Example
SELECT DATEDIFF(year, '2017/08/25', '2011/08/25') AS DateDiff;Definition and Usage
The DATEDIFF() function returns the difference between two dates, as an integer.
Syntax
DATEDIFF(
interval
,
date1
,
date2
)Parameter Values
| Parameter | Description |
|---|---|
| interval | Required. The part to return. Can be one of the following values: year, yyyy, yy = Year quarter, qq, q = Quarter month, mm, m = month dayofyear = Day of the year day, dy, y = Day week, ww, wk = Week weekday, dw, w = Weekday hour, hh = hour minute, mi, n = Minute second, ss, s = Second millisecond, ms = Millisecond |
| date1, date2 | Required. The two dates to calculate the difference between |
- year, yyyy, yy = Year
- quarter, qq, q = Quarter
- month, mm, m = month
- dayofyear = Day of the year
- day, dy, y = Day
- week, ww, wk = Week
- weekday, dw, w = Weekday
- hour, hh = hour
- minute, mi, n = Minute
- second, ss, s = Second
- millisecond, ms = Millisecond
Technical Details
| Return type: | int |
|---|---|
| Works in: | SQL Server (starting with 2008), Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse |