Sql Diff Time. For millisecond the maximum difference between startdate and enddate is 24 days 20 hours 31 minutes and 23 647 seconds. If startdate and enddate are both assigned only a time value and the datepart is not a time datepart datediff returns 0.
This function allows you to obtain data from the previous record based on an order criterion which here is order by year. To calculate a difference you need a pair of records. Start date and end date are the dates to be compared.
For second the maximum difference is 68 years 19 days 3 hours 14 minutes and 7 seconds.
The datediff function returns the difference between two dates. To execute this scenario we can use following query select datediff hour sysdate 1sysdate as hours from dual. See the valid date parts in the table below. In this tutorial you have learned how to use the sql datediff function to calculate the difference between two dates.
