简介
having 的使用考察
select number from
grade
group by number
having count(number) >= 3;
出现三次以上相同积分的情况
Hope is a good thing,maybe the best of things,and no good thing ever dies.----------- Andy Dufresne
having 的使用考察
select number from
grade
group by number
having count(number) >= 3;