CASE WHEN modifiedat IS NULL THEN DATEDIFF ( days, createdat. If the second date or time is earlier than the first date or time, the result is negative. AmazonAmazon Redshift (30) Error occurred while trying to execute a query. If the second date or time is later than the first date or time, the result is positive. The expressions must both contain the specified date or time part. 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. The DateDiff function used in redshift has three arguments in it, we specify the dates for which we want to find the difference. The usage of the datediff is similar in all the databases except for the parameters that we use in the syntax.

We used TODATE to create a date from a string, and we used date arithmetic. Redshift DateDiff is used to find the difference between the specified dates. We've used Redshift's built-in functions to get today's date and time in the example above. 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. select currentdate today, currenttimestamp now, currenttime timenow, todate ( '28-10-2010', 'DD-MM-YYYY' ) todayfromstr, currentdate + 1 tomo.

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. Specifically, DATEDIFF determines the number of date part boundaries that are crossed between two expressions.

Introduction to Amazon Redshift Image Source Amazon Redshift is a fully managed Cloud Data Warehouse service with petabyte-scale storage. The syntax for using the DATEDIFF function in Snowflake and Amazon Redshift, and Databricks looks like the following: datediff(, , ) A note on Databricks: Databricks additionally supports a separate DATEDIFF function that takes only two arguments: a start date and an end date. date diff redshift

For more information, see Date parts for date or timestamp functions. Redshift DATEDIFF Function: Use-case Conclusion Prerequisites A successfully set-up Redshift Data Warehouse. 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.

Date diff redshift