2017-11-05 6 views

답변

0

당신은 윈도우 기능이 작업을 수행 할 수 있습니다

select t.* 
from (select t.*, 
      min(d) over (partition by a) as min_d, 
      max(d) over (partition by a) as max_d 
     from t 
    ) t 
where min_d <> max_d;