From: | Chris Browne <cbbrowne(at)acm(dot)org> |
---|---|
To: | pgsql-sql(at)postgresql(dot)org |
Subject: | Re: New record position |
Date: | 2005-03-31 17:33:49 |
Message-ID: | 607jjnsosi.fsf@dba2.int.libertyrms.com |
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Lists: | pgsql-sql |
gpatnude(at)hotmail(dot)com ("Greg Patnude") writes:
> There's a difference between "natural" order (the location in the
> database or on disk) and "record" order (the order specified by the
> primary key)...
That's well and fine; I could see the "natural order" in which data is
returned varying over time in view of the fact that it is probably
quickest to start by first returning the rows that are sitting in
shared cache, and only then going to the table to get more.
--
(format nil "~S(at)~S" "cbbrowne" "cbbrowne.com")
http://www3.sympatico.ca/cbbrowne/postgresql.html
"The present need for security products far exceeds the number of
individuals capable of designing secure systems. Consequently,
industry has resorted to employing folks and purchasing "solutions"
from vendors that shouldn't be let near a project involving securing a
system." -- Lucky Green
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