Change your Computed column to include the "(IFNULL(arg1,arg2,arg3))" function
something like:

((IfNull(houseno,null,(ctxt(HouseNo)))) & Streetname)


----- Original Message ----- 
From: "Robert Rugilo" <[EMAIL PROTECTED]>
To: "RBG7-L Mailing List" <[email protected]>
Sent: Wednesday, March 02, 2005 11:55 AM
Subject: [RBG7-L] - Computed column


I have a table which contains a field called HouseNo int, StreetName Text
and a computed column named FullAddress (computed   as  ((ctxt(houseno)) &
Streetname)

whenever the field of houseno is null the full address results is      0
streetname    it seems that when we compute the null becames a 0

any ideas ?


Robert Rugilo

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