How to get difference between two hour, without negative value

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I hava problem about query

i want to get difference between two hours

example

SELECT DATEDIFF(HOUR, '09:00:00', '10:00:00') AS [Durée en Seconds]

the result is '1'

but when i use this query

SELECT DATEDIFF(HOUR, '10:00:00', '09:00:00') AS [Durée en Seconds]

What I have tried:

How can i get the difference hour ,always in positive value

I wish the result in seconde query is '1'

How can i solve this?

Posted 7-Jun-20 18:11pm

Member 14760154

Updated 8-Jun-20 1:34am

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2 solutions

Solution 2

If you read the documentation for the DateDiff[^] function, you will see that the usage is
DATEDIFF ( datepart , startdate , enddate )

If the StartDate is before the EndDate, the result will be a positive number.
If the StartDate occurred after EndDate, the result will be a negative.

If you always want a positive number, then you use the Abs[^] function as outlined by Patrice
And if you always want a negative number; then you use the Abs function and multiply by -1.

References:
DATEDIFF (Transact-SQL) - SQL Server | Microsoft Docs[^]
ABS (Transact-SQL) - SQL Server | Microsoft Docs[^]

Posted 8-Jun-20 1:34am

MadMyche

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Patrice T · Accepted Answer · 2020-06-07T18:17:00

Solution 1

Quote:
How can i get the difference hour ,always in positive value

Did you try ABS() (absolute value function) ?

Posted 7-Jun-20 18:17pm

Patrice T

Comments

Member 14760154 8-Jun-20 1:49am

yes i did,and it succes,

now problem is solved

Patrice T 8-Jun-20 2:01am

You can also accept the solution, it will close the question and say everyone that question is slved.

CPallini 8-Jun-20 2:15am

5.

Patrice T 8-Jun-20 2:16am

Thank you

MadMyche 8-Jun-20 10:24am

+5, and referenced in my answer

Patrice T 8-Jun-20 13:25pm

Thank you