Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

Enhance your career with this limited time 50% discount on Fabric and Power BI exams. Ends August 31st. Request your voucher.

Reply
jaryszek
Post Prodigy
Post Prodigy

Create Variable to know if value is within table column

Hi,

 

i have table with column "Col3" and i can have there nulls or some string. 

And what i want to check if in Col3 there is everywhere "null" and put it into variable. 

 

Something like if Col3.Contains only nulls then 1 else 0. (so if 1 row is different than null - put 0). 

 

How can i do this? 
I am using Power Query, not power BI. 

Please help,
Jacek

1 ACCEPTED SOLUTION
AlexisOlson
Super User
Super User

You can add a custom column that references the entire column by writing #"Previous Step Name"[Col3].

if List.NonNullCount(#"Previous Step Name"[Col3]) = 0 then 1 else 1

Replace #"Previous Step Name" with the appropriate reference (e.g. it might be #"Changed Type" or Source or #"Filtered Rows").

View solution in original post

2 REPLIES 2
AlexisOlson
Super User
Super User

You can add a custom column that references the entire column by writing #"Previous Step Name"[Col3].

if List.NonNullCount(#"Previous Step Name"[Col3]) = 0 then 1 else 1

Replace #"Previous Step Name" with the appropriate reference (e.g. it might be #"Changed Type" or Source or #"Filtered Rows").

Thank you!!

 

Jacek

Helpful resources

Announcements
July 2025 community update carousel

Fabric Community Update - July 2025

Find out what's new and trending in the Fabric community.

July PBI25 Carousel

Power BI Monthly Update - July 2025

Check out the July 2025 Power BI update to learn about new features.

Join our Fabric User Panel

Join our Fabric User Panel

This is your chance to engage directly with the engineering team behind Fabric and Power BI. Share your experiences and shape the future.