BEGIN;
BEGIN
EXPLAIN
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 '99 days'
group by
	l_returnflag,
	l_linestatus
order by
	l_returnflag,
	l_linestatus;
                                              QUERY PLAN                                               
-------------------------------------------------------------------------------------------------------
 Finalize GroupAggregate  (cost=2327587.04..2327588.99 rows=6 width=236)
   Group Key: l_returnflag, l_linestatus
   ->  Gather Merge  (cost=2327587.04..2327588.44 rows=12 width=236)
         Workers Planned: 2
         ->  Sort  (cost=2326587.02..2326587.03 rows=6 width=236)
               Sort Key: l_returnflag, l_linestatus
               ->  Partial HashAggregate  (cost=2326586.80..2326586.94 rows=6 width=236)
                     Group Key: l_returnflag, l_linestatus
                     ->  Parallel Seq Scan on lineitem  (cost=0.00..1467295.96 rows=24551167 width=25)
                           Filter: (l_shipdate <= '1998-08-24 00:00:00'::timestamp without time zone)
(10 rows)

COMMIT;
COMMIT