Error with Join and Active Record

[eluser]Unknown[/eluser]
Hello

I'm trying to follow documentation for creating a join (http://ellislab.com/codeigniter/user-gui...ecord.html)

The doc says :

Code:

$this->db->select('*');
$this->db->from('blogs');
$this->db->join('comments', 'comments.id = blogs.id');
$query = $this->db->get();

so I have tried :

Code:

$this->db->select('marker_id, marker_name, taxon.scientific_name');
$this->db->from('marker');
$this->db->join('taxon', 'marker.taxon_id = taxon.taxon_id');
$query = $this->db->get();

but I'm facing an error :

Error Number:

SELECT "marker_id", "marker_name", "taxon"."scientific_name" FROM "marker" JOIN "taxon" ON "marker"."taxon_id" = "taxon"."taxon_id"

I should miss something, and I need your help

Thank you.

(Oracle database 11.2.0.1.0, CI 2.1.0)

Fred