Union Get Method

The union_get method for getting result from Union Query Builder.

Basic Usage

Here is the basic usage union_get method from $db property on SENE_Model class.

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$this->db->union_get([bool $is_debug = 0]]): mixed

Parameters

This method has 1 optional parameters.

$is_debug

The $is_debug parameter is a marker (flag) to enable debug mode. The value of this parameter can be filled with int 1 to enable debug mode and display the query to be processed. Fill it with another value to not enable debug mode. In debug mode, there will be no query execution process to the database system.

Example

Here is the example for union_get in a model class.

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<?php
class Blog_Model extends SENE_Model{
  var $tbl = 'd_blog';
  var $tbl_as = 'b';

  public function __construct(){
    parent::__construct();
    $this->db->from($this->tbl,$this->tbl_as);
  }
  public function searchByScore($keyword){
    $this->db->union_flush();

    //1st union
    $this->db->select('id');
    $this->db->select('title');
    $this->db->select('excerpt');
    $this->db->select('date_modified');
    $this->db->select_as("3",'score');
    $this->db->from($this->tbl,$this->tbl_as);
    $this->db->where('title',$keyword,'or','like',1,0);
    $this->db->where('excerpt',$keyword,'or','like',0,1);
    $this->db->union_create();

    //2nd union
    $this->db->select('id');
    $this->db->select('title');
    $this->db->select('excerpt');
    $this->db->select('date_modified');
    $this->db->select_as("2",'score');
    $this->db->from($this->tbl,$this->tbl_as);
    $this->db->where('title',$keyword,'or','like%',1,0);
    $this->db->where('excerpt',$keyword,'or','like%',0,1);
    $this->db->union_create();

    //2nd union
    $this->db->select('id');
    $this->db->select('title');
    $this->db->select('excerpt');
    $this->db->select('date_modified');
    $this->db->select_as("1",'score');
    $this->db->from($this->tbl,$this->tbl_as);
    $this->db->where('title',$keyword,'or','%like',1,0);
    $this->db->where('excerpt',$keyword,'or','%like',0,1);
    $this->db->union_create();

    //3nd union
    $this->db->select('id');
    $this->db->select('title');
    $this->db->select('excerpt');
    $this->db->select('date_modified');
    $this->db->select_as("0",'score');
    $this->db->from($this->tbl,$this->tbl_as);
    $this->db->where('title',$keyword,'or','%like%',1,0);
    $this->db->where('excerpt',$keyword,'or','%like%',0,1);
    $this->db->union_create();

    $this->db->union_select('id,title,date_modified,score','score');
    $this->db->union_group_by('id');
    $this->db->union_order_by('score','desc')->union_limit(1, 14);
    return $this->db->union_get();
  }
}