Mysql 列一对多关系的三个条件

有两种表产品，颜色 在产品和颜色之间存在一对多关系

产品表： 身份证、头衔、描述

颜色表： 标识、产品标识、颜色名称

现在我想做一个查询，选择颜色表中全部（例如）有三种颜色（“红色”、“绿色”、“棕色”）的产品

一种方法是：

select c.product_id
from colors c
where c.color_name in ('red', 'green', 'brown')
group by c.product_id
having count(distinct color_name) = 3;

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如果要从

colors

表中选择所有颜色，请尝试以下查询

它将选择所有颜色，并且不限于3种颜色

SELECT c.product_id
FROM colors c
WHERE c.color_name IN (SELECT DISTINCT color_name FROM colors)
GROUP BY c.product_id
HAVING COUNT(DISTINCT color_name) = (SELECT COUNT(DISTINCT color_name) FROM colors);

如果您需要获取产品的标题和说明，则：

SELECT * FROM products WHERE id in (
SELECT c.product_id
FROM colors c
WHERE c.color_name IN (SELECT DISTINCT color_name FROM colors)
GROUP BY c.product_id
HAVING COUNT(DISTINCT color_name) = (SELECT COUNT(DISTINCT color_name) FROM colors));

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拥有是前进的道路

SELECT p.id, p.title, p.description
FROM products p
INNER JOIN colors c ON p.id = c.product_id
GROUP BY p.id, p.title, p.description
HAVING COUNT(DISTINCT c.id) = 3

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请不要犹豫，告诉我们你到目前为止尝试了什么