SQL Exercise: List all the employees whose designation is CLERK

Last update on December 20 2024 11:59:34 (UTC/GMT +8 hours)

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20. From the following table, write a SQL query to find those employees whose designation is ‘CLERK’. Return complete information about the employees.

Sample table: employees

Pictorial Presentation:

Sample Solution:

SELECT *
FROM employees
WHERE job_name = 'CLERK';

Sample Output:

 emp_id | emp_name | job_name | manager_id | hire_date  | salary  | commission | dep_id
--------+----------+----------+------------+------------+---------+------------+--------
  63679 | SANDRINE | CLERK    |      69062 | 1990-12-18 |  900.00 |            |   2001
  68736 | ADNRES   | CLERK    |      67858 | 1997-05-23 | 1200.00 |            |   2001
  69000 | JULIUS   | CLERK    |      66928 | 1991-12-03 | 1050.00 |            |   3001
  69324 | MARKER   | CLERK    |      67832 | 1992-01-23 | 1400.00 |            |   1001
(4 rows)

Explanation:

The provided query in SQL that retrieves all the rows from the 'employees' table where the "job_name" column has a value of 'CLERK'.

The result will include all columns of the selected rows.

Relational Algebra Expression:

Relational Algebra Tree:

Practice Online

Sample Database: employee

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