

newsql2="insert into contract_Statelog(contract_SignedId  ,contract_State  ,contract_StateName  ,CreateTime  ,sDesc) values(1,1,'qq','2019-1-1','desc')"
print (newsql2)
Id=ms.ExecNonQueryInsert(newsql2.encode('utf-8'))
print(Id)

# newsql="update contract_Statelog set contract_StateName='%s' where id=1"%u'测试'
# print (newsql)
# ms.ExecNonQuery(newsql.encode('utf-8'))

# newsql="delete from contract_Statelog  where id=1"
# print (newsql)
# ms.ExecNonQuery(newsql.encode('utf-8'))