Test for optimizer

From: 纪晓曦 <sheepjxx(at)gmail(dot)com>
To: Postgres General Postgres General <pgsql-general(at)postgresql(dot)org>
Subject: Test for optimizer
Date: 2009-10-14 13:22:26
Message-ID: 37a11ce00910140622s257530c8s42a67169e73d13e7@mail.gmail.com
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I want to test the optimizer of postgresql.
Can anyone give me any idea about which kinds of query I should test?
large query for path an geqo?
subquery?

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