如何在codeigniter中编写联合？ [复制]

Question

select ID,Name_of_Movie as Name_of_Moviee 
from moviestable 
UNION 
select ID,New_Name 
from moviestable

我在 codeigniter 中需要这个查询..

Answer 1

UNION有两种方式，下面是第一种

$data['values']=$this->db->query(
'select ID,Name_of_Movie as Name_of_Moviee from moviestable       
 UNION  
select ID,New_Name from moviestable')->get()->result_array();

UNION 的第二种方式

$this->db->select("ID,Name_of_Movie as Name_of_Moviee");
$this->db->from("moviestable");
$query1 = $this->db->get_compiled_select(); // It resets the query just like a get()

$this->db->select("ID,New_Name");
$this->db->distinct();
$this->db->from("moviestable");
$query2 = $this->db->get_compiled_select(); 

$data['values'] = $this->db->query($query1." UNION ".$query2)->result();

您正在为您的查询实现任何一个