SQL Exercise: Average salaries of the employees works as ANALYST
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13. From the following table, write a SQL query to calculate the average salary of employees who work as analysts. Return average salary.
Sample table: employees
Pictorial Presentation:
Sample Solution:
SELECT avg(salary)
FROM employees
WHERE job_name = 'ANALYST';
Sample Output:
avg
-----------------------
3100.0000000000000000
(1 row)
Explanation:
The provided query in SQL that selects the average salary of all employees with the job title 'ANALYST' from the 'employees' table.
The "WHERE" clause filters the results of all employees with the job title 'ANALYST'.
Relational Algebra Expression:
Relational Algebra Tree:
Practice Online
Sample Database: employee
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Previous SQL Exercise: List the employees who joined before 1991.
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