In this video, I have discussed how to solve the SQL Interview Questions: Write an SQL query using a recursive CTE to retrieve the hierarchical structure of employees.

Creating the Employees Table

CREATE TABLE Employees (
EmployeeID INT PRIMARY KEY, Unique identifier for each employee
ManagerID INT NULL, This refers to the EmployeeID of the manager (NULL if toplevel employee)
EmployeeName VARCHAR(100) NOT NULL Name of the employee
);

Inserting Sample Data

INSERT INTO Employees (EmployeeID, ManagerID, EmployeeName)
VALUES
(1, NULL, 'Alice'),
(2, 1, 'Bob'),
(3, 1, 'Charlie'),
(4, 2, 'David'),
(5, 2, 'Eve'),
(6, 3, 'Frank'),
(7, 4, 'Grace');

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