Re: Group by wrong results?

  • From: "Daniel Fink" <dmarc-noreply@xxxxxxxxxxxxx> (Redacted sender "daniel.fink" for DMARC)
  • To: rjoralist3@xxxxxxxxxxxxxxxxxxxxx
  • Date: Thu, 9 Aug 2018 12:02:58 -0600

Bingo! Thanks for finding that. I just tested it with the suggested
workaround and it returns the data as I expect.



On Thu, Aug 9, 2018 at 10:20 AM Rich J <rjoralist3@xxxxxxxxxxxxxxxxxxxxx>
wrote:

On 2018/08/09 09:46, Rich J wrote:

On 2018/08/08 13:33, Daniel Fink wrote:

The 2nd query I posted is returning the data I want (max number of
sessions per minute, not a total count of sessions per minute). I pulled
the queries apart and checked the data output.

It's interesting that:

ALTER SYSTEM SET OPTIMIZER_FEATURES_ENABLE='12.1.0.1' SCOPE=BOTH;

...has the query returning the correct results, as inferred by Jonathan's
blog post linked in a previous response.

I'm getting the same incorrect grouping as you with my 12.1.0.2 DB, and
this setting appears to be a workaround, although with the distinct
possibility of other side-effects.

BTW, this seems to match BUG 19567916 and the bugs/fixes that supersede it.

Rich

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