How to join two tables from different databases using codeigniter? - php

Question

How to make this query join two tables from different databases?. I already have configured database.php in CodeIgniter with the two databases.
$active_group = 'default';
$query_builder = TRUE;
$db['default'] = array(
'dsn' => '',
'hostname' => 'localhost',
'username' => '******',
'password' => '******',
'database' => '******',
'dbdriver' => 'mysqli',
'dbprefix' => '',
'pconnect' => FALSE,
'db_debug' => (ENVIRONMENT !== 'production'),
'cache_on' => FALSE,
'cachedir' => '',
'char_set' => 'utf8',
'dbcollat' => 'utf8_general_ci',
'swap_pre' => '',
'encrypt' => FALSE,
'compress' => FALSE,
'stricton' => FALSE,
'failover' => array(),
'save_queries' => TRUE
);
$db['simak'] = array(
'dsn' => '',
'hostname' => '103.124.44.13',
'username' => '******',
'password' => '******',
'database' => '******',
'dbdriver' => 'mysqli',
'port' => 21,
'dbprefix' => '',
'pconnect' => FALSE,
'db_debug' => (ENVIRONMENT !== 'production'),
'cache_on' => FALSE,
'cachedir' => '',
'char_set' => 'utf8',
'dbcollat' => 'utf8_general_ci',
'swap_pre' => '',
'encrypt' => FALSE,
'compress' => FALSE,
'stricton' => FALSE,
'failover' => array(),
'save_queries' => TRUE
);
My model
function __construct() {
$this->db_simak = $this->load->database('simak', true);
}
private function List() {
$this->db->select('a.*, b.nama_diklat, c.kode_ese');
$this->db->from('kis_diklats a');
$this->db_simak->join('md_diklat b', 'a.id_diklat = b.id_diklat', 'left');
$this->db_simak->join('m_unor c', 'a.kode_ese = c.kode_ese', 'left');
if ($this->session->userdata('level') != 1) {
$this->db->where('a.dihapus_oleh', NULL);
}
Error notice
A Database Error Occurred
Error Number: 1054
Unknown column 'b.nama_diklat' in 'field list'
SELECT a.*, b.nama_diklat, c.kode_ese FROM kis_diklats a ORDER BY diinput_tgl DESC LIMIT 10