From: AlexK987 <alex.cue.987@gmail.com>
To: pgsql-performance@postgresql.org
Subject: How to tell ANALYZE to collect statistics from the whole table?
Date: Sat, 24 Jan 2015 16:33:19 -0700 (MST)
Message-ID: <1422142399144-5835339.post@n5.nabble.com> (raw)
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The documentation states that "The extent of analysis can be controlled by
adjusting the default_statistics_target configuration variable". It looks
like I can tell Postgres to create more histograms with more bins, and more
distinct values. This implicitly means that Postgres will use a larger
random subset to calculate statistics.
However, this is not what I want. My data may be quite skewed, and I want
full control over the size of the sample. I want to explicitly tell Postgres
to analyze the whole table. How can I accomplish that?
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To: pgsql-performance@postgresql.org
Cc: alex.cue.987@gmail.com
Subject: Re: How to tell ANALYZE to collect statistics from the whole table?
In-Reply-To: <1422142399144-5835339.post@n5.nabble.com>
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