id order_id goods_id price 1 11701245001 1001 10 2 11701245001 1002 20 3 11701245002 1001 10问题:
SELECT i.order_id, SUM(i.price) FROM test_order_item i group by i.`order_id` order by i.order_id desc;
SELECT order_id, price FROM test_order_item group by order_id and sum(price) order by order_id desc;
SELECT order_id, SUM(price) FROM test_order_item group by order_id order by order_id desc;
SELECT order_id, SUM(price) FROM test_order_item group by order_id order by order_id ASC;