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Re: Indexes not used

From: "D(dot) Duccini" <duccini(at)backpack(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Pgsql-novice <pgsql-novice(at)postgresql(dot)org>
Subject: Re: Indexes not used
Date: 2001-03-15 20:42:04
Message-ID: Pine.GSO.4.03.10103151440560.2896-100000@ra.bpsi.net (view raw or flat)
Thread:
Lists: pgsql-novice
not even a million

# select count(*) from radusage;
 count  
--------
 573042
(1 row)

what is the analyze?  i've run vacuum several times

On Thu, 15 Mar 2001, Tom Lane wrote:

> "D. Duccini" <duccini(at)backpack(dot)com> writes:
> > # explain select * from radusage where account = 'someuser';
> 
> > Seq Scan on radusage  (cost=0.00..13839.67 rows=5757 width=50)
> 
> Have you done a VACUUM ANALYZE?
> 
> The rows count looks like it might be a default estimate (but I'm just
> counting on my fingers to guess that you have about a million rows in
> the table).  If the rows count *is* accurate then a seq scan is
> probably the right thing to be using...
> 
> 			regards, tom lane
> 


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