题解 | #截取出年龄#
截取出年龄
http://www.nowcoder.com/practice/b8d8a87fe1fc415c96f355dc62bdd12f
select substring(profile
, 12, 2) as age, count(device_id) as number
from user_submit
group by age;
截取出年龄
http://www.nowcoder.com/practice/b8d8a87fe1fc415c96f355dc62bdd12f
select substring(profile
, 12, 2) as age, count(device_id) as number
from user_submit
group by age;
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