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clim2f88j's avatar
clim2f88j
Frequent Visitor
2 years ago

Index Column Based on ID and Date

Hello everyone,   I need to add an index column based on consumers ID and date.   Data: ID Date AAA 1/1/23 AAA 3/7/23 AAA 4/18/23 BBB 12/19/22 BBB 4/5/23 CCC 7/9/23 ...
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Anand24's avatar
Anand24
Super User
2 years ago

Hi clim2f88j ,
Create a calculated measure with below DAX:

Index =
RANKX (
    ALLEXCEPT('Table', 'Table'[ID]),
    CALCULATE ( MAX ( 'Table'[Date] ) ),
    ,
    ASC,
    DENSE
) - 1

Here's the result:

 

 

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  • clim2f88j's avatar
    clim2f88j
    Frequent Visitor
    2 years ago

    Thank you! That worked for the most part, but something i didn't account for is what if the dates are the same? 

    Right now if the dates are the same for the same ID then they are getting the same index number. My dates don't have a timestamp.

     

    If they have the same date/ID then i don't care which one gets the lower/higher index.

    • Anonymous's avatar
      Anonymous
      Not applicable
      2 years ago

      Hi clim2f88j ,

      Please try like:

      Index = 
RANKX (
    FILTER (
        ALL ( 'Table'[ID], 'Table'[Date] ),
        'Table'[ID] = EARLIER ( 'Table'[ID] )
    ),
    'Table'[Date],
    ,
    ASC,
    Dense
)

      Best Regards,
      Gao
      Community Support Team

       

      If there is any post helps, then please consider Accept it as the solution  to help the other members find it more quickly.
      If I misunderstand your needs or you still have problems on it, please feel free to let us know. Thanks a lot!

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      • clim2f88j's avatar
        clim2f88j
        Frequent Visitor
        2 years ago

        Thank you for helping me out but i get the following error with that DAX: EARLIER/EARLIEST refers to an earlier row context which doesn't exist.

         

        In your example, the AAA ID with the 3/7/2023 date have the same index. I need them to be different.

  • Sammyben's avatar
    Sammyben
    New Member
    2 years ago

    I have same question but I need to create by id then category and then by date. Hiw can I add also the category?

    • dufoq3's avatar
      dufoq3
      Community Champion
      2 years ago

      Hi Sammyben, something like this? (if no provide sample data and expected result please)

       

      Result:

      let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WcnR0VNJRcjYEEob6hvpGBkbGSrE6KOLG+uYY4kY4xEHqTfQNLRASTk5OcAuM9A0tQTJG6DIm+qYYOoxQxGMB", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [ID = _t, Category = _t, Date = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"ID", type text}, {"Date", type date}}, "en-US"),
    #"Sorted Rows" = Table.Sort(#"Changed Type",{{"ID", Order.Ascending}, {"Date", Order.Ascending}}),
    #"Grouped Rows" = Table.Group(#"Sorted Rows", {"ID", "Category"}, {{"Data", each Table.AddIndexColumn(_, "Index", 1, 1, Int64.Type), type table}}),
    #"Combined Tables" = Table.Combine(#"Grouped Rows"[Data])
in
    #"Combined Tables"