日期:2014-05-17 浏览次数:21135 次
select a.id, a.c1, b.c2
  from (select id, max(c1) c1
          from (select id,
                       wm_concat(col) over(partition by id order by col) c1
                  from (select id, col from t1 order by id, col))
         group by id) a,
       (select id, max(c2) c2
          from (select id,
                       wm_concat(col) over(partition by id order by col) c2
                  from (select id, col from t2 order by id, col))
         group by id) b
 where a.id = b.id
   and c1 <> c2;