From: Tom Lane <tgl@sss.pgh.pa.us>
To: Simon Riggs <simon@2ndquadrant.com>
Cc: paddor@gmail.com
Cc: pgsql-docs@postgresql.org
Subject: Re: Wording in TABLESAMPLE documentation
Date: Fri, 12 Aug 2016 10:24:13 -0400
Message-ID: <26367.1471011853@sss.pgh.pa.us> (raw)
In-Reply-To: <CANP8+jJijc-rUNA_YuQOarFXUmHH8Qj5GuNuMMKK1MusNPepaQ@mail.gmail.com>
References: <20160811162148.26427.26037@wrigleys.postgresql.org>
<CANP8+jJijc-rUNA_YuQOarFXUmHH8Qj5GuNuMMKK1MusNPepaQ@mail.gmail.com>
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Simon Riggs <simon@2ndquadrant.com> writes:
> On 11 August 2016 at 17:21, <paddor@gmail.com> wrote:
>> > If REPEATABLE is not given then a new random sample is selected for each
>> query.
>>
>> the word "sample" should be "seed". Of course it results in a new random
>> sample as well, but IMHO this sentence is about what happens to the seed in
>> case REPEATABLE (seed) is omitted.
> Corrected, thanks.
I do not think this is an improvement. The sentence was specifically about
whether the sample (that is, the set of rows selected) would change. This
rewording essentially removes that user-visible behavior guarantee, and
for what? It's certainly not any clearer.
regards, tom lane
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To: pgsql-docs@postgresql.org
Cc: tgl@sss.pgh.pa.us, simon@2ndquadrant.com, paddor@gmail.com
Subject: Re: Wording in TABLESAMPLE documentation
In-Reply-To: <26367.1471011853@sss.pgh.pa.us>
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