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GROUP BY Clause Does Not Guarantee a Sort Without ORDER BY Clause in 10g and Above (Doc ID 345048.1)

Last updated on DECEMBER 14, 2020

Applies to:

Oracle Database - Enterprise Edition - Version 10.1.0.2 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

A query with a GROUP BY clause returns unsorted data, whereas previously the data was sorted, or the data was expected to be sorted, based upon previous experience.

Changes

Upgraded Database to version 10G.

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References

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