题解 | #截取出年龄#
截取出年龄
http://www.nowcoder.com/practice/b8d8a87fe1fc415c96f355dc62bdd12f
无何
SELECT
SUBSTR(profile,12,2) age,
count(*) number
FROM
user_submit
GROUP BY
age;
截取出年龄
http://www.nowcoder.com/practice/b8d8a87fe1fc415c96f355dc62bdd12f
无何
SELECT
SUBSTR(profile,12,2) age,
count(*) number
FROM
user_submit
GROUP BY
age;
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