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USE [msdb]GO/****** Object:  Job [数据库备份作业]    Script Date: 2020/1/4 14:25:45 ******/BEGIN TRANSACTIONDECLARE @ReturnCode INTSELECT @ReturnCode = 0/****** Object:  JobCategory [Database Maintenance]    Script Date: 2020/1/4 14:25:45 ******/IF NOT EXISTS (SELECT name FROM msdb.dbo.syscategories WHERE name=N'Database Maintenance' AND category_class=1)BEGINEXEC @ReturnCode = msdb.dbo.sp_add_category @class=N'JOB', @type=N'LOCAL', @name=N'Database Maintenance'IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollbackENDDECLARE @jobId BINARY(16)EXEC @ReturnCode =  msdb.dbo.sp_add_job @job_name=N'数据库备份作业', 		@enabled=1, 		@notify_level_eventlog=0, 		@notify_level_email=0, 		@notify_level_netsend=0, 		@notify_level_page=0, 		@delete_level=0, 		@description=N'无描述。', 		@category_name=N'Database Maintenance', 		@owner_login_name=N'WIN-***********\******', @job_id = @jobId OUTPUTIF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback/****** Object:  Step [执行备份操作]    Script Date: 2020/1/4 14:25:45 ******/EXEC @ReturnCode = msdb.dbo.sp_add_jobstep @job_id=@jobId, @step_name=N'执行备份操作', 		@step_id=1, 		@cmdexec_success_code=0, 		@on_success_action=1, 		@on_success_step_id=0, 		@on_fail_action=2, 		@on_fail_step_id=0, 		@retry_attempts=0, 		@retry_interval=0, 		@os_run_priority=0, @subsystem=N'TSQL', 		@command=N'-- 数据库备份指令declare @dt date,@md int,@sql varchar(max),@name varchar(100),@vdt varchar(10),@dbn varchar(20),@source varchar(max)create table #bak_db(dbname varchar(50))insert into #bak_db(dbname) values(''main_db'',''product_db'') -- 需要进行自动备份的数据库set @dt = getdate()set @vdt = convert(varchar,year(@dt))+''_''+convert(varchar,month(@dt))+''_''+convert(varchar,day(@dt))set @md = datediff(d,''2020-1-1'',@dt)%7   -- 这里的日期设置为第一次运行脚本的日期，固定值if @md=0	-- 每7天完整备份一次	begin		-- 完整备份		declare cur cursor for select dbname from #bak_db		open cur		fetch next from cur into @dbn		while @@fetch_status=0			begin				set @name = @dbn+''_full_''+@vdt				set @sql = ''				BACKUP DATABASE [''+@dbn+''] TO  				DISK = N''''E:\bak\''+@name+''.bak'''' 				WITH  RETAINDAYS = 16, 				NOFORMAT, NOINIT,  				NAME = N''''''+@name+'''''', 				SKIP, REWIND, NOUNLOAD,  STATS = 10				''				exec(@sql)				fetch next from cur into @dbn			end		close cur		deallocate cur		-- 完整备份完成后，删除过期的历史备份，这里以两周为过期时间		declare @olddate datetime		select @olddate = dateadd(d,-14,getdate())		EXECUTE master.dbo.xp_delete_file 0,N''E:\bak'',N''bak'',@olddate,1	endelse	begin		-- 差异备份		declare cur cursor for select match from rm_db.dbo.regexmatches(@source,''[^,]+'')		open cur		fetch next from cur into @dbn		while @@fetch_status=0			begin				set @name = @dbn+''_diff_''+@vdt				set @sql = ''				BACKUP DATABASE [''+@dbn+''] TO  				DISK = N''''E:\bak\''+@name+''.bak'''' 				WITH  DIFFERENTIAL ,  RETAINDAYS = 16, 				NOFORMAT, NOINIT,  				NAME = N''''''+@name+'''''', 				SKIP, REWIND, NOUNLOAD,  STATS = 10				''				exec(@sql)				fetch next from cur into @dbn			end		close cur		deallocate cur	end', 		@database_name=N'master', 		@flags=0IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollbackEXEC @ReturnCode = msdb.dbo.sp_update_job @job_id = @jobId, @start_step_id = 1IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollbackEXEC @ReturnCode = msdb.dbo.sp_add_jobserver @job_id = @jobId, @server_name = N'(local)'IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollbackCOMMIT TRANSACTIONGOTO EndSaveQuitWithRollback:    IF (@@TRANCOUNT > 0) ROLLBACK TRANSACTIONEndSave:GO

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