按 15 分钟间隔对 mysql 查询进行分组

Group mysql query by 15 min intervals(按 15 分钟间隔对 mysql 查询进行分组)

问题描述

我有一个监控系统，它每 n 秒收集一次数据(n 大约为 10，但会有所不同).我想以 15 分钟的间隔汇总收集到的数据.有没有办法将时间戳值合并为 15 分钟的块以允许分组工作?

I've got a monitoring system that is collecting data every n seconds (n is approximately 10 but varies). I'd like to aggregate the collected data by 15 minute intervals. Is there a way to consolidate the timestamp values into 15 minute chunks to allow for grouping to work?

推荐答案

SELECT   FLOOR(UNIX_TIMESTAMP(timestamp)/(15 * 60)) AS timekey
FROM     table
GROUP BY timekey;

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