How would I use ON DUPLICATE KEY UPDATE in my CodeIgniter model?

Question

I have a CodeIgniter/PHP Model and I want to insert some data into the database.

However, I have this set in my \'raw\' SQL query:

ON DUPLICATE KEY U         


        

Answer 1

Using $this->db->query() and parameters, this is how I do it. the first 4 parameters are for the insert part and the last three parameters are repeated for the on duplicate key update part.

$sql = "insert into application_committee ".
       "(application_id, member1_id, member2_id, member3_id) values (?, ?, ?, ?)".
       " on duplicate key update member1_id = ?, member2_id = ?, member3_id = ?";

$this->db->query($sql, array($appid, $member_1, $member_2, $member_3, 
                 $member_1, $member_2, $member_3);