Burndown Column

[uthall]

Hello,

I have a column (A) in a table that has numbers.

I want a new column (B) that is the result of the total sum of column A minus the row value for column A

A	B
3	107
4	106
2	108
5	105
7	103
89	21
110

Can someone help me do this in powerquery?

[Jimmy801 · Accepted solution]

Hello @uthall 

add a custom column with this formula. You have to replace the PreviousStep with the name of your previous step

List.Sum(YourPreviousStep[A])-[A]

Here the complete code to copy into the advanced editor

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMlaK1YlWMgGTRmDSFEyag0kLS6XYWAA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [A = _t]),
    YourPreviousStep = Table.TransformColumnTypes(Source,{{"A", Int64.Type}}),
    #"Added Custom" = Table.AddColumn(YourPreviousStep, "B", each List.Sum(YourPreviousStep[A])-[A], type number)
in
    #"Added Custom"

Copy paste this code to the advanced editor in a new blank query to see how the solution works.

If this post helps or solves your problem, please mark it as solution (to help other users find useful content and to acknowledge the work of users that helped you)
Kudoes are nice too

Have fun

Jimmy

[V-pazhen-msft · Accepted solution]

@uthall 

Basically you can just add a custom column on top of the previous step (underlined) using the following code:

Result:

Paul Zheng _ Community Support Team
If this post helps, please Accept it as the solution to help the other members find it more quickly.

[Jimmy801 · Accepted solution]

Hello @uthall 

add a custom column with this formula. You have to replace the PreviousStep with the name of your previous step

List.Sum(YourPreviousStep[A])-[A]

Here the complete code to copy into the advanced editor

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMlaK1YlWMgGTRmDSFEyag0kLS6XYWAA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [A = _t]),
    YourPreviousStep = Table.TransformColumnTypes(Source,{{"A", Int64.Type}}),
    #"Added Custom" = Table.AddColumn(YourPreviousStep, "B", each List.Sum(YourPreviousStep[A])-[A], type number)
in
    #"Added Custom"

Copy paste this code to the advanced editor in a new blank query to see how the solution works.

If this post helps or solves your problem, please mark it as solution (to help other users find useful content and to acknowledge the work of users that helped you)
Kudoes are nice too

Have fun

Jimmy

[uthall]

Thnaks for this.

It seems awfully complicated tho, isnt there a simpler way of doing this using a column and powerquery?

[Jimmy801]

Hello @uthall 

adding a custom column and putting my first code is awfully complicated? It's the most basic and easiest thing to do in power query. The second code is only to show a whole example if somebody would like to see it working as a whole, without having a dataset ready

If this post helps or solves your problem, please mark it as solution (to help other users find useful content and to acknowledge the work of users that helped you)
Kudoes are nice too

Have fun

Jimmy