题解 | 用户订单信息查询
用户订单信息查询
https://www.nowcoder.com/practice/dccec8456d774169925c0d50843ea076
SELECT T1.city,T1.total_order_amount FROM ( SELECT C.customer_id,C.city,SUM(O.total_amount) AS total_order_amount FROM orders AS O LEFT JOIN customers AS C ON C.customer_id=O.customer_id GROUP BY C.customer_id,C.city ORDER BY total_order_amount DESC ,C.city ASC ) T1;
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