From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
---|---|
To: | Frank Bax <fbax(at)sympatico(dot)ca> |
Cc: | pgsql-sql(at)postgresql(dot)org |
Subject: | Re: Index doesn't appear to be working. |
Date: | 2002-03-03 18:36:10 |
Message-ID: | 200203031836.g23IaAl15256@candle.pha.pa.us |
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Lists: | pgsql-sql |
Frank Bax wrote:
> At 11:02 AM 03/03/02 -0500, Bruce Momjian wrote:
> > Indexes are not automatically used by every query. Indexes are only
> > used if the table is larger than a minimum size, and the index
> > selects only a small percentage of the rows in the table.
>
>
> Shouldn't it say:
> "and the *query* selects only a small percentage..."
Yes, I meant "index returns only a small percentage", but query selects
is better. Thanks.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
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