From: Tom Lane <tgl@sss.pgh.pa.us>
To: James Shaw <js102@zepler.net>
Cc: pgsql-docs@postgresql.org
Subject: Re: Possible mistake in 'Using EXPLAIN' section
Date: Wed, 10 Oct 2007 08:10:54 -0400
Message-ID: <13020.1192018254@sss.pgh.pa.us> (raw)
In-Reply-To: <c4a5ac250710100406j51c34512k47ef125c32c6f910@mail.gmail.com>
References: <c4a5ac250710100406j51c34512k47ef125c32c6f910@mail.gmail.com>
"James Shaw" <js102@zepler.net> writes:
> The example given has "Seq Scan on tenk1 (cost=0.00..458.00" in the example,
> but then says, "you will find out that tenk1 has 358 disk pages" and "the
> cost is estimated at 358 page reads". Shouldn't this be 458 disk page
> reads?
No. Why did you stop reading in mid-sentence?
regards, tom lane
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To: pgsql-docs@postgresql.org
Cc: tgl@sss.pgh.pa.us, js102@zepler.net
Subject: Re: Possible mistake in 'Using EXPLAIN' section
In-Reply-To: <13020.1192018254@sss.pgh.pa.us>
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