From: Tom Lane <tgl@sss.pgh.pa.us>
To: Ron <ronljohnsonjr@gmail.com>
Cc: pgsql-admin@lists.postgresql.org
Subject: Re: Large number of partitions of a table
Date: Mon, 17 Jan 2022 09:58:32 -0500
Message-ID: <3992395.1642431512@sss.pgh.pa.us> (raw)
In-Reply-To: <671340a5-1960-e5dc-1d09-4b7f36cda2c8@gmail.com>
References: <YeTYA63gEXNePfkv@admin.sibptus.ru>
<3919502.1642393668@sss.pgh.pa.us>
<YeUAx56Juri43xGY@admin.sibptus.ru>
<671340a5-1960-e5dc-1d09-4b7f36cda2c8@gmail.com>
Ron <ronljohnsonjr@gmail.com> writes:
> On 1/16/22 11:38 PM, Victor Sudakov wrote:
>> so no query should ever have to use more than 1 partition.
> I find it hard to believe that you'll *never* run a report against more
> customers than are in a single partition.
Yeah, I'm a little suspicious of that. The other thing I'd be worried
about, given that the OP is using v13, is that UPDATE/DELETE planning
performance can be pretty awful with lots of partitions. There were
some O(N^2) behaviors in there that we didn't get rid of till v14.
regards, tom lane
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To: pgsql-admin@postgresql.org
Cc: tgl@sss.pgh.pa.us, ronljohnsonjr@gmail.com, pgsql-admin@lists.postgresql.org
Subject: Re: Large number of partitions of a table
In-Reply-To: <3992395.1642431512@sss.pgh.pa.us>
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