Question

我有这个查询在phpMyAdmin

中有效

SELECT *, 
    ( 6371 * acos ( cos ( radians(21.161908) ) 
    * cos( radians( `latitude` ) ) 
    * cos( radians( `longitude` ) - radians(-86.85152790000001) ) 
    + sin ( radians(21.161908) ) 
    * sin( radians( `latitude` ) ) ) ) AS distance 
FROM _results 
HAVING distance < 30 
ORDER BY distance 
LIMIT 0 , 20

我尝试在CodeIgniter中执行此操作：

$this->select("* , ( 6371 * acos ( cos ( radians(21.161908) ) * cos( radians(latitude) ) * cos( radians( longitude ) - radians(-86.85152790000001) ) + sin ( radians(21.161908) ) * sin( radians( latitude ) ) ) ) AS distance ");
$this->db->having('distance < 30');
$this->db->order_by('distance');
$this->db->limit(20,0);

但是有了这个，我得到了这个错误：

错误号码：1064 您的SQL语法错误...用户附近＆＃39; *，（6371 * acos（cos（弧度（21.161908））* cos（弧度（纬度））

任何人都有这个错误的想法吗？

注意：之前我意识到之前的查询。

Answer 1

为什么不尝试这样

$this->db->query("SELECT *, 
    ( 6371 * acos ( cos ( radians(21.161908) ) 
    * cos( radians( `latitude` ) ) 
    * cos( radians( `longitude` ) - radians(-86.85152790000001) ) 
    + sin ( radians(21.161908) ) 
    * sin( radians( `latitude` ) ) ) ) AS distance 
FROM _results 
HAVING distance < 30 
ORDER BY distance 
LIMIT 0 , 20");

Answer 2

您应该使用$this->db->select()代替$this->select()。

我有类似这样的类型查询

$this->db->select("*, ( 3959 * acos( cos( radians($lat) ) * cos( radians( lat ) ) * cos( radians( lng ) - radians($lng) ) + sin( radians($lat) ) * sin( radians( lat ) ) ) ) AS distance");                         
$this->db->having('distance <= ' . $miles);                     
$this->db->order_by('distance');                    
$this->db->limit(20, 0);

工作正常。

Answer 3

对我来说完美无缺。

$this->db->select("SELECT *,ACOS( SIN( RADIANS( `latitude` ) ) * SIN( RADIANS( $Lat ) ) + COS( RADIANS( `latitude` ) )* COS( RADIANS( $Lat )) * COS( RADIANS( `longitude` ) - RADIANS( $Long )) ) * 6380 AS `distance`");
            $this->db->from('_results');
            $this->db->where("ACOS( SIN( RADIANS( `latitude` ) ) * SIN( RADIANS( $fLat ) ) + COS( RADIANS( `latitude` ) )* COS( RADIANS( $fLat )) * COS( RADIANS( `longitude` ) - RADIANS( $fLon )) ) * 6380 < 5");
            $this->db->orderby('distance');
            $this->db->limit(20,0);
            return $this->db->get()->result();

Answer 4

 function lat_long($lat,$long){
  
 $query = $this->db->query("SELECT *, ( 6371 * acos ( cos ( radians($lat) ) * cos( radians( `latitude` ) ) * cos( radians( `longitude` ) - radians($long) ) + sin ( radians($lat) ) * sin( radians( `latitude` ) ) ) ) AS distance FROM table HAVING distance < 30 ORDER BY distance LIMIT 0 , 20");     
 return $query->result();

  }

CodeIgniter错误1064：纬度和经度查询

4 个答案: