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parameter info?

From: Andrew Dunstan <andrew(at)dunslane(dot)net>
To: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: parameter info?
Date: 2013-02-01 01:05:43
Message-ID: 510B14E7.9020907@dunslane.net (view raw or flat)
Thread:
Lists: pgsql-hackers
What's the best way for me to find out if a given parameter of a 
function is a constant? The context is that it's expensive to process, 
and in most cases will in fact be a constant, so if it is in fact a 
constant I'd like to process it once and stash the results.

cheers

andrew


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