I was trying to use the KPI visual of a moving average measure, over a series of dates ( non-unique, so there are many duplicate dates). I was having a bizarre problem with the dates that came from Salesforce Objects as they are date/time/timezone format, however, their type could not be changed simply to date. I would get an error mentioning that I cannot aggregate data using a limit funtion. So I just duplicated the column in the query with a custom column and then changed the type and things worked. However, if I used .[Date], hierarchy type, it would say my moving average measure was (Blank) in the KPI visual. I checked the dates using a table tile and it was showing dates in the future, yet when I look at the data directly there were no future dates. This is historical data so there should be no future dates. Yet after hours of fumbling around, I discovered that removing the .[Date] from the end of my dates column, the problem was corrected. I thought .[Date] only collected the date (for example if it was a DateTime, then only output the date). However it appears to rather have a different purpose, more functionality than returning the date, or it has a bug. My problem is solved, but just wanted to bring this up in case it causes problems for someone else as well. If someone wiser than I know what is happening, by all means, let me know.
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