Checking the docs for Amazon Redshift shows this: DATEDIFF ( datepart, )ĭatepart: The specific part of the date or time value (year, month, or day, hour, minute, second, millisecond, or microsecond) that the function operates on. Specifically, DATEDIFF determines the number of date part boundaries that are crossed between two expressions.For more information, see Date parts for date or timestamp functions. For example, the dateadd () is one of the functions provided by Redshift. Basically, the dateadd () function is used to return the new date-time values by adding the required date and timestamp, or we can say the specified date and timestamp as per user requirement.įor example, suppose that you're calculating the difference in years between two dates, 12-31-2008 and 01-01-2009. In other words, we can say the dateadd () function is used to return the. In this case, the function returns 1 year despite the fact that these dates are only one day apart. If you are finding the difference in hours between two timestamps, 01-01-2009 8:30:00 and 01-01-2009 10:00:00, the result is 2 hours. If you are finding the difference in hours between two timestamps, 8:30:00 and 10:00:00, the result is 2 hours.ĭate|time|timetz|timestamp: A DATE, TIME, TIMETZ, or TIMESTAMP column or expressions that implicitly convert to a DATE, TIME, TIMETZ, or TIMESTAMP. Use the TIMESTAMPTZ data type to input complete timestamp values that include the date, the time of day, and a time zone. The expressions must both contain the specified date or time part. When an input value includes a time zone, Amazon Redshift uses the time zone to convert the value to UTC and stores the UTC value. To view a list of supported time zone names, run the following command. Ask Question Asked 1 year, 2 months ago Modified 3 months ago Viewed 2k times Part of AWS Collective 2 I tried the below but none of them work in redshift datediff (currentdate, strtodate (dob, 'd,-m-Y'))/365 as agetoday year (currentdate)-year (dob) as ageinyears The dob is in format 00:00:00.
How do you subtract dates in redshift Here are 3 ways to get yesterday’s date Subtract an interval from a date. If the second date or time is later than the first date or time, the result is positive. To find the difference between two dates in the same column, we need two dates from the same column. The usage of the datediff is similar in all the databases except for the. If the second date or time is earlier than the first date or time, the result is negative. Redshift DateDiff is used to find the difference between the specified dates.
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