postgresql7.1 select to_char(to_date(:current_date, 'yyyy-mm-dd'), 'D') as day_of_the_week, to_char(next_day(to_date(:current_date, 'yyyy-mm-dd')-7, 'SUNDAY'), 'YYYY-MM-DD') as sunday_of_the_week, to_char(next_day(to_date(:current_date, 'yyyy-mm-dd')+7, 'Saturday'), 'YYYY-MM-DD') as saturday_of_the_week from dual select to_char(start_date, 'J') as start_date, to_char(start_date, 'HH24:MI') as pretty_start_date, to_char(end_date, 'HH24:MI') as pretty_end_date, coalesce(e.name, a.name) as name, e.event_id as item_id from acs_activities a, acs_events e, timespans s, time_intervals t where e.timespan_id = s.timespan_id and s.interval_id = t.interval_id and e.activity_id = a.activity_id and start_date::date between to_date(:sunday_of_the_week,'YYYY-MM-DD') and to_date(:saturday_of_the_week,'YYYY-MM-DD') and e.event_id in ( select cal_item_id from cal_items where on_which_calendar = :calendar_id )