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SQL statement optimization, order by desc speed optimization

2022-07-06 17:46:00 【CSDN Q & A】

I have one sql Need to optimize , Use order by desc+ limit Post query speed is particularly slow . Is there any way to solve it ？

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

I found some solutions on the Internet , But most of them do not meet the requirements and have no effect , Please take a look

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https://yzsam.com/2022/187/202206291643384332.html

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当前位置：网站首页>SQL statement optimization, order by desc speed optimization

SQL statement optimization, order by desc speed optimization

I have one sql Need to optimize , Use order by desc+ limit Post query speed is particularly slow . Is there any way to solve it ？

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

I found some solutions on the Internet , But most of them do not meet the requirements and have no effect , Please take a look

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