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

Last updated on MAY 22, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 10.1.0.2 and later
Information in this document applies to any platform.
***Checked for relevance on 13-May-2012***

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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