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PowerPaddy's avatar
PowerPaddy
Frequent Visitor
9 years ago
Solved

DATEDIFF month interval not working as expected.

Hello again,   I'm using the DateDiff function to work out after how many months a policy was cancelled but it's not giving me the expected results. Cancellation Month = DATEDIFF([POLICYSTARTDAT...
General Comment
Need Help
  • v-sihou-msft's avatar
    v-sihou-msft
    9 years ago

    PowerPaddy

     

    To get more accurate "MONTHDIFF", you can create a column like below:

     

    Cancellation Month =
 ( 1
    * ( [CANCELDATE] - [POLICYSTARTDATE] ) )
    / DAY ( EOMONTH ( [CANCELDATE], 0 ) )

    Regards,

Greg_Deckler's avatar
Greg_Deckler
Icon for Community Champion rankCommunity Champion
9 years ago

Your understanding is incorrect. DATEDIFF counts the "interval boundaries" crossed between the two dates. Therefore, going from Jan 31st to Feb 1st crosses the month interval boundary (new month).

Harry_Long2's avatar
Harry_Long2
Regular Visitor
9 years ago

How would you get it so that the function returns 0 if the difference between the two dates is less than one exact month? For example, if the start date is Jan 31st and the cancelled date is 1st Feb, we get 0 rather than 1. 

 

Thanks!

  • Greg_Deckler's avatar
    Greg_Deckler
    Icon for Community Champion rankCommunity Champion
    9 years ago

    Well, that's sort of going to depend on your definition of 1 exact month I suppose. You could probably get close with something like this:

     

    Column = MROUND([DateCancelled]-[Date]*1.,30)/30