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
--字符串子串函数的使用 substring_index (profile, ',', -1)
SELECT
substring_index (profile, ',', -1) AS gender,
COUNT(*) AS number
FROM
user_submit
GROUP BY
gender
