excelpowerquerymget-transform
How to reference dynamic column names in Power Query (M language)
I was wondering if the there is a way to reference these three columns to create a summed column even though they change names?
The three columns vary depending on what quarter the underlying query in ran for (1-4)
The issue is when it runs for any quarter other than the one that was in the query when the table was created the addition column breaks because it can't find the columns named January, February, and March (because they are now 3 different months).
Solution
If you know all of the columns that won't change, you can refer to the record with all of the fixed columns removed from it, so you'll just be adding up your dynamic columns. The code looks like this (where you place the name of your fixed columns in the list).
List.Sum(Record.ToList(Record.RemoveFields(_, {"Fixed", "Column", "Name"})))
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