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Grow your Fabric skills and prepare for the DP-600 certification exam by completing the latest Microsoft Fabric challenge.

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AlexisOlson
Super User
Super User

No CACULATE challenge

For those haters of CALCULATE like @Greg_Deckler, I challenge you to create a measure without CALCULATE that performs anywhere close to the same speed as this very simple measure that switches to an inactive relationship. It must also not break if a simple filter from any of the dimension tables is applied.

 

AlexisOlson_0-1679503045350.png

 

Sales Amount (Delivered) = 
CALCULATE (
    SUM ( Sales[SalesAmount] ),
    USERELATIONSHIP ( Sales[DeliveredDateKey], 'Calendar'[DateKey] )
)

 

 

Please use the attached file.

Report preview:

AlexisOlson_1-1679503139856.png

As expected, we can see that sales during periods without a discount promotion have products delivered in promotion months.

2 ACCEPTED SOLUTIONS
tamerj1
Super User
Super User

Hi @AlexisOlson  & @Greg_Deckler 
This one uses neither CALCULATE nor CALCULATETABLE and performs faster than the original one

1.png

Sales Amount (Delivered) 2 = 
VAR SelectedSales = ALLSELECTED ( Sales )
VAR SummarySales = 
    SUMMARIZE ( 
        SelectedSales, 
        Sales[DeliveredDateKey],
        "@SalesAnount", SUM ( Sales[SalesAmount] ) 
    )
RETURN
    SUMX ( 
        VALUES ( 'Calendar'[DateKey] ),
        VAR FilteredSales = FILTER ( SummarySales, [DeliveredDateKey] = 'Calendar'[DateKey] ) 
        RETURN
            SUMX ( FilteredSales, [@SalesAnount] )
    )

 

View solution in original post

AntrikshSharma
Community Champion
Community Champion

@AlexisOlson Good challenge! I am a Pro CALCULATE but recommend users not to stick with a single side. 
Here are my solutions:

Solution 1 using INNERJOIN, performs in 40ms without any filter

 

Delivered Amount AS = 
VAR Dates = 
    SELECTCOLUMNS ( 
        VALUES ( 'Calendar'[DateKey] ),
        "DeliveredDateKey", 'Calendar'[DateKey] & ""
    )
VAR SalesByDelivery = 
    SELECTCOLUMNS ( 
        SUMMARIZE ( 
            ALLSELECTED ( Sales ),
            Sales[DeliveredDateKey],
            "Sum", SUM ( Sales[SalesAmount] )
        ),
        "DeliveredDateKey", [DeliveredDateKey] & "",
        "Sales", [Sum]
    )
VAR Result = 
    SUMX ( 
        NATURALINNERJOIN ( Dates, SalesByDelivery ),
        [Sales]
    )
RETURN 
    Result

 

Solution 2 using CONTAINSROW or the IN performs in 23 ms

 

Delivered Amount AS 2 = 
VAR SalesByDeliveryDate = 
    SUMMARIZE ( 
        ALL ( Sales ),
        Sales[DeliveredDateKey],
        "TotalSales", SUM ( Sales[SalesAmount] )
    )
VAR CurrentYearRows = 
    FILTER ( 
        SalesByDeliveryDate,
        CONTAINSROW (
            VALUES ( 'Calendar'[DateKey] ),
            Sales[DeliveredDateKey]
        )
    )
VAR Result = 
    SUMX ( CurrentYearRows, [TotalSales] )
RETURN 
    Result

 

Cumulative Total - I added a YearMonth column in the Dates table, since we are not showing date level I decided to reduce granularity, takes about 50ms.

 

CT DeliveredAmount AS = 
VAR SalesByDelivery = 
    SUMMARIZE ( 
        ALL ( Sales ),
        Sales[DeliveredDateKey],
        "@TotalSales", SUM ( Sales[SalesAmount] ),
        "@YearMonth", YEAR ( Sales[DeliveredDateKey] ) * 100 + MONTH ( Sales[DeliveredDateKey] ) 
    )
VAR Result = 
    SUMX ( 
        FILTER ( 
            SalesByDelivery, 
            [@YearMonth] <= MAX ( 'Calendar'[YearMonth] ) 
        ),
        [@TotalSales]
    )
RETURN 
    Result

 

AntrikshSharma_0-1679580762224.png

@tamerj1 I tried and your code and it returns incorrect subtotals.

AntrikshSharma_1-1679581031494.png

View solution in original post

26 REPLIES 26
AlexisOlson
Super User
Super User

I'm awarding the win to @tamerj1 for the original problem. It's about 20ms in testing on my machine instead of 10ms for mine but that's still super fast.

 

I'm awarding the win to @AntrikshSharma for the cumulative challenge since that solution works for subtotals as well.

AntrikshSharma
Community Champion
Community Champion

@AlexisOlson Good challenge! I am a Pro CALCULATE but recommend users not to stick with a single side. 
Here are my solutions:

Solution 1 using INNERJOIN, performs in 40ms without any filter

 

Delivered Amount AS = 
VAR Dates = 
    SELECTCOLUMNS ( 
        VALUES ( 'Calendar'[DateKey] ),
        "DeliveredDateKey", 'Calendar'[DateKey] & ""
    )
VAR SalesByDelivery = 
    SELECTCOLUMNS ( 
        SUMMARIZE ( 
            ALLSELECTED ( Sales ),
            Sales[DeliveredDateKey],
            "Sum", SUM ( Sales[SalesAmount] )
        ),
        "DeliveredDateKey", [DeliveredDateKey] & "",
        "Sales", [Sum]
    )
VAR Result = 
    SUMX ( 
        NATURALINNERJOIN ( Dates, SalesByDelivery ),
        [Sales]
    )
RETURN 
    Result

 

Solution 2 using CONTAINSROW or the IN performs in 23 ms

 

Delivered Amount AS 2 = 
VAR SalesByDeliveryDate = 
    SUMMARIZE ( 
        ALL ( Sales ),
        Sales[DeliveredDateKey],
        "TotalSales", SUM ( Sales[SalesAmount] )
    )
VAR CurrentYearRows = 
    FILTER ( 
        SalesByDeliveryDate,
        CONTAINSROW (
            VALUES ( 'Calendar'[DateKey] ),
            Sales[DeliveredDateKey]
        )
    )
VAR Result = 
    SUMX ( CurrentYearRows, [TotalSales] )
RETURN 
    Result

 

Cumulative Total - I added a YearMonth column in the Dates table, since we are not showing date level I decided to reduce granularity, takes about 50ms.

 

CT DeliveredAmount AS = 
VAR SalesByDelivery = 
    SUMMARIZE ( 
        ALL ( Sales ),
        Sales[DeliveredDateKey],
        "@TotalSales", SUM ( Sales[SalesAmount] ),
        "@YearMonth", YEAR ( Sales[DeliveredDateKey] ) * 100 + MONTH ( Sales[DeliveredDateKey] ) 
    )
VAR Result = 
    SUMX ( 
        FILTER ( 
            SalesByDelivery, 
            [@YearMonth] <= MAX ( 'Calendar'[YearMonth] ) 
        ),
        [@TotalSales]
    )
RETURN 
    Result

 

AntrikshSharma_0-1679580762224.png

@tamerj1 I tried and your code and it returns incorrect subtotals.

AntrikshSharma_1-1679581031494.png

@AntrikshSharma 
Yes you are right I've over looked that but this is an easy fix. The outer SUMX should have been a MAXX

Cumulative Sales Amount (Delivered) 2 = 
VAR SelectedSales = ALLSELECTED ( Sales )
VAR SummarySales = 
    SUMMARIZE ( 
        SelectedSales, 
        Sales[DeliveredDateKey],
        "@SalesAnount", SUM ( Sales[SalesAmount] ) 
    )
VAR SummaryDates =
    SUMMARIZE ( 
        'Calendar',
        'Calendar'[Year],
        'Calendar'[MonthName],
        "@MaxDate", MAX ( 'Calendar'[DateKey] )
    )
RETURN
    MAXX ( 
        SummaryDates,
        VAR FilteredSales = FILTER ( SummarySales, [DeliveredDateKey] <= [@MaxDate] ) 
        RETURN
            SUMX ( FilteredSales, [@SalesAnount] )
    )

@tamerj1 Slick, way better than my revision in my video I made last night.


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DAX is easy, CALCULATE makes DAX hard...

@Greg_Deckler 

Wow!

Thank you for mentioning me in your video ☺️

My name is Tamer Juma by the way and we are connected in LinkedIn actually you replied to my comments there couple of times. 

Note: I fixed the wrong total by simply replacing the outer SUMX with MAXX

@tamerj1 Yep, I saw that after the video went up. I posted the PBIX out on MicrosoftHatesGreg on github with the revised measure that corrects the subtotals. Absolutely, of course I'm going to mention you! You're one of the stars of the show! And nice to meet you Tamer Juma! Sorry, never put the two together before or my memory is failing me! But, it did let me work in the SwizzleStick420 joke!


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DAX is easy, CALCULATE makes DAX hard...

@AntrikshSharma Really impressive! If there is a restriction that you can't change the data model, then this slight tweak works just as well:

Cumulative Sales Amount (Delivered) AS rev = 
VAR SalesByDelivery = 
    SUMMARIZE ( 
        ALLSELECTED ( Sales ),
        [DeliveredDateKey],
        "@TotalSales", SUM ( [SalesAmount] ),
        "@YearMonth", YEAR ( [DeliveredDateKey] ) * 100 + MONTH ( [DeliveredDateKey] ) 
    )
VAR Result = 
    SUMX ( 
        FILTER ( 
            SalesByDelivery, 
            [@YearMonth] <= MAX ( 'Calendar'[Year] ) * 100 + MAX( 'Calendar'[MonthOfYear])
        ),
        [@TotalSales]
    )
RETURN
    Result

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DAX is easy, CALCULATE makes DAX hard...
tamerj1
Super User
Super User

Hi @AlexisOlson  & @Greg_Deckler 
This one uses neither CALCULATE nor CALCULATETABLE and performs faster than the original one

1.png

Sales Amount (Delivered) 2 = 
VAR SelectedSales = ALLSELECTED ( Sales )
VAR SummarySales = 
    SUMMARIZE ( 
        SelectedSales, 
        Sales[DeliveredDateKey],
        "@SalesAnount", SUM ( Sales[SalesAmount] ) 
    )
RETURN
    SUMX ( 
        VALUES ( 'Calendar'[DateKey] ),
        VAR FilteredSales = FILTER ( SummarySales, [DeliveredDateKey] = 'Calendar'[DateKey] ) 
        RETURN
            SUMX ( FilteredSales, [@SalesAnount] )
    )

 

@Greg_Deckler 

What's an easy no DAX to replace A Amount here. Basically, return the Amount of A in context to the visual regardless of category. So you can easily then calculate percent of A on any category, etc. I can't find a good way that isn't convoluted...

User5231_0-1706478963489.png

 

@Greg_Deckler I found Round 2 of these challenges and realized that addresses what is essentially what I am looking at here.

Sir, would you mind telling me how you can get sales for sameperiodlastyear without using calculate, knowing that the date table doesn't have date column, only year and quarters?I tried using filter() and max(), but it does not bring the correct values .

@LuisMacedo Get your current year, maybe VAR __Year = MAX('Date'[Year]) then VAR __PY = __Year - 1, then filter ALL of your fact table where Year column = __PY? Hard to say exactly without knowing your data.


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DAX is easy, CALCULATE makes DAX hard...
Greg_Deckler
Super User
Super User

@AlexisOlson 

 

Sales Amount (Delivered) NC = 
    VAR __Dates = SELECTCOLUMNS('Calendar',"DateKey",[DateKey])
    VAR __Table = FILTER(ALLSELECTED('Sales'), [DeliveredDateKey] IN __Dates)
    VAR __Result = SUMX(__Table, [SalesAmount])
RETURN
    __Result

In my testing the measures return within 50 milliseconds of one another.

 


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DAX is easy, CALCULATE makes DAX hard...

Nice!

 

Now try it without the slicer filtering and see how the performance compares. 🙂

@AlexisOlson This one doesn't use CALCULATE either (LOL!) and is actually 3 times faster than the original measure from a DAX Query perspective.

NC3 = 
 VAR __Table = CALCULATETABLE('Sales', USERELATIONSHIP ( Sales[DeliveredDateKey], 'Calendar'[DateKey] ))
 VAR __Result = SUMX(__Table, [SalesAmount])
RETURN
 __Result

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DAX is easy, CALCULATE makes DAX hard...

@Greg_Deckler Ha! The performance of that is the same as my CALCULATE version in my testing.

 

For a final challenge, see if you can write a cumulative version without CALCULATE or CALCULATETABLE that refreshes in under 10 seconds with no slicer filtering. The CALCULATE version refreshes in about 0.2 sec, including all the overhead:

AlexisOlson_1-1679516248885.png

 

Cumulative Sales Amount (Delivered) = 
VAR _MaxDate = MAX ( 'Calendar'[DateKey] )
VAR _Result =
    CALCULATE (
        SUM ( Sales[SalesAmount] ),
        USERELATIONSHIP ( Sales[DeliveredDateKey], 'Calendar'[DateKey] ),
        ALL ( 'Calendar' ),
        'Calendar'[DateKey] <= _MaxDate
    )
RETURN
    _Result

 

@AlexisOlson 
Here you go 

Cumulative Sales Amount (Delivered) 2 = 
VAR SelectedSales = ALLSELECTED ( Sales )
VAR SummarySales = 
    SUMMARIZE ( 
        SelectedSales, 
        Sales[DeliveredDateKey],
        "@SalesAnount", SUM ( Sales[SalesAmount] ) 
    )
VAR SummaryDates =
    SUMMARIZE ( 
        'Calendar',
        'Calendar'[Year],
        'Calendar'[MonthName],
        "@MaxDate", MAX ( 'Calendar'[DateKey] )
    )
RETURN
    SUMX ( 
        SummaryDates,
        VAR FilteredSales = FILTER ( SummarySales, [DeliveredDateKey] <= [@MaxDate] ) 
        RETURN
            SUMX ( FilteredSales, [@SalesAnount] )
    )

This is faster than yours. I guess @Greg_Deckler has a very good point 😉

@tamerj1 One other thing, on a whim decided to replace SUMMARIZE with GROUPBY. SUMMARIZE is waaaaaayyyy more performant than GROUPBY. Like orders of magnitude more performant.


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@Greg_Deckler 

To be honest somehow I cheated 😅

I couldn't do that without context transition so I thought ok, SUMMARIZE can do that as well. Yes indeed GROUPBY does not perform context transition therefore would perform slower in this case. 

@tamerj1 Wow! Super impressive! That is lightning fast!! I ran 10-15 tests and your version has DAX query timing that is on average 2-3 times faster than CALCULATE ( ~75 milliseconds versus ~200 milliseconds.  Overall time was consistently 100 milliseconds faster. @Anonymous 

 

The technique also works for the original problem and performs almost identically to the CALCULATE version.

 

NC4 = 
    VAR __SelectedSales = ALLSELECTED( 'Sales' )
    VAR __SummarySales = 
        SUMMARIZE(
            __SelectedSales,
            [DeliveredDateKey],
            "__SalesAmount", SUM( [SalesAmount] )
        )
    VAR __Dates = DISTINCT('Calendar'[DateKey])
    VAR __Result = 
        SUMX( FILTER( __SummarySales, [DeliveredDateKey] IN __Dates), [__SalesAmount])
RETURN

Once again, CALCULATE goes down in defeat.

 

 


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DAX is easy, CALCULATE makes DAX hard...

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