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Anonymous
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5 years ago
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ALL function strage behaviour

Hi All, I am facing strange behaviour of ALL function Let me explain, model is simple in this case and i am having fact table (tableA) and dimension table (TableB). You can also download PBIX here ...
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  • selimovd's avatar
    selimovd
    5 years ago

    Hey Anonymous ,

     

    the reason is that you are using a slicer for the same table as you do a COUNTROWS.

    In that case the Auto-Exist feature kicks in, what is a technique to optimize unnecessary calculations in DAX. You can easily solve that by using a star schema, filtering only on dimensional tables and using the IDs from the fact table only to create the relationships.

     

    There is also an article about the details of Auto-Exist:

    Understanding DAX Auto-Exist - SQLBI

     

    If you need any help please let me know.
    If I answered your question I would be happy if you could mark my post as a solution ✔️ and give it a thumbs up 👍
     
    Best regards
    Denis
     
selimovd's avatar
selimovd
Most Valuable Professional
5 years ago

Hey Anonymous ,

 

the reason is that you are using a slicer for the same table as you do a COUNTROWS.

In that case the Auto-Exist feature kicks in, what is a technique to optimize unnecessary calculations in DAX. You can easily solve that by using a star schema, filtering only on dimensional tables and using the IDs from the fact table only to create the relationships.

 

There is also an article about the details of Auto-Exist:

Understanding DAX Auto-Exist - SQLBI

 

If you need any help please let me know.
If I answered your question I would be happy if you could mark my post as a solution ✔️ and give it a thumbs up 👍
 
Best regards
Denis