Advanced
## Window Functions in MS SQL Server

Interactive Course

Learn how to use analytic T-SQL functions to deeply understand data.

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190 hours left

Window functions are so powerful that they serve as a dividing point in time: people talk about SQL Server before window functions and SQL Server after window functions. Because they were introduced into the standard relatively recently, these functions aren't covered in many T-SQL courses.

This course covers the syntax and semantics of T-SQL window functions. It shows how powerful they are, what the typical use cases are, and how to use ORDER BY and PARTITION BY to set up a frame for window functions. You'll also learn the difference between ROWS and RANGE clauses

This course is intended for intermediate users. We assume the user knows the basics of T-SQL, including:

- How to select from a single table, including writing complex WHERE conditions
- How to JOIN tables
- How GROUP BY and HAVING work

- A web browser
- Knowledge of basic T-SQL, including JOINs and GROUP BY clauses

- Compute running totals and running averages
- Build rankings
- Find best and worst performers
- Investigate trends across time
- Calculate contributions to the whole, such as commission percentages

You'll also get a deeper understanding of T-SQL aggregate functions.

- Beginning database analysts
- Developers who want to keep their knowledge of SQL Server current
- Students taking classes in relational databases
- Anyone who wants to learn SQL window functions

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Course progress

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Exercises completed

Window functions? We'll explain what they're all about

Exercises completed

Your first encounter with window functions

Exercises completed

Discover how to define a function window with PARTITION BY

Exercises completed

Learn how you can rank rows with window functions

Exercises completed

Learn how to create sophisticated window frames for your window functions

Exercises completed

Learn the most essential analytic functions

Exercises completed

Create advanced statistics computed independently for various groups of rows

Exercises completed

Do you know when window functions are evaluated in a T-SQL query? Let's find out!

Exercises completed

Master all the skills you've acquired so far with our practice set

Exercises completed

Test all the skills you've acquired so far with this comprehensive final quiz

Exercises completed