Replace NULL by data in other column - powequery, M

[rafaelsmoreno]

Hello everyone,

I have the following problem: In a timesheet database I have two columns with department name. One is the Department of Origin, e.g. IT. The other is the Charged Dept., e.g. Finance.

What happens is that the entry of a person who performed a task to its own department comes with a null value at charged department column, so I would like to apply a text replacement on it, in a way that if the charged department is null it would be replaced by the origin department.  

I can solve the problem by creating a new column and using If statements, but I would like to know if it is possible to apply Table.ReplaceValue (or something like that) to change the null entry to the value of the entry of the other column. 

I tried the following code, without success:

#"Replaced Value" = Table.ReplaceValue(#"PreviousStep",null, each [OriginDept],Replacer.ReplaceValue,{"ChargedDept"})

Thank you, guys, in advance!

[Greg_Deckler · Accepted solution]

There's probably a way to do that the way you are referring to but you could always do this:

    #"Added Conditional Column" = Table.AddColumn(#"Removed Duplicates", "Custom", each if [CcRecipients.Address] = null then [ToRecipients.Address] else [CcRecipients.Address])

Or, this:

    #"Replaced Value" = Table.ReplaceValue(#"Added Conditional Column",null,each [ToRecipients.Address],Replacer.ReplaceValue,{"CcRecipients.Address"})

That last one looks like what you were  going for, that worked for me as well.