mysql - 如何从两个表中获取记录以及计数？

Question

我想从表 orderitems 中选择购买最多的商品，然后获取这些商品的详细信息并按 DESC 排序

我有以下返 repo 买次数最多的商品，但我不知道如何返回 p_name p_price 和 p_image_path products 表中的每个项目(p_id)

SELECT      p_id
        ,   COUNT( p_id ) AS p_id_count
FROM        orderitem
GROUP BY    p_id
ORDER BY    p_id_count $direction

我希望这是有道理的

Answer 1

SELECT o.p_id, COUNT( o.p_id ) AS p_id_count, p.p_name, p.p_price, p.p_image_path
FROM orderitem o
INNER JOIN products p ON o.p_id = p.p_id
GROUP BY o.p_id
ORDER BY p_id_count