protected function dealDeleteSQL($t,$w){
        $this->delete($t);
        $this->delete .= $this->BindWhere($w);
        return $this->delete;
    }
protected function dealDeleteSQL($t,$w){
        $this->delete($t);
        $this->delete .= $this->BindWhere($w);
        return $this->delete;
    }
protected function dealDeleteSQL ( $ t , $ w ) { $ this -> delete ( $ t ) ; $ this -> delete .= $ this -> BindWhere ( $ w ) ; return $ this -> delete ; }
deal delete sql function
deal delete sql function