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String Functions: Asc Chr Concat with & CurDir Format InStr InstrRev LCase Left Len LTrim Mid Replace Right RTrim Space Split Str StrComp StrConv StrReverse Trim UCase Numeric Functions: Abs Atn Avg Cos Count Exp Fix Format Int Max Min Randomize Rnd Round Sgn Sqr Sum Val Date Functions: Date DateAdd DateDiff DatePart DateSerial DateValue Day Format Hour Minute Month MonthName Now Second Time TimeSerial TimeValue Weekday WeekdayName Year Other Functions: CurrentUser Environ IsDate IsNull IsNumeric
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SQL Server DATEADD() Function

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Example

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.

Syntax

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

Example

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

SELECT DATEADD(month, 2, '2017/08/25') AS DateAdd;
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Example

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

SELECT DATEADD(month, -2, '2017/08/25') AS DateAdd;
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Example

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;
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