diff --git a/schema.sql b/schema.sql
index fb0a83c..0284aff 100644
--- a/schema.sql
+++ b/schema.sql
@@ -1014,3 +1014,4 @@ insert into Orders (CustomerID, OrderDate, ProductID, Quantity) values (1000, '2
 -- Write query to create the index that you will create to optimize a query like
 -- SELECT * FROM Orders WHERE CustomerID = {abc} AND OrderDate > '{abc}';
 
+create index customer_idx on Orders(CustomerID);