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rahulgade's avatar
rahulgade
Frequent Visitor
5 years ago
Solved

Create a new column based on matching condition

Hello All

I am trying to add a new column as " Previous Year Score" which will give me a score before two years for an indivudual school.

 

e.g  school "A" in 2019 scored "222" for English

I want to create a new column which shows  School "A" in 2017 scored 214 in English   

All the values are in the same table. 

 many thanks

 

 

Need Help
  • Icey's avatar
    Icey
    5 years ago

    Hi rahulgade ,

     

    Try this:

    Column = 
CALCULATE (
    SUM ( 'Gain Table (2)'[Mean] ),
    FILTER (
        'Gain Table (2)',
        'Gain Table (2)'[School Name] = EARLIER ( 'Gain Table (2)'[School Name] )
            && 'Gain Table (2)'[Assessment Area]
                = EARLIER ( 'Gain Table (2)'[Assessment Area] )
            && 'Gain Table (2)'[Calendar Year]
                = EARLIER ( 'Gain Table (2)'[Calendar Year] ) - 2
    )
)

     

     

     

    Best Regards,

    Icey

     

    If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

7 Replies

  • AlB's avatar
    AlB
    Community Champion
    5 years ago

    Hi rahulgade 

    This is simpler in DAX.  A new calculated column:

    New col =
VAR previousYear_ =
    CALCULATE (
        MAX ( Table1[Year] ),
        Table1[Year] < EARLIER ( Table1[Year] ),
        ALLEXCEPT ( Table1, Table1[School name] ),
        Table1[Assesment name]
    )
RETURN
    CALCULATE (
        DISTINCT ( Table1[Score] ),
        Table1[Year] = previousYear_,
        ALLEXCEPT ( Table1, Table1[School name] ),
        Table1[Assesment name]
    )

     

    Please mark the question solved when done and consider giving kudos if posts are helpful.

    Contact me privately for support with any larger-scale BI needs, tutoring, etc.

    Cheers 

     

    • rahulgade's avatar
      rahulgade
      Frequent Visitor
      5 years ago

      Hello AIB

      thank you for your reply, i am getting an error in my "assessment area" 

      Cannot convert value 'English' of type Text to type true/false. 

      • AlB's avatar
        AlB
        Community Champion
        5 years ago

        rahulgade 

        There was a mistake while copying the code

        ew col =
VAR previousYear_ =
    CALCULATE (
        MAX ( Table1[Year] ),
        Table1[Year] < EARLIER ( Table1[Year] ),
        ALLEXCEPT ( Table1, Table1[School name], Table1[Assesment name] )
    )
RETURN
    CALCULATE (
        DISTINCT ( Table1[Score] ),
        Table1[Year] = previousYear_,
        ALLEXCEPT ( Table1, Table1[School name], Table1[Assesment name] )
    )

        Please mark the question solved when done and consider giving kudos if posts are helpful.

         

        Contact me privately for support with any larger-scale BI needs, tutoring, etc.

         

        Cheers 

         

  • Jimmy801's avatar
    Jimmy801
    Community Champion
    5 years ago

    Hello rahulgade 

     

    you can use a formula like this

     

            (row)=> try Table.SelectRows(ChangeType, each [School name]=row[School name] and [Year]=row[Year]-2 and [Assessment name]= row[Assessment name])[Score]{0} otherwise null

     

     

    Here the complete code

     

    let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclTSUTIyMLQEUql5QMJQKVYnWskJIZpWBGKDRZ3RRI3Boi4I0dxEIGECFoWaaw4z1xTZXLioGbK5cFFzZHPhohZKsbEA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [#"School name" = _t, Year = _t, #"Assessment name" = _t, Score = _t]),
    ChangeType = Table.TransformColumnTypes(Source,{{"School name", type text}, {"Year", Int64.Type}, {"Score", Int64.Type}}),
    AddScoreBefore2Years = Table.AddColumn
    (
        ChangeType,
        "Previous2YearScore",
        (row)=> try Table.SelectRows(ChangeType, each [School name]=row[School name] and [Year]=row[Year]-2 and [Assessment name]= row[Assessment name])[Score]{0} otherwise null
    )
in
    AddScoreBefore2Years

     

     

    Copy paste this code to the advanced editor in a new blank query to see how the solution works.

    If this post helps or solves your problem, please mark it as solution (to help other users find useful content and to acknowledge the work of users that helped you)
    Kudoes are nice too

    Have fun

    Jimmy