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sql语句优化，order by desc速度优化

2022-07-06 09:40:00 【CSDN问答】

我有一个sql需要优化，使用 order by desc+ limit后查询速度特别慢。有什么办法可以解决吗？

SELECT electricity_meter from device_history_log WHERE device_id = '3130303934323735353339343030303030303030' and year (create_time) = '2022' ORDER BY id desc LIMIT 1

在网上找了一些解决方案，但大多数不符合情况以及没有效果，请各位帮忙看一下

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本文为[CSDN问答]所创，转载请带上原文链接，感谢
https://ask.csdn.net/questions/7750731

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当前位置：网站首页>sql语句优化，order by desc速度优化

sql语句优化，order by desc速度优化

我有一个sql需要优化，使用 order by desc+ limit后查询速度特别慢。有什么办法可以解决吗？

SELECT electricity_meter from device_history_log WHERE device_id = '3130303934323735353339343030303030303030' and year (create_time) = '2022' ORDER BY id desc LIMIT 1

在网上找了一些解决方案，但大多数不符合情况以及没有效果，请各位帮忙看一下

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