Distinct count across multiple columns but looking for the latest date for the record

[Anthony_A]

Hey Community, 

I have a data set that contains a list of stores and all of the health permits associated with it. The data also contains an issue start date and end date. 

I want to count the a distinct number of stores per certificate with latest start date. 

Example: 

Store Code: ABC123  Certificate Type: ServSafe Certificate Issue Start Date: 2/23/2024 Issue End Date: 2/23/2026

Store Code: ABC123  Certificate Type: ServSafe Helper Certificate Issue Start Date: 2/23/2024 Issue End Date: 2/23/2026

Store Code: ABC123  Certificate Type: ServSafe Certificate Issue Start Date: 2/23/2021 Issue End Date: 2/23/2024

Count should be 1 for ServSafe Certificate and 1 for ServSafe Helper Certificate.

Any guidance will be appreciated.

[qqqqqwwwweeerrr]

Hi @Anthony_A 

i guess this measure should work for you.

get_count =

VAR MaxDate_ = CALCULATE(MAX(Sheet3[Start Date]),ALLEXCEPT(Sheet3,Sheet3[Certificate Type]))

RETURN CALCULATE(DISTINCTCOUNT(Sheet3[Store ID]),Sheet3[Start Date]=MaxDate_)

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[lbendlin]

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