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