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database.sql
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database.sql
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CREATE database cafe
DROP TABLE menu_purchase
-- create tables
CREATE table menu (
id serial PRIMARY KEY,
item text NOT NULL,
price numeric(4,2) NOT NULL,
img text NOT NULL,
course text NOT NULL
);
-- DROP TABLE menu_purchase
-- DROP TABLE purchase
CREATE table purchase (
id serial PRIMARY KEY,
name text NOT NULL,
telephone text NOT NULL,
created_at TIMESTAMP NOT NULL
);
CREATE table menu_purchase (
id serial PRIMARY KEY,
quantity numeric default 0,
menu_id smallint,
purchase_id smallint,
FOREIGN KEY (menu_id) REFERENCES menu (id),
FOREIGN KEY (purchase_id) REFERENCES purchase (id)
);
-- insert items into menu table
INSERT INTO menu (item, price, img, course) VALUES ('Mixed Salad', 6, 'mixed-salad.jpg', 'starter');
INSERT INTO menu (item, price, img, course) VALUES ('Fried Chicken', 7, 'fried-chicken.jpg', 'starter');
INSERT INTO menu (item, price, img, course) VALUES ('Vegetable soup', 5, 'vegetable-soup.jpg', 'starter');
INSERT INTO menu (item, price, img, course) VALUES ('Beef stew', 9, 'beef-stew.jpg', 'main');
INSERT INTO menu (item, price, img, course) VALUES ('Fish & chips', 11, 'fish-chips.jpg', 'main');
INSERT INTO menu (item, price, img, course) VALUES ('Pork chops & vegetables', 9, 'pork-and-veg.jpg', 'main');
INSERT INTO menu (item, price, img, course) VALUES ('Chocolate cake', 4, 'chocolate-cake.jpg', 'dessert');
INSERT INTO menu (item, price, img, course) VALUES ('Blueberry cheesecake', 3.50, 'blueberry-cheesecake.jpg', 'dessert');
INSERT INTO menu (item, price, img, course) VALUES ('Trifle', 3, 'trifle.jpg', 'dessert');
-- update for any changes
-- UPDATE menu SET item = 'Pork chops & vegetables', price = 10, img = 'pork-and-veg.jpg' WHERE id = 6
-- alter columns for any changes
-- ALTER TABLE purchase DROP COLUMN time;
-- ALTER TABLE purchase ADD COLUMN time TIMESTAMP NOT NULL;