postgresql7.1 select to_char(to_date(:start_date, 'YYYY-MM-DD'), 'D') as day_of_the_week, to_char(next_day(to_date(:start_date, 'YYYY-MM-DD')- '1 week'::interval, :first_us_weekday), 'YYYY-MM-DD') as first_weekday_of_the_week, to_char(next_day(to_date(:start_date, 'YYYY-MM-DD'), :last_us_weekday), 'YYYY-MM-DD') as last_weekday_of_the_week from dual , extract(dow from start_date) as day_of_week select to_char(to_date(:start_date, 'YYYY-MM-DD'), 'D') as day_of_the_week, cast(next_day(to_date(:start_date, 'YYYY-MM-DD') - cast('7 days' as interval), :first_us_weekday) as date) as first_weekday_date, to_char(next_day(to_date(:start_date, 'YYYY-MM-DD') - cast('7 days' as interval), :first_us_weekday),'J') as first_weekday_julian, cast(next_day(to_date(:start_date, 'YYYY-MM-DD') - cast('7 days' as interval), :first_us_weekday) + cast('6 days' as interval) as date) as last_weekday_date, to_char(next_day(to_date(:start_date, 'YYYY-MM-DD') - cast('7 days' as interval), :first_us_weekday) + cast('6 days' as interval),'J') as last_weekday_julian, cast(:start_date::timestamptz - cast('7 days' as interval) as date) as last_week, to_char(:start_date::timestamptz - cast('7 days' as interval), 'Month DD, YYYY') as last_week_pretty, cast(:start_date::timestamptz + cast('7 days' as interval) as date) as next_week, to_char(:start_date::timestamptz + cast('7 days' as interval), 'Month DD, YYYY') as next_week_pretty from dual