...cleaner. Thanks for your help!
select to_date(depart_date,'yyyymmdd') as "Departure Date",
decode(out_code,0,0,1) "out_code",
count(*) "Trips"
from departure_table
where depart_date >= to_char(sysdate-10, 'yyyymmdd')
group by depart_date, decode(out_code,0,0,1)
order by...