php - CakePHP 和 GROUP BY

Question

使用 CakePHP 1.2，我正在尝试生成一个 GROUP BY 查询:

SELECT `categories`.*, COUNT(`entities`.id)
FROM `categories` 
LEFT JOIN `entities` ON (`categories`.`id` = `entities`.`category_id`)
GROUP BY `categories`.`id`

我会/应该怎么做？如果有帮助，我将使用“可包含”。

Answer 1

这就是我最终得到的:

 $options = array(
                    'conditions' => $conditions,
                    'fields'=>array('Category.*','COUNT(`Entity`.`id`) as `entity_count`'),
                    'joins' => array('LEFT JOIN `entities` AS Entity ON `Entity`.`category_id` = `Category`.`id`'),
                    'group' => '`Category`.`id`',
                    'contain' => array('Domain' => array('fields' => array('title')))
                );

                return $this->find('all', $options);