我无法显示来自具有不同记录的两个不同表中的所有数据

Question

For information in using codeigniter

I have two tables:

1. table A has 4 records picture 1
2. table B has 5 records picutre 2

I want to show that records from 2 tables I have above to my view but in my view, it just shows 4 records.

1. 4 records from table A
2. 4 records from table B

Even though in table B has 5 records it just shows 4 records

This is my code :

Model

function getAlldata(){
   $this->db->select('*');
   $this->db->from('data_skm_organisasi'); 
   $this->db- >JOIN('data_skm_kejuaraan','data_skm_kejuaraan.id=data_skm_organisasi.id');
   $results = $this->db->get();     
   return $results->result();
}   

controller

public function V_home()
{
   $dataSimpanOrganisasi = array();
   $dataSimpanOrganisasi ['organisasi']= $this->M_main->getAlldata(); ;
   $this->load->view('V_mahasiswa',$dataSimpanOrganisasi);
} 

view

<?php foreach ($organisasi as $dataSimpan) { ?>
     <div>
          <?php echo $dataSimpan->Lembaga; ?>
          <?php echo $dataSimpan->tingkatan_O; ?><br><br>
     </div>
          <?php } 
?><br><br>

<?php foreach ($organisasi as $dataSimpan) { ?>
      <div>
          <?php echo $dataSimpan->jenisKegiatan; ?>
          <?php echo $dataSimpan->tingkatan; ?><br><br>
      </div>
          <?php } 
?>

what should I do to my code? is there is any problem in my code?

Answer 1

You are using an normal $db->join command, which is an inner join. This is why you only see the rows of table B, when there is a corredsponding row in table A. In your case, it seems you need an outer join, not an inner join. you can specify it by adding a parameter to your join statement:

$this->db->join('data_skm_kejuaraan', 'data_skm_kejuaraan.id=data_skm_organisasi.id', 'right outer');

Answer 2

I think you used the wrong column to join on the data_skm_kejuaraan table. Try change :

$this->db->JOIN('data_skm_kejuaraan','data_skm_kejuaraan.id=data_skm_organisasi.id');

to

$this->db->JOIN('data_skm_kejuaraan','data_skm_kejuaraan.id_juara=data_skm_organisasi.id');