题解 | 截取出年龄
截取出年龄
https://www.nowcoder.com/practice/b8d8a87fe1fc415c96f355dc62bdd12f
select substr(profile,12,2) as age, count(1)as number from user_submit group by age
截取出age ,再分组,count
截取出年龄
https://www.nowcoder.com/practice/b8d8a87fe1fc415c96f355dc62bdd12f
select substr(profile,12,2) as age, count(1)as number from user_submit group by age
截取出age ,再分组,count
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