help regarding function valatality categories

From: siva kiran balijepalli <b(dot)sivakiran(at)gmail(dot)com>
To: pgsql-novice(at)postgresql(dot)org
Subject: help regarding function valatality categories
Date: 2011-03-14 08:56:12
Message-ID: AANLkTikxjerREpXFhXTP3efXk+GU2rG4Ek+t71zHntv3@mail.gmail.com
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Hi all,

can anybody explain with simple example regarding the function valatality
categories such as VOLATILE/STABLE/IMMUTABLE

I have gone throught the documnetation but didn't had better understanding?

please reply

regards
siva kiran.B

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