From: | will trillich <will(at)serensoft(dot)com> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: another "EXPLAIN -- NO INDEX?" question |
Date: | 2002-02-10 17:45:52 |
Message-ID: | 20020210114552.B23651@serensoft.com |
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Lists: | pgsql-general |
On Sun, Feb 10, 2002 at 11:29:57AM -0500, Tom Lane wrote:
> Try 7.2, and don't forget to VACUUM ANALYZE after you've loaded the
> data.
i'm stuck with 7.1 for now, and i do the vacuum analyze
nightly... any other ideas?
---------
create index hits_by_server on hits(server);
hits=# explain
hits-# select * from hits where (server = 1 or server = 3);
NOTICE: QUERY PLAN:
Seq Scan on hits (cost=0.00..8537.01 rows=20205 width=90)
EXPLAIN
hits=# select count(*) from hits;
count
--------
266611
(1 row)
hits=# select count(*) from hits where (server=1 or server=3);
count
-------
3678
(1 row)
--
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will(at)serensoft(dot)com
http://sourceforge.net/projects/newbiedoc -- we need your brain!
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