Using a Column as a Range in Power Pivot

[allenshapiro]

Hi, I am linking power pivot to a table of 220 million rows. I want to find the first time an ID appears in the data set. 

In doing so I would like to create a new measure by using the following formula:

=N(countifs(Adrian_data[DeviceID],Adrian_data[DeviceID])=1)). The problem I am having is how do you tell Dax that the Device Id that I want is in the entire column. Essentially I want to use the column as a range.

How do you identify a complete column as a range?

[v-yulgu-msft]

Hi @allenshapiro ,

Please illustrate your requirement with sample data and desired output.

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Best regards,

Yuliana Gu