PowerBI custom column

[mdomin35]

I am trying to create a column that has a sum value of column Amort Cost "AC" by Date "DA, and by Acccount Number"AN". How am I able to do this? Would a new measure be easier? Appreciate any feed back. Thanks

[Anonymous · Accepted solution]

Hi,

@Greg_Deckler , Thanks for your concern about the problem, and i want to offer some more infotmation for user to refer to.

hello @mdomin35 , you can use the following solutions to  implement it.

1.Use group by.

Output

2.You can add a custom column

List.Sum(Table.SelectRows(#"Changed Type"(your last step name),(x)=>x[AN]=[AN] and x[DA]=[DA])[AC])

Output

And you can put the following code to advanced editor in power query to refer to.

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WSlTSUTIyMDLRN9Q3BDINDZRidVBEjcBMdFGQWmMMUVMg0wQimoSq1hRDFGSuGVa15hiiIHMtIKLJqGotMUSNEL5AU2uEIWoK9UUsAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [AN = _t, DA = _t, AC = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"AN", type text}, {"DA", type date}, {"AC", Int64.Type}}),
    #"Added Custom" = Table.AddColumn(#"Changed Type", "Custom", each List.Sum(Table.SelectRows(#"Changed Type",(x)=>x[AN]=[AN] and x[DA]=[DA])[AC]))
in
    #"Added Custom"

Best Regards!

Yolo Zhu

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[Greg_Deckler]

@mdomin35 Sorry, having trouble following, can you post sample data as text and expected output?
Not really enough information to go on, please first check if your issue is a common issue listed here: https://community.powerbi.com/t5/Community-Blog/Before-You-Post-Read-This/ba-p/1116882

Also, please see this post regarding How to Get Your Question Answered Quickly: https://community.powerbi.com/t5/Community-Blog/How-to-Get-Your-Question-Answered-Quickly/ba-p/38490

The most important parts are:
1. Sample data as text, use the table tool in the editing bar
2. Expected output from sample data
3. Explanation in words of how to get from 1. to 2.