python怎么連接sql server？python操作數(shù)據(jù)庫介紹！

# server默認(rèn)為127.0.0.1，如果打開了TCP動(dòng)態(tài)端口的需要加上端口號，如'127.0.0.1:1433'
# user默認(rèn)為sa
# password為自己設(shè)置的密碼
# database為數(shù)據(jù)庫名字
server = '127.0.0.1'
user = "sa"
password = "123456"
database = "pubs"
conn = pymssql.connect(server, user, password, database)
# 可簡化為conn = pymssql.connect(host='localhost', user='sa', password='123456', database='pubs')
cursor = conn.cursor()
cursor.execute('SELECT * FROM titles')
print( cursor.fetchall() ) 

# 如果用pandas讀取數(shù)據(jù)庫
import pymssql
import pandas as pd
conn = pymssql.connect('IP地址','賬號','密碼','數(shù)據(jù)庫')
sql_1 = "SELECT Id,creat_time from 表名"
#利用pandas直接獲取數(shù)據(jù)"
data = pd.read_sql(sql_1, conn)
conn.close()
print(data)

#coding=utf-8 
# sqlserver的連接
import pymssql

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

    def __GetConnect(self):
        """
        得到連接信息
        返回: conn.cursor()
        """
        if not self.db:
            raise(NameError,"沒有設(shè)置數(shù)據(jù)庫信息")
        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,"連接數(shù)據(jù)庫失敗")
        else:
            return cur

    def ExecQuery(self,sql):
        """
        執(zhí)行查詢語句
        返回的是一個(gè)包含tuple的list，list的元素是記錄行，tuple的元素是每行記錄的字段

        """
        cur = self.__GetConnect()
        cur.execute(sql)
        resList = cur.fetchall()

        #查詢完畢后必須關(guān)閉連接
        self.conn.close()
        return resList

    def ExecNonQuery(self,sql):
        """
        執(zhí)行非查詢語句

        調(diào)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():
	# host默認(rèn)為127.0.0.1，如果打開了TCP動(dòng)態(tài)端口的需要加上端口號，如'127.0.0.1:1433'
    # user默認(rèn)為sa
    # pwd為自己設(shè)置的密碼
    # db為數(shù)據(jù)庫名字
    ms = MSSQL(host='127.0.0.1',user="sa",pwd="123456",db="pubs")
    resList = ms.ExecQuery("SELECT * FROM titles")
    print(resList)

if __name__ == '__main__':
    main()