72 lines
1.2 KiB
MySQL
72 lines
1.2 KiB
MySQL
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DROP TABLE pet;
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DROP TABLE person;
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DROP TABLE person_pet;
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-- ex2.sql
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CREATE TABLE person (
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id INTEGER PRIMARY KEY,
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first_name TEXT,
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last_name TEXT,
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age INTEGER
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);
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CREATE TABLE pet (
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id INTEGER PRIMARY KEY,
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name TEXT,
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breed TEXT,
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age INTEGER,
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dead INTEGER
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);
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CREATE TABLE person_pet (
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person_id INTEGER,
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pet_id INTEGER
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);
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-- ex3.sql
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INSERT INTO person (id, first_name, last_name, age)
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VALUES (0, "Zed", "Shaw", 37);
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INSERT INTO pet (id, name, breed, age, dead)
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VALUES (0, "Fluffy", "Unicorn", 1000, 0);
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INSERT INTO pet VALUES (1, "Gigantor", "Robot", 1, 1);
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-- ex4.sql
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INSERT INTO person_pet (person_id, pet_id) VALUES (0, 0);
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INSERT INTO person_pet VALUES (0, 1);
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-- ex5.sql
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SELECT * FROM person;
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SELECT name, age FROM pet;
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SELECT name, age FROM pet WHERE dead = 0;
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SELECT * FROM person WHERE first_name != "Zed";
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-- ex6.sql
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SELECT pet.id, pet.name, pet.age, pet.dead
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FROM pet, person_pet, person
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WHERE
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pet.id = person_pet.pet_id AND
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person_pet.person_id = person.id AND
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person.first_name = "Zed";
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-- ex7.sql
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SELECT name, age FROM pet WHERE dead = 1;
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DELETE FROM pet WHERE dead = 1;
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SELECT * FROM pet;
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INSERT INTO pet VALUES (1, "Gigantor", "Robot", 1, 0);
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SELECT * FROM pet;
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