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 then "20岁以下"
when age >= 25 then "25岁及以上"
when age >=20 then "20-24岁"
else "其他"
end as age_cnt
from user_profile
