BEGIN;
BEGIN
select
	l_returnflag,
	l_linestatus,
	sum(l_quantity) as sum_qty,
	sum(l_extendedprice) as sum_base_price,
	sum(l_extendedprice * (1 - l_discount)) as sum_disc_price,
	sum(l_extendedprice * (1 - l_discount) * (1 + l_tax)) as sum_charge,
	avg(l_quantity) as avg_qty,
	avg(l_extendedprice) as avg_price,
	avg(l_discount) as avg_disc,
	count(*) as count_order
from
	lineitem
where
	l_shipdate <= date '1998-12-01' - interval '88 days'
group by
	l_returnflag,
	l_linestatus
order by
	l_returnflag,
	l_linestatus;
 l_returnflag | l_linestatus |   sum_qty   | sum_base_price |  sum_disc_price  |    sum_charge    |     avg_qty      |    avg_price     |      avg_disc      | count_order 
--------------+--------------+-------------+----------------+------------------+------------------+------------------+------------------+--------------------+-------------
 A            | F            | 3.69192e+08 |    5.60581e+11 | 537761682264.716 | 559279132721.118 | 25.5009891830229 | 38237.1733619275 | 0.0500061064698533 |    14804136
 N            | F            | 9.85162e+06 |    1.47674e+10 | 14028880949.7688 | 14590605548.7326 | 25.5203507499417 |  38255.007913662 | 0.0499765562917861 |      386030
 N            | O            | 7.09489e+08 |    1.08439e+12 | 1059872599685.24 |  1102280675659.2 | 25.4980971529776 | 38233.8195761123 | 0.0500006590816779 |    29179960
 R            | F            | 3.69443e+08 |    5.60938e+11 | 538119745767.555 | 559644153701.354 | 25.5084340745404 |  38251.467160251 | 0.0499959341106707 |    14808323
(4 rows)

COMMIT;
COMMIT