Sql 如何将查询与子查询联接？

所以我完全是一个新手，试图解决这个问题，我必须找到所有标记为素食但成分中含有火鸡肉的菜肴

这就是我尝试过的（这是我连接3个表以查找成分的地方）：

这就是我似乎无法加入子查询以识别素食者标记的地方：

WHERE Ingredients.Name = 'Turkey meat' =
(SELECT Name
FROM Tags
INNER JOIN DishesTags ON DishesTags.TagID = Tags.ID
INNER JOIN Dishes ON DishesTags.DishID = Dishes.ID)

数据库的示意图如下所示，以供参考：

---

您可以使用

exists

和子查询：

select d.*
from dishes d
where
    exists (
        select 1 
        from dishestags dt
        innerjoin tags t on t.id = dt.tagid
        where dt.dishid = d.id and t.name = 'Vegetarian'
    )
    and exists (
        select 1 
        from dishesingredients di
        inner join ingredients i on i.id = di.ingredientid
        where di.dishid = d.id and i.name = 'Turkey'
    )

---

让我们先看看有多少菜的配料是火鸡肉

你有：

SELECT D.ID
FROM
Dishes D 
JOIN DishIngredients DI ON D.ID = DI.DishID
JOIN Ingredients I ON DI.IngredientID = I.ID
WHERE I.Name LIKE 'Turkey meat'

然后买所有标有“素食者”标签的菜

SELECT D.ID
FROM
Dishes D 
JOIN DishIngredients DI ON D.ID = DI.DishID
JOIN Ingredients I ON DI.IngredientID = I.ID
JOIN DishesTags DT on D.ID = DT.DishID
JOIN Tags T ON DT.TagID = T.ID

WHERE I.Name LIKE 'Turkey meat'
AND T.Name = 'Vegetarian'

SELECT D.ID
FROM
Dishes D 
JOIN DishIngredients DI ON D.ID = DI.DishID
JOIN Ingredients I ON DI.IngredientID = I.ID
JOIN DishesTags DT on D.ID = DT.DishID
JOIN Tags T ON DT.TagID = T.ID

WHERE I.Name LIKE 'Turkey meat'
AND T.Name = 'Vegetarian'