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Completed MockSQL #58

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7 changes: 7 additions & 0 deletions Problem1.sql
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# Write your MySQL query statement below
SELECT u.name AS 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
ORDER BY travelled_distance DESC, name ASC;
5 changes: 5 additions & 0 deletions Problem2.sql
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# Write your MySQL query statement below
WITH CTE AS (SELECT sale_date, sold_num FROM Sales WHERE fruit = 'apples' ORDER BY sale_date),
CTE1 AS (SELECT sale_date, sold_num FROM Sales WHERE fruit = 'oranges' ORDER BY sale_date)

SELECT t.sale_date, t.sold_num - (SELECT t1.sold_num FROM CTE1 t1 WHERE t.sale_date = t1.sale_date) AS DIFF FROM CTE t;