SQL Exercise: Employees in ascending and descending order

Last update on December 20 2024 11:59:57 (UTC/GMT +8 hours)

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67. From the following table, write a SQL query to list employees in ascending order on department ID and descending order on jobs. Return complete information about the employees.

Pictorial Presentation:

SQL exercises on employee Database: List the details of the employees in ascending order to the department_id and descending order to the jobs

Sample table: employees

Sample Solution:

SELECT *
FROM employees
ORDER BY dep_id ASC,
         job_name DESC;

Sample Output:

 emp_id | emp_name | job_name  | manager_id | hire_date  | salary  | commission | dep_id
--------+----------+-----------+------------+------------+---------+------------+--------
  68319 | KAYLING  | PRESIDENT |            | 1991-11-18 | 6000.00 |            |   1001
  67832 | CLARE    | MANAGER   |      68319 | 1991-06-09 | 2550.00 |            |   1001
  69324 | MARKER   | CLERK     |      67832 | 1992-01-23 | 1400.00 |            |   1001
  65646 | JONAS    | MANAGER   |      68319 | 1991-04-02 | 2957.00 |            |   2001
  63679 | SANDRINE | CLERK     |      69062 | 1990-12-18 |  900.00 |            |   2001
  68736 | ADNRES   | CLERK     |      67858 | 1997-05-23 | 1200.00 |            |   2001
  69062 | FRANK    | ANALYST   |      65646 | 1991-12-03 | 3100.00 |            |   2001
  67858 | SCARLET  | ANALYST   |      65646 | 1997-04-19 | 3100.00 |            |   2001
  65271 | WADE     | SALESMAN  |      66928 | 1991-02-22 | 1350.00 |     600.00 |   3001
  64989 | ADELYN   | SALESMAN  |      66928 | 1991-02-20 | 1700.00 |     400.00 |   3001
  66564 | MADDEN   | SALESMAN  |      66928 | 1991-09-28 | 1350.00 |    1500.00 |   3001
  68454 | TUCKER   | SALESMAN  |      66928 | 1991-09-08 | 1600.00 |       0.00 |   3001
  66928 | BLAZE    | MANAGER   |      68319 | 1991-05-01 | 2750.00 |            |   3001
  69000 | JULIUS   | CLERK     |      66928 | 1991-12-03 | 1050.00 |            |   3001
(14 rows)

Explanation:

The said query in SQL that retrieves all the rows from the 'employees' table and order them first by the "dep_id" column in ascending order, and then by the "job_name" column in descending order.

This means that the employee records will be grouped first by department ID in ascending order, and within each department, the records will be ordered by job name in descending order.

Relational Algebra Expression:

Relational Algebra Tree:

Practice Online

Sample Database: employee

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Previous SQL Exercise: List the employees in ascending order of their salaries.
Next SQL Exercise: Display all the unique job in descending order.