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How to create a function/procedure which can take optional parameter?

145998Nov 26 2002 — edited Nov 26 2002
Hi,
I want to create a function or a procedure which can take optional parameters. For example, I want to create fun1() or fun1(param1) like this. Only one function will act differently when different number of parameters are passed to it. Something like the substr() function in oracle. It can be called with 2 parameters, as well as three parameters.
Thanks in advance,
Kiran

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Locked on Dec 24 2002
Added on Nov 26 2002
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