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) > 314
	)
	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=10413117.28..10413120.03 rows=100 width=39) (actual time=126472.804..126473.098 rows=85 loops=1)
   Buffers: shared hit=1108168 read=1335017 written=123
   ->  GroupAggregate  (cost=10413117.28..11246159.60 rows=30292448 width=39) (actual time=126472.801..126473.086 rows=85 loops=1)
         Buffers: shared hit=1108168 read=1335017 written=123
         ->  Sort  (cost=10413117.28..10488848.40 rows=30292448 width=39) (actual time=126472.784..126472.836 rows=595 loops=1)
               Sort Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
               Sort Method: quicksort  Memory: 71kB
               Buffers: shared hit=1108168 read=1335017 written=123
               ->  Hash Join  (cost=3078468.18..5820598.81 rows=30292448 width=39) (actual time=89217.072..126469.661 rows=595 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1108154 read=1335017 written=123
                     ->  Seq Scan on lineitem  (cost=0.00..1681894.95 rows=60584895 width=8) (actual time=0.058..22912.079 rows=60044176 loops=1)
                           Buffers: shared hit=297312 read=778734 written=123
                     ->  Hash  (cost=2983780.93..2983780.93 rows=7574980 width=39) (actual time=89064.120..89064.120 rows=85 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 6kB
                           Buffers: shared hit=810842 read=556283
                           ->  Hash Join  (cost=2195215.40..2983780.93 rows=7574980 width=39) (actual time=79983.902..89063.541 rows=85 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=810842 read=556283
                                 ->  Hash Join  (cost=2126187.40..2763253.33 rows=7574980 width=20) (actual time=78208.302..87281.646 rows=85 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=775564 read=556283
                                       ->  Seq Scan on orders  (cost=0.00..407300.59 rows=15149959 width=16) (actual time=0.015..4321.834 rows=15015000 loops=1)
                                             Buffers: shared hit=238011 read=17790
                                       ->  Hash  (cost=2075698.84..2075698.84 rows=4039085 width=4) (actual time=78061.685..78061.685 rows=85 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 3kB
                                             Buffers: shared hit=537553 read=538493
                                             ->  HashAggregate  (cost=1984819.43..2035307.99 rows=4039085 width=8) (actual time=69978.982..78061.027 rows=85 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 314::double precision)
                                                   Rows Removed by Filter: 15014915
                                                   Buffers: shared hit=537553 read=538493
                                                   ->  Seq Scan on lineitem  (cost=0.00..1681894.95 rows=60584895 width=8) (actual time=0.056..22279.398 rows=60044176 loops=1)
                                                         Buffers: shared hit=537553 read=538493
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1773.401..1773.401 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=35278
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.032..946.966 rows=1500000 loops=1)
                                             Buffers: shared hit=35278
 Total runtime: 126638.379 ms
(39 rows)

COMMIT;
COMMIT