ENY interview Question | Divide Employees Into Teams Using Salary | CTE and DENSE_RANK Explained

n this video, learn how to solve an advanced SQL interview question: dividing employees into teams based on salary using CTEs, GROUP BY, HAVING, and the DENSE_RANK() function. We’ll guide you through the process step-by-step to create a query that satisfies the given conditions:
Each team must consist of at least two employees.
All employees on a team must have the same salary.
Employees with unique salaries are excluded from teams.
This query demonstrates practical applications of SQL for managing employee data and solving complex grouping problems-essential for SQL interviews and real-world database tasks.
📌 What You'll Learn:
Using Common Table Expressions (CTEs) in SQL.
How GROUP BY and HAVING work for filtering groups.
Practical use of DENSE_RANK() for team assignment.
✅ Who Should Watch:
Aspiring data analysts and SQL developers.
Professionals preparing for SQL job interviews.
Anyone seeking to improve their SQL problem-solving skills.
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Let me know if you'd like further refinements!
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----------------------Table Creation-----------------------------------------------
create table company(
emp_id int,
name varchar(20),
salary int
)
insert into company values(2,'Meir', 3000),
(3, 'Michael',3000),
(7, 'Addilyn', 7400),
(8, 'Juan', 6100),
(9, 'Kannon', 7400)