check style

        <result column="user_id" property="userId" jdbcType="INTEGER"/>

        <result column="status" property="status" jdbcType="VARCHAR"/>

    </resultMap>

    <update id="createTableIfNotExists">

        CREATE TABLE IF NOT EXISTS t_order (order_id BIGINT AUTO_INCREMENT, user_id INT NOT NULL, status VARCHAR(50), PRIMARY KEY (order_id));

    </update>