SUM values by higher aggregation

[manutejedor]

Hi! I have a very simple sample of data with two tables: "his_prod" and "his_prod_op". "His_prod" is linked to "his_prod_op" by a "one to many" relationship on the field "Task". In the table "his_prod" there are different "Projects" that can have several "Tasks", and each "Task" has a "Duration". The table "his_prod_op" defines the "Persons" that have participated in each "Task". 

What I intend to do is to summarize the total "Duration" of the "Projects" in which a specific "Person" has participated, no matter the "Tasks" he's been in, this is:

The problem I am facing is that the moment I filter by "Person", no matter what DAX formula I use (SUM, SUMX, CALCUALTE, etc), all I get is the "Duration" of the "Task" in which that person has participated, this is (in red wrong values):

Is there any formula to calculate this "Duration" by "Job"? Thanks for the help!

Manu

[v-yulgu-msft · Accepted solution]

Hi @manutejedor,

LivioLanzo's suggestion works great. But you can create a simpler one, without adding an extra Person table.

Total duration =
IF (
    COUNTROWS ( his_prod_op ),
    CALCULATE ( SUM ( his_prod[Duration] ), ALLSELECTED ( his_prod_op[Person] ) )
)

Best regards,

Yuliana Gu

[LivioLanzo]

Hello @manutejedor,

you can reshape your model this way where you allocated a task time to each person proportially, should be farily easy within Power query with a couple of joins

then you can add this measure:

=IF( 
    COUNTROWS( his_prod_op ),
    CALCULATE( 
        SUM( his_Prod_op[Durarion Allocation] ), 
      ALL( Persons[Person] )
    )
)

You can download the file here:

https://1drv.ms/x/s!AiiWkkwHZChHj1eypR2cbxq8ho32