Course Content

  • SQL Functions

Course Content

FAQs

A window function, also known as an analytic function in SQL, is a function that returns a result for each row using values from one or more rows.

Analytic functions use a group of rows to calculate an aggregate value. Analytic functions, unlike aggregate functions, can return numerous rows for each group. To compute moving averages, running totals, percentages, or top-N outcomes inside a group, use analytic functions.

Users can utilise window functions to do calculations on partitions (also known as subgroups or sections) of a result set, such as a table or the results of another query.

Because they work with a "window frame" — a collection of rows related to the current row that may be specified more precisely with the ROWS or RANGE keywords.

Two functions that you can nest as an argument of a window aggregate function are referred to as nested window functions. The nested row number function and the nested value of expression at row function are the two functions.

Recommended Courses

Share With Friend

Have a friend to whom you would want to share this course?

Download LearnVern App

App Preview Image
App QR Code Image
Code Scan or Download the app
Google Play Store
Apple App Store
598K+ Downloads
App Download Section Circle 1
4.57 Avg. Ratings
App Download Section Circle 2
15K+ Reviews
App Download Section Circle 3
  • Learn anywhere on the go
  • Get regular updates about your enrolled or new courses
  • Share content with your friends
  • Evaluate your progress through practice tests
  • No internet connection needed
  • Enroll for the webinar and join at the time of the webinar from anywhere