| From: | Amit Langote <amitlangote09(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, keisuke kuroda <keisuke(dot)kuroda(dot)3862(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Tatsuro Yamada <tatsuro(dot)yamada(dot)tf(at)nttcom(dot)co(dot)jp>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, tatsuhito(dot)kasahara(dot)rd(at)hco(dot)ntt(dot)co(dot)jp |
| Subject: | Re: Huge memory consumption on partitioned table with FKs |
| Date: | 2021-03-11 00:39:27 |
| Message-ID: | CA+HiwqERg6X3xjSmOmNGdMB5Hrx9eQTUDxOG_+PZ4xYuDLw5Kg@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Mar 11, 2021 at 4:25 AM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Amit Langote <amitlangote09(at)gmail(dot)com> writes:
> > On Wed, Mar 10, 2021 at 8:37 AM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> >> Hmm. So, the key point is that the values coming from the partitioned
> >> child table are injected into the test query as parameters, not as
> >> column references, thus it doesn't matter *to the test query* what
> >> numbers the referencing columns have in that child. We just have to
> >> be sure we pass the right parameter values.
>
> > Right.
>
> I did some cosmetic fooling with this (mostly, rewriting the comments
> YA time) and pushed it.
Perfect. Thanks for your time on this.
--
Amit Langote
EDB: http://www.enterprisedb.com
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