SQL Exercise: Employees except given job in ASC order of salaries

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

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77. From the following table, write a SQL query to list all the employees except the PRESIDENT and the MANAGER in ascending order of salaries. Return complete information about the employees.

Pictorial Presentation:

Sample table: employees

Sample Solution:

SELECT *
FROM employees
WHERE job_name NOT IN ('PRESIDENT',
                       'MANAGER')
ORDER BY salary ASC;

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
  69000 | JULIUS   | CLERK    |      66928 | 1991-12-03 | 1050.00 |            |   3001
  68736 | ADNRES   | CLERK    |      67858 | 1997-05-23 | 1200.00 |            |   2001
  66564 | MADDEN   | SALESMAN |      66928 | 1991-09-28 | 1350.00 |    1500.00 |   3001
  65271 | WADE     | SALESMAN |      66928 | 1991-02-22 | 1350.00 |     600.00 |   3001
  69324 | MARKER   | CLERK    |      67832 | 1992-01-23 | 1400.00 |            |   1001
  68454 | TUCKER   | SALESMAN |      66928 | 1991-09-08 | 1600.00 |       0.00 |   3001
  64989 | ADELYN   | SALESMAN |      66928 | 1991-02-20 | 1700.00 |     400.00 |   3001
  69062 | FRANK    | ANALYST  |      65646 | 1991-12-03 | 3100.00 |            |   2001
  67858 | SCARLET  | ANALYST  |      65646 | 1997-04-19 | 3100.00 |            |   2001
(10 rows)

Explanation:

The said query in SQL that selects all columns of employees from ‘employees’ table whose job names are not 'PRESIDENT' or 'MANAGER', and orders the results in ascending order by salary.

The WHERE clause with NOT IN operator filters the results to include only those employees whose job name is not 'PRESIDENT' or 'MANAGER'.

The ORDER BY clause specifies that the results should be ordered by salary in ascending order.

Relational Algebra Expression:

Relational Algebra Tree:

Practice Online

Sample Database: employee

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