quest:optimization with indexes

From: Clayton Cottingham <drfrog(at)smartt(dot)com>
To: "pgsql-sql(at)postgresql(dot)org" <pgsql-sql(at)postgresql(dot)org>
Subject: quest:optimization with indexes
Date: 1999-08-10 22:42:40
Message-ID: 37B0AAE0.926AE58D@smartt.com
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hello,
im looking for info/help on creating indexes
im using 6.5
we have a table overe 100,000 rows

if we put in an index or not an explain say it still does a seq scan,
same amount of time taken!

ive tried putting the index using just the oid , a combo of some fields
of our data using btree

where/what rules should be followed for setting up a good indexing
scheme under pg?

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