Update iqsql.md

Author: thecoddiwompler

iqsql.md

@@ -2,18 +2,19 @@
 2. Average Salary: Departments VS Company
 3. Child - Parent - Grandparent Hierarchy
 4. Clocked Hours
-5. Department Top 3 Salary
-6. Employees Check-in Details
-7. Employees Hiring [Difficult]
-8. Employees Log [Extra Difficult]
-9. Final Destination
-10. Find Cumulative Salary of an Employee
-11. Highest-Grossing Items
-12. Increasing Sales Revenue
-13. Last Person to Fit in the Bus
-14. Manager with at least 5 direct reportees
-15. Mismatched IDs
-16. Odd and Even Measurements
-17. Onboarded Cities
-18. Qualifying Criteria
-19. Travel Analytics
+5. Company Structure [Extra Difficult]
+6. Department Top 3 Salary
+7. Employees Check-in Details
+8. Employees Hiring [Difficult]
+9. Employees Log [Extra Difficult]
+10. Final Destination
+11. Find Cumulative Salary of an Employee
+12. Highest-Grossing Items
+13. Increasing Sales Revenue
+14. Last Person to Fit in the Bus
+15. Manager with at least 5 direct reportees
+16. Mismatched IDs
+17. Odd and Even Measurements
+18. Onboarded Cities
+19. Qualifying Criteria
+20. Travel Analytics