如何以 15 分钟的间隔从多个表中提取值？

【问题标题】：How can I pull values at 15 minutes interval from multiple tables?如何以 15 分钟的间隔从多个表中提取值？
【发布时间】：2015-03-26 16:56:32
【问题描述】：

我有很多很多表（具有相同的设计，每个表相当于一天），其中包含时间戳值，我需要提取每隔 15 分钟出现一次的值，以便可以将它们导出为 CSV。有没有办法遍历记录，迭代 where 子句，并将它们插入到一个临时表中？

这是我目前正在使用的：

(SELECT dtProcessedUTC, binData
FROM `timecull_010109` 
where TIME(dtProcessedUTC) BETWEEN '00:00:00' AND '00:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '00:15:00' AND '00:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '00:30:00' AND '00:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '00:45:00' AND '00:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '01:00:00' AND '01:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '01:15:00' AND '01:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '01:30:00' AND '01:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '01:45:00' AND '01:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '02:00:00' AND '02:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '02:15:00' AND '02:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '02:30:00' AND '02:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '02:45:00' AND '02:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '03:00:00' AND '03:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '03:15:00' AND '03:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '03:30:00' AND '03:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '03:45:00' AND '03:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '04:00:00' AND '04:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '04:15:00' AND '04:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '04:30:00' AND '04:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '04:45:00' AND '04:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '05:00:00' AND '05:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '05:15:00' AND '05:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '05:30:00' AND '05:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '05:45:00' AND '05:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '06:00:00' AND '06:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '06:15:00' AND '06:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '06:30:00' AND '06:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '06:45:00' AND '06:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '07:00:00' AND '07:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '07:15:00' AND '07:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '07:30:00' AND '07:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '07:45:00' AND '07:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '08:00:00' AND '08:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '08:15:00' AND '08:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '08:30:00' AND '08:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '08:45:00' AND '08:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '09:00:00' AND '09:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '09:15:00' AND '09:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '09:30:00' AND '09:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '09:45:00' AND '09:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '10:00:00' AND '10:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '10:15:00' AND '10:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '10:30:00' AND '10:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '10:45:00' AND '10:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '11:00:00' AND '11:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '11:15:00' AND '11:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '11:30:00' AND '11:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '11:45:00' AND '11:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '12:00:00' AND '12:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '12:15:00' AND '12:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '12:30:00' AND '12:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '12:45:00' AND '12:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '13:00:00' AND '13:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '13:15:00' AND '13:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '13:30:00' AND '13:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '13:45:00' AND '13:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '14:00:00' AND '14:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '14:15:00' AND '14:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '14:30:00' AND '14:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '14:45:00' AND '14:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '15:00:00' AND '15:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '15:15:00' AND '15:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '15:30:00' AND '15:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '15:45:00' AND '15:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '16:00:00' AND '16:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '16:15:00' AND '16:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '16:30:00' AND '16:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '16:45:00' AND '16:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '17:00:00' AND '17:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '17:15:00' AND '17:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '17:30:00' AND '17:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '17:45:00' AND '17:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '18:00:00' AND '18:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '18:15:00' AND '18:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '18:30:00' AND '18:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '18:45:00' AND '18:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '19:00:00' AND '19:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '19:15:00' AND '19:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '19:30:00' AND '19:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '19:45:00' AND '19:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '20:00:00' AND '20:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '20:15:00' AND '20:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '20:30:00' AND '20:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '20:45:00' AND '20:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '21:00:00' AND '21:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '21:15:00' AND '21:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '21:30:00' AND '21:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '21:45:00' AND '21:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '22:00:00' AND '22:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '22:15:00' AND '22:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '22:30:00' AND '22:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '22:45:00' AND '22:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '23:00:00' AND '23:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '23:15:00' AND '23:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '23:30:00' AND '23:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '23:45:00' AND '23:45:59')
UNION
(SELECT dtProcessedUTC, binData
FROM `timecull_010209` 
where TIME(dtProcessedUTC) BETWEEN '00:00:00' AND '00:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '00:15:00' AND '00:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '00:30:00' AND '00:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '00:45:00' AND '00:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '01:00:00' AND '01:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '01:15:00' AND '01:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '01:30:00' AND '01:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '01:45:00' AND '01:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '02:00:00' AND '02:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '02:15:00' AND '02:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '02:30:00' AND '02:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '02:45:00' AND '02:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '03:00:00' AND '03:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '03:15:00' AND '03:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '03:30:00' AND '03:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '03:45:00' AND '03:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '04:00:00' AND '04:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '04:15:00' AND '04:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '04:30:00' AND '04:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '04:45:00' AND '04:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '05:00:00' AND '05:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '05:15:00' AND '05:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '05:30:00' AND '05:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '05:45:00' AND '05:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '06:00:00' AND '06:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '06:15:00' AND '06:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '06:30:00' AND '06:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '06:45:00' AND '06:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '07:00:00' AND '07:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '07:15:00' AND '07:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '07:30:00' AND '07:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '07:45:00' AND '07:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '08:00:00' AND '08:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '08:15:00' AND '08:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '08:30:00' AND '08:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '08:45:00' AND '08:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '09:00:00' AND '09:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '09:15:00' AND '09:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '09:30:00' AND '09:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '09:45:00' AND '09:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '10:00:00' AND '10:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '10:15:00' AND '10:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '10:30:00' AND '10:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '10:45:00' AND '10:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '11:00:00' AND '11:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '11:15:00' AND '11:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '11:30:00' AND '11:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '11:45:00' AND '11:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '12:00:00' AND '12:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '12:15:00' AND '12:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '12:30:00' AND '12:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '12:45:00' AND '12:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '13:00:00' AND '13:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '13:15:00' AND '13:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '13:30:00' AND '13:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '13:45:00' AND '13:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '14:00:00' AND '14:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '14:15:00' AND '14:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '14:30:00' AND '14:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '14:45:00' AND '14:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '15:00:00' AND '15:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '15:15:00' AND '15:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '15:30:00' AND '15:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '15:45:00' AND '15:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '16:00:00' AND '16:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '16:15:00' AND '16:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '16:30:00' AND '16:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '16:45:00' AND '16:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '17:00:00' AND '17:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '17:15:00' AND '17:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '17:30:00' AND '17:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '17:45:00' AND '17:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '18:00:00' AND '18:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '18:15:00' AND '18:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '18:30:00' AND '18:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '18:45:00' AND '18:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '19:00:00' AND '19:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '19:15:00' AND '19:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '19:30:00' AND '19:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '19:45:00' AND '19:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '20:00:00' AND '20:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '20:15:00' AND '20:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '20:30:00' AND '20:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '20:45:00' AND '20:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '21:00:00' AND '21:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '21:15:00' AND '21:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '21:30:00' AND '21:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '21:45:00' AND '21:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '22:00:00' AND '22:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '22:15:00' AND '22:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '22:30:00' AND '22:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '22:45:00' AND '22:45:59'
OR  TIME(dtProcessedUTC) BETWEEN '23:00:00' AND '23:00:59'
OR  TIME(dtProcessedUTC) BETWEEN '23:15:00' AND '23:15:59'
OR  TIME(dtProcessedUTC) BETWEEN '23:30:00' AND '23:30:59'
OR  TIME(dtProcessedUTC) BETWEEN '23:45:00' AND '23:45:59')
UNION
(SELECT dtProcessedUTC, binData
FROM `timecull_010309`
...

【问题讨论】：

  • 每天有单独的表格是相当糟糕的设计......也许你应该考虑partitioning？
  • @eggyal 我同意。这是一个遗留数据库。关于 Mike 的查询解决方案，有没有办法从查询中自动导出到 CSV，这样我就可以遍历日期并每天制作一个？我知道这是一个糟糕的设计，但我们还没有资源和时间来替换它。

标签： mysql sql mysql-workbench


【解决方案1】：

怎么样：

(SELECT dtProcessedUTC, binData
FROM `timecull_010109` 
where MINUTE(dtProcessedUTC) % 15 = 0)
UNION
(SELECT dtProcessedUTC, binData
FROM `timecull_010209` 
where MINUTE(dtProcessedUTC) % 15 = 0)
...etc

【讨论】：

  • 非常感谢！这大大加快了进程。
  • 有没有办法从查询中自动导出到 CSV，这样我就可以遍历日期并每天生成一个？
  • 你可以试试 cron 和这个解决方案的组合：stackoverflow.com/a/356605/811240
  • 太棒了！再次感谢！
猜你喜欢
  • 1970-01-01
  • 1970-01-01
  • 2014-07-03
  • 1970-01-01
  • 2012-11-18
  • 2017-12-17
  • 2016-11-24
  • 2016-08-18
  • 1970-01-01
相关资源
最近更新 更多
热门标签
Java Python linux javascript Mysql C# Docker 算法 前端 SpringBoot Redis Vue spring 设计模式 .net core .net kubernetes c++ 数据库 数据结构 大数据 js 机器学习 微服务 Android Go 程序员 面试 JVM ASP.net core 云原生 人工智能 后端 PHP git CSS golang k8s Nginx Django mybatis 深度学习 多线程 React 架构 devops 爬虫 云计算 Spring Boot LeetCode