oracle8.1.6 and sysdate-o.confirmed_date <= 1 and sysdate-o.confirmed_date <= 7 and months_between(sysdate,o.confirmed_date) <= 1 and 1=1 select o.order_id, o.confirmed_date, o.order_state, ec_total_price(o.order_id) as price_to_display, o.user_id, u.first_names, u.last_name, count(*) as n_items from ec_orders o, ec_items i, cc_users u where o.order_id=i.order_id and o.user_id(+)=u.user_id $confirmed_query_bit $order_state_query_bit group by o.order_id, o.confirmed_date, o.order_state, ec_total_price(o.order_id), o.user_id, u.first_names, u.last_name order by $order_by_clause