Nested DAX query with filter conditions

[DanVelus]

Hi there,

I am fairly new to DAX, I would really appreciate your assistance, please.

I am trying to filter out the number of customers that belong to both zones. The table looks like this:

Table: Customers
Customer_id     Zone_id

1                         A

2                         A

3                         A

3                         B

4                         A

4                         B

Expected Result:
2 

(2 customers belong to both zones A & B)

Equivalent SQL would look something like this:

SELECT COUNT(DISTINCT(Customer_id) 

FROM customers
WHERE

 Zone_id = A

AND Customer_id IN

           (SELECT Customer_id

            FROM Customers
            WHERE Zone_id = B)

Could you please help me with an equivalent DAX for this? I tried various options with no luck.

Thank you so much in advance.

[v-cgao-msft · Accepted solution]

hi @DanVelus ,

I try to understand the model you are talking about and hope to get the result you want in the end.

Please create two new table as follows firstly:

Then, create a measure:

Result should look like this:

You can also create a new measure as follows:

Result should look like this:

Hope it helps!

Best regards,

Community Support Team  CGao

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

[smpa01]

@DanVelus  Can you please provide some sample data where it returns BLANK, so that I can debug if required

[wdx223_Daniel]

New Measure=COUNTROWS(FILTER(VALUES('Table'[Customer_id]),CALCULATE(COUNTROWS(FILTER({"A","B"},[Value] IN VALUES('Table'[Zone_id]))))=2))

[smpa01]

@DanVelus  equivalent DAX Measure is this

Measure =
VAR _a =
    CALCULATE (
        MAX ( 'Table'[Customer_id] ),
        FILTER ( VALUES ( 'Table'[Zone_id] ), 'Table'[Zone_id] = "A" )
    )
RETURN
    CALCULATE (
        MAX ( 'Table'[Customer_id] ),
        FILTER ( 'Table', 'Table'[Customer_id] = _a && 'Table'[Zone_id] = "B" )
    )

a more dynamic approach would be following

Measure2 =
VAR _select = { "A", "B" }
VAR _count1 =
    COUNTX ( _select, [Value] )
VAR _count2 =
    CALCULATE (
        COUNT ( 'Table'[Customer_id] ),
        'Table'[Zone_id] IN _select,
        ALLEXCEPT ( 'Table', 'Table'[Customer_id] )
    )
RETURN
    IF ( _count1 = _count2, MAX ( 'Table'[Customer_id] ) )

[DanVelus]

Hey, @smpa01 Thank you so much for both of your responses. I tried all your solutions, I only getting BLANK. I am not getting the expected answer. Here are the some of things I tried:

Table name is 'groups'; Columns: user_id & zone_id
Users_inBothGroup =
VAR _select = {123, 456}
VAR _count1 =
COUNTX (_select, [Value])
VAR _count2 =
CALCULATE(
COUNT(groups[user_id]),
groups[zone_id] IN _select,
ALLEXCEPT(groups, groups[user_id])

)
RETURN
IF( _count1 = _count2, MAX(groups[user_id]) )

The Result: BLANK

VAR _a =
CALCULATE(
MAX(groups[user_id]),
FILTER(VALUES(groups[zone_id]), groups[zone_id] = 123)
)
RETURN
CALCULATE(
MAX(groups[user_id]),
FILTER(groups, groups[user_id] = _a && groups[zone_id] = 456)
)

Result: BLANK

I am not sure what I am doing wrong.

Please help