Re: Using more tha one index per table

From: Torsten Zühlsdorff <foo(at)meisterderspiele(dot)de>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: Using more tha one index per table
Date: 2010-07-23 09:22:18
Message-ID: i2bn0a$12p$1@news.eternal-september.org
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Craig James schrieb:

>>> A useful trick to know is that if you replace the version number
>>> with "current", you'll get to the latest version most of the time
>>> (sometimes the name of the page is changed between versions, too, but
>>> this isn't that frequent).
>>
>> The docs pages could perhaps benefit from an auto-generated note saying:
>>
>> "The current version of Pg is 8.4. This documentation is for version
>> 8.2. Click [here] for documentation on the current version."
>>
>> ... or something to that effect. It'd be a nice (and more user-friendly)
>> alternative to url twiddling when searches reveal docs for an old
>> version, and might help push the /current/ pages up in search rank too.
>
> In addition, why not use symlinks so that the current version is simply
> called "current", as in
>
> http://www.postgresql.org/docs/current/static/sql-insert.html
>
> If you google for "postgres insert", you get this:
>
> http://www.postgresql.org/docs/8.1/static/sql-insert.html
>
> The problem is that Google ranks pages based on inbound links, so older
> versions of Postgres *always* come up before the latest version in page
> ranking.

Since 2009 you can deal with this by defining the canonical-version.
(http://googlewebmastercentral.blogspot.com/2009/02/specify-your-canonical.html)

Greetings from Germany,
Torsten

--
http://www.dddbl.de - ein Datenbank-Layer, der die Arbeit mit 8
verschiedenen Datenbanksystemen abstrahiert,
Queries von Applikationen trennt und automatisch die Query-Ergebnisse
auswerten kann.

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