From: Tom Lane <tgl@sss.pgh.pa.us>
To: Ron <ronljohnsonjr@gmail.com>
Cc: pgsql-admin@lists.postgresql.org
Subject: Re: Partitioning by month causing an error?
Date: Fri, 20 Dec 2019 23:10:26 -0500
Message-ID: <19102.1576901426@sss.pgh.pa.us> (raw)
In-Reply-To: <8ba56626-3b91-6ac8-34a9-ab2c9ca2b8c6@gmail.com>
References: <CAOC+FBW=zSLyHWg2XDTp2eeEAmwzkzZLQPBqFx7_Cso=WMK3ew@mail.gmail.com>
<9226.1576897186@sss.pgh.pa.us>
<8ba56626-3b91-6ac8-34a9-ab2c9ca2b8c6@gmail.com>
Ron <ronljohnsonjr@gmail.com> writes:
> On 12/20/19 8:59 PM, Tom Lane wrote:
>> The rule is that a range partition from A to B covers values A <= X < B.
> If I were to ask to count *from* 1 *to* 100, you'd count from 1 to 100,
> *not* 1 to 99. Who decided to arbitrarily break a grammatical rule we
> (native English speakers, and I bet everyone else, too) all learn as
> children, causing all sorts of needless confusion and breakage?
This rule breaks fewer things than a rule of A <= X <= B would. In
particular, for more-or-less-continuous values like float8s or timestamps,
you really really don't want to have to write down
the-last-possible-value-before-the-start-of-the-next-partition.
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: Partitioning by month causing an error?
In-Reply-To: <19102.1576901426@sss.pgh.pa.us>
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