/**
* Resets the query builder to an empty state.
*
* The query type and model is not reset.
*
* @return $this
*/
public function reset()
{
parent::reset();
$this->_set = $this->_columns = $this->_values = array();
$this->_result = NULL;
// Re-register the model
$this->_register_model();
return $this;
}
