How to calculate the row count based on the other table

[liyucao]

I have 2 tables. One is risks. It has RiskId and ServiceId. Another table is RiskId and JobId, the RiskId can occur multiple times in table2. I want to use ServiceId as slicer and display the RiskId and the count of occurence in table 2. 

measure =

var _sum = CALCULATE(

    COUNTROWS(table_2)

)

RETURN

_sum

It can only show the risks that occur in table 2, I want to show all risks with the select service Id no matter if it exists in table2. And if it does not exist in table 2, the number shows 0. How to write the measure?

[_AAndrade]

Hi @liyucao,

I'm assuming that your measure is compute the right numbers when the RiskID exists in table 2. Take this in mind, to shows 0 when RiskID it's not exist in table 2 I only adjust the return to this:

var _sum = CALCULATE(
    COUNTROWS(table_2)
)
RETURN
IF(
  ISBLANK(_sum),
  0,
  _sum
)

[liyucao]

If so, the slicer will not take affect, it will show all risks

[_AAndrade]

If you can provide a simple pbix or pictures of what you have now and the desired output,I could be more helpful.

[liyucao]

for example, I want to show the list of risks and count the linked experiment in a time period and show it. Actually there are 8 risks in the service I select, since 3 of 8 have no experiment so it does not show in the table.

But if I add the if condition here. The slicer does not take affect and the table shows all risks. It is very wierd.

[_AAndrade]

On the return, replace 0 to BLANK() and see what happens.

[liyucao]

how to make the table contains 8 risks (of the service in the slicer) and show 0 if there is no existing experiment

[_AAndrade]

Without analysing your file, I can't help you further. If you can share a sample pbix file with your example I will take a look otherwise it's a waste of time for both of us.

[liyucao]

https://microsoftapc-my.sharepoint.com/:u:/g/personal/liyucao_microsoft_com/EVc0bLO3RQlAvSdTnB6rYoIB... can you view it?

As expected, the table should show all risks in serviceId A, which is 1,3,4. But the 2 method I try does not show correctly.

[_AAndrade · Accepted solution]

Hi @liyucao,

I'm attaching a pbix file with the my solution.
The final result should be this:

[liyucao]

Thanks, it really helps. I am trying to understand the measure.

[liyucao]

It will still show the 5 risks that exists in experiment table.