diff --git a/database/easy/the_number_of_employees_which_report_to_each_employee.sql b/database/easy/the_number_of_employees_which_report_to_each_employee.sql
new file mode 100644
index 0000000..ca2ba82
--- /dev/null
+++ b/database/easy/the_number_of_employees_which_report_to_each_employee.sql
@@ -0,0 +1,11 @@
+-- https://leetcode.com/problems/the-number-of-employees-which-report-to-each-employee/
+-- PostgreSQL
+
+SELECT e1.employee_id,
+       e1.name,
+       COUNT(e2.employee_id) AS reports_count,
+       ROUND(AVG(e2.age))    AS average_age
+FROM employees e1
+         JOIN employees e2 ON e1.employee_id = e2.reports_to
+GROUP BY e1.employee_id, e1.name
+ORDER BY e1.employee_id;