题解 | #统计每种性别的人数#
统计每种性别的人数
https://www.nowcoder.com/practice/f04189f92f8d4f6fa0f383d413af7cb8
select
case
when profile like '%female' then 'female'
else 'male'
end as gender,
count(device_id)
from
user_submit
group by gender
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