text: USE sample_db;
  
  DROP TABLE IF EXISTS item;
  
  CREATE TABLE item
  (
    item_id SERIAL PRIMARY KEY,
    name VARCHAR(50),
    price INT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
  );
  
  INSERT INTO item (name, price) VALUES ('apple', 100);
  INSERT INTO item (name, price) VALUES ('orange', 200);