Andrey fastfood))

dumps/students/s_02/fast.sql

@@ -0,0 +1,50 @@
+DROP TABLE IF EXISTS staff CASCADE;
+DROP TABLE IF EXISTS role CASCADE;
+DROP TABLE IF EXISTS staff_role CASCADE;
+DROP TABLE IF EXISTS menu CASCADE;
+DROP TABLE IF EXISTS products CASCADE;
+DROP TABLE IF EXISTS menu_products CASCADE;
+
+CREATE TABLE staff(
+    id               SERIAL PRIMARY KEY,
+    first_name       VARCHAR(50) NOT NULL,
+    last_name        VARCHAR(50) NOT NULL,
+    staff_name       VARCHAR(20) NOT NULL,
+    born_year        SMALLINT NOT NULL CONSTRAINT positive_age CHECK (born_year > 0)
+);
+
+CREATE TABLE role(
+   id               SERIAL PRIMARY KEY,
+   role_name        VARCHAR(50) NOT NULL,
+   description      TEXT
+);
+
+CREATE TABLE staff_role(
+    id              SERIAL PRIMARY KEY,
+    staff_id        INT REFERENCES staff (id),
+    role_id         INT REFERENCES role (id)
+);
+
+CREATE TABLE menu(
+   id               SERIAL PRIMARY KEY,
+   name             VARCHAR(50) NOT NULL,
+   code             SMALLINT NOT NULL CONSTRAINT positive_code CHECK (code > 0),
+   price            SMALLINT NOT NULL CONSTRAINT positive_price CHECK (price > 0),
+   portion          VARCHAR(10) NOT NULL
+);
+
+CREATE TABLE products(
+   id               SERIAL PRIMARY KEY,
+   name             VARCHAR(50) NOT NULL,
+   code             VARCHAR(3) NOT NULL,
+   weight           SMALLINT NOT NULL CONSTRAINT positive_weight CHECK (weight > 0),
+   price            SMALLINT NOT NULL CONSTRAINT positive_price CHECK (price > 0),
+   country          VARCHAR(50) NOT NULL,
+   expires_at       TIMESTAMP WITH TIME ZONE
+);
+
+CREATE TABLE menu_products(
+   id               SERIAL PRIMARY KEY,
+   menu_id          INT REFERENCES menu (id),
+   products_id      INT REFERENCES products (id)
+);