topic Re: DatesAdd Function with Custom Date - Help Needed in Desktop

DatesAdd Function with Custom Date - Help Needed

SimonSeez — Fri, 08 Jan 2021 12:45:17 GMT

Hello,

I am using this custom date table and I need to perform some MTD, QTD and YTD calculations. I am using DatesADD function and it just does not seem to work. The result always gives the sum of the whole previous year

https://radacad.com/all-in-one-script-to-create-date-dimension-in-power-bi-using-power-query

Does anyone have any idea how I can perform these activities with a custom date calender?

Best Regards,

Simon

Re: DatesAdd Function with Custom Date - Help Needed

themistoklis — Fri, 08 Jan 2021 12:51:10 GMT

SimonSeez

Using DAX you can use the following formulas for YTD and YTD LY

YTD = CALCULATE(SUM(Table6[Amount]),DATESYTD('Calendar'[Date]))

YTD LY = CALCULATE(Table6[YTD],SAMEPERIODLASTYEAR('Calendar'[Date]))

Useful links that you could look at are the following:

https://simplesqlbi.home.blog/2019/08/18/dax-formulas-to-calculate-mtd-qtd-ytd-values-and-comparing-them-against-same-period-last-year-mtd-qtd-ytd-values-in-power-bi/

https://docs.microsoft.com/en-us/dax/time-intelligence-functions-dax

Re: DatesAdd Function with Custom Date - Help Needed

mahoneypat — Fri, 08 Jan 2021 12:51:35 GMT

Are you using an approach like these?

Calculating MTD, QTD, YTD, Running and Cumulative Total in Power BI (mssqltips.com)

Basics of Time Intelligence in DAX for Power BI; Year to Date, Quarter to Date, Month to Date - RADACAD

Please share your DAX for a specific suggestion.

Regards,

Pat

Re: DatesAdd Function with Custom Date - Help Needed

amitchandak — Fri, 08 Jan 2021 12:54:31 GMT

SimonSeez , Are you using Date table.

Please refer this video where I dicussed Why Time intelligence can fail - https://www.youtube.com/watch?v=OBf0rjpp5Hw

You need make sure 5 things. Please check.

Re: DatesAdd Function with Custom Date - Help Needed

SimonSeez — Fri, 08 Jan 2021 13:22:54 GMT

Hello amitchandak

Yes, I am using a date table. Off to watch your video now

Re: DatesAdd Function with Custom Date - Help Needed

amitchandak — Fri, 08 Jan 2021 13:40:15 GMT

SimonSeez , in case that does not help. Also, the useful information provided by other super users/users does not help. then

Please share a sample pbix after removing sensitive data.

Re: DatesAdd Function with Custom Date - Help Needed

SimonSeez — Fri, 08 Jan 2021 14:22:18 GMT

Hello Pat,

I am using this

Calculate([Total Revenue], DateAdd('Date Table' [Date], -1, Quarter))

Rather than give me total for the last quarter, it gives a total for the whole of the previous year

Re: DatesAdd Function with Custom Date - Help Needed

SimonSeez — Fri, 08 Jan 2021 14:51:02 GMT

Hello amitchandak

Educative video as expected. I subscribed to the channel as well. I have applied everything you said and I noticed you used a DatesYTD before you used the DatesAdd. I hadn't seen this used before so I tried it

This was my previous measure -

Calculate([Total Revenue], DateAdd('Date Table' [Date], -1, Quarter))

I modified it to seem like yours

Calculate([Total Revenue], DatesQTD(DateAdd('Date Table' [Date], -1, Quarter))). Strangely this gave me a blank result

I then remodified to this

Calculate([Total Revenue], DatesQTD(DateAdd('Date Table' [Date], -1, Year))) and strangely it gave me the correct result. I couldn't make sense of my the measure worked so I have some doubts.

Any ideas why?

Re: DatesAdd Function with Custom Date - Help Needed

amitchandak — Fri, 08 Jan 2021 15:28:21 GMT

SimonSeez , Thanks for subscribing.

Calculate([Total Revenue], DatesQTD(DateAdd('Date Table' [Date], -1, Quarter))) means last qtr. That is blank means no data in last qtr but data in last year same qtr.

That sound like strange.

Can you share sample data and sample output in table format? Or a sample pbix after removing sensitive data.

Re: DatesAdd Function with Custom Date - Help Needed

SimonSeez — Fri, 08 Jan 2021 15:36:22 GMT

One quick question before I share data.

I modified the measure to use the date that is in the same table as the revenue but instead of getting the total of last quarter I got the value of October 2020

Calculate([Total Revenue], DatesQTD(DateAdd('DWH Revenue'[Date], -1, Quarter))).

Re: DatesAdd Function with Custom Date - Help Needed

amitchandak — Fri, 08 Jan 2021 15:55:33 GMT

SimonSeez , dateadd need continuous dates . And it return blank when it does not get it.

refer this video, where I have shown that for a column - https://www.youtube.com/watch?v=9qiRivlBv8w

The best way test is

Calculate(Min('DWH Revenue'[Date]), DatesQTD(DateAdd('DWH Revenue'[Date], -1, Quarter)))

Calculate(Max('DWH Revenue'[Date]), DatesQTD(DateAdd('DWH Revenue'[Date], -1, Quarter)))

Now you know what you time intelligence function returns: min and max. It returns a set of dates.