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To: Petru Ghita <petrutz@venaver.info>
cc: Greg Stark <stark@mit.edu>,
	pgsql-sql mailing list <pgsql-sql@postgresql.org>
Subject: Re: Does IMMUTABLE property propagate? 
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	<407d949e1003060645i408e0648te67dfd722172f76a@mail.gmail.com>
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Comments: In-reply-to Petru Ghita <petrutz@venaver.info>
	message dated "Sat, 06 Mar 2010 17:16:45 +0100"
Date: Sat, 06 Mar 2010 16:31:55 -0500
Message-ID: <4150.1267911115@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
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Petru Ghita <petrutz@venaver.info> writes:
> "..immediately replaced with the function value" doesn't mean that the
> results of a previously evaluated function for the same parameters are
> stored and reused?

No, it means what it says: the function is executed once and replaced
with a constant representing the result value.

			regards, tom lane