From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Simon Riggs <simon(at)2ndquadrant(dot)com> |
Cc: | paddor(at)gmail(dot)com, pgsql-docs(at)postgresql(dot)org |
Subject: | Re: Wording in TABLESAMPLE documentation |
Date: | 2016-08-12 14:24:13 |
Message-ID: | 26367.1471011853@sss.pgh.pa.us |
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Lists: | pgsql-docs |
Simon Riggs <simon(at)2ndquadrant(dot)com> writes:
> On 11 August 2016 at 17:21, <paddor(at)gmail(dot)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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