Hello. In powerpivot why do they recommend to create formulas rather than just use built in pivot table futures (for example vs. prior period) Below is a formula for current month but it seems sort of a waste. I don't get it. Thoughts?
:=CALCULATE([Sum Amount], FILTER(ALL(Calendar), Calendar[Year #] = MAX(Calendar[Year #])), FILTER(ALL(Calendar),Calendar[Month #] = MAX(Calendar[Month #])))
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