text: CREATE TABLE customer (
        id          INT NOT NULL PRIMARY KEY IDENTITY(1,1),
        country     VARCHAR(2) NOT NULL,
        first_name  VARCHAR(50) NOT NULL,
        last_name   VARCHAR(50) NOT NULL,
        email       VARCHAR(200) NOT NULL,
        created_at  DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
        updated_at  DATETIME
  );
  
  CREATE INDEX customer_country ON customer(country);
  CREATE UNIQUE INDEX customer_email ON customer(email);
  
  INSERT INTO customer VALUES ('US', 'John', 'Doe', 'john.doe@example.com', CURRENT_TIMESTAMP, CURRENT_TIMESTAMP);
  