text: CREATE TABLE users (
      id INT UNSIGNED AUTO_INCREMENT NOT NULL PRIMARY KEY,
      email VARCHAR(256) NOT NULL UNIQUE,
      name VARCHAR(32),
      created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
      updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
      deleted_at TIMESTAMP DEFAULT NULL
  );
  
  CREATE TABLE questions (
      id INT UNSIGNED AUTO_INCREMENT NOT NULL PRIMARY KEY,
      title TEXT NOT NULL,
      body TEXT NOT NULL,
      created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
      updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
      deleted_at TIMESTAMP DEFAULT NULL,
      user_id INT UNSIGNED NOT NULL,
      FOREIGN KEY (user_id) REFERENCES users(id)
  );
  
  -- 初期データ
  INSERT INTO users (email, name) VALUES ("hoge@hogehoge", "hoge");
  INSERT INTO users (email, name) VALUES ("fuga@fugafuga", "foo");
  INSERT INTO users (email, name) VALUES ("piyo@piyopiyo", "bar");
  
  INSERT INTO questions (title, body, user_id) VALUES ("How to use Git?", "What is 'git init?'", 1);
  INSERT INTO questions (title, body, user_id) VALUES ("How to use Docker?", "What is 'docker-compose?'", 2);