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From: Benjamin Arai <benjamin@araisoft.com>
To: pgsql-general@postgresql.org
To: pgsql-performance@postgresql.org
Subject: Question about clustering multiple columns
Date: Tue, 13 Jun 2006 09:04:15 -0700
Message-ID: <002e01c68f03$05f00e10$6501a8c0@uni> (raw)

Hi,
 
I have a database where there are three columns (name,date,data).  The
queries are almost always something like SELECT date,data FROM table WHERE
name=blah AND date > 1/1/2005 AND date < 1/1/2006;.  I currently have three
B-tree indexes, one for each of the columns.  Is clustering on date index
going to be what I want, or do I need a index that contains both name and
date?
 
Benjamin Arai
barai@cs.ucr.edu
http://www.benjaminarai.com <http://www.benjaminarai.com/; 
 
 

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