The EXPLAIN Statement Triggers Warnings

(Doc ID 2420988.1)

Last updated on JULY 10, 2018

Applies to:

MySQL Server - Version 5.5 and later
MySQL Cluster - Version 7.2 and later
Information in this document applies to any platform.

Symptoms

In MySQL 5.7 and later and in 5.6 and earlier using EXPLAIN EXTENDED, the EXPLAIN statement triggers one or more warnings. For example:

 

Changes

The warnings may start occurring after upgrading to MySQL 5.7 or later.

Cause

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