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Crystal Formula-Null values

Posted on 2013-05-16
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Last Modified: 2013-05-28
Hello all,
I have a crystal formula as below:
When any one of the field is null the report doesnt display data.How can I rewrite or handle this.
{Patients.NsID}+ " / " +{Patients.Room} +" / "+{Patients.Bed}

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Question by:Star79
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2 Comments
 
LVL 101

Assisted Solution

by:mlmcc
mlmcc earned 1000 total points
ID: 39173015
Try this

Local StringVar strOutput;
If Not IsNull({Patients.NsID}) Then
    strOutput := {Patients.NsID} + " / "
Else
    strOutput  := " / ";

If Not IsNull({Patients.Room}) Then
    strOutput  := strOutput  + {Patients.Room} + " / "
Else
    strOutput  := strOutput  + " / ";

If Not IsNull({Patients.Bed}) Then
    strOutput  := strOutput  + {Patients.Bed};

strOutput

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mlmcc
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LVL 35

Accepted Solution

by:
James0628 earned 1000 total points
ID: 39174281
You could also go to File > "Report Options" and check the "Convert database null values to default" option and a null field will be replaced by an empty string.  That option will effect almost every formula in a report, so if you actually need to see nulls in some formulas, you may not want to use that option.

 More recent versions of CR also include an option in the formula editor to control how that specific formula treats nulls, so you could see if you have that option.

 James
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