Newbie, I want to get the measure of all distinct count in Table B

[FreedJustine]

Hi, Im a newbie in Power Bi, I have two tables below and want to calculate the distinct count in Table B, however it seems like it only calculate the distict count that has matches in Table A.
 

My Result is = 4 instead of 5
 
I have a big data and merging a table will slow down the process. Please help! Thank you in Advance.
 
 

[Anonymous]

This should work properly - do you have any filters applied from table A? If so, that will affect the outcome.

[FreedJustine]

Hi, Yes I do have filters, i filter them by date.

[v-cherch-msft · Accepted solution]

Hi @FreedJustine 

It seems you may try ALL function to create a measure to clear the filters as below.If it is not your case,please follow the How to Get Your Question Answered Quickly to post your simple assumed data and expected output.

Reference:https://www.sqlbi.com/articles/managing-all-functions-in-dax-all-allselected-allnoblankrow-allexcept...

Regards,