Re: postgres_fdw join pushdown (was Re: Custom/Foreign-Join-APIs)

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От Etsuro Fujita
Тема Re: postgres_fdw join pushdown (was Re: Custom/Foreign-Join-APIs)
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Msg-id 56C2BC6A.5070605@lab.ntt.co.jp
обсуждение исходный текст
Ответ на Re: postgres_fdw join pushdown (was Re: Custom/Foreign-Join-APIs)  (Ashutosh Bapat <ashutosh.bapat@enterprisedb.com>)
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Дерево обсуждения 
On 2016/02/15 21:33, Ashutosh Bapat wrote:
> Here's patch with better way to fix it. I think while concatenating the
> lists, we need to copy the lists being appended and in all the cases. If
> we don't copy, a change in those lists can cause changes in the upward
> linkages and thus lists of any higher level joins.

Maybe I'm missing something, but I don't understand why such a change in 
those lists happens.  Could you explain about that in more detail?

Best regards,
Etsuro Fujita

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