/****** Script for SelectTopNRows command from SSMS  ******/
update [dongsheng2017ceshi].[dbo].[t_op_seae_ftpfile_bc] 
set [t_op_seae_ftpfile_bc].lastmodi_date=  v2.mddate  
from
( 
select 
dateadd(hour,8,
 CONVERT(DATETIME,substring (mddate,1,4)+'-'+SUBSTRING(mddate,5,2)+'-'+SUBSTRING(mddate,7,2)
+ ' ' +SUBSTRING(mddate,9,2) + ':'+ SUBSTRING(mddate,11,2)+ ':'+ SUBSTRING(mddate,13,2) ) 
) as mddate ,ID as id  

from  


(
SELECT  
     SUBSTRING([ftp_filename],len([ftp_filename])-17,14 )  as  mddate,
      [ID]
 
  FROM [dongsheng2017ceshi].[dbo].[t_op_seae_ftpfile_bc] t where t.remark=''
  ) v
  )
  v2 where  t_op_seae_ftpfile_bc .id=v2.id
  
  select dateadd(hour,2,GETDATE()),getdate()