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Posts: 132
Registered: ‎10-22-2017
Accepted Solution

Difference between two columns and finding the Average it

Dear All,

 

Please help me to write the formula to find the difference between two date columns and then take the average of that.

 

Below is the sample

 

LAST_UPDATED_DATECREATION_DATEDAY DIFF 
10/4/2018 0:009/30/2018 0:004Average =1.428571429
10/1/2018 0:009/30/2018 0:001 
10/1/2018 0:009/30/2018 0:001 
10/1/2018 0:009/30/2018 0:001 
10/1/2018 0:009/30/2018 0:001 
10/1/2018 0:009/30/2018 0:001 
10/1/2018 0:009/30/2018 0:001 

 

Average to be shown in the CARD visual.

 

Thanks in advance


Accepted Solutions
Member
Posts: 132
Registered: ‎10-22-2017

Re: Difference between two columns and finding the Average it

Hi @Greg_Deckler

 

Calculated Column for DATEDIFF is throwing an error saying "Function DATEDIFF is not allowed as part of calculated Column DAX expressions on DirectQuery models.

 

So I tried the DATEDIFF with Measure and it's accepting only with aggregate function like MIN,MAX etc,like below

1.DAY DIFF = DATEDIFF(MIN('Table1'[LAST_UPDATED_DATE]),MIN('Table1'[CREATION_DATE]),DAY)
 
2.AVG OF DAY = AVERAGEX('Table1','Table1'[DAY DIFF])
 
It's working fine.
 
Thank you so much for your timely support.

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AlB Super Contributor
Super Contributor
Posts: 1,182
Registered: ‎11-12-2018

Re: Difference between two columns and finding the Average it

Hi @Charu

 

Try this for your measure:

 

DiffAvg =
AVERAGEX ( Table1, Table1[ LAST_UPDATED_DATE] - Table1[CREATION_DATE] )

 

Super User
Posts: 10,508
Registered: ‎07-11-2015

Re: Difference between two columns and finding the Average it

Well, you should be able to create a column:

 

DAY DIFF = DATEDIFF([LAST_UPDATED_DATE],[CREATION_DATE],DAY)

 

And then a measure:

 

Average of DAY DIFF = AVERAGEX('Table',[DAY DIFF])


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Member
Posts: 132
Registered: ‎10-22-2017

Re: Difference between two columns and finding the Average it

Hi @AlB

 

When I create the AverageX measure with two date fields received the below error message

ORA-00904:"t6"."CREATION_DATE":invalid identifier.The exception was raised by the IDbCommand interface

 

 

Member
Posts: 132
Registered: ‎10-22-2017

Re: Difference between two columns and finding the Average it

Hi @Greg_Deckler

 

Calculated Column for DATEDIFF is throwing an error saying "Function DATEDIFF is not allowed as part of calculated Column DAX expressions on DirectQuery models.

 

So I tried the DATEDIFF with Measure and it's accepting only with aggregate function like MIN,MAX etc,like below

1.DAY DIFF = DATEDIFF(MIN('Table1'[LAST_UPDATED_DATE]),MIN('Table1'[CREATION_DATE]),DAY)
 
2.AVG OF DAY = AVERAGEX('Table1','Table1'[DAY DIFF])
 
It's working fine.
 
Thank you so much for your timely support.
Super User
Posts: 10,508
Registered: ‎07-11-2015

Re: Difference between two columns and finding the Average it

Glad you got it sorted out. Yeah, DirectQuery causes some issues with certain DAX functions.


Did I answer your question? Mark my post as a solution!

Proud to be a Datanaut!