通过计数子查询内的匹配数量来订购查询

Question

我正在计算子查询内匹配的数量以排序结果。

查询我想：

SELECT recipes.*, (SELECT COUNT(ingredient_id) FROM recipes WHERE ingredient_id IN(1,3))   AS ingredient_matches 
FROM recipes 
INNER JOIN ingredients 
ON recipes.id = ingredients.recipe_id 
INNER JOIN ingredients_available 
ON ingredients.ingredient_id = ingredients_available.id 
GROUP BY recipes.id 
ORDER BY ingredient_matches DESC; 

数据库结构：

recipes: 
id, name 
ingredients: 
id, recipe_id, ingredient_id 
ingredients_available: 
id, name 
tags: 
id, recipe_id, tag_id 
tags_available: 
id, name 

以下作品中的查询，但我希望能有不匹配的访问成份，所以我可以说，他们需要他们如果这是有道理的？

SELECT recipes.*, COUNT(ingredients.id) AS ingredient_matches 
FROM recipes 
INNER JOIN ingredients 
ON recipes.id = ingredients.recipe_id 
INNER JOIN ingredients_available 
ON ingredients.ingredient_id = ingredients_available.id 
WHERE ingredient_id IN (1, 5) 
GROUP BY recipes.id 
ORDER BY ingredient_matches DESC; 

Answer 1

http://sqlfiddle.com/#!2/3f9ef/15

当时所期望的结果。这是因为我没有确定子查询中的recipes_id = ingredients.recipe_id。

Answer 2

是否低于工作？：

SELECT recipes.*, COUNT(ingredients.id) AS ingredient_matches 
FROM recipes 
INNER JOIN ingredients 
ON recipes.id = ingredients.recipe_id 
LEFT JOIN ingredients_available 
ON ingredients.ingredient_id = ingredients_available.id 
WHERE ingredient_id IN (1, 5) 
GROUP BY recipes.id 
ORDER BY ingredient_matches DESC;