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