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SQL Server DATEADD() Function

❮ SQL Server Functions


Add one year to a date, then return the date:

SELECT DATEADD(year, 1, '2017/08/25') AS DateAdd;
Try it Yourself »

Definition and Usage

The DATEADD() function adds a time/date interval to a date and then returns the date.


DATEADD(interval, number, date)

Parameter Values

Parameter Description
interval Required. The time/date interval to add. Can be one of the following values:
  • year, yyyy, yy = Year
  • quarter, qq, q = Quarter
  • month, mm, m = month
  • dayofyear, dy, y = Day of the year
  • day, dd, d = Day
  • week, ww, wk = Week
  • weekday, dw, w = Weekday
  • hour, hh = hour
  • minute, mi, n = Minute
  • second, ss, s = Second
  • millisecond, ms = Millisecond
number Required. The number of interval to add to date. Can be positive (to get dates in the future) or negative (to get dates in the past)
date Required. The date that will be modified

Technical Details

Works in: SQL Server (starting with 2008), Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse

More Examples


Add two months to a date, then return the date:

SELECT DATEADD(month, 2, '2017/08/25') AS DateAdd;
Try it Yourself »


Subtract two months from a date, then return the date:

SELECT DATEADD(month, -2, '2017/08/25') AS DateAdd;
Try it Yourself »


Add 18 years to the date in the BirthDate column, then return the date:

SELECT LastName, BirthDate, DATEADD(year, 18, BirthDate) AS DateAdd FROM Employees;
Try it Yourself »

❮ SQL Server Functions