Re: Problems with adding a is not null to a query.

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Tim Uckun <timuckun(at)gmail(dot)com>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, pgsql-bugs(at)postgresql(dot)org
Subject: Re: Problems with adding a is not null to a query.
Date: 2011-01-18 02:52:50
Message-ID: 26947.1295319170@sss.pgh.pa.us
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Tim Uckun <timuckun(at)gmail(dot)com> writes:
>> As I've stated repeatedly, your next move needs to be to increase the
>> stats target, at least for that column if not globally.

> Ok How do I go about doing this.

If you want to do it globally for the whole database: change
default_statistics_target in postgresql.conf. If you just want to
affect the one column, use "ALTER TABLE tab ALTER COLUMN col SET
STATISTICS n".

regards, tom lane

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