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Anonymous
Not applicable

expressions that yield variant data-type

i am trying to write a simple expression but it throws an error saying "expressions that yield variant data-type cannot be used with calculated columns". 

Code : If(IsBlank(Date Column), Whole Number Column = -1, DateA Column - Date B Column)

 

Could you kindly help me resolve this issue.

Any help would be appreciated.

7 REPLIES 7
parry2k
Super User
Super User

@Anonymous seems like you are returning -1 or different between dates, correct?

 

may be use DATEDIFF column in your else expression.



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Anonymous
Not applicable

@parry2k  tried using the expression still getting the same error. See the code below :

Delay Days = IF(ISBLANK(Merge1[Finance Completed Activity Repository.Created]),Merge1[Delay Status Value]=-1,DATEDIFF(Merge1[Correct Activity Date],Merge1[Finance Completed Activity Repository.Created],DAY))

@Anonymous in your true conditionl, you are return true or false but in else condition you are returning number, so you have to change your first conditon to return number instead of true/false



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Anonymous
Not applicable

@parry2k in the true condition i am trying to set a columns value to -1 but it keeps throwing that error. anything that i am missing here?

@Anonymous that is comparing value not assigning value, change like this

 

 

Whole Number Column = If(IsBlank(Date Column),  -1, DateA Column - Date B Column)



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Anonymous
Not applicable

@parry2k so i am assigning the value of date diff to A column and within the true condition i am trying to set another columns value.

 

Column A = if(isblank(Date Column),Column B = -1 , Date Diff(A-B,Day))

@Anonymous you cannot do that. you have to have two seperate new columns and assign values as per your business logic.



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