diff --git a/Top-Travellers.txt b/Top-Travellers.txt
new file mode 100644
index 0000000..f9d10ab
--- /dev/null
+++ b/Top-Travellers.txt
@@ -0,0 +1,2 @@
+select u.name, IFNULL(sum(r.distance),0) as travelled_distance from users u 
+LEFT JOIN rides r ON u.id = r.user_id GROUP BY r.user_id ORDER BY travelled_distance DESC, u.name;
diff --git a/apples_and_oranges.txt b/apples_and_oranges.txt
new file mode 100644
index 0000000..8a860d6
--- /dev/null
+++ b/apples_and_oranges.txt
@@ -0,0 +1,2 @@
+with apple as (select sale_date, sold_num from sales where fruit = 'apples'), orange as (select sale_date, sold_num from sales where fruit = 'oranges')
+select a.sale_date, (a.sold_num - o.sold_num) as diff from apple a join orange o on o.sale_date = a.sale_date;