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EXPLAIN output explanation requested

From: Ron Arts <ron(dot)arts(at)neonova(dot)nl>
To: pgsql-novice(at)postgresql(dot)org
Subject: EXPLAIN output explanation requested
Date: 2008-06-03 09:56:39
Message-ID: 48451557.8010800@neonova.nl (view raw or flat)
Thread:
Lists: pgsql-novice
Hello all,

I have an EXPLAIN statement that gives me output I understand,
but on the other hand I don't...

tium=# explain select codec1, phonetype from phone;
                          QUERY PLAN
------------------------------------------------------------
  Seq Scan on phone  (cost=0.00..85882.58 rows=658 width=11)
(1 row)


This is a table with 658 rows. Queries are indeed very
slow. How is the query plan computed? What does the 85882 value
mean?

Thanks,
Ron


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Next:From: A. KretschmerDate: 2008-06-03 10:35:34
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