Combine text ( without duplicating) based on another column

[AnthonyJoseph]

Hello Community,

I require some help in adding "Years in scope" column from power query.(in the screenshot below) Basically, I need a column that contains all the concatenated distinct year field values by client field. 

For example: 

1) Client 1 has data for the years 2020, 2021 and 2022 hence the concatenated column (Years in scope) has value "2020,2021,2022". (delimited with comma).

2) Client 2 has data for the years 2021 and 2022 hence the concatenated column has "2021,2022".

Hope this acheivable and would really appreciate any response or support.

Thanks,

AnthonyJoseph

[AnthonyJoseph · Accepted solution]

Thank you @ThxAlot . I was able to get the output however, is it possible to have them sorted to be in ascending order  For example: I am getting values like 2022,2020,2021 is there a way where I can get it in ascending order like 2020,2021,2022 other than by sorting the table by year?
Thanks,

AnthonyJoseph

[ThxAlot]

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMlTSUTIyMDICUoYGBkqxOnAhCIUhZIwqZACkTKBCRgizTFFEQGrNgCKxAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Client = _t, Year = _t, Revenue = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Client", Int64.Type}, {"Year", Int64.Type}, {"Revenue", Int64.Type}}),
    Grouped = Table.Group(Source, "Client", {"grp", each Table.AddColumn(_, "Yrs in scope", (r) => Text.Combine(List.Distinct([Year]),","))}),
    Table = Table.Combine(Grouped[grp])
in
    Table

A showcase of powerful Excel formulas,

[AnthonyJoseph · Accepted solution]

Thank you @ThxAlot . I was able to get the output however, is it possible to have them sorted to be in ascending order  For example: I am getting values like 2022,2020,2021 is there a way where I can get it in ascending order like 2020,2021,2022 other than by sorting the table by year?
Thanks,

AnthonyJoseph

[Anonymous · Accepted solution]

Hi @AnthonyJoseph ,

Make a little change to ThxAlot's code:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMlTSUTIyMDICUoYGBkqxOnAhCIUhZIwqZACkTKBCRgizTFFEQGrNgCKxAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Client = _t, Year = _t, Revenue = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Client", Int64.Type}, {"Year", Int64.Type}, {"Revenue", Int64.Type}}),
    Grouped = Table.Group(Source, "Client", {"grp", each Table.AddColumn(_, "Yrs in scope", (r) => Text.Combine(List.Sort(List.Distinct([Year])),","))}),
    Table = Table.Combine(Grouped[grp])
in
    Table

Best Regards,
Gao
Community Support Team

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