Calendar table can't contain date outside its range

[MCarmassi]

Hello you all. 

I am making a calendar table with the calendar function just like

DateTable=CALENDAR(DATE(2023,01,01),DATE(2023,12,31))

Then I want to associate to every date in this table the starting date of the week (with weeks starting on Monday) so I add a calculated column with the following DAX code

WeekStart = DATEADD(TabellaDate[Date], 1-WEEKDAY(TabellaDate[Date], 2), Day)

The problem is, this outputs BLANK() for the first rows. Actually, I am pretty certain that I can't in any way write in this table any date that is outside the initial 01/01/2023 - 31/12/2023 range.

Is this the correct behaviour? And if it is, what is the advantage and how can I do what I want to do?

[Ahmedx]

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[Ahmedx · Accepted solution]

pls try this

WeekStart = [Date]-WEEKDAY([Date],2)+1

EndStart = [Date]-WEEKDAY([Date],2)+7

[MCarmassi]

It does work. So the culprit is the DATEADD function. In fact, I see it is specified in the documentation that

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• The result table includes only dates that exist in the dates column.

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Thank you very much.