python 脚本备份mssql数据库并删除数据库

一、实现脚本

# -*- coding=utf-8 -*- 

import pyodbc
from datetime import datetime
import pymssql
import os
import decimal

class SQLServer:
    def __init__(self,server,user,password,database,autocommit):
        self.server = server
        self.user = user
        self.password = password
        self.database = database
        self.autocommit = autocommit

    def __GetConnect(self):
        if not self.database:
            raise(NameError,"没有数据库信息")
        self.conn = pymssql.connect(server=self.server,user=self.user,password=self.password,database=self.database,autocommit=self.autocommit)
        cur = self.conn.cursor()
        if not cur:
            raise(NameError,"连接数据库失败")
        else:
            return cur
    
    def backDb(self,database,backpath):
        cur = self.__GetConnect()
        backPath = backpath + database + datetime.now().strftime("%Y%m%d") + '.bak'
        sql = "BACKUP DATABASE [{0}] TO DISK = N'{1}'".format(database,backPath)
        cur.execute(sql)
        self.conn.close()

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

def main():
    msg = SQLServer(server="192.168.2.190",user="sa",password="P123",database="master",autocommit=True)
    msg.backDb("wanghz","D:\\backup\\")
    msg.ExecQuery("exec wanghz")


if __name__ == "__main__":
    main(

二、删除库存储过程。在master上创建，kill掉连接的数据库链接

USE [master]
GO
/****** Object:  StoredProcedure [dbo].[wanghz]    Script Date: 11/07/2019 15:20:29 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

ALTER procedure [dbo].[wanghz] 
AS
declare @dbname sysname
set @dbname='wanghz' 
declare @s varchar(50)
declare tb cursor local for
select s='kill '+cast(spid as varchar)
from master..sysprocesses
where dbid=db_id(@dbname) 
 
open tb
fetch next from tb into @s 
 
begin
exec(@s)
fetch next from tb into @s
end
close tb
deallocate tb
exec('drop database ['+@dbname+']')