题解 | #计算25岁以上和以下的用户数量#
计算25岁以上和以下的用户数量
https://www.nowcoder.com/practice/30f9f470390a4a8a8dd3b8e1f8c7a9fa
select
case when age<25 or age is null then "25岁以下"
when age>=25 then "25岁及以上"
end as age_cut, count(*) number
from user_profile
group by age_cut;
case when age<25 or age is null then "25岁以下"
when age>=25 then "25岁及以上"
end as age_cut, count(*) number
from user_profile
group by age_cut;