select i.id,i.investigation_date, i.is_first,i.is_safety_check,i.project_id,i.record_data,i.location, i.del_flag,i.create_by,i.create_time,i.update_by,i.update_time,i.remark from ass_investigation i select count(1) from ass_investigation where project_id=#{projectId} and del_flag=0 where project_id=#{projectId} and del_flag=0 order by create_time desc where id=#{investigationId}