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JOHN14400's avatar
JOHN14400
Frequent Visitor
6 years ago
Solved

rank index custom columns query

Hello

 

I would like create in power query  a custom column in order to have rank index max 1 to 3 . I explain with a list of first name

Name          Index

ALBERT           1

ROGER           2

GILBERT         3

SOPHIE          1

THERESE        2

MARIE           3

JEAN             1

PAUL             2

etc and so on

what is the instructions in language M ?

thanks for your help

 

Need Help
  • ziying35's avatar
    ziying35
    6 years ago

    Hi, JOHN14400 

     

    let
    Source = Table.FromRecords(Json.Document(Binary.Decompress(Binary.FromText("i65W8kvMTVWIKTUwSDTASilZKTn6OLkGhUC4uEilWh2izAryd3cNoo5R7p543UWsMcH+AR6ertRxUoiHa5BrME7DiDXG1zGIWi7ycnX0w28SaeYFOIb6EGdeLAA=",BinaryEncoding.Base64),Compression.Deflate))),
    addidx = Table.AddIndexColumn(Source,"Index"),
    result = Table.TransformColumns(addidx, {"Index", each Number.Mod(_, 3)+1, type number})
in
    result

    If my code solves your problem, mark it as a solution

     

  • ziying35's avatar
    ziying35
    6 years ago

    JOHN14400 

    According to the description of your problem, modify the code as follows. But I see that you are expecting the result to be a change every three lines, in which case the loop number doesn't need to be added. Just start directly with the split step.

     

     

    let
    Source = Table.FromRecords(Json.Document(Binary.Decompress(Binary.FromText("i65W8kvMTVWyUnL0cXINCokpNTBINMBFKtXqwNUH+bu7BhGv3N0Tr/nISoP9Azw8XYk3OsTDNcg1GKcGZKW+jkGkmOzl6uiHXzWmngDHUB/i9MQCAA==",BinaryEncoding.Base64),Compression.Deflate))),
    addidx = Table.AddIndexColumn(Source,"Index"),
    mod = Table.TransformColumns(addidx, {"Index", each Number.Mod(_, 3)+1, type number}),
    split = Table.Split(mod, 3),
    trans = List.Transform(split, each Table.PromoteHeaders(Table.Transpose(Table.ReorderColumns(_,{"Index", "Name"})))),
    result = Table.Combine(trans)
in
    result

     

     

    But that would require a code change, so you'll try with code above

6 Replies

  • ziying35's avatar
    ziying35
    Icon for Impactful Individual rankImpactful Individual
    6 years ago

    Hi, JOHN14400 

     

    let
    Source = Table.FromRecords(Json.Document(Binary.Decompress(Binary.FromText("i65W8kvMTVWIKTUwSDTASilZKTn6OLkGhUC4uEilWh2izAryd3cNoo5R7p543UWsMcH+AR6ertRxUoiHa5BrME7DiDXG1zGIWi7ycnX0w28SaeYFOIb6EGdeLAA=",BinaryEncoding.Base64),Compression.Deflate))),
    addidx = Table.AddIndexColumn(Source,"Index"),
    result = Table.TransformColumns(addidx, {"Index", each Number.Mod(_, 3)+1, type number})
in
    result

    If my code solves your problem, mark it as a solution

     

    • JOHN14400's avatar
      JOHN14400
      Frequent Visitor
      6 years ago

      THanks  for your solution via the function Mod. But in final way , i Would like to pivot in order to have the first name like a values.

      I have a message error like (

      There were too many elements in the enumeration to complete the operation).

      Yet there is only 8 rows

       

       

       

       

    • ziying35's avatar
      ziying35
      Icon for Impactful Individual rankImpactful Individual
      6 years ago

      JOHN14400 

      According to the description of your problem, modify the code as follows. But I see that you are expecting the result to be a change every three lines, in which case the loop index number doesn't need to be added. Just start directly with the split step.

       

       

       

      let
    Source = Table.FromRecords(Json.Document(Binary.Decompress(Binary.FromText("i65W8kvMTVWyUnL0cXINCokpNTBINMBFKtXqwNUH+bu7BhGv3N0Tr/nISoP9Azw8XYk3OsTDNcg1GKcGZKW+jkGkmOzl6uiHXzWmngDHUB/i9MQCAA==",BinaryEncoding.Base64),Compression.Deflate))),
    addidx = Table.AddIndexColumn(Source,"Index"),
    mod = Table.TransformColumns(addidx, {"Index", each Number.Mod(_, 3)+1, type number}),
    split = Table.Split(mod, 3),
    trans = List.Transform(split, each Table.PromoteHeaders(Table.Transpose(Table.ReorderColumns(_,{"Index", "Name"})))),
    result = Table.Combine(trans)
in
    result

       

       

       

       

    • ziying35's avatar
      ziying35
      Icon for Impactful Individual rankImpactful Individual
      6 years ago

      JOHN14400 

      According to the description of your problem, modify the code as follows. But I see that you are expecting the result to be a change every three lines, in which case the loop number doesn't need to be added. Just start directly with the split step.

       

       

      let
    Source = Table.FromRecords(Json.Document(Binary.Decompress(Binary.FromText("i65W8kvMTVWyUnL0cXINCokpNTBINMBFKtXqwNUH+bu7BhGv3N0Tr/nISoP9Azw8XYk3OsTDNcg1GKcGZKW+jkGkmOzl6uiHXzWmngDHUB/i9MQCAA==",BinaryEncoding.Base64),Compression.Deflate))),
    addidx = Table.AddIndexColumn(Source,"Index"),
    mod = Table.TransformColumns(addidx, {"Index", each Number.Mod(_, 3)+1, type number}),
    split = Table.Split(mod, 3),
    trans = List.Transform(split, each Table.PromoteHeaders(Table.Transpose(Table.ReorderColumns(_,{"Index", "Name"})))),
    result = Table.Combine(trans)
in
    result

       

       

      But that would require a code change, so you'll try with code above

      • JOHN14400's avatar
        JOHN14400
        Frequent Visitor
        6 years ago

        Hello ziying 35

        Thanks for yours fasters answers it works !