题解 | #截取出年龄#
截取出年龄
https://www.nowcoder.com/practice/b8d8a87fe1fc415c96f355dc62bdd12f
select substring_index(substring_index(profile, ",", 3), ",", -1) as age, count(*) from user_submit group by age; select substring_index(substring_index(profile, ",", -2), ",", 1) as age, count(*) from user_submit group by age; -- 朝前截取或者朝后截取都可以
SHEIN希音公司福利 363人发布