Re: Oddity with parallel safety test for scan/join target in grouping_planner

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От Etsuro Fujita
Тема Re: Oddity with parallel safety test for scan/join target in grouping_planner
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Msg-id 5C876354.1000905@lab.ntt.co.jp
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Ответ на Re: Oddity with parallel safety test for scan/join target in grouping_planner  (Tom Lane <tgl@sss.pgh.pa.us>)
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(2019/03/11 23:46), Tom Lane wrote:
> So this is
> just a plan-quality problem not a wrong-answer problem.
>
> However, I'd still argue for back-patching into v11, on the grounds
> that this is a regression from v10.  The example you just gave does
> produce the desired plan in v10, and I think it's more likely that
> people would complain about a regression from v10 than that they'd
> be unhappy because we changed it between 11.2 and 11.3.

Agreed.  I committed the patch to v11 and HEAD.  Thanks for reviewing!

Best regards,
Etsuro Fujita

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