Re: Difference between explain analyze and real execution time

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Artur Zając <azajac(at)ang(dot)com(dot)pl>
Cc: "'Robert Haas'" <robertmhaas(at)gmail(dot)com>, pgsql-performance(at)postgresql(dot)org
Subject: Re: Difference between explain analyze and real execution time
Date: 2010-11-15 21:03:55
Message-ID: 7142.1289855035@sss.pgh.pa.us
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=?iso-8859-2?Q?Artur_Zaj=B1c?= <azajac(at)ang(dot)com(dot)pl> writes:
> I've changed default_statistics_target to 10000 and I think that is a
> reason.

That's certainly going to cost you something, but this seems like a
mighty large slowdown, especially for a non-join query. What datatype
is te.idtr, anyway?

regards, tom lane

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