Объединение и создание БД. Выводит empty в двух созданных таблицах

CREATE TABLE kindergartens (
    id INT PRIMARY KEY,
    name VARCHAR(50),
    district VARCHAR(50),
    ownership_type VARCHAR(50),
    year_opened INT,
    phone VARCHAR(20)
);
 
CREATE TABLE children (
    id INT PRIMARY KEY,
    name VARCHAR(50),
    group_type VARCHAR(50),
    birth_date DATE,
    kindergarten_id INT,
    FOREIGN KEY (kindergarten_id) REFERENCES kindergartens(id)
);
 
CREATE TABLE companies (
    id INT PRIMARY KEY,
    name VARCHAR(50),
    ownership_form VARCHAR(50),
    phone VARCHAR(20),
    start_year INT,
    employee_count INT
);
 
-- Таблиця допомоги дитячим садкам
CREATE TABLE kindergarten_help (
    id INT PRIMARY KEY,
    help_type VARCHAR(50),
    cost DECIMAL(10,2),
    help_date DATE,
    kindergarten_id INT,
    company_id INT,
    FOREIGN KEY (kindergarten_id) REFERENCES kindergartens(id),
    FOREIGN KEY (company_id) REFERENCES companies(id)
);
 
CREATE TABLE child_help (
    id INT PRIMARY KEY,
    help_type VARCHAR(50),
    cost DECIMAL(10,2),
    help_date DATE,
    child_id INT,
    company_id INT,
    FOREIGN KEY (child_id) REFERENCES children(id),
    FOREIGN KEY (company_id) REFERENCES companies(id)
);
 
SELECT *
FROM kindergartens
JOIN children
ON kindergartens.id = children.kindergarten_id;
 
SELECT *
FROM kindergarten_help
JOIN kindergartens
ON kindergartens.id = kindergarten_help.kindergarten_id
JOIN companies
ON companies.id = kindergarten_help.company_id;
 
INSERT INTO kindergartens VALUES
    (1, 'Садик №1', 'DFS', 'sda', 1980, '+380441234567');
 
INSERT INTO children VALUES
    (1, 'Марина', 'dsa', '2018-01-01', 1);
 
INSERT INTO companies VALUES
    (1, 'ПАТ "asd"', 'asd', '+380442345600', 1995, 500);
 
INSERT INTO kindergarten_help VALUES
    (1, 'asd', 5000, '2022-01-20', 1, 2);
 
INSERT INTO child_help VALUES
    (1, 'asd', 3000, '2021-12-10');