Solved

How to filter using DAX in PowerPivot 2013

Posted on 2013-11-04
4
614 Views
Last Modified: 2013-11-05
I'm working with PowerPivot in Excel 2013. Data is loaded from SQL Server 2012.

I have a data table named Results (ResultID int, OrderOpenTime datetime, AccountBalance decimal, AccountEquity decimal, DateKey date) and a lookup table DimDates with various time dimensions. The Results table is updated about every 5 minutes with the latest account and equity number which is good for trend pivots, but I have a problem with grouping to show results.

I've added measures to the Results table called FirstRowDateTime and LastRowDateTime that correctly gives me the first and last row for the selected time period, but I'm unable to use them for filtering.

By my limited understanding
:=CALCULATE(SUM([AccountBalance]);FILTER(Results; Results[OrderOpenTime]=[FirstRowDateTime]))
should calculate the sum of only one row (the first one in the chosen time period of the pivot table), but instead I get the sum of all [AccountBalance] as if the FILTER statement wasn't even there.

What am I missing? I've included a spreadsheet with sample data.

TIA!
Dennis
DAX-problem.xlsx
0
Comment
Question by:Dennis_Gundersen
  • 2
  • 2
4 Comments
 
LVL 85

Accepted Solution

by:
Rory Archibald earned 500 total points
Comment Utility
I think all you need is:

=SUMX(TOPN(1,Results, Results[OrderOpenTime],1),[AccountBalance])
0
 

Author Comment

by:Dennis_Gundersen
Comment Utility
Thank you, that's very close. When I replace Results[OrderOpenTime] with my measure for the same thing I get the formula
=SUMX(TOPN(1;Results;[FirstRowDateTime];1);[AccountBalance])
which does give me the incoming balance, but I'm not quite sure the formula works the right way since when I replace "first row" with "last row" as in
=SUMX(TOPN(1;Results;[LastRowDateTime];1);[AccountBalance])
I get the same result.

The first row should return $2000.00, but the second formula should return $2018.40.

By changing the ordering direction to 0 for the second formula, I fortunately get the value I need, so I can finally move on using this solution, but it still looks to me like the First/LastRowDateTime measure is more or less ignored as a filter, which I fail to understand.

Re
D

Update: Never mind, I get it now. SUMX is an iterator so it looks through all the rows. I probably shouldn't use an iterator on a data table, but I'll take it. Thanks!
0
 
LVL 85

Expert Comment

by:Rory Archibald
Comment Utility
You don't need your First/Last measures at all. For the FirstBalance, you use:

=SUMX(TOPN(1;Results;Results[OrderOpenTime];1);[AccountBalance])
and for the last balance you use:
=SUMX(TOPN(1;Results;Results[OrderOpenTime];0);[AccountBalance])
0
 

Author Comment

by:Dennis_Gundersen
Comment Utility
Yes, I just posted an update to my reply. Took me awhile to remember the difference between SUM and SUMX. Thank you very much, I've been stuck on this problem for 2 weeks.

Re
Dennis
0

Featured Post

What Is Threat Intelligence?

Threat intelligence is often discussed, but rarely understood. Starting with a precise definition, along with clear business goals, is essential.

Join & Write a Comment

Introduction SQL Server Integration Services can read XML files, that’s known by every BI developer.  (If you didn’t, don’t worry, I’m aiming this article at newcomers as well.) But how far can you go?  When does the XML Source component become …
This code takes an Excel list of URL’s and adds a header titled “URL List”. It then searches through all URL’s in column “A”, looking for duplicates. When a duplicate is found, it is moved to the top of the list. The duplicate URL’s are then highlig…
Viewers will learn how the fundamental information of how to create a table.
This Micro Tutorial will demonstrate how to create pivot charts out of a data set. I also added a drop-down menu which allows to choose from different categories in the data set and the chart will automatically update.

743 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now