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Panda2018 Member
Member

Calculate Turn Around Time

Hi, I have done turn around time (TAT) in Excel using NETWORKDAYS formula.

Here is the example below. How can I do this in Power BI using Contact Date & Date Written?

 

TAT.PNG

 

Thanks,

spanda

1 ACCEPTED SOLUTION

Accepted Solutions
Nick_M New Contributor
New Contributor

Re: Calculate Turn Around Time

Sure thing. I will use your first table as the starting point.  You can use excel to build a date table and then import, or use the CALENDAR function in DAX to create one.  I went with the DAX.

 

Calculations-->Modeling-->New Table.  Use the CALENDAR function.  Which needs a start and end date (which will cover in a sec).  Now, could use CALENDARAUTO which will find the start and end data automatically, but does so by searching the entire data model.  Would have worked fine in this small example, but in bigger data models that have date place holders as something like 1/1/9999, CALENDARAUTO will find that as the max.  So back to our CALENDAR function.  Need to find the Min and Max.  We wil do this by search each the Contact Date and Date writting columns and use the Min and Max of those two columns:

Date = 
CALENDAR(
	MIN (
		MIN (TurnAroundTIme[Contact Date]),
		MIN( TurnAroundTIme[Date Written])
	),
	MAX (
		MAX (TurnAroundTIme[Contact Date]),
		MAX( TurnAroundTIme[Date Written])
	)
)

Then add a calculated column for Day Name and then one to label using that day name to denote Weekday or Weekend:

Day = FORMAT('Date'[Date],"DDDD")

Day Type = 
SWITCH(
	'Date'[Day],
	"Saturday", "Weekend",
	"Sunday", "Weekend",
	"Weekday"
)

Here's the end result:

Date Table.png

 

Then need to mark as  Date Table so DAX knows to use that for the built-in time intelligence functions:

Mark as date table.png

Now that we have a calendar that we can use, setting up the DAX formulas should be much easier.   There's actually two ways we can do this, one using FILTER and one using DATESBETWEEN.  

TaT using Filter = 
CALCULATE(
    COUNTROWS( 'Date' ),
        FILTER( ALL('Date'),
		    MAX( TurnAroundTime[Contact Date]) <= 'Date'[Date]
		    && MAX( TurnAroundTime[Date Written]) >= 'Date'[Date]
            && 'Date'[Day Type] ="Weekday"
	    )
)

TaT using DatesBetween =
 CALCULATE(
	COUNTROWS( 'Date' ),
       DATESBETWEEN('Date'[Date],
		MAX( TurnAroundTime[Contact Date]) ,
		MAX( TurnAroundTime[Date Written])
    ),
    'Date'[Day Type] ="Weekday"
)

DATESBETWEEN leverages the use of the time-intelligence, but requires some additional logic to not give a figure when there is no Contact Date or Date Written field:

TaT using DatesBetween = 
IF (
    NOT
        OR(
         ISBLANK(MAX( TurnAroundTime[Contact Date])), 
         ISBLANK(MAX( TurnAroundTime[Date Written])
         )
    ),
    CALCULATE(
	    COUNTROWS( 'Date' ),
          DATESBETWEEN('Date'[Date],
	    	MAX( TurnAroundTime[Contact Date]) ,
	    	MAX( TurnAroundTime[Date Written])
      	),
    'Date'[Day Type] ="Weekday"
    )
 )

Then the final output:

Final Table.png

16 REPLIES 16
Super User
Super User

Re: Calculate Turn Around Time

If you dont want have a date table you can do it like this:

 

=
COUNTROWS(
    FILTER(
        CALENDAR( [Contact Date], [Date Written] ),
        WEEKDAY( [Date], 2 ) < 6
    )
)

 


 


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Panda2018 Member
Member

Re: Calculate Turn Around Time

Thanks @LivioLanzo

Its showing me this message now.

 

TAT 1.PNG

 

 

Thanks for your help!!

 

Super User
Super User

Re: Calculate Turn Around Time

Hi @Panda2018

 

as the error message says, you have some start dates which are after the end date, so you need to add a condition for this scenario

 


 


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Panda2018 Member
Member

Re: Calculate Turn Around Time

Thank  you @LivioLanzo!!

So how & where should I add the condition ? 

 

-Panda2018

Super User
Super User

Re: Calculate Turn Around Time

@Panda2018

 

It depends on what you are trying to achieve. What should happen when your start date is after your end date ?

 


 


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Community Support Team
Community Support Team

Re: Calculate Turn Around Time

@Panda2018,

 

You may just add IF Function as follows.

Column =
IF (
    Table1[Contact Date] > Table1[Date Written],
    BLANK (),
Community Support Team _ Sam Zha
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Panda2018 Member
Member

Re: Calculate Turn Around Time

Thank you @LivioLanzo !!

 

So I am trying to count the days it takes to write a note (Difference between Contact date & Date Written Date)

And it should not count the weekends or Holidays.

 

I tried this formula below. It works but it is counting the weekends & Holidays .

How should I do it? 

 

TAT = IF('2018-2019'[Contact Date]>'2018-2019'[Date Written],0 - DATEDIFF('2018-2019'[Date Written],'2018-2019'[Contact Date],DAY),DATEDIFF('2018-2019'[Contact Date],'2018-2019'[Date Written],DAY))

 

Thanks,

panda2018

Super User
Super User

Re: Calculate Turn Around Time

Can you post another dataset along with expected results?

 

thanks

 


 


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Panda2018 Member
Member

Re: Calculate Turn Around Time

@LivioLanzo Here is the data.

 

TAT 2.PNG

 

Hopw do I attach a Excel file?

Thanks!!