Generateseries with Dates

Yes, that's correct.

Rolling prev 3 Quarters and current QTD = 
var q = QUARTER(EDATE(TODAY(),-9))
var y = YEAR(EDATE(TODAY(),-9))
return GENERATESERIES(DATE(y,q*3-2,1),TODAY())

Hi, I think we are super close, now an error is thrown, I added your column and also broke it down to see variable values, see error below.

"a table of multiple values was supplied where a single value was expected"

Please be more precise in your requirement.

Column Flag For Rolling prev 3 Quarters and current QTD = 
var q = QUARTER(EDATE(TODAY(),-9))
var y = YEAR(EDATE(TODAY(),-9))
return if((Date_Dim[CAL_DATE_YR_MTH_DAY_E]) >= DATE(y,q*3-2,1),1,0)

Hi, sadly this doesn't work either, it shows the correct start date of 2023-04-01 but the end date is way into the future - in fact all the was to the end of our date dim, where it should stop at todays date, 2024-01-12.  

. 

Column Flag For Rolling prev 3 Quarters and current QTD = 
var q = QUARTER(EDATE(TODAY(),-9)) 
var y = YEAR(EDATE(TODAY(),-9)) 
return if([CAL_DATE_YR_MTH_DAY_E]) >= DATE(y,q*3-2,1) && [CAL_DATE_YR_MTH_DAY_E]<= TODAY(),1,0)

hmm, something is missing, throwing errors.

Column Flag For Rolling prev 3 Quarters and current QTD = 
var q = QUARTER(EDATE(TODAY(),-9)) 
var y = YEAR(EDATE(TODAY(),-9)) 
return if([CAL_DATE_YR_MTH_DAY_E] >= DATE(y,q*3-2,1) && [CAL_DATE_YR_MTH_DAY_E]<= TODAY(),1,0)