diff --git a/sql-queries-5/String Concatenation and Aggregation in SQL/aggregating by department.sql b/sql-queries-5/String Concatenation and Aggregation in SQL/aggregating by department.sql
new file mode 100644
index 00000000..fb91346c
--- /dev/null
+++ b/sql-queries-5/String Concatenation and Aggregation in SQL/aggregating by department.sql	
@@ -0,0 +1 @@
+USE University; SELECT d.name AS department_name, STRING_AGG(s.name, ', ') AS student_names FROM Student s JOIN Course c ON s.id = c.department_id JOIN Department d ON c.department_id = d.id GROUP BY d.name;