From: Radhya sahal <rad_cs_2006@yahoo.com>
To: pgsql-performance group <pgsql-performance@postgresql.org>
Subject: how explain works
Date: Mon, 11 Apr 2011 16:02:31 -0700 (PDT)
Message-ID: <64088.55807.qm@web38604.mail.mud.yahoo.com> (raw)
Dear ,all
plz could any one help me !!!
how explian works as math equations to estimate cost with constatn query
parameters
such as cpu_tuple cost ,random page cost ...etc
i want maths expression in order to know how these parameters will effect in
cost ???
please any one can help me ??
Regards
Radhya...
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Subject: Re: how explain works
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