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 gender,count(gender) number from (select device_id,substring(profile,15,6) gender from user_submit)a group by gender; 不用子查询好像更快
统计每种性别的人数
https://www.nowcoder.com/practice/f04189f92f8d4f6fa0f383d413af7cb8
select gender,count(gender) number from (select device_id,substring(profile,15,6) gender from user_submit)a group by gender; 不用子查询好像更快
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