How to CONCAT data with existing data in MySql using codeigniter?

Question

I want to concat a single field with a variable in Mysql using codeigniter.

$this->db->set('my_field', 'my_field'.'My_variable', FALSE);
$this->db->where('my_other_field', 'test');
$this->db->update('my_table');

Answer 1

You cannot use . as concatenation for mysql you need to use CONCAT function

$this->db->set('my_field', "CONCAT(my_field,' ','".$your_variable."')", FALSE);