sqlserver datediff_big

DATEDIFF_BIG is a function in Microsoft SQL Server that returns the difference between two dates in microseconds, milliseconds, seconds, minutes, hours, days, weeks, months, quarters, or years. It is similar to the DATEDIFF function, but it can handle larger date ranges.

The syntax of DATEDIFF_BIG is:

DATEDIFF_BIG (datepart, startdate, enddate)

where datepart is the interval to use for calculation, startdate is the starting date, and enddate is the ending date.

For example, to calculate the number of days between two dates in SQL Server, you can use the following query:

SELECT DATEDIFF_BIG(day, '2021-01-01', '2021-12-31')

This will return the number of days between January 1, 2021, and December 31, 2021.