多加入与在那里，喜欢和or_like 3笨的活动记录

Question

我想这一点：

 $location = 'a'; 
     $this->db->select('l.id, d.guests, l.city, l.country'); 
     $this->db->from('offers as o'); 
     $this->db->join('location as l', 'l.id = o.id', 'left'); 
     $this->db->join('desc as d', 'd.offer_id = o.id', 'left'); 
     $this->db->where('d.guests', $guests); 
     $this->db->where('o.completed', 1); 
     $this->db->where('l.country LIKE', $location.'%'); 
     $this->db->or_where('l.city LIKE', $location.'%'); 
     $this->db->limit(5); 

而且我有3位客人，并与国家阿尔巴尼亚（每桌1行吧）的报价。但是，如果$guests = 2;我有这1行的结果。同样，如果我使用like和or_like而不是where和or_where。如果我评论这一行：

$this->db->or_where('l.city LIKE', $location.'%');

一切工作正常，我如果$guests != 3和1行的结果，如果$guests = 3没有结果。

生成的查询与$this-db->last_query()是：

SELECT 'l'.'id', 'd'.'guests', 'l'.'city', 'l'.'country' FROM 'offers' as 'o' LEFT JOIN 'location' as 'l' ON 'l'.'id' = 'o'.'id' LEFT JOIN 'desc' as 'd' ON 'd'.'id' = 'o'.'id' WHERE 'd'.'guests' = 3 AND 'o'.'completed' = 1 AND 'l'.'country' LIKE 'a%' OR 'l'.'city' LIKE 'a%' LIMIT 5

我怎样才能让这个查询？ 选择已完成的值= 1，客人= $guests以及城市或国家/地区$location。

Answer 1

试试这个代码

$location = 'a'; 
$this->db->select('l.id, d.guests, l.city, l.country'); 
$this->db->from('offers as o'); 
$this->db->join('location as l', 'l.id = o.id', 'left'); 
$this->db->join('desc as d', 'd.offer_id = o.id', 'left'); 
$this->db->where('d.guests', $guests); 
$this->db->where('o.completed', 1); 
$this->db->where("(l.country LIKE '".$location."%' or l.city LIKE '".$location."%')"); 
$this->db->limit(5); 

Answer 2

您需要使用Query grouping

$location = 'a'; 
$this->db->select('l.id, d.guests, l.city, l.country'); 
$this->db->from('offers as o'); 
$this->db->join('location as l', 'l.id = o.id', 'left'); 
$this->db->join('desc as d', 'd.offer_id = o.id', 'left'); 
$this->db->where('d.guests', $guests); 
$this->db->where('o.completed', 1); 
$this->db->->group_start(); 
$this->db->where('l.country LIKE', $location.'%'); 
$this->db->or_where('l.city LIKE', $location.'%'); 
$this->db->group_end(); 
$this->db->limit(5); 

另外，还要看看like and or_like方法来避免这样的'l.country LIKE'代码。

Answer 3

试试这个

$location = 'a'; 
$this->db->select('l.id, d.guests, l.city, l.country'); 
$this->db->from('offers as o'); 
$this->db->join('location as l', 'l.id = o.id', 'left'); 
$this->db->join('desc as d', 'd.offer_id = o.id', 'left'); 
$this->db->where('d.guests', $guests); 
$this->db->where('o.completed', 1); 
$this->db->like('l.country',$location,'after'); 
$this->db->or_like('l.city',$location,'after'); 
$this->db->limit(5);