SQL獲取數據，從加入並獲得結果作爲assosiative陣列

Question

TABLE WORKSHOPS 
-------------------------------- 
id|course_id|country_id|city_id| 
-------------------------------- 
1 | 5  | 1  | 2 | 
-------------------------------- 
2 | 5  | 1  | 4 | 
-------------------------------- 
3 | 5  | 2  | 5 | 
-------------------------------- 

TABLE WORKSHOP_DATES 
---------------------------------------- 
id|start_date | end_date | workshop_id | 
---------------------------------------- 
1 |2014-11-05 |2014-11-06|  1  | 
---------------------------------------- 
2 |2014-11-28 |2014-11-29|  1  | 
---------------------------------------- 
3 |2014-11-28 |2014-11-30|  1  | 
---------------------------------------- 

我使用下面的查詢

$this->db->select("$this->_table.*, $_courses_table.name as course, $_countries_table.name as country, $_cities_table.name as city, $_workshop_dates_table.id as workshop_dates_id, $_workshop_dates_table.start_date as start_date, $_workshop_dates_table.end_date as end_date"); 


    $this->db->join("$_courses_table", "$_courses_table.id = $this->_table.ktw_course_id"); 
    $this->db->join("$_countries_table", "$_countries_table.id = $this->_table.ktw_country_id"); 
    $this->db->join("$_cities_table", "$_cities_table.id = $this->_table.ktw_city_id"); 
    $this->db->join("$_workshop_dates_table", "$_workshop_dates_table.ktw_workshop_id = $this->_table.id");   
    $this->db->where('ktw_course_id', $course_id); 

    $this->db->group_by("$_workshop_dates_table.ktw_workshop_id"); 
    $this->db->order_by('start_date', 'ASC'); 

    return $this->db->get($this->_table); 

但結果是：

Array 
(
    [0] => stdClass Object 
     (
      [id] => 7 
      [price] => 1300 
      [discount] => 13 
      [early_bird_date] => 2014-12-30 
      [timing] => 
      [batch] => 
      [slug] => 
      [status] => 1 
      [ktw_course_id] => 5 
      [ktw_country_id] => 2 
      [ktw_city_id] => 5 
      [ktw_timeslot_id] => 0 
      [ktw_training_mode_id] => 3 
      [ktw_currency_id] => 6 
      [created] => 
      [modified] => 
      [course] => jquery 
      [country] => kuwait 
      [city] => dubai 
      [workshop_dates_id] => 7 
      [start_date] => 2014-11-04 
      [end_date] => 2015-01-05 
     ) 

    [1] => stdClass Object 
     (
      [id] => 5 
      [price] => 900 
      [discount] => 13 
      [early_bird_date] => 2014-11-26 
      [timing] => 
      [batch] => 
      [slug] => 
      [status] => 0 
      [ktw_course_id] => 5 
      [ktw_country_id] => 1 
      [ktw_city_id] => 2 
      [ktw_timeslot_id] => 0 
      [ktw_training_mode_id] => 1 
      [ktw_currency_id] => 1 
      [created] => 
      [modified] => 2014-11-14 14:34:29 
      [course] => jquery 
      [country] => india 
      [city] => vizag 
      [workshop_dates_id] => 2 
      [start_date] => 2014-11-28 
      [end_date] => 2014-11-29 
     ) 

但我需要這樣（所有workshop_date S有來在數組中的特定workshop_id）

array(

    [0] => stdClass Object 
     (
      [id] => 6 
      [price] => 1300 
      [discount] => 13 
      [early_bird_date] => 2014-12-30 
      [timing] => 
      [batch] => 
      [slug] => 
      [status] => 0 
      [ktw_course_id] => 5 
      [ktw_country_id] => 1 
      [ktw_city_id] => 4 
      [ktw_timeslot_id] => 0 
      [ktw_training_mode_id] => 2 
      [ktw_currency_id] => 1 
      [created] => 
      [modified] => 2014-11-25 10:16:58 
      [course] => jquery 
      [country] => india 
      [city] => hyderabad 

      [workshop_dates] => array ([0] 

            [start_date] => 2014-12-30 
            [end_date] => 2014-12-31 

           [1] 
            [start_date] => 2014-11-28 
            [end_date] => 2014-12-29 
           [2] 
            [start_date] => 2014-11-28 
            [end_date] => 2014-12-30 
           ) 

) 

我想它作爲關聯數組，一個當然可以有多個車間，同時它可以有多個日期

Answer 1

，你必須使用2查詢此

先拿到工作車間和基礎上，生產車間也得到workshop_dates

然後使用的foreach你可以做一個關聯數組。