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techsupport
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Quote techsupport Replybullet Topic: Formula handling Nulls?
    Posted: 08 Jul 2016 at 9:30am
Currently have the following formula:

if {Address.SubUnitTypeId} = 0 or IsNull({Address.SubUnitTypeId}) or IsNull({Address.SubUnit}) or IsNull({AddressSubUnit.Description}) then {Address.StreetOne} else
if {Address.SubUnitTypeId} <> 0 then {Address.StreetOne} + '  ' + {@SubUnit}


however when the Nulls are True, it is NOT showing the Address.StreetOne
I am unsure why?
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Thank you very much!
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DBlank
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Quote DBlank Replybullet Posted: 11 Jul 2016 at 3:17am
the NULL has to always be the first condition so in your first two conditions
"if {Address.SubUnitTypeId} = 0 or IsNull({Address.SubUnitTypeId})"
it hits the null and evaluates for = 0 first and then stops because it it does not know how to handle the null.
I find it easier to just use the option in the formula editor to 'use default values for nulls' then you can just use the "<> 0" or "= 0"

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