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);

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