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