DATEDIFF

This function returns the count (as a signed integer value) of the specified datepart boundaries crossed between the specified startdate and enddate.

Syntax

DATEDIFF ( datepart , startdate , enddate )  

Arguments

datepart
The units in which DATEDIFF reports the difference between the startdate and enddate.

Note: Valid datepart arguments { year:"yy", quarter:"q", month:"mm", day:"dd", hour:"hh", minute:"mi", second:"s", millisecond:"ms" and "ns" }.

startdate
A value of the Date & Time data type category.

enddate
A value of the Date & Time data type category.

Return Value

Returns values of INT64 data type.

Remarks

DATEDIFF may overflow with a precision of minute or higher if the difference between enddate and startdate returns a value that is out of range for INT64.

Examples

Examples in this section use the example blockchain.

A. Specifying columns for startdate and enddate

This example calculates the minute difference between the two time values.

SELECT DATEDIFF("mi", TIME("11:00:00"), TIME("12:00:00"));

Response:

DATEDIFF("mi", TIME("11:00:00"), TIME("12:00:00")) [INT64]
60