日期:2014-05-17 浏览次数:21129 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;