start: The start date or timestamp string.part: The date or time part to compute the difference (e.g., day, month, year, hour, minute, second) inputted as a string.This function is especially useful for calculating intervals, such as the number of days between two dates or the hours between two timestamps. Implementing DATEDIFF in Redshift simply computes the difference between two dates or timestamps. Luckily for us, Amazon Redshift provides handy functions out of the box for us to leverage. Working with dates as a human is typically quite annoying - the Gregorian calendar invented by Pope Gregory XIII in October 1582 clearly did not have date-based analytics in mind when he created this new calendar. We’ve all been there: “So my flight is on the 21st September and it's currently the 10th June…how many days do I need to survive before I go on holiday?.30 days have September, April, June, and November…”
#DATE DIFF REDSHIFT HOW TO#
How to Use the Amazon Redshift DATEDIFF Function A typical use case of Redshift is for time-based analytics as analysts and engineers often are interested in parsing data over a set period of time to gain valuable point-in-time insights. With Petabyte level storage and lightning-fast querying, it is a highly flexible and performant solution and when combining this with all of the obvious benefits of AWS cloud integrations it can slot very nicely into any AWS cloud platform.Īs such a popular solution the demand for Amazon Redshift expertise is growing, and being able to set yourself apart from the pack is key to securing new roles in the industry and being maximally effective to provide the most value within your team.
In this article, we'll dive into the inner workings of these functions and provide examples to help you master them and become a true time-lord! What is Amazon Redshift?Īmazon Redshift is a gold standard in the data industry providing a cloud-based data warehouse service that can scale to handle the data of any organization, large or small. Among these, the Redshift DATEDIFF and DATEADD are two essential tools for manipulating and analyzing dates. Redshift provides a rich set of functions to work with dates and times. How to Use the Amazon Redshift DATEADD Function.How to Use the Amazon Redshift DATEDIFF Function.
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