Calculating Date/Time difference

[Bryanna]

Hi,

I am trying to calculate the average between two dates/times using DAX. I am using the following formula and it is returning a negative number even though the difference is the same date and should be -0 day 1 hr 25 mins for the first highlighted example. What am i doing wrong?

duration_average3 =

VAR total_second =

AVERAGEX(

    '90 Day Order Patterns Time',

    DATEDIFF('90 Day Order Patterns Time'[Date Closed],'90 Day Order Patterns Time'[Date Requested to Ship],SECOND)

)

VAR DAXDay   =  INT(total_second/(24*60*60))

VAR DAXHours =  MOD(INT(total_second/(60*60)),24)

VAR DAXMin   =  MOD(INT(total_second/60),60)

RETURN DAXDay &" Day "& DAXHours &" Hour "& DAXMin &" Minute "

Thanks!

[Bryanna]

Hi,

This looks much better thank you! I just removed the seconds portion since it had a very large number of decimal places.

[ppm1]

Please see this article for a better way to deal with dates/times/durations in DAX.

Calculate and Format Durations in DAX – Hoosier BI

Pat

[Bryanna]

Hi!

I tried swapping as well but some still look odd. Still shows as a negative but they shipped it sooner than the requested ship date.

[FreemanZ · Accepted solution]

hi @Bryanna 
 

try this:

duration_average = 
VAR _seconds=
AVERAGEX(
    TableName,
    DATEDIFF( TableName[DateRequested], TableName[DateClosed], SECOND)
)
VAR _secondsABS = ABS(_seconds)
VAR _day = TRUNC(_secondsABS/(24*60*60))
VAR _hour = TRUNC( MOD(_secondsABS, 24*60*60)/(60*60))
VAR _minute = TRUNC( MOD(_secondsABS, 60*60)/60)
VAR _second = MOD(_secondsABS, 60)
RETURN
IF(
    _seconds<=0,
    _day&" Day "& _hour&" Hour "& _minute&" Minute "&_second&" Second Ahead",
    _day&" Day "& _hour&" Hour "& _minute&" Minute "&_second&" Second Delay"
)

i tried with such data:

DateClosed	DateRequested
9/10/2022 11:00:08	9/10/2022 15:00:00
9/12/2022 11:00:08	9/12/2022 13:00:00
9/14/2022 19:00:08	9/14/2022 13:00:00

it worked like this:

The tricky part is the behaviour of TRUNC/INT/MOD for negative values. Lemme try to depict it in Excel:

[FreemanZ]

hi @Bryanna 

the arguments for DATEDIFF seem reversed. Try swap places.