MockSQL1 Submitted

Problem1.sql

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+WITH CTE AS (
+    SELECT 
+        u.id,
+        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 u.id, u.name
+)
+SELECT name, travelled_distance
+FROM CTE
+ORDER BY travelled_distance DESC, name;

Problem2.sql

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+Select a.sale_date, a.sold_num - b.sold_num as diff
+from sales a, sales b
+where a.fruit IN ('apples') and b.fruit in ('oranges')
+and a.sale_date = b.sale_date
+group by a.sale_date
+order by a.sale_date