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Anonymous
Not applicable

Simplifying dax queries that caused a lot of performance issue

Hi All, My PBI reports are working just fine but the problem is, it's having performance issue in my actual pbi, loading takes too much of time. But in my mockup pbi it's working fine. i think this is due to long queries of the dax measures. 

 

Two measure that's needing simplifications

1. 

Status expected measure: =
VAR _latestdate =
    CALCULATE (
        MAX ( Student[Application Date] ),
        ALLEXCEPT ( Student, Student[Student ID] )
    )
VAR _maxstatuskey =
    MAXX (
        FILTER (
            ALL ( Student ),
            Student[Student ID] = MAX ( Student[Student ID] )
                && Student[Application Date] = _latestdate
        ),
        Student[Application Status Key]
    )
RETURN
    IF (
        HASONEVALUE ( Student[Student ID] ),
        CALCULATETABLE (
            VALUES ( 'Status'[Status] ),
            'Status'[Application Status Key] = _maxstatuskey
        )
    )
 
 
2. 
Application date measure: =
VAR _latestdate =
    CALCULATE (
        MAX ( Student[Application Date] ),
        ALLEXCEPT ( Student, Student[Student ID] )
    )
RETURN
IF( HASONEVALUE(Student[Student ID]),
    _latestdate)
 
Mockup result which is correct:

ameng_0-1660066280539.png

pbi file 

I need to apply the same logic from the mockup pbi to my actual pbi and it's having performance issues, and i believe this is due to the long dax queries.Hoping that someone can guide me on this, thank you!

1 ACCEPTED SOLUTION
Jihwan_Kim
Super User
Super User

Hi,

please try the below two measures whether those suit your dataset.

 

Application date measure: = 
VAR _latestdate =
    MAX ( Student[Application Date] )
RETURN
    IF ( HASONEVALUE ( Student[Student ID] ), _latestdate )

 

Status expected measure: = 
VAR _maxdate = [Application date measure:]
VAR _maxstatuskey =
    CALCULATE (
        MAX ( Student[Application Status Key] ),
        Student[Application Date] = _maxdate
    )
RETURN
    IF (
        HASONEVALUE ( Student[Student ID] ),
        CALCULATETABLE (
            VALUES ( 'Status'[Status] ),
            'Status'[Application Status Key] = _maxstatuskey
        )
    )

If this post helps, then please consider accepting it as the solution to help other members find it faster, and give a big thumbs up.


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4 REPLIES 4
Jihwan_Kim
Super User
Super User

Hi,

please try the below two measures whether those suit your dataset.

 

Application date measure: = 
VAR _latestdate =
    MAX ( Student[Application Date] )
RETURN
    IF ( HASONEVALUE ( Student[Student ID] ), _latestdate )

 

Status expected measure: = 
VAR _maxdate = [Application date measure:]
VAR _maxstatuskey =
    CALCULATE (
        MAX ( Student[Application Status Key] ),
        Student[Application Date] = _maxdate
    )
RETURN
    IF (
        HASONEVALUE ( Student[Student ID] ),
        CALCULATETABLE (
            VALUES ( 'Status'[Status] ),
            'Status'[Application Status Key] = _maxstatuskey
        )
    )

If this post helps, then please consider accepting it as the solution to help other members find it faster, and give a big thumbs up.


Go to My LinkedIn Page


Anonymous
Not applicable

Thank you Jihwan for the help!

amitchandak
Super User
Super User

@Anonymous , seem like you need to get the latest status. refer if my code in the blog can help

https://amitchandak.medium.com/power-bi-get-the-last-latest-value-of-a-category-d0cf2fcf92d0

 

Anonymous
Not applicable

Thank you for the guide sir

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