题解 | #计算25岁以上和以下的用户数量#
计算25岁以上和以下的用户数量
https://www.nowcoder.com/practice/30f9f470390a4a8a8dd3b8e1f8c7a9fa
select (case when (age < 25 or age is null) then '25岁以下' else '25岁及以上' end ) as age_desc, count(*) as total from user_profile group by age_desc
计算25岁以上和以下的用户数量
https://www.nowcoder.com/practice/30f9f470390a4a8a8dd3b8e1f8c7a9fa
select (case when (age < 25 or age is null) then '25岁以下' else '25岁及以上' end ) as age_desc, count(*) as total from user_profile group by age_desc
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