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Benjamin_Eureka's avatar
Benjamin_Eureka
Frequent Visitor
6 years ago
Solved

Database design for comparing rows

Hello friends, I face a challenge and I don't know how to address it. I have a big flat table with the test results. It contains data on all completed exams (different types) and candidates who t...
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  • v-deddai1-msft's avatar
    v-deddai1-msft
    6 years ago

    Hi Benjamin_Eureka,

     

    Is the output in your data your expected output? But as parry2k said, the data you provided lack candidate column. Would you please check for it?

     

    If you want to filter out candidate that pass both Exam A and Exam B, please refer to the measure below:

     

     

    Measure =

VAR A =

    CALCULATE (

        MAX ( 'Table'[result] ),

        ALLEXCEPT ( 'Table', 'Table'[candidate] ),

        'Table'[exam] = "ExamA"

    )

VAR B =

    CALCULATE (

        MAX ( 'Table'[result] ),

        ALLEXCEPT ( 'Table', 'Table'[candidate] ),

        'Table'[exam] = "ExamB"

    )

RETURN

    IF ( A = "Yes" && B = "Yes", 1, 0 )

     

     

     

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

     

    Best Regards,

    Dedmon Dai

parry2k's avatar
parry2k
Super User
6 years ago

Benjamin_Eureka Thanks but no idea how you get to those numbers? Could you explain the logic?

Benjamin_Eureka's avatar
Benjamin_Eureka
Frequent Visitor
6 years ago

ah, I'm so sorry. I filled the output table with dummy numbers. The idea is that I can see, of the people who completed 'Exam B', if they also finished 'Exam A' (dummy names). 

 

For instance:

There are 30 people who completed 'Exam B'. 20 of them also completed 'Exam A'. I want to check if those 20 received higher grades than the other 10. 

 

Does this makes sense? I'm sorry for the lack of clarity.

  • parry2k's avatar
    parry2k
    Super User
    6 years ago

    Benjamin_Eureka I wish you had made excel file much easy to digest, we are talking Exam a and b, and in excel sheet you have all various text (i cannot relate) and the numbers in excel don't match with anything. would you mind putting the file again and explain, help me to get the help.