Datetrunc (week) in power BI

[asdf1608]

How do I convert this tableau function to Power BI Dax. datetrunc()

[Greg_Deckler]

@asdf1608 If my understanding of DATETRUNC is correct, that would be:

Column =
  VAR __Date = [Date]
  VAR __Date1 = [Date1]
  VAR __DateTrunc = DATE(YEAR(__Date), MONTH(__Date), 1)
  VAR __DateTrunc1 = DATE(YEAR(__Date1), MONTH(__Dat1), 1)
  VAR __Result = IF(__DateTrunc < __DateTrunc1, 0, [column1])
RETURN
  __Result