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SQL exercises on employee Database: List the manager no and the number of employees working for those managers in ascending order on manager id

SQL employee Database: Exercise-96 with Solution

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96. Write a query in SQL to list the manager no and the number of employees working for those managers in ascending order on manager id.

Sample table: employees


Sample Solution:

SELECT w.manager_id,
       count(*)
FROM employees w,
     employees m
WHERE w.manager_id = m.emp_id
GROUP BY w.manager_id
ORDER BY w.manager_id ASC;

Sample Output:

  manager_id | count
------------+-------
      65646 |     2
      66928 |     5
      67832 |     1
      67858 |     1
      68319 |     3
      69062 |     1
(6 rows)

Practice Online


Sample Database: employee

employee database structure

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