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Nguru Bretton Gitonga
WINDOW FUNCTIONS ,RANK , DENSE_RANK, ROW_NUMBER
Updated on Sep, 2026
Programming, Data Science, Data Analysis
Training 5 or more people ?
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We hope you enjoy your time here in this project-based seminar on PostgreSQL Window Functions for Analytics. This is a project that will teach users of POSTGRES how to use window functions to get information from a database, and it is designed to be done by hand.
You will walk away from this lesson having gained an understanding of how to apply a variety of window functions in order to extract the result you want from a database. You will learn how to modify data with PostgreSQL window methods like as ROW NUMBER(), RANK(), and DENSE RANK() through the course of working on this project (). In addition to that, we will discuss the application of aggregate window functions. In order to query this database, we will make use of these window functions in conjunction with the OVER() clause.
In a video that plays on a split-screen with your work area, your instructor will walk you through these steps:
Students of all skill levels will find it simple and uncomplicated to understand and participate in the instruction. Invest in yourself and grow professionally by being familiar with Window Functions the use of straightforward examples that are presented in detail.
DENSE_RANK which Ranks the current row within its partition without gaps.
They will also learn about ROW_NUMBER
They will also learn about RANK
We will have examples on the RANK, ROW_NUMBER & DENSE_RANK
To complete this course you need some knowledge of SQL Queries.
Check out the detailed breakdown of what’s inside the course
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