| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Etsuro Fujita <etsuro(dot)fujita(at)gmail(dot)com> |
| Cc: | Etsuro Fujita <fujita(dot)etsuro(at)lab(dot)ntt(dot)co(dot)jp>, sean(dot)johnston(at)edgeintelligence(dot)com, pgsql-bugs(at)lists(dot)postgresql(dot)org, pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: BUG #15781: subselect on foreign table (postgres_fdw) can crash (segfault) |
| Date: | 2019-04-27 14:47:13 |
| Message-ID: | 20776.1556376433@sss.pgh.pa.us |
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| Lists: | pgsql-bugs pgsql-hackers |
Etsuro Fujita <etsuro(dot)fujita(at)gmail(dot)com> writes:
> On Sat, Apr 27, 2019 at 2:10 AM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> If we don't want to change what the core code does with fdw_exprs,
>> I think the only way to fix it is to hack postgres_fdw so that it
>> won't generate plans involving the problematic case.
> Seems reasonable.
>> See attached.
> I read the patch. It looks good to me. I didn't test it, though.
Thanks for looking! Have a good vacation ...
regards, tom lane
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