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Carl1985
New Member

Expression Error IF is Then else

Hello Everybody, 

 

i have a probem in writing an if function with power query. 

 

I have table with "delivery date wish customer" (gepl.Versanddatum) and "delivery date possible" (machbarer Termin)

 

Problem is that it could be that the "delivery date possible" is a empty cell because the date is equal to "delivery date wish customer".

 

Therefore i wrote the following formula with the formula editor from "add customer column"

 

if [#"xmr_vk_analyse (2).Machbarer Termin"] is null then Date.WeekOfYear [#"xmr_vk_analyse (2).gepl. Versanddatum"] else Date.WeekOfYear [#"xmr_vk_analyse (2).Machbarer Termin"]

 

This leads to the error message shon in the picture at the end of this contribution.

 

What is wrong with this formula? 

 

Thanks in advance for helping. Screenshot 2021-11-25 121158.png

1 ACCEPTED SOLUTION
mahoneypat
Super User
Super User

Please try this instead

 

if [#"xmr_vk_analyse (2).Machbarer Termin"] = null then Date.WeekOfYear ([#"xmr_vk_analyse (2).gepl. Versanddatum"]) else Date.WeekOfYear ([#"xmr_vk_analyse (2).Machbarer Termin"])

 

Pat





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View solution in original post

2 REPLIES 2
mahoneypat
Super User
Super User

Please try this instead

 

if [#"xmr_vk_analyse (2).Machbarer Termin"] = null then Date.WeekOfYear ([#"xmr_vk_analyse (2).gepl. Versanddatum"]) else Date.WeekOfYear ([#"xmr_vk_analyse (2).Machbarer Termin"])

 

Pat





Did I answer your question? Mark my post as a solution! Kudos are also appreciated!

To learn more about Power BI, follow me on Twitter or subscribe on YouTube.


@mahoneypa HoosierBI on YouTube


View solution in original post

Hey Mahoneypat, 

 

thanks for your help. It works. 

 

Question: Could you please explain to me why if to use " = null" instead of is? Or did I get it wrong and I have allways to use  "sings" of logical operations as "=;<;>" when I'm writting a IF statement?

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