Update the value of a field in database by 1 using codeigniter

Question

I want to implement a SQL statement using codeigniter active record.

UPDATE tags SET usage = usage+1 WHERE tag=\"java\";

How can I implemen

Answer 1

I find its sometimes simpler to just write the SQL rather than having Active Record build it for me.

$sql = 'update tags set usage=usage+1 where tag=?';
$this->db->query($sql, array($tag));