Connect 2 column in power query but the result turn to null

[Anonymous]

I want to create new column by using custom column function in Power Query Editor.

New_Column = [Column A] & "-" & [Column B]  

when the [Comlumn A] is null and the [Column B] is "Good", the result should be "-Good".

But when I used the formular as above, the result was turned that when one of these columns is null, the result of New_Column is null.

ex. [Comlumn A] is null and the [Column B] is "Good", the result was null.

[Comlumn A] is null and the [Column B] is null, the result was null.

[Comlumn A] is "Good" and the [Column B] is null, the result was null.

Please help me to figure it out,

Thank you 😻

[v-cgao-msft]

Hi @Anonymous ,

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Gao
Community Support Team

[AlexisOlson · Accepted solution]

@ImkeF's solution is great if you don't want a hyphen when one column is null.

If you want the hyphen (as in your specified example), then the coalesce operator is handy if you don't want to replace nulls with empty strings as a separate step or write out the equivalent if statements.

([Column A] ?? "") & "-" & ([Column B] ?? "")

[Anonymous]

Thank you for this solution! 😍

[ronrsnfld]

In general, null <operator> value  => null

@ImkeF solution is an excellent one.  You could also use an If statement to convert the null to  "".

[ImkeF]

Hi @Anonymous ,
try using this instead:

Text.Combine( { [Column A], [Column B] },  "-" )

[Anonymous]

Thank you so much!