SQL语句：用count求group by分组的个数
1个回答
展开全部
select
count(*)
num,sid
into
#a
from
person
group
by
sid
select
count(*)
from
#a
或者
select
count(*)
from
(select
count(*)
num,sid
from
person
group
by
sid
)
count(*)
num,sid
into
#a
from
person
group
by
sid
select
count(*)
from
#a
或者
select
count(*)
from
(select
count(*)
num,sid
from
person
group
by
sid
)
已赞过
已踩过<
评论
收起
你对这个回答的评价是？
推荐律师服务：
若未解决您的问题，请您详细描述您的问题，通过百度律临进行免费专业咨询
