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

Question

Hello all

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

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

How can I implement this using Codeigniter active records?

Regards

Answer 1

$this->db->set('usage', 'usage+1', FALSE)
$this->db->where('tag', 'java');
$this->db->update('tags');

Answer 2

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));