From: Tom Lane <tgl@sss.pgh.pa.us>
To: fardeen memon <frank69in@yahoo.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Performance problem with joins
Date: Fri, 08 Sep 2006 10:46:16 -0400
Message-ID: <8114.1157726776@sss.pgh.pa.us> (raw)
In-Reply-To: <20060908124823.83664.qmail@web60820.mail.yahoo.com>
References: <20060908124823.83664.qmail@web60820.mail.yahoo.com>
fardeen memon <frank69in@yahoo.com> writes:
> What is it that i am doing wrong?
I think the forced coercion to date type in the view case is preventing
the planner from making a good guess about the selectivity of the
condition on tra_date. It has stats about tra_date's distribution,
but none about the distribution of "tra_date::date".
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, frank69in@yahoo.com
Subject: Re: Performance problem with joins
In-Reply-To: <8114.1157726776@sss.pgh.pa.us>
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