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SELECT pizzas with toppings SQL

Time:09-29

Can somebody tell me how i can display all the pizzas and their toppings without displaying the same pizza multiple times with each topping.

name name
Cajun Combo bacon crumble
Cajun Combo ham
Cajun Combo spicy pepperoni
Cajun Combo Cajun spice
Cajun Combo Fresh garlic
Cajun Combo garlic sauce topping
Bistro black pepper
Bistro cheddar cheese
Bistro chili flakes
Bistro pepperoni
Bistro red onion
BBQ King cream cheese
BBQ King jalapeno
BBQ King pepper cheese
BBQ King pepperoni
BBQ King pulled pork
BBQ King BBQ topping
Fiesta cream cheese
Fiesta Fresh garlic
Fiesta mushrooms
Fiesta oregano
Fiesta pepperoni
Fiesta pineapple
Italiana balsamic glaze
Italiana cream cheese
Italiana dates
Italiana pepperoni
Italiana semi dried tomatoes
Italiana spinach
Champion bacon crumble
Champion black pepper
Champion Fresh garlic
Champion ham
Champion jalapeno
Champion mushrooms
Champion pepperoni
Champion pineapple
Champion red onion
    CREATE TABLE toppings (
      idTopping INTEGER PRIMARY KEY,
      name text
    );
    
    CREATE TABLE pizzas (
      idPizza INTEGER PRIMARY KEY,
      name text
    );
    
    CREATE TABLE pizzasAndToppings (
      idTopping INTEGER,
      idPizza INTEGER,
      FOREIGN KEY (idTopping)
        REFERENCES toppings (idTopping),
      FOREIGN KEY (idPizza)
        REFERENCES pizzas (idPizza)
    );
    
    
    
    INSERT INTO pizzasAndToppings (idTopping, idPizza) VALUES (5, 1), (7, 1), (12, 1), (27, 1), (29, 1), (30, 1);
    
    INSERT INTO pizzasAndToppings (idTopping, idPizza) VALUES (26, 2), (1, 2), (28, 2), (9, 2), (21, 2);
    
    INSERT INTO pizzasAndToppings (idTopping, idPizza) VALUES (2, 3), (18, 3), (4, 3), (9, 3), (11, 3), (25, 3);
    
    INSERT INTO pizzasAndToppings (idTopping, idPizza) VALUES (2, 4), (29, 4), (19, 4), (31, 4), (9, 4), (20, 4);
    
    INSERT INTO pizzasAndToppings (idTopping, idPizza) VALUES (24, 5), (2, 5), (15, 5), (9, 5), (22, 5), (23, 5);
    
    INSERT INTO pizzasAndToppings (idTopping, idPizza) VALUES (5, 6), (26, 6), (29, 6), (7, 6), (18, 6), (19, 6), (9, 6), (20 ,6), (21, 6);
    
    INSERT INTO toppings (name) VALUES ('cheddar cheese'), ('cream cheese'), ('Havarti'), ('pepper cheese'),
    ('bacon crumble'), ('chicken fajitas'), ('ham'), ('minced beef'), ('pepperoni'), ('prime bacon slices'), ('pulled pork'),
    ('spicy pepperoni'), ('Vegan chicken'), ('black olives'), ('dates'), ('fresh chili'), ('green pepper'), ('jalapeno'), ('mushrooms'),
    ('pineapple'), ('red onion'), ('semi dried tomatoes'), ('spinach'), ('balsamic glaze'), ('BBQ topping'), ('black pepper'),
    ('Cajun spice'), ('chili flakes'), ('Fresh garlic'), ('garlic sauce topping'), ('oregano');
    
    INSERT INTO pizzas (name) VALUES ('Cajun Combo'), ('Bistro'), ('BBQ King'), ('Fiesta'), ('Italiana'), ('Champion');
   
/* SELECT */
    SELECT pizzas.name, toppings.name FROM pizzas INNER JOIN pizzasAndToppings ON pizzasAndToppings.idPizza = pizzas.idPizza INNER JOIN toppings ON toppings.idTopping = pizzasAndToppings.idTopping;

CodePudding user response:

You can use the group_concat aggregate function:

SELECT     pizzas.name AS pizza_name, 
           GROUP_CONCAT(toppings.name) AS toppings_names
FROM       pizzas
INNER JOIN pizzasAndToppings ON pizzasAndToppings.idPizza = pizzas.idPizza
INNER JOIN toppings ON toppings.idTopping = pizzasAndToppings.idTopping
GROUP BY   pizzas.name
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