select to_char(start_date, :date_format) as start_date, to_char(end_date, :date_format) as end_date, nvl(e.name,a.name) as name, nvl(e.description, a.description) as description, recurrence_id, item_type_id from acs_activities a, acs_events e, timespans s, time_intervals t, cal_items where e.timespan_id = s.timespan_id and s.interval_id = t.interval_id and e.activity_id = a.activity_id and e.event_id = :cal_item_id and cal_items.cal_item_id = :cal_item_id