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
'25岁以下' as age_cut,
count(distinct device_id) as 'number'
from
user_profile
where
age < 25
or age is null
union
select
'25岁及以上' as age_cut,
count(distinct device_id) as 'number'
from
user_profile
where
age >= 25
投递快手等公司10个岗位 >