From: Tom Lane <tgl@sss.pgh.pa.us>
To: allanvv@gmail.com
Cc: pgsql-performance@postgreSQL.org
Subject: Re: Performance problems, bad estimates and plan
Date: Wed, 08 Jun 2005 13:57:19 -0400
Message-ID: <9166.1118253439@sss.pgh.pa.us> (raw)
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Allan Wang <allanvv@gmail.com> writes:
> On Wed, 2005-06-08 at 13:39 -0400, Tom Lane wrote:
>> Are there any NULLs in c.playerid?
> Here is the contents of cities:
I'm sorry, what I should've said is "are there any NULLs in c.playerid
in the output of the first LEFT JOIN?" In practice that means "does
the selected row of tiles actually join to cities?"
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, allanvv@gmail.com
Subject: Re: Performance problems, bad estimates and plan
In-Reply-To: <9166.1118253439@sss.pgh.pa.us>
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