Re: would number of fields in a table affect search-query time?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Miles Keaton <mileskeaton(at)gmail(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: would number of fields in a table affect search-query time?
Date: 2004-10-04 23:32:09
Message-ID: 7324.1096932729@sss.pgh.pa.us
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Miles Keaton <mileskeaton(at)gmail(dot)com> writes:
> What surprised me the most is that the subset, even in the original
> database, gave search results MUCH faster than the full table!

The subset table's going to be physically much smaller, so it could just
be that this reflects smaller I/O load. Hard to tell without a lot more
detail about what case you were testing.

regards, tom lane

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