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05-02-2018 17:34 PM - last edited 06-26-2018 10:13 AM
Again, thanks to @Phil_Seamark's insightful guidance and examples in his fantastic new book, Beginning DAX with Power BI: The SQL Pro’s Guide to Better Business Intelligence, I finally "get" the GENERATE function and how it can be used to elegantly solve problems that have vexed me since almost the very first Power BI model that I ever built, dealing with data that contains date ranges. This one uses the same technique as Open Tickets but puts a different spin on it by also requiring that there be a periodic element to the totals calculation.
The following measure assumes a disconnected date table and data that involves billing starting and ending dates with a monthly fee. The measure computes the total revenue within any particular month, which can then be plotted. Also nifty.
Total Amount = VAR tmpCalendar = ADDCOLUMNS('Calendar',"Month",MONTH([Date]),"Year",YEAR([Date]),"MonthYear",VALUE(YEAR([Date]) & FORMAT(MONTH([Date]),"0#"))) VAR tmpBilling = ADDCOLUMNS('Billing',"MonthYearBegin",VALUE(YEAR([BeginDate]) & FORMAT(MONTH([BeginDate]),"0#")), "MonthYearEnd",VALUE(YEAR([UntilDate]) & FORMAT(MONTH([UntilDate]),"0#"))) VAR tmpTable = SELECTCOLUMNS( FILTER( GENERATE( tmpBilling, SUMMARIZE(tmpCalendar,[Year],[Month],[MonthYear]) ), [MonthYear] >= [MonthYearBegin] && [MonthYear] <= [MonthYearEnd] ), "Customer",[Customer], "Year",[Year], "Month",[Month], "Amount",[Amount] ) RETURN SUMX(tmpTable,[Amount])
Again, if you are only going to own one DAX book, IMHO, Phil's is the book you want!
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Hello!
thank for sharing!
I have a question. I have a similar problem, just my payment is once per year for all 12 months. The question is when I open your pbix all works as it should, but when I use FORMAT to get YearMonth I've got a mistake "could not convert text to number" that is the reason why FILTER does not work. Did you do somthening special to fix it?
Thanks!