Prepared Statements Get Incorrect Optimizer Plan When prefer_ordering_index Is Enabled. (Doc ID 2810114.1)

Last updated on SEPTEMBER 27, 2021

Applies to:

MySQL Server - Version 8.0 and later
Information in this document applies to any platform.

Prepared statements execute slower and with different optimizer plan to non-prepared statements.

With non-prepared statements, EXPLAIN shows Extra: Backward index scan.

With prepared statements, EXPLAIN shows Extra: Using filesort

Upgraded to 8.0.23 thru 8.0.25.

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In this Document

Symptoms

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