Re: BUG #15430: partition-wise join only works in combination with pruning on 1 partition

From: Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>
To: Bart D <agile(dot)data(dot)analytics(at)gmail(dot)com>
Cc: pgsql-bugs(at)lists(dot)postgresql(dot)org, PG Bug reporting form <noreply(at)postgresql(dot)org>
Subject: Re: BUG #15430: partition-wise join only works in combination with pruning on 1 partition
Date: 2018-10-16 00:29:29
Message-ID: a0a25e04-fed9-ef2a-e7e7-b08fbf472d22@lab.ntt.co.jp
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On 2018/10/16 4:30, Bart D wrote:
> Amit,
>
> You are right, I think the feature should be enabled by default though.
>
> This feature guarantees linear scalability.

It isn't enabled by default in PG 11, because its current implementation
is CPU and memory consuming. If and when that's fixed in some future
version, it will be enabled.

Thanks,
Amit

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