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I am using the datediff function and it doesn't seem to be working.

What I am currently using

DATEDIFF(year, creation_date__c, SYSDATETIMEOFFSET()) AS AnniversaryYears

It just gives an empty result in the data extension for AnniversaryYears.

creation_date__c is of the following format: Monday, December 05, 2016 12:00 AM

Any idea what I might be doing wrong?

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  • 2
    in your DE, is creation_date__c a Date field or a text field? – zuzannamj Dec 5 '19 at 13:47
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If your field creation_date__c is of the correct type, date, this should fulfil your use case:

SELECT
DATEDIFF(year, creation_date__c, getdate()) AS AnniversaryYears
FROM
DataExtensionName

Result:

enter image description here

The difference between GETDATE() and SYSDATETIMEOFFSET() is that the latter will just add the time zone, which won't be comparable to creation_date__c since it doesn't have a timezone.

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  • It is of the datetime type, so your solution is also not working :/ – user3485470 Dec 5 '19 at 14:02
  • sure, but what do you see in the Data Extension properties for that field? Does it say Date or Text or something else? – zuzannamj Dec 5 '19 at 14:12
  • Date, like you show in the screenshot. My bad. – user3485470 Dec 5 '19 at 14:13
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    @user3485470 Can you post your full query into your question, it may be a syntax issue outside of this snippet that is causing the issue. – Gortonington Dec 5 '19 at 14:28
  • I was mapping it to the wrong attribute. I had AS AnniversaryYears while the attribute was called YearsAnniversary. Ima cry myself to sleep. Thanks anyways! Would have expected an error message for that invalid mapping though. – user3485470 Dec 5 '19 at 14:36
4

The issue might be that the date format of the two is not matching correctly.

Try using:
DATEDIFF(year, CAST(creation_date__c as DATE), CAST(getdate() as DATE))

So that you cast each as identical data types, which should remove any possible data mismatch.

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