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oliverblane72
Frequent Visitor

Cumulative Distinct Count by Day Behaving Incorrectly with Filters

Hi there, I am trying to plot a cumulative distinct count graph of IDs from this table:

oliverblane72_0-1626969296139.png

I used the following DAX code to generate a cumulative distinct count table by date:

CumTable = SELECTCOLUMNS(
DISTINCT('Learner Info Daily'[Created Date]),
"Date", 'Learner Info Daily'[Created Date],
"CumUsers", CALCULATE(DISTINCTCOUNT('Learner Info Daily'[ID]), FILTER(ALLSELECTED('Learner Info Daily'), 'Learner Info Daily'[Created Date] <= EARLIER('Learner Info Daily'[created date]))
)
)

Which looks like:

oliverblane72_1-1626969421534.png

 

However, plotting this with slicers on "Location" does not behave as expected - the cumulative distinct count is the same for each location, the only difference being the x axis (since the dates at which certain locations started getting IDs was different for each):

oliverblane72_2-1626969507565.pngoliverblane72_3-1626969523941.png

The only relationship between the two tables is on the date column. I am confused as to where it is going wrong.

 

I appreciate any help on this - thank you!

 

1 ACCEPTED SOLUTION
Anonymous
Not applicable

 

 

// Please create a proper calendar in your
// model following the guidelines outlined here:
// https://dax.guide/dateadd
// and connect it to your fact table and remember
// that fact tables should always be hidden and
// slicing should only happen via dimensions. If
// you want to get into trouble, ignore the rule.
//
// Then you can write:

[# Distinct ID to Date] =
var CurrentDate = MAX( Dates[Date] )
return
	CALCULATE(
		DISTINCTCOUNT( 'Learner Info Daily'[LRN] ),
		KEEPFILTERS( Dates[Date] <= CurrentDate ),
		ALLSELECTED( Dates )
	)

 

 

View solution in original post

4 REPLIES 4
Anonymous
Not applicable

 

 

// Please create a proper calendar in your
// model following the guidelines outlined here:
// https://dax.guide/dateadd
// and connect it to your fact table and remember
// that fact tables should always be hidden and
// slicing should only happen via dimensions. If
// you want to get into trouble, ignore the rule.
//
// Then you can write:

[# Distinct ID to Date] =
var CurrentDate = MAX( Dates[Date] )
return
	CALCULATE(
		DISTINCTCOUNT( 'Learner Info Daily'[LRN] ),
		KEEPFILTERS( Dates[Date] <= CurrentDate ),
		ALLSELECTED( Dates )
	)

 

 

Hi there, I cannot thank you enough - your solution works perfectly!

 

One thing I am confused about is why we need ALLSELECTED( Dates ). Apologies if this is a silly question, I am quite new to DAX and Power BI.

 

Many thanks for your help!

Anonymous
Not applicable

Calculated tables are STATIC. Once calculated, they never change. You need a measure, not a table.

Right, I see! Thank you, Daxer.

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