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nursyeha001's avatar
nursyeha001
Regular Visitor
6 years ago
Solved

Translating the IF statement into DAX

I have an easy-sounding issue, in theory but am trying to translate this into DAX logic. I'm trying to translate this logic using a nested IF statement where, it reads for every year and will take th...
  • MartynRamsden's avatar
    MartynRamsden
    6 years ago

    Hi nursyeha001 

     

    Try adding a column with the expression below.

     

    Valid Result = 
VAR RowFirstName = 'Table'[First Name]
VAR RowLastName = 'Table'[Last Name]
VAR RowYear = 'Table'[Year]
VAR NoOfSubmissions = 
CALCULATE ( 
    COUNTROWS ( 
        FILTER ( 
            ALL ( 'Table' ),
            'Table'[First Name] = RowFirstName
            && 'Table'[Last Name] = RowLastName
            && 'Table'[Year] = RowYear
        )
    )    
)
VAR Result = 
SWITCH ( 
    TRUE(),
    NoOfSubmissions > 1 && 'Table'[Assignments] = "Amended Submission", "Y",
    NoOfSubmissions = 1, "Y",
    "N"
)
RETURN Result

     

    Note: this expression won't work if you have 2 or more people with the same name in the same year.

     

    Best regards,

    Martyn

  • Nathaniel_C's avatar
    Nathaniel_C
    6 years ago

    Hi nursyeha001 , MartynRamsden ,
    This also will not work if there are more than a max of two entries per year per person. For instance if you had two "Amended Submissions". So, as MartynRamsden  points out if two people have the same name this will not work, my suggestion is that you include in your table a unique identifier (an ID), and that you also have month, day, year to figure out which is the latest submission. Or as an alternative to a full date, you could have the submissions numbered, and we would take the maximum submission per unique ID.


    Let me know if you have any questions.

    If this solves your issues, please mark it as the solution, so that others can find it easily. Kudos 👍are nice too.
    Nathaniel

Nathaniel_C's avatar
Nathaniel_C
Community Champion
6 years ago

Hi nursyeha001 ,
Your example does not seem to follow your written example. ATR? is not mentioned in the written portion. I also cannot tell if you have multiple tables and the relationships.

If you would share your pbix, or dummy up some values in Excel both for current and expected data. Please copy and paste them into your post, rather than doing a picture, we may be able to help you. 

Please read this post to get your question answered more quickly:

https://community.powerbi.com/t5/Community-Blog/How-to-Get-Your-Question-Answered-Quickly/ba-p/38490


Let me know if you have any questions.

If this solves your issues, please mark it as the solution, so that others can find it easily. Kudos 👍are nice too.
Nathaniel

nursyeha001's avatar
nursyeha001
Regular Visitor
6 years ago

Hi Nathaniel,

 

It's all in one table that I'm importing into Power BI and need to transform using DAX to create a column, Valid Record, that for each person, looks at the Assignments submitted for the Year and takes the latest version indicated with  Y, any earlier versions will be indicated as a N.

 

Sample Data:

First NameLast NameYearAssignmentsValid Record
PeterParker2015SubmissionN
PeterParker2015Amended SubmissionY
TonyStark2017SubmissionY
BruceWayne2018SubmissionN
BruceWayne2018Amended SubmissionY

 

Thanks!

Nur

  • MartynRamsden's avatar
    MartynRamsden
    Solution Sage
    6 years ago

    Hi nursyeha001 

     

    Try adding a column with the expression below.

     

    Valid Result = 
VAR RowFirstName = 'Table'[First Name]
VAR RowLastName = 'Table'[Last Name]
VAR RowYear = 'Table'[Year]
VAR NoOfSubmissions = 
CALCULATE ( 
    COUNTROWS ( 
        FILTER ( 
            ALL ( 'Table' ),
            'Table'[First Name] = RowFirstName
            && 'Table'[Last Name] = RowLastName
            && 'Table'[Year] = RowYear
        )
    )    
)
VAR Result = 
SWITCH ( 
    TRUE(),
    NoOfSubmissions > 1 && 'Table'[Assignments] = "Amended Submission", "Y",
    NoOfSubmissions = 1, "Y",
    "N"
)
RETURN Result

     

    Note: this expression won't work if you have 2 or more people with the same name in the same year.

     

    Best regards,

    Martyn

    • Nathaniel_C's avatar
      Nathaniel_C
      Community Champion
      6 years ago

      Hi nursyeha001 , MartynRamsden ,
      This also will not work if there are more than a max of two entries per year per person. For instance if you had two "Amended Submissions". So, as MartynRamsden  points out if two people have the same name this will not work, my suggestion is that you include in your table a unique identifier (an ID), and that you also have month, day, year to figure out which is the latest submission. Or as an alternative to a full date, you could have the submissions numbered, and we would take the maximum submission per unique ID.


      Let me know if you have any questions.

      If this solves your issues, please mark it as the solution, so that others can find it easily. Kudos 👍are nice too.
      Nathaniel