update dede_archives,dede_addonarticle set dede_archives.litpic=substring(dede_addonarticle.body,INSTR(dede_addonarticle.body,'src=&;')+5,100)where dede_archives.id=dede_addonarticle.aid;
update dede_archives set litpic=substring(litpic,1,instr(litpic,'&;')-1);