sql: select sum(cnt) as m_minfo_diary_count from ( SELECT count(t_diary.t_diary_id) as cnt FROM t_diary inner join m_staff on m_staff_id = t_diary_staff_id INNER JOIN m_mall ON m_mall_id = m_staff_mall_id INNER JOIN m_mall_info ON m_minfo_mall_id = m_mall_id LEFT JOIN m_mall_ext1 ON m_mall_id = m_mall_ext1_id WHERE m_staff_mall_id = 34255 AND m_staff_pc_disp = 1 GROUP BY m_staff_id ) aaa
MySQL server has gone away