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Sybase Stored Procedure Creation Doubt

Posted on 2012-03-26
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Last Modified: 2012-04-02
I have a general doubt regarding creating stored procedues which can substitue different values say null when 0 or 0.0 is passed as an argument. Right now i know to create a stored procedure which can use the default value only if nothing is passed to the parameter.

create proc myproc
          ( @myparam1  int = 0,
            @myparam2  float ,
            @myparam3  char(20) = "mydefault")

.... Here if i pass a 0 to the first parameter which is of an int type and if i pass 0.0 to the second parameter i want to substitute as null. But i dont want to do the same inside the main logic of the stored procedure. How can i achieve the same...
Please help...
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Question by:gaugeta
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3 Comments
 
LVL 13

Expert Comment

by:alpmoon
ID: 37768980
If I don't misunderstand what you want, you can only do it in the stored procedure by assigning null value:

if @myparam1 = 0
    select @myparam1 = null

Maybe you should explain what you mean with "inside the main logic of the stored procedure"
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Author Comment

by:gaugeta
ID: 37769243
@alpmoon:Thanks for the reply.
Just like we have the default values for the parameteres which get added if nothing is passed to the parameter,i was wondering if there was a method to specify an alternate value to a specific  parameter in the parameter definition stsge itself instead of embedding in the stored rocedure logic using if else.
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Accepted Solution

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alpmoon earned 2000 total points
ID: 37769549
I don't think that there is any other way of doing it other than embedding it in the stored procedure logic. You are looking for a syntax like 'case' for parameters, it is not available as it is designed only for the case parameter doesn't have a value.
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