Inner join query in codeigniter - php

Question

code:
public function draft_post($idd)
{
$this->db->select('*');
$this->db->from('registration');
$this->db->join('draft_registration', 'registration.user_id= draft_registration.user_id','INNER');
$this->db->where('registration.user_id', $idd);
$query = $this->db->get();
$result = $query->result_array();
return $result;
}
In this codes, I have two table i.e. registration and draft_registration. Now, What am I doing here I want to run inner join in Codeigniter. Now, What happening when I hit this query on phpmyadmin it shows wrong data i.e. I have two rows in draft_registration and one row in registration table but it always shows two table which is wrong and my query looks like when I was print as mention below:
SELECT *
FROM `registration`
INNER JOIN `draft_registration` ON `registration`.`user_id`= `draft_registration`.`user_id`
WHERE `registration`.`user_id` = '20181121064044'
So, How can I resolve this issue? Please help me.
Thank You

Answer 1

$this->db->select('*'); //This code get all rows from both table.If you want a particular row you mention the column name.
For example:
$this->db->select('registration.name,draft_registration.city,draft_registration.state');

Answer 2

Specify column that you want to select. Or if you want select all column of your table, you can use :
SELECT registration.* with backticks `` on column name

Answer 3

Use the Below Code
public function draft_post($idd)
{
$this->db->select('registration.*,draft_registration.*');
$this->db->from('registration');
$this->db->join('draft_registration', 'registration.user_id= draft_registration.user_id');
$this->db->where('registration.user_id', $idd);
$query = $this->db->get();
$result = $query->result_array();
return $result;
}
Or you can use with objects
public function draft_post($idd)
{
$this->db->select('a.*,b.*');
$this->db->from('registration a');
$this->db->join('draft_registration b', 'a.user_id= b.user_id');
$this->db->where('a.user_id', $idd);
$query = $this->db->get();
$result = $query->result_array();
return $result;
}