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 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
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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