SQL Exercise: List employees id, salary, and commission

Last update on December 20 2024 12:00:09 (UTC/GMT +8 hours)

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9. From the following table, write a SQL query to find the employee ID, salary, and commission of all the employees.

Sample table: employees

Pictorial Presentation:

Sample Solution:

SELECT emp_id,
       salary,
       commission
FROM employees;

Sample Output:

 emp_id | salary  | commission
--------+---------+------------
  68319 | 6000.00 |
  66928 | 2750.00 |
  67832 | 2550.00 |
  65646 | 2957.00 |
  67858 | 3100.00 |
  69062 | 3100.00 |
  63679 |  900.00 |
  64989 | 1700.00 |     400.00
  65271 | 1350.00 |     600.00
  66564 | 1350.00 |    1500.00
  68454 | 1600.00 |       0.00
  68736 | 1200.00 |
  69000 | 1050.00 |
  69324 | 1400.00 |
(14 rows)

Explanation:

The given query in SQL that selects the emp_id, salary, and commission columns from the 'employees' table.

Relational Algebra Expression:

Relational Algebra Tree:

Practice Online

Sample Database: employee

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