From: Tom Lane <tgl@sss.pgh.pa.us>
To: Andrey Zhidenkov <andrey.zhidenkov@gmail.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Planner do seq scan on empty master partitioned table
Date: Thu, 11 Aug 2016 09:50:27 -0400
Message-ID: <29012.1470923427@sss.pgh.pa.us> (raw)
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Andrey Zhidenkov <andrey.zhidenkov@gmail.com> writes:
> I have a table (registry.entry) which has ~ 100 inherited tables. This
> is a master table and it's empty:
As long as it's empty, a seqscan should be essentially free. Don't
worry about it. And definitely don't create indexes, that will just
add cost.
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, andrey.zhidenkov@gmail.com
Subject: Re: Planner do seq scan on empty master partitioned table
In-Reply-To: <29012.1470923427@sss.pgh.pa.us>
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