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joshua1990's avatar
joshua1990
Icon for Post Prodigy rankPost Prodigy
4 years ago
Solved

TRUE FALSE if group contains value

Hi experts! I would like to get a TRUE/FALSE if a group contains a specific value. The structure is like this: Order Nr Value TRUE / FALSE 100 A TRUE 100 B TRUE 102 A FALSE ...
Need Help
  • ronrsnfld's avatar
    ronrsnfld
    4 years ago

    Group by Order; then aggregate by the testing if the Value in each group contains "B":

     

    let

//change next line to reflect your actual source of data
    Source = Excel.CurrentWorkbook(){[Name="Table5"]}[Content],
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Order Nr", Int64.Type}, {"Value", type text}}),


    #"Grouped Rows" = Table.Group(#"Changed Type", {"Order Nr"}, {
        {"Grouped", each _, type table [Value=nullable text]},
        {"TRUE/FALSE", each List.Contains([Value],"B"), type logical}
        }),
    
    #"Expanded Grouped" = Table.ExpandTableColumn(#"Grouped Rows", "Grouped", {"Value"}, {"Value"})
in
    #"Expanded Grouped"

     

     

     

Vijay_A_Verma's avatar
Vijay_A_Verma
Icon for Most Valuable Professional rankMost Valuable Professional
4 years ago

Below is an alternative solution. Put following in a custom column (Replace #"Changed Type" with your previous step)

= List.Contains(List.Zip({#"Changed Type"[Order Nr],#"Changed Type"[Value]}),{[Order Nr],"B"})

Marginal performance to the tune of 10-20% can be gained by buffering the lists if you have got thousands of records. These 2 lists are - #"Changed Type"[Order Nr] and #"Changed Type"[Value].