题解 | #计算25岁以上和以下的用户数量#
计算25岁以上和以下的用户数量
https://www.nowcoder.com/practice/30f9f470390a4a8a8dd3b8e1f8c7a9fa
SELECT IF(age>=25,"25岁及以上","25岁以下") as age_cut,count(device_id) as number FROM user_profile GROUP BY age_cut
用IF 函数判断
计算25岁以上和以下的用户数量
https://www.nowcoder.com/practice/30f9f470390a4a8a8dd3b8e1f8c7a9fa
SELECT IF(age>=25,"25岁及以上","25岁以下") as age_cut,count(device_id) as number FROM user_profile GROUP BY age_cut
用IF 函数判断
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