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分享update flow02.usr_user a set a.user_mobile3 = (select b.usercode from usruser b where a.user_email=b.useremail)
where exists (select null from usruser where a.user_email=usruser.useremail),求解决,很急!update flow02.usr_user a set a.user_mobile3 = (select b.usercode from usruser b where a.user_email=b.useremail and rownum=1)
where exists (select null from usruser where a.user_email=usruser.useremail)