Measure to sum a column bases on another tables column

[paulomartins]

Hello guys, it's my first post here and I'm very glad to be part of this forum.

Recently I'm trying to deal with a logical sum in DAX and to be honest I not dealing with it really well...

My problem is:

I have 3 tables:

I want to sum the MB52[Quantity] based on Current and Old Keys, reaching this result:

Identifying [Current Key] and suming the quantity of the [Old. Key] with owns [Current Key] quantity.

I tried this code but with no sucess 😞

[Sum. Quantity] =
IF
(

'KEYS'[Old. Key] <> "";

CALCULATE(SUM(MB52[Quantity]) ; MAX(MB52[Key]) = MAX('KEYS'[Old. Key])) + CALCULATE(SUM(MB52[Quantity]) ; MAX(MB52[Key]) = MAX('KEYS'[Current Key]));

SUM(MB52[Quantity])

)

I apreciate a lot your help and thanks anyway 🙂

[v-yangliu-msft · Accepted solution]

Hi  @paulomartins ,

Here are the steps you can follow：

1. Create measure.

Measure =
var _old=
CALCULATE(SUM('MB52'[Quantity]),
FILTER(ALL(MB52),
'MB52'[Key]=MAX('Keys'[Old.Key])))
var _current=
CALCULATE(SUM('MB52'[Quantity]),
FILTER(ALL(MB52),
'MB52'[Key]=MAX('Keys'[Current Key])))
var _sum=
_old + _current
return
IF(
_sum = BLANK() ,0,_sum)

Measure 2 =
SUMX(
    FILTER(ALL('Keys'),
    'Keys'[Current Key] = MAX('Products'[Currrent Key])),
    [Measure])

2. Result:

If you need pbix, please click here.

Best Regards,

Liu Yang

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

[paulomartins]

It is what I was trying to do!

Thank you so much @v-yangliu-msft, you helped me to reach the result and learn a lot about DAX with this problem!

[paulomartins]

Sorry, I forgot to post the tables relationship...

Because I'm using power pivot I had to do some changes, using INTERSECT instead TREATAS and use DISTINCT on MB52[Key].

The final result is just a sum of Current Keys quantity and putting the Old Keys quantity in a null key 😞

Sum of quantity = CALCULATE(

                 SUM ( MB52[Quantity] ); 
                 INTERSECT(

                          UNION( VALUES ( KEYS[Current Key] ); VALUES( KEYS[Old. Key] ) );
                          DISTINCT(MB52[Key])

                )

           )

Result:  

[johnt75]

Assuming that you have a one-to-many relationship from Products to Keys and no relationships between MB52 and the other tables, then you could try

Sum of quantity =
CALCULATE (
    SUM ( MB52[Quantity] ),
    TREATAS (
        UNION ( VALUES ( Keys[Current Key] ), VALUES ( Keys[Old Key] ) ),
        MB52[Key]
    )
)