Provide the ingredients that are rationed in the recipe with the highest carbohydrate content.
the highest carbohydrate content refers to MAX(carbo)
SELECT T1.name FROM Ingredient AS T1 INNER JOIN Quantity AS T2 ON T1.ingredient_id = T2.ingredient_id INNER JOIN Nutrition AS T3 ON T3.recipe_id = T2.recipe_id WHERE T2.max_qty = T2.min_qty ORDER BY T3.carbo DESC LIMIT 1
CREATE TABLE Ingredient
(
    ingredient_id INTEGER
            primary key,
    category      TEXT,
    name          TEXT,
    plural        TEXT
);
CREATE TABLE Recipe
(
    recipe_id  INTEGER
            primary key,
    title      TEXT,
    subtitle   TEXT,
    servings   INTEGER,
    yield_unit TEXT,
    prep_min   INTEGER,
    cook_min   INTEGER,
    stnd_min   INTEGER,
    source     TEXT,
    intro      TEXT,
    directions TEXT
);
CREATE TABLE Nutrition
(
    recipe_id     INTEGER
            primary key,
    protein       REAL,
    carbo         REAL,
    alcohol       REAL,
    total_fat     REAL,
    sat_fat       REAL,
    cholestrl     REAL,
    sodium        REAL,
    iron          REAL,
    vitamin_c     REAL,
    vitamin_a     REAL,
    fiber         REAL,
    pcnt_cal_carb REAL,
    pcnt_cal_fat  REAL,
    pcnt_cal_prot REAL,
    calories      REAL,
    foreign key (recipe_id) references Recipe(recipe_id)
);
CREATE TABLE Quantity
(
    quantity_id   INTEGER
            primary key,
    recipe_id     INTEGER,
    ingredient_id INTEGER,
    max_qty       REAL,
    min_qty       REAL,
    unit          TEXT,
    preparation   TEXT,
    optional      TEXT,
    foreign key (recipe_id) references Recipe(recipe_id),
    foreign key (ingredient_id) references Ingredient(ingredient_id),
    foreign key (recipe_id) references Nutrition(recipe_id)
);
