From: | Keith Worthington <KeithW(at)NarrowPathInc(dot)com> |
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To: | PostgreSQL Perform <pgsql-performance(at)postgresql(dot)org> |
Subject: | view of view |
Date: | 2005-12-08 02:47:28 |
Message-ID: | 43979EC0.1060400@NarrowPathInc.com |
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Thread: | |
Lists: | pgsql-performance |
Hi All,
I am working on an application that uses PostgreSQL. One of the
functions of the application is to generate reports. In order to keep
the code in the application simple we create a view of the required data
in the database and then simply execute a SELECT * FROM
view_of_the_data; All of the manipulation and most of the time even the
ordering is handled in the view.
My question is how much if any performance degradation is there in
creating a view of a view?
IOW if I have a view that ties together a couple of tables and
manipulates some data what will perform better; a view that filters,
manipulates, and orders the data from the first view or a view that
performs all the necessary calculations on the original tables?
--
Kind Regards,
Keith
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