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LastMonth_withYear ( Date2Process )

Calculate the last month and also include the year

  Average rating: 4.3 (4 votes) Log in to vote

João Coutinho - Show more from this author http://www.joaocoutinho.net

  Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

Let ( [ CurrentMonth = Month ( Date2Process ); CurrentYear = Year ( Date2Process ); LastMonth = If ( CurrentMonth = 1 ; 12 ; CurrentMonth - 1 ); CorrectYear = If ( CurrentMonth = 1 ; CurrentYear - 1 ; CurrentYear ); FinalDate = LastMonth & "/" & CorrectYear ] ;    FinalDate ) Click to copy

When you need to calculate the last month to make searches on the Database, it's difficult to have a good result when you are in January. This function resolves this problem calculating the last month and also including the correct year.

 

Comments

		19752, fmc Jan 11, 2018
You can get the last day of the last month as date-Day(date), then this can be Let ( d = Date2Process - Day ( Date2Process ) ; SerialIncrement ( "00/" ; Month ( d ) ) & Year ( d ) )

		João Coutinho Jan 12, 2018
Thanks for the suggestion. But I used this custom function for searches, so I really don't need the day.

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