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I know there has been some other posts about this, but I think mine is a little different.
I have two columns
SCHTM is the time a surgery is supposed to start
SurgTime is the time it actually starts.
I need to find the difference in the two. The problem is, sometimes it starts late, sometimes it starts early.
I have this in TimeDiff = DATEDIFF(patientinfo[SurgTime],patientinfo[SCHTM],MINUTE) but it gives me an error of "In DateDiff function, the start date cannot be greater than the end date"
Any help to calculate a positive or negative number? Both columns appear as 7:15:00 AM or 2:15:25 PM
Solved! Go to Solution.
Hi @kattlees,
Based on my test, the formula below should work in your scenario. It will return a positive number when starts late, and return negative number when starts early.
TimeDiff = IF ( patientinfo[SurgTime] <= patientinfo[SCHTM], - DATEDIFF ( patientinfo[SurgTime], patientinfo[SCHTM], MINUTE ), DATEDIFF ( patientinfo[SCHTM], patientinfo[SurgTime], MINUTE ) )
Regards
Hi @kattlees,
Based on my test, the formula below should work in your scenario. It will return a positive number when starts late, and return negative number when starts early.
TimeDiff = IF ( patientinfo[SurgTime] <= patientinfo[SCHTM], - DATEDIFF ( patientinfo[SurgTime], patientinfo[SCHTM], MINUTE ), DATEDIFF ( patientinfo[SCHTM], patientinfo[SurgTime], MINUTE ) )
Regards
Do an if statement @kattlees
if( date1 > date2, blank(), datediff statement)
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