I would like to do something like this:
select sum(nvl(total_time_out, 0)),
sum(nvl((case when day_of_week = 'Mon' then total_time_out else 0 end) over (partition by person_id), 0))
from xxpay_tna_summary_v
where person_id = 7926
where the second column only returns the sum of the total time out hours for the Monday. Is this possible in Oracle SQL, and what is the correct syntax?