explain workload

From: Radhya sahal <rad_cs_2006(at)yahoo(dot)com>
To: pgsql-performance group <pgsql-performance(at)postgresql(dot)org>
Subject: explain workload
Date: 2011-10-22 01:11:41
Message-ID: 1319245901.61568.YahooMailClassic@web38608.mail.mud.yahoo.com
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Hi there,,
How can use explain to estimate workload contains  more than one query in the same time.
such as
explain (q1,q2,q3)......i want the total cost for all queries in the workload using one explain ,,??
regards..

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