-- Use INSERT to add a record.
INSERT INTO
    enclosures (biome, name, area)
VALUES (
        'Arktida',
        'Ledové království',
        2500
    );

SELECT * FROM enclosures;

INSERT INTO
    enclosures (name, area, biome)
VALUES (
        'Savanvoá pláň',
        1700,
        'Savana'
    ),
    (
        'Křišťálová laguna',
        900,
        'Tropické vody'
    ),
    (
        'Zelený divoký les',
        750,
        'Mírný les'
    );

-- Increase every enclosure area by 100 square meters.
UPDATE enclosures SET area = area + 100;

SELECT * FROM enclosures;

-- Increase smaller enclosure areas by 50 square meters.

UPDATE enclosures SET area = area + 50 WHERE area < 1500;

-- Update multiple columns in one statement.
UPDATE enclosures SET biome = 'Oceán', area = area + 25 WHERE id = 3;

-- Delete a selected record.

DELETE FROM enclosures WHERE id = 3;

SELECT * FROM enclosures;

INSERT INTO
    animals (name, adoption_date, note)
VALUES (
        'hroch',
        '2026-10-25',
        'hrošík Igor'
    );

INSERT INTO
    animals (name, adoption_date, note)
VALUES ('vlk', NOW(), 'pozor kouše');

INSERT INTO
    animals (name, adoption_date, note)
VALUES ('vlk', NOW(), 'pozor kouše');

SELECT * FROM animals;

SELECT * FROM animals_keepers;