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AdityaG
Helper I
Helper I

How to do addition of numbers to previous columns?

Hi community,

 

I would like to have the following input to be transformed in PowerQuery:

Starting number of output is defined, let's say, 400

 

Year2023202420252026202720282029203020312032
Input0251013004
Output400402407408408409412412412416

 

It basically increments the starting number by the input number.

 

Can anyone help in getting DAX formula in Power Query for the above result.

 

Currently, I am just adding a custom column where output columns are [Year.1]

 

For eg. for column 2024.1, the expression is:

=[2024]+[2023.1]

For 2025.1,

=[2025]+[2024.1]

 

But this seems way to tedious considering I have high amount of data.

 

Can anyone help in providing DAX formula for the above results.

1 ACCEPTED SOLUTION
AlienSx
Super User
Super User

Hi @AdityaG 

let
    data_table = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45W8swrKC1R0lEyAGIjIDYFYkMoH0QbQ9kgbKIUGwsA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Year = _t, #"2023" = _t, #"2024" = _t, #"2025" = _t, #"2026" = _t, #"2027" = _t, #"2028" = _t, #"2029" = _t, #"2030" = _t, #"2031" = _t, #"2032" = _t]),
    source = Table.TransformColumnTypes(data_table,{{"Year", type text}, {"2023", type number}, {"2024", type number}, {"2025", type number}, {"2026", type number}, {"2027", type number}, {"2028", type number}, {"2029", type number}, {"2030", type number}, {"2031", type number}, {"2032", type number}}),
    starting_number = 400,
    input = Table.ToRows(source){0},
    input_list = List.Buffer(List.Skip(input)),
    count = List.Count(input_list),
    output_list = 
        List.Generate(
            () => [out = starting_number, i = 0],
            (x) => x[i] <= count,
            (x) => [out = x[out] + input_list{x[i]}, i = x[i] + 1],
            (x) => x[out]
        ),
    z = Table.FromRows({input, {"Output"} & List.Skip(output_list)}, Table.ColumnNames(source))
in
    z

View solution in original post

1 REPLY 1
AlienSx
Super User
Super User

Hi @AdityaG 

let
    data_table = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45W8swrKC1R0lEyAGIjIDYFYkMoH0QbQ9kgbKIUGwsA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Year = _t, #"2023" = _t, #"2024" = _t, #"2025" = _t, #"2026" = _t, #"2027" = _t, #"2028" = _t, #"2029" = _t, #"2030" = _t, #"2031" = _t, #"2032" = _t]),
    source = Table.TransformColumnTypes(data_table,{{"Year", type text}, {"2023", type number}, {"2024", type number}, {"2025", type number}, {"2026", type number}, {"2027", type number}, {"2028", type number}, {"2029", type number}, {"2030", type number}, {"2031", type number}, {"2032", type number}}),
    starting_number = 400,
    input = Table.ToRows(source){0},
    input_list = List.Buffer(List.Skip(input)),
    count = List.Count(input_list),
    output_list = 
        List.Generate(
            () => [out = starting_number, i = 0],
            (x) => x[i] <= count,
            (x) => [out = x[out] + input_list{x[i]}, i = x[i] + 1],
            (x) => x[out]
        ),
    z = Table.FromRows({input, {"Output"} & List.Skip(output_list)}, Table.ColumnNames(source))
in
    z

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