MySql - 创建表如果不存在那么截断？

CREATE TABLE IF NOT EXISTS table_name (
  id INT(11) NOT NULL AUTO_INCREMENT,
  name VARCHAR(30) NOT NULL,
  PRIMARY KEY (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

IF EXISTS (SELECT * FROM table_name) THEN
  TRUNCATE TABLE table_name;
END IF;