Re: COPY with no WAL, in certain circumstances

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: pgsql-hackers(at)postgresql(dot)org, Bruce Momjian <bruce(at)momjian(dot)us>
Cc: Simon Riggs <simon(at)2ndquadrant(dot)com>, "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>, pgsql-patches(at)postgresql(dot)org
Subject: Re: COPY with no WAL, in certain circumstances
Date: 2007-01-07 02:20:53
Message-ID: 2067.1168136453@sss.pgh.pa.us
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Bruce Momjian <bruce(at)momjian(dot)us> writes:
> Simon Riggs wrote:
>> Reason for no documentation was that CREATE INDEX and CREATE TABLE AS
>> SELECT already use this optimisation, but to my knowledge neither was/is
>> documented on those command pages.

> I wasn't aware those used the optimization. Seems they all should be
> documented somewhere.

We don't document every single optimization in the system ... if we did,
the docs would be as big as the source code and equally unreadable by
non-programmers. I think it's a much better idea just to mention it one
place and not try to enumerate exactly which commands have the optimization.

regards, tom lane

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