题解 | #查看不同年龄段的用户明细#
查看不同年龄段的用户明细
https://www.nowcoder.com/practice/ae44b2b78525417b8b2fc2075b557592
select
device_id,
gender,
case
when age >= 20
and age < 24 then '20-24岁'
when age >= 25 then '25岁及以上'
when age is null then '其他'
end age_cut
from
user_profile
