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

1）年龄范围
age>=20 and age<=24
beween 20 and 24 （包含本数）
2）sql中不支持
20 <= age <= 24连续范围判断