SQL Exercise: Average salary, total remuneration for each type of job

Last update on December 20 2024 11:40:48 (UTC/GMT +8 hours)

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91. From the following table, write a SQL query to find the average salary and average total remuneration (salary and commission) for each type of job. Return name, average salary and average total remuneration.

Sample table: employees

Sample Solution:

SELECT job_name,
       avg(salary),
       avg(salary+commission)
FROM employees
GROUP BY job_name;

Sample Output:

 job_name  |          avg          |          avg
-----------+-----------------------+-----------------------
 CLERK     | 1137.5000000000000000 |
 SALESMAN  | 1500.0000000000000000 | 2125.0000000000000000
 MANAGER   | 2752.3333333333333333 |
 PRESIDENT | 6000.0000000000000000 |
 ANALYST   | 3100.0000000000000000 |
(5 rows)

Explanation:

The said query in SQL that selects job_name, the average salary, and the average total remuneration from the 'employees' table. The query then applies a grouping using the GROUP BY clause on the job_name column.

Relational Algebra Expression:

Relational Algebra Tree:

Practice Online

Sample Database: employee

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