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A Query That Refers to User Variables is Very Slower Than Expected (Doc ID 2953205.1)

Last updated on JUNE 02, 2023

Applies to:

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

Symptoms

Issue Clarification
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When substituting a string constant with a @user variable containing the same string, in a particular query, the query becomes magnitudes slower.

Changes

 User variables are used in place of string constants.

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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