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Group By Tinytext Column Takes Very Long time (Doc ID 2495469.1)

Last updated on MARCH 03, 2019

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

Simple Group By on a Tinytext Column will take very long time to finish.

The select statement will take hours to complete. If Column b is varchar, the query on same table will only cost a few seconds.

Changes

New created tables or changed the Column type.

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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