mysql 复制表数据到原表

INSERT into t_product (product_name,type_id,type_little_id,price,price_old,abstract_title,imagePath,imagePath2,imagePath3,imagePath4,inventory,content,rating,ratingNum,sellNum,state,create_date,unit)  SELECT product_name,type_id,type_little_id,price,price_old,abstract_title,imagePath,imagePath2,imagePath3,imagePath4,inventory,content,rating,ratingNum,sellNum,state,create_date,unit  FROM t_product