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MySQL Choose the Wrong index based on reconsidering_access_paths_for_index_ordering in optimizer trace (Doc ID 2650826.1)

Last updated on APRIL 16, 2020

Applies to:

MySQL Server - Version 5.6 to 5.7 [Release 5.6 to 5.7]
Information in this document applies to any platform.

Symptoms

Query may choose the wrong index and performance is slow. Comparing the optimization using optimizer traces, you can find the difference between reconsidering_access_paths_for_index_ordering part.

Changes

Data volume increased.

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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