get_results no result back

I can't get a result back from this query...any suggestion?

function per_match(){
   global $wpdb;
   $myrows = $wpdb->get_results( "SELECT id FROM partite;");

foreach ($myrows as $myrow) {
   echo $myrow->id;
   }
}

add_action('get_sidebar', 'per_match');

via Chebli Mohamed