Re: [SPAM] 10gR2 Upgrade .. Watch out

Well, 1 and 2 are expected behavior (order of output is not guaranteed, unless you specify an 'order by' clause, period), but 3 is definitely a bug.

-Mark

On Wed, 2006-12-27 at 14:00 -0800, GovindanK wrote:
> In an earlier posting , Juan Carlos had mentioned about having problem with "union all"; We encountered the following after upgrading to 10gR2. Thought i will share this with the list.
> 1. Group by was not doing the sort in the default order where as 9.2.0.6 / 9i Rel2 was doing so
> 2. Same problem with SELECT DISTINCT / SELECT UNIQUE
> 3. And Recently
> SELECT name, SUM(basic) total FROM TEST WHERE basic=20 GROUP BY name ORDER BY 2 DESC did not work;
> If you use SELECT name, SUM(basic) total FROM TEST WHERE basic BETWEEN 20 AND 20 GROUP BY name ORDER BY 2 DESC then it works!!!
>
> Patch number is 5415881.
> Please double confirm with your db release by writing simple SQL queries prior to proceeding. Some of our reports / queries were producing "different" results after move to 10gRel2. Also check your UNION/UNIONALL queries.
> HTH
> GovindanK
> Certified DBA
> Learning Stops at ... Infinity

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