DateAdd function (Access custom web app)

Returns a specified date with the specified number interval (positive or negative integer) added to a specified date part of that date.

Note

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Syntax

DateAdd (DatePart, Number, Date)

The DateAdd function contains the following arguments.

Argument name	Description
DatePart	The part of Date to which an integer number is added. Refer to the Remarks section for the list of valid settings.
Number	Is an expression that can be resolved to an integer that is added to a DatePart of Date. If you specify a value with a decimal fraction, the fraction is truncated.
Date	An expression that can be resolved to a Date/Time value. The Date argument expression, column expression, user-defined variable or string literal.

Remarks

The following table lists all valid DatePart arguments.

DatePart
year
quarter
month
dayofyear
day
week
hour
minute
second
millisecond

Example

The following expression calculates the last day of the current month.

DateAdd(Day,-1,DateAdd(Month,DateDiff(Month,0,Today())+1,0))

The following expression calculates the last day of the previous month.

DateAdd(Day,-1,DateAdd(Month,DateDiff(Month,0,Today()),0))