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Dynamics 365 Community / Forums / Microsoft Dynamics AX (Archived) / Logic problem - UTC da...
Microsoft Dynamics AX (Archived)

Logic problem - UTC dateTime comparison

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Posted on by Ashein 275

I have these records in my table:

11/11/2015 04:48:05 pm

11/11/2015 04:50:58 pm

11/11/2015 05:07:17 pm

11/11/2015 05:08:32 pm 

When i use my DateTimeUtil::getSystemDateTime(); - todays time

i need to compare the other records with todays time, to find the record which is closest to the current datetime.

I am thinking of using DateTimeUtil::getDifference but i can't make the logic right when there are more then two UTC dateTime.

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  • Verified answer
    Martin Dráb Profile Picture
    Martin Dráb 235,979 Most Valuable Professional on at
    RE: Logic problem - UTC dateTime comparison

    You'll need two queries:

    • find highest time lower than or equal to the current time
    • find lowest time higher than or equal to the current time

    Then compare these two values and you're done.

  • Ashein Profile Picture
    Ashein 275 on at
    RE: Logic problem - UTC dateTime comparison

    Even when i use DateTimeUtil::utcNow(), how can i get the the closest record that is to the current time ? when i use < or > i get all the records, not the lowest.

    And i will remember to not use # and seperate the tags

  • Suggested answer
    Martin Dráb Profile Picture
    Martin Dráb 235,979 Most Valuable Professional on at
    RE: Logic problem - UTC dateTime comparison

    You don't need getDifference() or any unusual operator, operators such as < and > will do the job. The problem is that you're comparing apples and oranges: UTC values in database with the local time returned by DateTimeUtil::getDifference(). The easiest way is to get the current UTC time by calling DateTimeUtil::utcNow().

    By the way, please make sure that you separate tags by comma or semicolon and don't prefix them with # (this is no Twitter). You created a single tags with text #Datecomparison #UTCDateTime #, which wasn't very useful.

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