Calculate difference between two date/time values

[CGanabelle]

Hi everyone,

I try to calculate the difference, in terms of time, between two datetime values. The problem is that when I use datediff, there is an error message : "In DATEDIFF function, the start date cannot be greater than the end date". This message isn't justify because the start date isn't greater than the end date...

I tried also a "simple" difference between the two dates (with DATE, RIGHT and LEFT) but it doesn't work because of the format.

An exemple of date : 2015-08-12T08:14:03.2830000.

Is there anyone that could help me please?
Sorry if the question seems basic, I'm not (yet) an expert in DAX :-)!

Thank you! Have a nice day!

[kkane]

Is there a DAX formula for calculating the elapsed hours between two date time values?

[sahal_BI]

How do i get the difference between two fruits from the previous day, see table below:
Current state:

Date	Fruit	Quantity
20/09/21	Apple	20
20/09/21	Orange	13
20/09/21	Grapes	30
21/09/21	Apple	18
21/09/21	Orange	9
21/09/21	Grapes	12
22/09/21	Apple	33
22/09/21	Orange	25
22/09/21	Grape	40

Desired State:

Date	Fruit	Quantity	Previous Quantity	Difference
20/09/21	Apple	20		20
20/09/21	Orange	13		13
20/09/21	Grapes	30		30
21/09/21	Apple	18	20	-2
21/09/21	Orange	9	13	-4
21/09/21	Grapes	12	30	-18
22/09/21	Apple	33	18	12
22/09/21	Orange	25	9	16
22/09/21	Grape	40	12	28

[CGanabelle]

Hi Angelia,

Thank you for your fournished answer! I found today the problem source! It was inconsistencies in the DB unfortunatly...

Again thank you for your help you both!

As a novice, I'm happy to see so much people ready to help me in this forum!

Have a nice day!

Regards,
Anabelle

[PavelR]

Hi @CGanabelle, awesome! Good to hear that you found the problem and that you have your expected result 

Regards

Pavel

[v-huizhn-msft]

@CGanabelle I am very glad to hear you find the problem.

Best Regards,
Angelia

[PavelR]

Hi @CGanabelle. I use DATEDIFF function and it works right.

I just used your example of date valu, then I created another one date value by adding one month and used DATEDIFF function.

Result is like this:

DAX: Diff = DATEDIFF(Table1[Date1];Table1[Date2];DAY)

Syntax for the function is:

DATEDIFF(<start_date>, <end_date>, <interval>

Maybe you just switched the two date columns (parameters) in the function.

Regards.

Pavel

[CGanabelle]

Thank you very much for you answer! I've just checked but the error still appear unfortunatly even when I change the format.. I'm going to check if there isn't some inconsistencies in the database.

Thank you again to have tried to help me :)!
Have a nice day,

Regards,
Anabelle

[v-huizhn-msft]

@CGanabelle

There will be a lot of work if your database have massive data.

In addition to other posts, you can also use the following formula to calculate the difference between two datetime values even though there are in inconsistencies in the database.

Diff = IF(Table1[Column1]<Table1[Column2],DATEDIFF(Table1[Column1],Table1[Column2],DAY),(-1)*DATEDIFF(Table1[Column2],Table1[Column1],DAY))

As display in screenshot, you will get the normal difference if the Column2 date is larger than Column1, otherwise it returns a negative number.

If you have any more questions, please don’t hesitate to ask.

Best Regards,
Angelia

[Anmolgan]

I have 2 dates one is stored inside my date and for other date I am using calculated column in order to store the end date into that, how an I calculate the difference in time period between those dates, I need the date period between all those dates is that possible with DAX?

How can I use calculated column inside my DAX and also I dont have a calender table inside my database.

2019-05-31 and end date is 2019-06-03 then the difference will give me 3 dates that is 2019-05-31,2019-06-01 2019-06-02 and 2019-06-03, in seprate rows.

[PavelR · Accepted solution]

Yeah, I would also try to look for some inconsistencies in DB. I hope you will find it! 

You are welcome Anabelle.

Regards.

Pavel