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,age_cut from( select *, 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' when age is null then'其他' end as age_cut from user_profile ) as a;
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