How can I retrieve specific data from any Database in the context of SQL?

Here are the solutions given related to the employee and department table queries in SQL:-

List all employees with their department names and their salaries:-

SELECT e.name, d.department_name, e.salary
FROM Employees e
INNER JOIN Department d ON e.department_id = d.department_id;
Find the total number of employees in every department:-
SELECT d.department_name, COUNT(e.employee_id) AS total_employees
FROM Employees e
INNER JOIN Department d ON e.department_id = d.department_id
GROUP BY d.department_name;
Determining the average salary of the employees of each department:-
SELECT d.department_name, AVG(e.salary) AS average_salary
FROM Employees e
INNER JOIN Department d ON e.department_id = d.department_id
GROUP BY d.department_name;
Identifying the department which has the highest paid employee and their information:- 
SELECT d.department_name, e.name AS employee_name, e.salary
FROM Employees e
INNER JOIN Department d ON e.department_id = d.department_id
WHERE e.salary = (SELECT MAX(salary) FROM Employees)
LIMIT 1;

This above example in the context of SQL would help you in retrieving the data from the database of employees and their departments.

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