Re: searching using indexes 8.3

On Mar 10, 2008, at 6:33 PM, LARC/J.L.Shipman/jshipman wrote:

> Hi,
> When I do a search such as:
>
> EXPLAIN ANALYZE SELECT * FROM itemsbyauthor;
> QUERY PLAN
> ----------------------------------------------------------------------
> ---------------------------------------------
> Seq Scan on itemsbyauthor (cost=0.00..971.34 rows=53634 width=34)
> (actual time=0.029..25.831 rows=53634 loops=1)
> Total runtime: 34.851 ms
> (2 rows)
>
>
> I have an index for the table, but it is not being utilized. Why
> is this? How do I get the index to be used?

To fetch all rows unordered from a table the fastest method is a
sequential scan. An index scan would be slower, probably significantly.

Alban Hertroys

--
If you can't see the forest for the trees,
cut the trees and you'll see there is no forest.

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