codeigniter 内部连接没有按预期工作答案

【问题标题】：codeigniter inner join not working as expectedcodeigniter 内部连接没有按预期工作
【发布时间】：2016-03-15 15:47:22
【问题描述】：

我有一个如下内连接查询，

SELECT * FROM shop_offer so INNER JOIN shop s ON s.shop_id = so.shop_id INNER JOIN city c ON c.city_id = s.city_id INNER JOIN locality l ON l.locality_id = s.locality_id INNER JOIN category ca ON ca.category_id = s.category_id WHERE so.offer_discount >= 10 AND so.publish = 1

在 phpmyadmin 中执行上述查询时，结果如预期只显示一行。

但是当我在 codeigniter 中尝试这个查询时，结果显示 3 行。我的codeigniter代码是，

        $this->db->select('*');
        $this->db->from('shop_offer as so');
        $this->db->join('shop as s', 's.shop_id = so.shop_id');
        $this->db->join('city as c', 'c.city_id = s.city_id');
        $this->db->join('locality as l', 'l.locality_id = s.locality_id');
        $this->db->join('category as ca', 'ca.category_id = s.category_id');
        $this->db->where(array('so.offer_discount >=' => 10, 'so.publish' => 1));
        $query = $this->db->get();

codeigniter 代码有什么问题。我是codeigniter的新手。有什么办法可以解决这个错误。

【问题讨论】：

标签： php mysql codeigniter join

【解决方案1】：

您也可以尝试像这样运行查询，

$this->db->query("SELECT * FROM shop_offer so 
    INNER JOIN shop s ON s.shop_id = so.shop_id 
    INNER JOIN city c ON c.city_id = s.city_id 
    INNER JOIN locality l ON l.locality_id = s.locality_id 
    INNER JOIN category ca ON ca.category_id = s.category_id 
    WHERE so.offer_discount >= 10 AND so.publish = 1");

【讨论】：