MySQL Exercise: Display the name and department ID of all employees for department 30 or 100 in ascending order

MySQL Restricting and Sorting Data: Exercise-2 with Solution

Write a query to display the name (first_name, last_name) and department ID of all employees in departments 30 or 100 in ascending order.

Sample table: employees

Code:

SELECT first_name, last_name, department_id
FROM employees
WHERE department_id IN (30, 100)
ORDER BY  department_id  ASC;

Relational Algebra Expression:

Relational Algebra Tree:

Pictorial Presentation of the above query

MySQL Code Editor:

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