kerangka kerja zend bergabung dengan 3 tabel

Itu sangat sulit. SQL yang benar:

USE lyf;
SELECT
  *
FROM
  `order` AS o
  LEFT JOIN order_item AS oi ON oi.order_id = o.id
  RIGHT JOIN product AS p ON oi.product_id = p.id
WHERE
  IF(o.`date` IS NOT NULL, MONTH(o.`date`) = MONTH(NOW()), 1) = 1