![]() For example, STL_QUERY and STL_QUERYTEXT contain the full text of INSERT, UPDATE, and DELETE statements. This article gave you a brief introduction to Amazon Redshift along with its key features.Giving a user unrestricted access to system tables gives the user visibility to data generated by other users. This example calculates the average delivery time in hours that customers waited for their packages after ordering. Order by shipping_time desc, shipping_module desc select shipping_module,ĭatediff(day, shipment_date, delivery_date) as shipping_timeįrom orders, shipment where orders.shipment_id = shipment.shipment_id This example joins the ORDERS and SHIPPING tables to calculate the delivery time for packages based on the shipping method. Suppose that we have an online store selling physical products and we want to calculate the shipping time for each order with the shipping method. Suppose we want to find the age of a person who was born ‘’ and we want to find his/her age in ‘’ select datediff(year, '', '') ![]() Output 4 3) Redshift DATEDIFF Function: Use-case ![]() select datediff(month, '', '') įind the difference in the number of weeks between two date values. select datediff(week, '', '') įind the difference in the number of months between two date values. The syntax of the Redshift DateAdd function is as follows: DATEADD (datepart, interval, ) 2) Redshift DATEDIFF Function: Exampleįind the difference in the number of weeks between two date values. Let’s look at the syntax, examples, and use cases of the Redshift DATEADD function: The DATEADD function is typically used when you have a date in mind and you’re trying to project the future or even trying to go back in the past. It returns the date after a certain time or date interval has been added. The DATEADD function returns a new DateTime value by adding an interval to the specified date part of the specified date or timestamp. To know more about Amazon Redshift, visit this link.
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