If the second date or time is earlier than the first date or time, the result is negative. If the second date or time is later than the first date or time, the result is positive. The following code snippet provides an e. The expressions must both contain the specified date or time part. datediff() - Stack Overflow It appears that Redshift supports two possible functions for computing a time interval distance between two DATE-like objects: DATEDIFF() & datediff(). 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. ![]() Redshift is available based on a subscription payment model. It is known for its ability to scale seamlessly, support petabytes of data storage, and super-fast querying ability. 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. Talha September 20th, 2021 Redshift is a completely managed data warehouse service offered by Amazon Web Services. In this case, the function returns 1 year despite the fact that these dates are only one day apart. For example, suppose that you're calculating the difference in years between two dates, 12-31-2008 and 01-01-2009. While migrating the code from Redshift you will need to rewrite this function. Specifically, DATEDIFF determines the number of date part boundaries that are crossed between two expressions. DATEDIFF is the equivalent for DATEDIFF with datepart function in Bigquery.DATETRUNC This function can be thought of as date rounding. DATEPART Returns the name of the specified date part as an integer. DATEPARSE Returns specifically formatted strings as dates. DATENAME Returns the name of the specified date part as a discrete string. Like most other relational databases such as MySQL, SQL Server, Oracle, DB2, etc., Redshift can handle and manipulate time series data. DATEDIFF Returns the number of date parts (weeks, years, etc) between two dates. ![]() For more information, see Date parts for date or timestamp functions. Redshift is a database provided as a part of AWS (Amazon Web Services), based on the Postgres database, but with some differences. ![]() 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.
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