Horde_Db_Adapter::supportsCountDistinct PHP 메소드

    public function supportsCountDistinct();

 /**
  * Does this adapter support using DISTINCT within COUNT?  This is +true+
  * for all adapters except sqlite.
  *
  * @return boolean
  */
 public function supportsCountDistinct()
 {
     return $this->_read->supportsCountDistinct();
 }