/** * Adds "AND ON . * .." conditions for the last created JOIN statement. * * @param mixed $c1 * column name or array($column, $alias) or object * @param string $op * logic operator * @param mixed $c2 * column name or array($column, $alias) or object * * @return $this */ public function and_on($c1, $op, $c2) { $this->_last_join->and_on($c1, $op, $c2); return $this; }