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Calculates a date value by adding months to (or subtracting months from) a specified date value.





a date, or an expression that evaluates to a DATE data type


a number, or an expression that evaluates to a number

Return Value

Number, representing a DATE value.


Use $addmonths to perform arithmetic with date values. The $addmonths function calculates a date value by adding a number representing months to a date value. If number is negative, the effect is to subtract the months from the date.

The + (add) and – (subtract) operators can be used to achieve the same results.

If date or the result of the $addmonths expression is an invalid date (e.g., 19930231), it is adjusted to produce a valid date (e.g., 19930228).


If $Date has the value 19981225, then:


Evaluates to 19990325.


Evaluates to 19980925.


Evaluates to 20000825.


Evaluates to 19980228 (note truncation).


See Also








+ (Add/Positive)

About Functional Expressions

Arithmetic with Dates

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