Question

我正在制作一个鸡尾酒数据库，现在我有三张桌子：

饮料有专栏drink_id和drink_name
成分具有列成分_id和成分名称
第三个是名为recipes的简单关系表，其中包含drinks_id和ingredients_id

我想用一组ingredient_ids查询数据库，并从这组成分中获取一组饮料。例如，如果饮料A含有成分（1,2），饮料B含有（1,3），饮料C含有（1,2,3），输入成分1,2和3应该返回饮料A，B和C我刚开始用MySQL教自己数据库设计，非常感谢任何帮助。对不起，如果在其他地方已经回答了这个问题，我试过但不太知道如何搜索它。

Answer 1

TRY

SELECT d.drink_name
FROM tbl_drink d
INNER JOIN tbl_receipe r ON r.drink_id=d.drink_id
INNER JOIN tbl_ingredient i ON i.ingredient_id = r.ingredient_id
WHERE `given ID` IN (i.ingredient_id)

Answer 2

select * from drink d where
  exists (select * from recipe where drink_id = d.drink_id and ingred_id = ?) and
  exists (select * from recipe where drink_id = d.drink_id and ingred_id = ?) and
  [...]

绑定?并为集合中的每个成分添加exists。

Answer 3

SELECT d.drinks_name
FROM drinks d
JOIN recipes AS r ON (r.drinks_id = d.drinks_id)
JOIN ingredients AS i1 ON (i1.ingredients_id = r.ingredients_id)
JOIN ingredients AS i2 ON (i2.ingredients_id = r.ingredients_id)
...
JOIN ingredients AS iN ON (iN.ingredients_id = r.ingredients_id)
WHERE
    i1.ingredients_name = ${first_ingredient}
    i2.ingredients_name = ${second_ingredient}
    ...
    iN.ingredients_name = ${Nth_ingredient}

MySQL多对多关系匹配

3 个答案: