PROBLEMS WITH IF AND DATEDIFF

[Labraham36]

Hello friends ! I have a question: I need to make a DAX function that shows me an interval of days between two dates and at the same time filters the values ​​since I don't want it to show me this value if a certain field is empty. The function I have created is:

Dias_Vencimiento = IF('Consulta SLA'[dld_chk_codigo] = "",DATEDIFF('Consulta SLA'[FechaVencimiento_ML].[Date],TODAY(),DAY),"")

However, when I run it I get the following error:"Expressions that produce Variant data types cannot be used to define calculated columns." If I only do the "DATEDIFF" function I have no problems, but there is no way to filter it. Do you have any idea that I'm
doing wrong? I understand that it should be possible ... Thank you!

[harshnathani · Accepted solution]

Hi @Labraham36 ,

Try this

Dias_Vencimiento = IF('Consulta SLA'[dld_chk_codigo] = "",DATEDIFF('Consulta SLA'[FechaVencimiento_ML].[Date],TODAY(),DAY),BLANK())

or 

Dias_Vencimiento = IF('Consulta SLA'[dld_chk_codigo] = "",DATEDIFF('Consulta SLA'[FechaVencimiento_ML].[Date],TODAY(),DAY),0)

DATEDIFF returns an interger. Here in your formula you are trying to return an integer as well as text hence the  Expressions that produce Variant data types cannot be used to define calculated columns." error

Regards,
Harsh Nathani
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[Labraham36]

Thank you very much friend ! You're the best ! I was going crazy with this !!!!!