MySQL：如何按最终顺序获取产品的成分数量

Question

Here is my database:

I have problem with query, that probably is classic issue in ecommerce.

I have product that have ingredients, I am selling ingredients of products but what users are adding to cart are products. so ie 10 products they add to cart, but in cart summary I need to display to them how much ingredients they are buying to create that products.

ie. people are buying ingredients to create 5 bottles of coca cola and 5 bottles of Sprite, and that is what they are adding to cart, system needs to calculate how much total sugar, water, cocacola_ingredient, sprite_ingredient need to be used produce those 5 bottles of coca cola and 5 bottles of sprite

i have table orderhasproducts that keeps info how much bottle of coca cola and sprite user ordered

and I have table producthasingredients keeping info about how much particular ingredient are in particular product

what i need to do is calculate total number of all ingredients for all products in particular order.

that is my last query, that still doesnt work:

SELECT ingredients.name, 

(SELECT SUM(producthasingredients.quantity * product.quantity / 100 * orderhasproducts.numofproducts) 
        FROM producthasingredients INNER JOIN product ON product.id= producthasingredients.id_product 
        WHERE ingredients.id=producthasingredients.id_ingredient )AS totalIngredient

FROM ingredients 

INNER JOIN producthasingredients ON ingredients.id = producthasingredients.id_ingredient 
INNER JOIN product ON producthasingredients.id_product=product.id
INNER JOIN orderhasproducts ON product.id=orderhasproducts.id_product 
WHERE orderhasproducts.id_order=15 
ORDER BY ingredients.id

here are some more example info:

producthasingredients.id_ingredient = 200;
producthasingredients.quantity = 10;
producthasingredients.id_product =100    

product.id=100    
product.quantity = 5;

orderhasproducts.id_product = 100;
orderhasproducts.numofproducts = 5

That means that product 100 has 5 Liters and has 10% of ingredient 200. In order we have 5 products (id 100)

More sample data:

lets say we have 2 products in database cocacola and sprite cocacola ingredients are: sugar (10%), water(80%), cocacolaingredient(10%) and bottle has 1 Liter.

sprite ingredients are: sugar (20%), water(70%), spritegredient(10%) and bottle has 1 Liter.

user place order: 10 bottles of cola, 10 bottles of sprite query should produce (in yellow): please check that image

UPDATE

following query:

        SELECT ingredients.name AS ingredientName, 
ingredients.id AS ingredientId, 
product.id AS productId, product.name AS productName,

        (producthasingredients.quantity * product.quantity / 100) AS ingredientQuantity

FROM ingredients 

INNER JOIN producthasingredients ON ingredients.id = producthasingredients.id_ingredient 
INNER JOIN product ON product.id=producthasingredients.id_product 
INNER JOIN orderhasproducts WHERE id_order=16

gives me output

ingredientName                ingredientId  productId  productName        iQuant  
----------------------------  ------------  ---------  -----------------  ------
proszek do drewna                        1          4  płyn do drewna     3.00          
proszek do podłóg                        2          3  płyn do podłóg     2.50         
proszek do szyb                          3          2  płyn do szyb       1.00          
składnik uniwersalny                     4          1  płyn do naczyń     2.00          
składnik uniwersalny                     4          2  płyn do szyb       1.00          
składnik uniwersalny                     4          3  płyn do podłóg     1.00          
proszek do płynu do naczyń               5          1  płyn do naczyń     1.00          
składnik uniwersalny 2                   6          4  płyn do drewna     1.00          
składnik uniwersalny 3                   7          1  płyn do naczyń     0.50          
składnik uniwersalny 3                   7          2  płyn do szyb       0.50        

now what I need to do is to sum ingredients with the same ID

Answer 1

This should give you the total for each ingredient. I added a division by 1 to convert to decimal beforehand or you'll lose info when dividing by 100:

SELECT distinct ingredients.name, 

(SELECT SUM((producthasingredients.quantity/1.0) * (product.quantity/1.0) / 100 * orderhasproducts.numofproducts)
        FROM producthasingredients INNER JOIN product ON product.id= producthasingredients.id_product 
        WHERE ingredients.id=producthasingredients.id_ingredient )AS totalIngredient

FROM ingredients 

INNER JOIN producthasingredients ON ingredients.id = producthasingredients.id_ingredient 
INNER JOIN product ON producthasingredients.id_product=product.id
INNER JOIN orderhasproducts ON product.id=orderhasproducts.id_product 
WHERE orderhasproducts.id_order=15
ORDER BY ingredients.id;

Answer 2

try this

    SELECT result.name,SUM(result.totalIngredient) FROM 
(SELECT distinct ingredients.name, (SELECT SUM((producthasingredients.quantity/1.0) * (product.quantity/1.0) / 100 * orderhasproducts.numofproducts) FROM producthasingredients INNER JOIN product ON product.id= producthasingredients.id_product WHERE ingredients.id=producthasingredients.id_ingredient )AS totalIngredient FROM ingredients INNER JOIN producthasingredients ON ingredients.id = producthasingredients.id_ingredient INNER JOIN product ON producthasingredients.id_product=product.id INNER JOIN orderhasproducts ON product.id=orderhasproducts.id_product WHERE orderhasproducts.id_order=1 ORDER BY ingredients.id) as result 
GROUP BY name