[MySQL performance optimization series] select count(*) uses secondary index hundreds of times faster than primary key index, can you believe it? - Code World

[MySQL performance optimization series] select count(*) uses secondary index hundreds of times faster than primary key index, can you believe it?

Enterprise 2023-01-24 02:03:28 views: null

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Origin blog.csdn.net/qq_35764295/article/details/127670548

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