BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	c_name,
	c_custkey,
	o_orderkey,
	o_orderdate,
	o_totalprice,
	sum(l_quantity)
from
	customer,
	orders,
	lineitem
where
	o_orderkey in (
		select
			l_orderkey
		from
			lineitem
		group by
			l_orderkey having
				sum(l_quantity) > 315
	)
	and c_custkey = o_custkey
	and o_orderkey = l_orderkey
group by
	c_name,
	c_custkey,
	o_orderkey,
	o_orderdate,
	o_totalprice
order by
	o_totalprice desc,
	o_orderdate
LIMIT 100;
                                                                                   QUERY PLAN                                                                                   
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=10423470.04..10423472.79 rows=100 width=39) (actual time=132990.514..132990.949 rows=75 loops=1)
   Buffers: shared hit=1322419 read=1123167 written=7
   ->  GroupAggregate  (cost=10423470.04..11257343.79 rows=30322682 width=39) (actual time=132990.510..132990.929 rows=75 loops=1)
         Buffers: shared hit=1322419 read=1123167 written=7
         ->  Sort  (cost=10423470.04..10499276.74 rows=30322682 width=39) (actual time=132990.479..132990.552 rows=525 loops=1)
               Sort Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
               Sort Method: quicksort  Memory: 66kB
               Buffers: shared hit=1322419 read=1123167 written=7
               ->  Hash Join  (cost=3081282.86..5826150.41 rows=30322682 width=39) (actual time=95363.103..132986.434 rows=525 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1322405 read=1123167 written=7
                     ->  Seq Scan on lineitem  (cost=0.00..1683573.65 rows=60645365 width=8) (actual time=0.049..22701.262 rows=60044872 loops=1)
                           Buffers: shared hit=494831 read=582289 written=1
                     ->  Hash  (cost=2986501.96..2986501.96 rows=7582472 width=39) (actual time=95065.377..95065.377 rows=75 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 6kB
                           Buffers: shared hit=827574 read=540878 written=6
                           ->  Hash Join  (cost=2197196.45..2986501.96 rows=7582472 width=39) (actual time=84451.151..95064.931 rows=75 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=827574 read=540878 written=6
                                 ->  Hash Join  (cost=2128168.45..2765824.52 rows=7582472 width=20) (actual time=82362.683..92969.634 rows=75 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=806272 read=526902 written=6
                                       ->  Seq Scan on orders  (cost=0.00..407703.43 rows=15164943 width=16) (actual time=0.027..5184.438 rows=15015000 loops=1)
                                             Buffers: shared hit=255985 read=69
                                       ->  Hash  (cost=2077679.89..2077679.89 rows=4039085 width=4) (actual time=82252.472..82252.472 rows=75 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 3kB
                                             Buffers: shared hit=550287 read=526833 written=6
                                             ->  HashAggregate  (cost=1986800.48..2037289.04 rows=4039085 width=8) (actual time=73965.057..82251.882 rows=75 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 315::double precision)
                                                   Rows Removed by Filter: 15014925
                                                   Buffers: shared hit=550287 read=526833 written=6
                                                   ->  Seq Scan on lineitem  (cost=0.00..1683573.65 rows=60645365 width=8) (actual time=0.023..23573.229 rows=60044872 loops=1)
                                                         Buffers: shared hit=550287 read=526833 written=6
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=2086.392..2086.392 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=21302 read=13976
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.026..1212.345 rows=1500000 loops=1)
                                             Buffers: shared hit=21302 read=13976
 Total runtime: 133183.649 ms
(39 rows)

COMMIT;
COMMIT