From: Michael Lewis <mlewis@entrata.com>
To: Piotr Włodarczyk <piotr.wlodarczyk@gnb.pl>
Cc: pgsql-performance@lists.postgresql.org <pgsql-performance@lists.postgresql.org>
Subject: Re: Planner performance in partitions
Date: Mon, 12 Aug 2019 13:05:25 -0600
Message-ID: <CAHOFxGrPiuFFNETAbV3rcw1COns8vJbgPm5zrGiSeO9GZPRshQ@mail.gmail.com> (raw)
In-Reply-To: <5675f9f771f04d9f8b5cffe16f4a4175@EX13MBX02.gb.ad.corp>
References: <5675f9f771f04d9f8b5cffe16f4a4175@EX13MBX02.gb.ad.corp>
"It is also important to consider the overhead of partitioning during query
planning and execution. The query planner is generally able to handle
partition hierarchies with *up to a few hundred partitions fairly well*,
provided that typical queries allow the query planner to prune all but a
small number of partitions. Planning times become longer and memory
consumption becomes higher as more partitions are added." (emphasis added)
--https://www.postgresql.org/docs/current/ddl-partitioning.html
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To: pgsql-performance@postgresql.org
Cc: mlewis@entrata.com, piotr.wlodarczyk@gnb.pl, pgsql-performance@lists.postgresql.org
Subject: Re: Planner performance in partitions
In-Reply-To: <CAHOFxGrPiuFFNETAbV3rcw1COns8vJbgPm5zrGiSeO9GZPRshQ@mail.gmail.com>
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