DATEADD adds or subtract a number of days, months, or years from a specific date. : DATEADD « Date Functions « SQL Server / T-SQL Tutorial

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SQL Server / T-SQL Tutorial » Date Functions » DATEADD

10. 3. 1. DATEADD adds or subtract a number of days, months, or years from a specific date.


To subtract days, use a negative number in the second parameter



9> SELECT DATEADD(dd,12,"24 March 1964")

10> GO



-----------------------

1964-04-05 00:00:00.000



(1 rows affected)



The syntax for DATEADD requires 3 parameters.



DATEADD(what_to_add,number_to_add,date_to_add_it_to)



The first parameter can define what you are wishing to add to the date.

10. 3. DATEADD
	10. 3. 1.	DATEADD adds or subtract a number of days, months, or years from a specific date.
	10. 3. 2.	DATEADD adds a time interval to a date in order to arrive at the new date: DATEADD(datepart,number,date)
	10. 3. 3.	Determine the date 90 days after April 29, 1988
	10. 3. 4.	select DATEADD(day, 1, '2002-09-30 11:35:00')
	10. 3. 5.	select DATEADD(month, 1, '2002-09-30 11:35:00')
	10. 3. 6.	select DATEADD(year, 1, '2002-09-30 11:35:00')
	10. 3. 7.	select DATEADD(hour, 1, '2002-09-30 11:35:00')
	10. 3. 8.	select DATEADD(minute, 1, '2002-09-30 11:35:00')
	10. 3. 9.	select DATEADD(second, 1, '2002-09-30 11:35:00')
	10. 3. 10.	select DATEADD(quarter, 1, '2002-09-30 11:35:00')
	10. 3. 11.	select DATEADD(week, 1, '2002-09-30 11:35:00')
	10. 3. 12.	select DATEADD(month, -1, '2002-09-30 11:35:00') (Minus)
	10. 3. 13.	select DATEADD(year, 1.5, '2002-09-30 11:35:00')
	10. 3. 14.	SELECT DATEADD(day, 14, GETDATE())
	10. 3. 15.	Calculating the First Day of the Month
	10. 3. 16.	Finding the Last Day of the Month

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