sql:
		SELECT
		 m_pref_id
		,m_pref_code
		,m_pref_name AS m_pref_full_name
		,m_area_id
		,m_area_name
		,m_area_code
		FROM
		 m_pref
		 LEFT JOIN m_area
		   ON m_pref_area_id = m_area_id
		WHERE
		 m_pref_code = 'tokyo'
		<Br>Connection was killed