题解 | #查看不同年龄段的用户明细#

select
device_id
,gender
,case when age < 20 then '20岁以下'
      when age >= 20 and age < 24 then '20-24岁'
      when age >= 25 then '25岁及以上'
      else '其他' end as age_cut
from user_profile