Difference between two columns (date & time)

[p_fehrenbach]

Hello togehter,

is there a way to calculate the difference in hour + / - between two columns?

I have  column with Date / Time where the ticket is opend, the second columune include the Date / Time SLA.

So I need the difference, if the SLA is fall belows or they is exceeded.

Many thanks for help.

[speedramps]

HI p_fehrenbach 

Please consider using this solution in the M query .....

Define both the sla duration and actual duration with date time data types.

Add a column with Difference = sla duration - actual duration

Transform the Difference data type to minutes

Filter where the Difference  < 0

[p_fehrenbach]

@speedramps 

Many thanks for the answer. I had already tried that. unfortunately power query changes the type when I load the data into the model, from time to decimal. If I put the data back in time in the model, all decimal numbers are positive.

(The negativ value in this scenario is good one)

For Example in the last Row:

We finished te ticket at the 22.10.2019 16:30:00

It could have been closed until 23.10.2019 12:40.

The Result is + 20:10:00 hours.

The Result have to be - 20:10:00 hours.

[speedramps · Accepted solution]

Please consider this solution ..... 

https://www.absentdata.com/calculate-time-between-two-dates

and

https://radacad.com/calculate-duration-in-days-hours-minutes-and-seconds-dynamically-in-power-bi-usi...