题解 | #截取出年龄#
截取出年龄
https://www.nowcoder.com/practice/b8d8a87fe1fc415c96f355dc62bdd12f
select b.age,count(b.age)number from (select SUBSTRING_INDEX(a.r1,',',1)age from ( select SUBSTRING_INDEX(profile,',',-2) r1 from user_submit)a)b group by b.age
截取出年龄
https://www.nowcoder.com/practice/b8d8a87fe1fc415c96f355dc62bdd12f
select b.age,count(b.age)number from (select SUBSTRING_INDEX(a.r1,',',1)age from ( select SUBSTRING_INDEX(profile,',',-2) r1 from user_submit)a)b group by b.age
相关推荐