protected function parseSelectStmt(){
		$cols = $this->stmt->getColumns();
		list($source, $where, $group, $order) = $this->clauses;
		foreach($cols as $key => $col){
			$col = preg_match('~^[\w.]+$~', $col) ? ":$col" : $col;
			$cols[$key] = $this->tryDelimite($col);
		}
		$cols = implode(', ', $cols);

		return $this->applyLimit("SELECT $cols\nFROM " . $source . $where . $group . $order);
	}