PostgreSQL Subquery: Find the names of the employees who works in the IT department
2. Write a SQL subquery to find the first_name and last_name of all employees who works in the IT department.
Sample Solution:
Code:
SELECT first_name, last_name
FROM employees
WHERE department_id
IN (SELECT department_id
FROM departments
WHERE department_name='IT');
Sample table: employees
Output:
pg_exercises=# SELECT first_name, last_name pg_exercises-# FROM employees pg_exercises-# WHERE department_id pg_exercises-# IN (SELECT department_id pg_exercises(# FROM departments pg_exercises(# WHERE department_name='IT'); first_name | last_name ------------+----------- Alexander | Hunold Bruce | Ernst David | Austin Valli | Pataballa Diana | Lorentz (5 rows)
Practice Online
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Previous: Write a query to find the first_name, last_name and salaries of the employees who have a higher salary than the employee whose last_name is Bull.
Next: Write a SQL subquery to find the first_name and last_name of the employees under a manager who works for a department based in the United States.
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