Tutorials References Menu

SQL Tutorial

SQL HOME SQL Intro SQL Syntax SQL Select SQL Select Distinct SQL Where SQL And, Or, Not SQL Order By SQL Insert Into SQL Null Values SQL Update SQL Delete SQL Select Top SQL Min and Max SQL Count, Avg, Sum SQL Like SQL Wildcards SQL In SQL Between SQL Aliases SQL Joins SQL Inner Join SQL Left Join SQL Right Join SQL Full Join SQL Self Join SQL Union SQL Group By SQL Having SQL Exists SQL Any, All SQL Select Into SQL Insert Into Select SQL Case SQL Null Functions SQL Stored Procedures SQL Comments SQL Operators

SQL Database

SQL Create DB SQL Drop DB SQL Backup DB SQL Create Table SQL Drop Table SQL Alter Table SQL Constraints SQL Not Null SQL Unique SQL Primary Key SQL Foreign Key SQL Check SQL Default SQL Index SQL Auto Increment SQL Dates SQL Views SQL Injection SQL Hosting SQL Data Types

SQL References

SQL Keywords MySQL Functions SQL Server Functions MS Access Functions SQL Quick Ref

SQL Examples

SQL Examples

MS Access DateDiff() Function

❮ MS Access Functions

Example

Return the difference between two dates, in years:

SELECT DateDiff("yyyy", #13/01/1998#, #09/05/2017#);
Try it Yourself »

Definition and Usage

The DateDiff() function returns the difference between two dates.

Syntax

DateDiff(datepart, date1, date2, firstdayofweek, firstweekofyear)

Parameter Values

Parameter Description
datepart Required. The part to return. Can be one of the following values:
  • yyyy = Year
  • q = Quarter
  • m = month
  • y = Day of the year
  • d = Day
  • w = Weekday
  • ww = Week
  • h = hour
  • n = Minute
  • s = Second
date1 and date2 Required. The two dates to calculate the difference between
firstdayofweek Optional. Specifies the first day of the week. Can be one of the following values:
  • 0 = Use the NLS API setting
  • 1 = Sunday (this is default)
  • 2 = Monday
  • 3 = Tuesday
  • 4 = Wednesday
  • 5 = Thursday
  • 6 = Friday
  • 7 = Saturday
firstdayofyear Optional. Specifies the first week of the year. Can be one of the following values:
  • 0 = Use the NLS API setting
  • 1 = Use the first week that includes Jan 1st (default)
  • 2 = Use the first week in the year that has at least 4 days
  • 3 = Use the first full week of the year

Technical Details

Works in: From Access 2000

More Examples

Example

Return the difference between two dates, in months:

SELECT DateDiff("m", #13/01/1998#, #09/05/2017#);
Try it Yourself »

Example

Return the difference between a specified date and today's date, in days:

SELECT DateDiff("d", #13/01/1998#, Date());
Try it Yourself »

❮ MS Access Functions