PostgreSQL Summary Stats and Window Functions

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Free Online Course: PostgreSQL Summary Stats and Window Functions provided by DataCamp is a comprehensive online course, which lasts for 4 hours worth of material. The course is taught in English and is free of charge. Upon completion of the course, you can receive an e-certificate from DataCamp. PostgreSQL Summary Stats and Window Functions is taught by Fernando Gonzalez Prada and Michel Semaan.

via DataCamp

4 hours worth of material

Self Paced

Learn how to create queries for analytics and data engineering with window functions, the SQL secret weapon!

Have you ever wondered how data professionals use SQL to solve real-world business problems, like generating rankings, calculating moving averages and running totals, deduplicating data, or performing time intelligence? If you already know how to select, filter, order, join and group data with SQL, this course is your next step. By the end, you will be writing queries like a pro! You will learn how to create queries for analytics and data engineering with window functions, the SQL secret weapon! Using flights data, you will discover how simple it is to use window functions, and how flexible and efficient they are.

Syllabus

Introduction to window functions
-In this chapter, you'll learn what window functions are, and the two basic window function subclauses, ORDER BY and PARTITION BY.

Fetching, ranking, and paging
-In this chapter, you'll learn three practical applications of window functions: fetching values from different parts of the table, ranking rows according to their values, and binning rows into different tables.

Aggregate window functions and frames
-In this chapter, you'll learn how to use aggregate functions you're familiar with, like `AVG()` and `SUM()`, as window functions, as well as how to define frames to change a window function's output.

eyond window functions
-In this last chapter, you'll learn some techniques and functions that are useful when used together with window functions.

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Language

English
Certificate
Certificate Available
Date of Start
30th July, 2022
Price
Free Trial Available
Provider
DataCamp
Taught By

Fernando Gonzalez Prada and Michel Semaan
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