Re: Sequential Scans

From: Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com>
To: Efraín Déctor <efraindector(at)motumweb(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Sequential Scans
Date: 2012-04-02 18:33:08
Message-ID: CAOR=d=1Z4UU4m6OFkLW3TEApVQcNAHxZEw=-onGtwzSvCOnTyg@mail.gmail.com
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On Mon, Apr 2, 2012 at 12:30 PM, Efraín Déctor
<efraindector(at)motumweb(dot)com> wrote:
> Hello.  What is the difference between Sequential Scans and Sequential
> Tuples Read?.

A sequential scan is what happens when the table is read sequentially.
One sequential scan can result in MANY tuples being read
sequentially. I.e. a table with 1M rows being sequentially scanned
from end to end will result in 1M sequential tuples being read.

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