从连接表中选择all和avg

Question

请帮助您查询下面描述的情况：

1 TABLE: shops:    id | name | is_locked   |
2 TABLE: products: id | name | price       | shop_id 
3 TABLE: rates:    id | rate | is_accepted | shop_id

我有3张桌子，里面有商店，商店的产品和价格。现在我想对所有属于未锁定商店的产品进行分类，并按平均接受的商店价格订购。这个查询应该怎么样？

Answer 1

你可以试试这个：

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