id , coupon_id, product_id, num, create_time, update_time select from tb_coupon_product where id = #{id} select from tb_coupon_product and id = #{id} and coupon_id = #{couponId} and product_id = #{productId} and num = #{num} and create_time = #{createTime} and update_time = #{updateTime} select from tb_coupon_product where coupon_id = #{couponId} select CONCAT(tb_product.name, '*', SUM(tb_coupon_product.num)*#{num}) from tb_coupon_product LEFT JOIN tb_product ON tb_coupon_product.product_id = tb_product.id where coupon_id = #{couponId} group by tb_coupon_product.product_id insert into tb_coupon_product(coupon_id, product_id, num, create_time, update_time) values (#{couponId}, #{productId}, #{num}, #{createTime}, #{updateTime}) insert into tb_coupon_product(coupon_id, product_id, num, create_time, update_time) values (#{entity.couponId}, #{entity.productId}, #{entity.num}, #{entity.createTime}, #{entity.updateTime}) update tb_coupon_product coupon_id = #{couponId}, product_id = #{productId}, num = #{num}, create_time = #{createTime}, update_time = #{updateTime}, where id = #{id} delete from tb_coupon_product where id = #{id}