Microsoft SQL Server Development for Everyone - Grouping Data using the SQL GROUP BY Clause

The video tutorial explains the SQL Group By statement, its differences from Select Distinct, and how it is used with aggregate functions to group data and perform calculations like count, average, max, and min. Practical examples demonstrate how to write SQL queries using Group By, handle errors, and use aliases to avoid ambiguity in queries.

What is the effect of using GROUP BY on a dataset with unique rows?

How can you eliminate unnecessary data when using GROUP BY?

Describe a scenario where using GROUP BY would be beneficial.

What role do aliases play when working with multiple tables in a GROUP BY query?