cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
Highlighted
Matt_P Helper I
Helper I

Grouping / Aggregation

I have the data below and was wondering how to calculate the diff column which is previous qty minus current row quantitiy while ensuring ID is the same.  Many thanks!

 

IDRecordDateAccumilated QtyDiff
506/01/20194557 
513/01/2019458629
520/01/2019460923
527/01/2019462112
510/02/201946309
517/02/2019464616
524/02/2019465812
503/03/201946580
510/03/201946580
517/03/2019469032
524/03/2019471424
530/03/2019474127

 

5 REPLIES 5
Super User IV
Super User IV

Re: Grouping / Aggregation

See my article on Mean Time Between Failure (MTBF) which uses EARLIER: http://community.powerbi.com/t5/Community-Blog/Mean-Time-Between-Failure-MTBF-and-Power-BI/ba-p/3395...


---------------------------------------

Putting square pegs in round holes since 1972.

I have a NEW book! 
DAX Cookbook from Packt
Over 120 DAX Recipes!
Did I answer your question? Mark my post as a solution!

Proud to be a Datanaut!

Matt_P Helper I
Helper I

Re: Grouping / Aggregation

Thanks, looked at EARLIER but im finding it difficult to apply... hence the post. 😁

Microsoft
Microsoft

Re: Grouping / Aggregation

@Matt_P 

Hi,

I suggest you to create an Index column, this can make it very simple with the following formula:

diff previous.JPG

 

Result =
VAR current_ = [Index]
RETURN
    IF (
        Sheet1[Index] <> 1,
        [Accumilated Qty]
            - CALCULATE (
                MAX ( [Accumilated Qty] ),
                FILTER ( Sheet1, Sheet1[Index] = current_ - 1 ),
                FILTER ( Sheet1, Sheet1[Index] <> 0 )
            ),
        BLANK ()
    )

 

Best,
Paul

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Matt_P Helper I
Helper I

Re: Grouping / Aggregation

@V-pazhen-msft this looks like exactly what I'm looking for.  Ill try it out when i get the chance and report back/accept as soution.  Many Thanks!

 

edit.  Actually, this wouldnt work if I had an id of 4 in the same dataset as the id of 5 would it?

Microsoft
Microsoft

Re: Grouping / Aggregation

@Matt_P 

This formula is created by looking at the the index column, so it does not matter if your ID is 4 or 5. 
Just leave a message for any updates if needed.

 

Best, 

Helpful resources

Announcements
Announcing the New Spanish Forum

Announcing the New Spanish Forum

Do you need help in Spanish? Check out our new Spanish community section.

MBAS Gallery 2020

MBAS Gallery 2020

Watch Microsoft Business Applications Summit sessions on-demand.

‘Better Together’ Integration Forum Launch

‘Better Together’ Integration Forum Launch

We've launched a how-to forum where you can learn about how Power BI integrates with other Power Platform products.

Top Solution Authors
Top Kudoed Authors