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=10243181.14..10243183.89 rows=100 width=39) (actual time=78058.159..78058.426 rows=85 loops=1)
   Buffers: shared hit=1510509 read=932091 written=2689
   ->  GroupAggregate  (cost=10243181.14..11076086.13 rows=30287454 width=39) (actual time=78058.156..78058.411 rows=85 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1510509 read=932091 written=2689
         ->  Sort  (cost=10243181.14..10318899.78 rows=30287454 width=39) (actual time=78058.120..78058.157 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=1510509 read=932091 written=2689
               ->  Hash Join  (cost=2909773.73..5651455.75 rows=30287454 width=39) (actual time=57340.917..78056.753 rows=595 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1510497 read=932091 written=2689
                     ->  Seq Scan on lineitem  (cost=0.00..1681621.09 rows=60574909 width=8) (actual time=0.030..12010.836 rows=59983922 loops=1)
                           Buffers: shared hit=616853 read=459028
                     ->  Hash  (cost=2815180.13..2815180.13 rows=7567488 width=39) (actual time=57281.252..57281.252 rows=85 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65542kB
                           Buffers: shared hit=893644 read=473063 written=2689
                           ->  Hash Join  (cost=2197019.75..2815180.13 rows=7567488 width=39) (actual time=51121.538..57280.693 rows=85 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=893644 read=473063 written=2689
                                 ->  Hash Join  (cost=2127991.75..2632639.81 rows=7567488 width=20) (actual time=49675.991..55828.856 rows=85 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=893642 read=437787 written=121
                                       ->  Seq Scan on orders  (cost=0.00..406897.75 rows=15134975 width=16) (actual time=0.011..3152.638 rows=15000000 loops=1)
                                             Buffers: shared hit=220199 read=35349 written=118
                                       ->  Hash  (cost=2076749.06..2076749.06 rows=4099415 width=4) (actual time=49544.377..49544.377 rows=85 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32771kB
                                             Buffers: shared hit=673443 read=402438 written=3
                                             ->  HashAggregate  (cost=1984512.23..2035754.91 rows=4099415 width=8) (actual time=43594.722..49543.533 rows=85 loops=1)
                                                   Group Key: lineitem_1.l_orderkey
                                                   Filter: (sum(lineitem_1.l_quantity) > 314::double precision)
                                                   Rows Removed by Filter: 14999915
                                                   Buffers: shared hit=673443 read=402438 written=3
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1681635.15 rows=60575415 width=8) (actual time=0.015..13431.898 rows=59983922 loops=1)
                                                         Buffers: shared hit=673443 read=402438 written=3
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1432.863..1432.863 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=2 read=35276 written=2568
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.014..869.179 rows=1500000 loops=1)
                                             Buffers: shared hit=2 read=35276 written=2568
 Planning time: 4.830 ms
 Execution time: 78329.345 ms
(42 rows)

COMMIT;
COMMIT