Re: [sqlsmith] Failed assertion in postgres_fdw/deparse.c:1116

From: Etsuro Fujita <fujita(dot)etsuro(at)lab(dot)ntt(dot)co(dot)jp>
To: Robert Haas <robertmhaas(at)gmail(dot)com>
Cc: Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>, Noah Misch <noah(at)leadboat(dot)com>, Amit Langote <amitlangote09(at)gmail(dot)com>, Ashutosh Bapat <ashutosh(dot)bapat(at)enterprisedb(dot)com>, Andreas Seltenreich <seltenreich(at)gmx(dot)de>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: [sqlsmith] Failed assertion in postgres_fdw/deparse.c:1116
Date: 2016-06-17 02:44:09
Message-ID: 8f76fda3-4c86-9945-26d9-3175a6c68851@lab.ntt.co.jp
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On 2016/06/16 22:00, Robert Haas wrote:
> On Thu, Jun 16, 2016 at 7:05 AM, Etsuro Fujita
> <fujita(dot)etsuro(at)lab(dot)ntt(dot)co(dot)jp> wrote:
>> ISTM that a robuster solution to this is to push down the ft1-ft2-ft3 join
>> with the PHV by extending deparseExplicitTargetList() and/or something else
>> so that we can send the remote query like:
>>
>> select ft1.a, (ft3.a IS NOT NULL) from (ft1 inner join ft2 on ft1.a = ft2.a)
>> left join ft3 on ft1.a = ft3.a

> I completely agree we should have that, but not for 9.6.

OK, I'll work on that for 10.0.

Best regards,
Etsuro Fujita

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