How can I accomplish SUMIF and removing duplicates to create Unique in M language

[acerNZ]

Hi Experts

I did search for this solution in forum and when I do group by and sum, it is giving me additional column and sum of each number which is self 

https://community.powerbi.com/t5/Desktop/SUMIF-in-Query-Editor-on-Power-BI-Desktop/td-p/135150 

Data files here: sumifunique.xls

I could able to extract data using excel SUMIF and then I use remove duplicates to get output in the third Tab. Please may I know how to accomplish this in Query Editor?

https://github.com/acerNZ/PowerBI.git  

I tried to use list.sum but could not understand the syntax well. Please appreciate your help

Raw Data:

With SumIF:

Final Output Expected:

[acerNZ]

@Jimmy801  Thank you very much, worked like charm in this sheet and I replicated this in work sheet, worked well. I made couple of mistakes. 

[Jimmy801 · Accepted solution]

Hello @acerNZ 

your are basically grouping by Product ID and applying a sum function to the sales column. All other columns you are showing is nothing else then the first value found on each group. I don't know if you need  that information. However I'm showing you an example with Table.Group with 2 functions in it. First is sum of sales-column and the other is the first value found in the group. You can enhance it by adding a new function. Here the code

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("RcyxDQAwCAPBXVyngADTIPZfI4ldpEAvHZK74VhwM+YeM6ux5S8h3/SQ503Kg55/p+RJr7/jpkdh5gA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [S.No = _t, #"Product ID" = _t, Sales = _t, Date = _t, #"Invoice ID" = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"S.No", Int64.Type}, {"Product ID", Int64.Type}, {"Sales", Int64.Type}, {"Date", type text}, {"Invoice ID", Int64.Type}}),
    #"Grouped Rows" = Table.Group
    (
        #"Changed Type", 
        {"Product ID"}, 
        {
            {
                "Sum of sales", 
                each List.Sum([Sales]), 
                type number
            },
            {
                "Invoice", 
                each List.First([Invoice ID]), 
                type number
            }
        }
    )
in
    #"Grouped Rows"

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

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Kudoes are nice too

Have fun

Jimmy