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
with u1 as(select id,case when age<25 or age is null then '25岁以下' when age >=25 then'25岁及以上' end age_cut from user_profile) select age_cut,count(id) from u1 group by age_cut
