datetime_diff
The datetime_diff function calculates the number of the specified periods between two datetime values.
Syntax
datetime_diff( Period, Datetime1, Datetime2 )
Arguments
- Period: Possible values are:
Year,Quarter,Month,Week,Day,Hour,Minute,Second,Millisecond,Microsecond,Nanosecond. - DatetimeX: A datetime.
Returns
An integer, which represents amount of Periods in the result of subtraction (Datetime1 - Datetime2).
Examples
The following examples illustrate calling this function with different values for the Period argument:
printyear = datetime_diff('year',datetime(2017-01-01),datetime(2000-12-31))printquarter = datetime_diff('quarter',datetime(2017-07-01),datetime(2017-03-30))printmonth = datetime_diff('month',datetime(2017-01-01),datetime(2015-12-30))printweek = datetime_diff('week',datetime(2017-10-29 00:00),datetime(2017-09-30 23:59))printday = datetime_diff('day',datetime(2017-10-29 00:00),datetime(2017-09-30 23:59))printhour = datetime_diff('hour',datetime(2017-10-31 01:00),datetime(2017-10-30 23:59))printminute = datetime_diff('minute',datetime(2017-10-30 23:05:01),datetime(2017-10-30 23:00:59))printsecond = datetime_diff('second',datetime(2017-10-30 23:00:10.100),datetime(2017-10-30 23:00:00.900))printmillisecond = datetime_diff('millisecond',datetime(2017-10-30 23:00:00.200100),datetime(2017-10-30 23:00:00.100900))printmicrosecond = datetime_diff('microsecond',datetime(2017-10-30 23:00:00.1009001),datetime(2017-10-30 23:00:00.1008009))printnanosecond = datetime_diff('nanosecond',datetime(2017-10-30 23:00:00.0000000),datetime(2017-10-30 23:00:00.0000007))