In the last exciting episode, dror(at)zapatec(dot)com (Dror Matalon) wrote:
> I was answering an earlier response that suggested that maybe the actual
> counting took time so it would take quite a bit longer when there are
> more rows to count.
Well, if a "where clause" allows the system to use an index to search
for the subset of elements, that would reduce the number of pages that
have to be examined, thereby diminishing the amount of work.
Why don't you report what EXPLAIN ANALYZE returns as output for the
query with WHERE clause? That would allow us to get more of an idea
of what is going on...
(format nil "~S(at)~S" "cbbrowne" "acm.org")
When replying, it is often possible to cleverly edit the original
message in such a way as to subtly alter its meaning or tone to your
advantage while appearing that you are taking pains to preserve the
author's intent. As a bonus, it will seem that your superior
intellect is cutting through all the excess verbiage to the very heart
of the matter. -- from the Symbolics Guidelines for Sending Mail
In response to
pgsql-performance by date
|Next:||From: Greg Stark||Date: 2003-10-27 15:09:09|
|Subject: Re: Various performance questions|
|Previous:||From: Manfred Koizar||Date: 2003-10-27 10:08:49|
|Subject: Re: Performance Concern|