Completed MockSQL

Problem1_TopTravellers.sql

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+# Write your MySQL query statement below
+
+select distinct name,coalesce(sum(r.distance) over (partition by u.id),0) as travelled_distance
+from users u 
+left join rides r on u.id=r.user_id
+order by travelled_distance desc, name;

Problem2_ApplesOranges.sql

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+# Write your MySQL query statement below
+with cte as (
+select sale_date,
+case when fruit = 'apples' then sold_num else 0 end as 'apples_sold',
+case when fruit = 'oranges' then sold_num else 0 end as 'oranges_sold'
+from sales
+)
+
+select sale_date,sum(apples_sold)-sum(oranges_sold) as diff
+from cte
+group by sale_date;