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>=25 THEN '25岁及以上'
WHEN age between 20 and 24 THEN '20-24岁'
WHEN age <20 THEN '20岁以下'
ELSE '其他'
END as `age_cut`
FROM
user_profile
