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 '87 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            | 3.69543e+08 |    5.61098e+11 | 538296162674.931 | 559834182166.661 | 25.5004711162834 |  38236.564085323 | 0.0500048026672956 |    14819059
 N            | F            |  9.8639e+06 |    1.47855e+10 | 14046088225.9509 | 14608451192.7808 |  25.522143219383 |  38256.800606815 | 0.0499750313736572 |      386484
 N            | O            | 7.10548e+08 |    1.08606e+12 | 1061543101612.18 | 1104017162508.56 | 25.4975218581982 | 38233.2631452045 | 0.0499993465474955 |    29226334
 R            | F            |  3.6979e+08 |    5.61473e+11 | 538657026107.785 | 560202991189.369 | 25.5086826449308 | 38252.1764981464 | 0.0499959509121833 |    14822845
(4 rows)

COMMIT;
COMMIT