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n this video, we explore the connection between SQL and relational algebra using the World sample database . Learn how to ...

Set Theory is the foundation of Relational Databases Explained with SQL | Oracle SQL Joins & Set Operators ...

In this video, we solve a SQL interview question to find the highest salary in each department without using GROUP BY. Instead ...

SQL mock interview: Nikita Volynets (data engineer) runs a live SQL session with Almat, who is preparing for a data engineer role.