category_product --------------- id_category id_product product --------------- id_product id_manufacturer manufacturer --------------- id_manufacturer name
我将如何创建一个SQL查询,以便当id_category等于某个值时从制造商中选择所有名称?
这是表的直接内部连接:
SELECT m.name, cp.id_category FROM manufacturer as m INNER JOIN product as p ON m.id_manufacturer = p.id_manufacturer INNER JOIN category_product as cp ON p.id_product = cp.id_product WHERE cp.id_category = 'some value'