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 FileMaker Pro Custom Functions

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DateOffset ( startdate ; monthoffset ; dayoffset ; yearoffset)

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  Average rating: 4.6  (38 votes)
  Discuss this Custom Function

Erik Wegweiser, Intelligent Database
http://intelligentdb.com

Returns a start date, plus or minus a specified number of months, days or years.

Sample Input:
DateOffset ( tuday ; -18 ; 7 ; 0)
Sample Output:
3/29/2006 [ if tuday is 9/22/2007]


 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Click here to copy To Clip Manager if you have myFMbutler's Clip Manager installed

Description:

Returns a start date, plus or minus a specified number of months, days or years. For example, avoids the need for substituting the less accurate "365 * 1.5" (or 547 or 547.5? or 548) for an 18-month offset in date calculations. Also makes it easier to read and remember that the date is adjusted by 18 months (rather than remember what 547 days represents).

Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it

Discuss:

Eric,
Thanks for the CF. It worked perfectly. I needed to select records for a 12 month period starting with the month the client wanted and going backwards for 11 months. Your function was great in solving this problem. Thanks for sharing.

Michele Olson, Minnesota
July 10, 2012 7:33pm

What about March 31 plus one month? The above gives May 1 but wouldn't you want April 30?

David, USA
February 01, 2015 8:19pm

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