MERGE INTO user_member_info a
USING ( select min(UP.created) as cre,min(up.shop_no) as shop_no,up.memberid as memberid 
       from user_platform_relation up,
       ( select memberid as mid,min(created) as cre 
            from user_platform_relation 
            group by memberid) um
      where up.created = um.cre and up.memberid = um.mid
      group by up.memberid) b
ON (a.id = b.memberid
    )
WHEN MATCHED THEN UPDATE SET a.created = b.cre,a.shop_no = b.shop_no,a.modified_time = sysdate
where  a.shop_no is null;