oracle8.1.6 select to_char(start_date, 'YYYY-MM-DD HH24:MI:SS') as ansi_start_date, to_char(end_date, 'YYYY-MM-DD HH24:MI:SS') as ansi_end_date, nvl(e.name, a.name) as name, nvl(e.status_summary, a.status_summary) as status_summary, e.event_id as item_id, (select type from cal_item_types where item_type_id= ci.item_type_id) as item_type, cals.calendar_id, cals.calendar_name $additional_select_clause from acs_activities a, acs_events e, timespans s, time_intervals t, cal_items ci, calendars cals where e.timespan_id = s.timespan_id and s.interval_id = t.interval_id and e.activity_id = a.activity_id and start_date between $interval_limitation_clause and ci.cal_item_id = e.event_id and cals.calendar_id = ci.on_which_calendar and e.event_id = ci.cal_item_id $additional_limitations_clause $calendars_clause $order_by_clause select to_char(to_date(:current_date, 'yyyy-mm-dd'), 'Day, DD Month YYYY') as day_of_the_week, to_char((to_date(:current_date, 'yyyy-mm-dd') - 1), 'yyyy-mm-dd') as yesterday, to_char((to_date(:current_date, 'yyyy-mm-dd') + 1), 'yyyy-mm-dd') as tomorrow from dual to_date(:current_date,'YYYY-MM-DD') and (to_date(:current_date,'YYYY-MM-DD') + (24 - 1/3600)/24) to_date(:first_weekday_of_the_week_tz, 'YYYY-MM-DD HH24:MI:SS') and to_date(:last_weekday_of_the_week_tz, 'YYYY-MM-DD HH24:MI:SS') to_date(:first_date_of_month_system,'YYYY-MM-DD HH24:MI:SS') and to_date(:last_date_in_month_system, 'YYYY-MM-DD HH24:MI:SS') to_date(:start_date,'YYYY-MM-DD HH24:MI:SS') and to_date(:end_date, 'YYYY-MM-DD HH24:MI:SS')