Calculate running total v/s number of days since launch for separate items?

[Anonymous]

Hello community,

I have two tables that are connected through product ID. Table 1 consists of product details including date of product launch. Table 2 consists of sale details including date of sale and number of sales on each date.

Table 2 is continuously updated on a daily basis while Table 1 is maintained manually with ad-hoc updations.

The result I would like to prepare is a graph which has the number of days since launch on the x-axis and the running total of sales on the Y axis. reference image below:

Joining the tables and getting the running total was something i was able to perform. however, how do i create a separate field for # of days since launch? as a calculated measure it is not possible to have it on the x-axis. Even in the pivot table, I cannot drag it as a category field. So how does one solve for this?

Google Drive link to sample data 

[v-chuncz-msft · Accepted solution]

@Anonymous 

You may refer to the following post.

https://community.powerbi.com/t5/Desktop/Aggregates-of-counts-over-time/td-p/281500

[Greg_Deckler]

So create a column in Table2 "Days since Launch". Use LOOKUPVALUE to lookup the launch date, then the column is:

Days since Launch Column =

  VAR __LaunchDate = LOOKUPVALUE('Table1,...)

RETURN

  ([Date] - __LaunchDate) * 1.

[Anonymous]

Thanks for the input Greg. I tried that idea but it would work if there was only product. In this case there are multiple products to compare. How does one compare # of days since launch for multiple products?