MySQL optimization of the index table Case - Code World

MySQL optimization of the index table Case

Others 2020-02-09 19:42:54 views: null

Built table SQL:
Here Insert Picture Description
Query category_id is 1 and a case where comments greater than 1, views the most article_id, first explain Results:

Construction three field index results:

Since the second index range is not precisely positioned if necessary to modify the index

built two field index results:
Here Insert Picture Description

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Origin blog.csdn.net/qq_39885372/article/details/104183618

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