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

Find everything you need to get certified on Fabric—skills challenges, live sessions, exam prep, role guidance, and more. Get started

Reply
abehrmann
Helper II
Helper II

Replace null values with contents from another column

 

I am attempting to replace the null values with the values from completion note date in the far left. 

 

If possible i would like to use the exitsting completion date column instead of creating a new one. 

 

Any suggestions 

 

 

CompletionNotePIC.PNG 

1 ACCEPTED SOLUTION
Anonymous
Not applicable

If a measure is sutible for your needs then a simple measure liek the following would work. Replace max with whatever aggregation you need

 

 

measure =
VAR _Column1 =
    MAX ( Column1 )
RETURN
    IF ( ISBLANK ( _Column1 ), MAX ( Column2 ), _Column1 )

If a measure is not sutible then the easiest way is to add a new column either in the model or in the Query Editor.

 

The DAX version would be 

 

Column3 =
IF ( ISBLANK ( Column1 ), Column2, Column1 )

The Power Query Version would be

 

 

if [Column1] = null then [Column2] else [Column1]

Then remove the old column. With Power Query you can do it in one step without adding a new column but it is not possible with the UI you need to use the advanced editor. I have included an example below, the key step is 

Table.ReplaceValue(#"Changed Type",null,each [Column1],Replacer.ReplaceValue,{"Column2"})

 

 

let
    Source = Table.FromRows({{1,null},{2,2},{3,3},{null,4},{5,null}}),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Column1", Int64.Type}, {"Column2", Int64.Type}}),
    #"Replaced Value" = Table.ReplaceValue(#"Changed Type",null,each [Column1],Replacer.ReplaceValue,{"Column2"}),
    #"Changed Type1" = Table.TransformColumnTypes(#"Replaced Value",{{"Column2", Int64.Type}})
in
    #"Changed Type1"

 

 

 

View solution in original post

1 REPLY 1
Anonymous
Not applicable

If a measure is sutible for your needs then a simple measure liek the following would work. Replace max with whatever aggregation you need

 

 

measure =
VAR _Column1 =
    MAX ( Column1 )
RETURN
    IF ( ISBLANK ( _Column1 ), MAX ( Column2 ), _Column1 )

If a measure is not sutible then the easiest way is to add a new column either in the model or in the Query Editor.

 

The DAX version would be 

 

Column3 =
IF ( ISBLANK ( Column1 ), Column2, Column1 )

The Power Query Version would be

 

 

if [Column1] = null then [Column2] else [Column1]

Then remove the old column. With Power Query you can do it in one step without adding a new column but it is not possible with the UI you need to use the advanced editor. I have included an example below, the key step is 

Table.ReplaceValue(#"Changed Type",null,each [Column1],Replacer.ReplaceValue,{"Column2"})

 

 

let
    Source = Table.FromRows({{1,null},{2,2},{3,3},{null,4},{5,null}}),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Column1", Int64.Type}, {"Column2", Int64.Type}}),
    #"Replaced Value" = Table.ReplaceValue(#"Changed Type",null,each [Column1],Replacer.ReplaceValue,{"Column2"}),
    #"Changed Type1" = Table.TransformColumnTypes(#"Replaced Value",{{"Column2", Int64.Type}})
in
    #"Changed Type1"

 

 

 

Helpful resources

Announcements
July 2024 Power BI Update

Power BI Monthly Update - July 2024

Check out the July 2024 Power BI update to learn about new features.

PBI_Carousel_NL_June

Fabric Community Update - June 2024

Get the latest Fabric updates from Build 2024, key Skills Challenge voucher deadlines, top blogs, forum posts, and product ideas.

Top Solution Authors