From: Jehan-Guillaume de Rorthais <ioguix@free.fr>
To: pgsql-general@postgresql.org
Subject: Re: Strange avg value size for index on expression in pg_stats
Date: Mon, 10 Nov 2014 12:00:45 +0100
Message-ID: <20141110120045.7cc7c976@erg> (raw)
In-Reply-To: <20141110115254.2997aaf8@erg>
References: <20141110115254.2997aaf8@erg>
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On Mon, 10 Nov 2014 11:52:54 +0100
Jehan-Guillaume de Rorthais <ioguix@free.fr> wrote:
> Hello,
>
> I'm not sure if I should post here or on pgsql-hackers.
>
> While investigating about a wrong result with my btree bloat estimation query,
> I found a strange stat deviation between the average size of a value in its
> table and its average size in one index on the "lower" expression.
Oh, I forgot to add links to this query, for testing purpose:
* https://gist.github.com/ioguix/c29d5790b8b93bf81c27
* explanations, see http://blog.ioguix.net/tag/bloat/
Cheers,
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To: pgsql-general@postgresql.org
Cc: ioguix@free.fr
Subject: Re: Strange avg value size for index on expression in pg_stats
In-Reply-To: <20141110120045.7cc7c976@erg>
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