# Find ingridents included in recipe
SELECT ingredient.designation AS Ingredient FROM RecipeContainsIngredients WHERE recipe.name = 'Tomato Basil Salad';

# get Ingredients where carbohydrates are lower than 40
SELECT designation FROM Ingredient WHERE carbohydrates <= 40;

# find user that ingredients
SELECT order.customer.first_name AS Name FROM OrderContainsIngredients WHERE ingredient.designation = 'Schalotte';

# Get total amount spend by each customer
SELECT string::concat(customer.first_name, ' ',  customer.last_name) as customer, math::sum(invoice_amount) AS total_spent
FROM Order
GROUP BY customer;

# Total number of deliver cost per supplyer

SELECT supplier.name AS supplier, math::sum(delivery_cost) AS total_delivery_cost
FROM SupplierContainsIngredients
GROUP BY supplier;




# Stock low warning
DEFINE EVENT ingredient_stock_low ON TABLE Ingredient
WHEN $after.stock < 10 THEN (
    CREATE alert SET message = "Stock for ingredient " || $after.designation || " is low.",
        ingredient_id = $value.id,
        created_at = time::now()
);