Creating a measure to return the date after a given date

[Rothbardian]

How do I create a measure or created column identifying the first date occurring in a table after a given critical date?

Scenario

Our team assumed responsibility for a large, active body of content and needs to identify when a given article came into scope for us (was published after the date we assumed responsibility). The table is pulled daily from an Azure DevOps (ADO) analytics view, so all dates of interest exist in the table.

Issue

I need to calculate this from the given table:

WorkItem	ID	Created	Published	Changed	InScope	Date	Current
118751	4563447	5/19/2020	1/12/2021	1/12/2021	Jul-20	1/12/2021	TRUE
118912	4563939	5/22/2020	12/10/2020	1/5/2021	Aug-20	12/10/2020	FALSE
118912	4563939	5/22/2020	12/29/2020	1/5/2021	Aug-20	12/29/2020	FALSE
118912	4563939	5/22/2020	1/5/2021	1/5/2021	Aug-20	1/12/2021	TRUE
119068	4564386	5/27/2020	1/12/2021	1/12/2021	Not in scope	1/12/2021	TRUE
119579	4566055	6/5/2020	1/8/2021	1/11/2021	Jan-21	1/12/2021	TRUE
120394	4570070	6/26/2020	6/26/2020	1/11/2021	Not in scope	1/12/2021	TRUE
120540	4570485	6/30/2020	12/24/2020	12/27/2020	Not in scope	1/12/2021	TRUE
120920	4572928	7/9/2020	7/10/2020	1/11/2021	Jul-20	1/12/2021	TRUE

I have tried to extrapolate fromDAX Formula to Return First Date Based on Other column , but am not able to successfully incorporate the conditional clause. The furthest I've gotten on that front is to replicate the "Created" column, which doesn't meet my need.

I think I am on the right track with this conditional column formula:

InScope =
VAR DateFilter = FILTER(PubTable,PubTable[Published]>DATEVALUE(7/1/2020))
VAR FirstPub = CALCULATE(
    FIRSTDATE(PubTable[Published]),
    DateFilter,
    ALLEXCEPT('PubTable','PubTable'[Published]
    )
RETURN FirstPub

Thanks in advance for any insight you can provide!

[Rothbardian · Accepted solution]

UPDATE: I was able to derive the information I needed through a combination of filters on the Published field and Earliest calculation on the visual values. 

• Visual filter: Published is on or after 7/1/2020
• Visual Values field: Earliest(Count (Distinct) of WorkItemID)

This resulted in a matrix counting first publication of articles after the critical date. 

I manually confirmed that each article listed was unique and that the listed publication date was the first after the critical date.

[Ashish_Mathur]

Hi,

Please share the logic behind generating the dates in the InScope column.

[Rothbardian]

Hi Ashish,

The logic is very straightforward:

• The InScope date is the first (earliest) date of publication (from Published column) on or after July 1, 2020. The table is refreshed daily from an ADO analytics view.