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=10404118.21..10404120.96 rows=100 width=39) (actual time=123772.574..123773.136 rows=85 loops=1)
   Buffers: shared hit=980322 read=1460470 written=185
   ->  GroupAggregate  (cost=10404118.21..11236324.17 rows=30262035 width=39) (actual time=123772.571..123773.118 rows=85 loops=1)
         Buffers: shared hit=980322 read=1460470 written=185
         ->  Sort  (cost=10404118.21..10479773.30 rows=30262035 width=39) (actual time=123772.538..123772.678 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=980322 read=1460470 written=185
               ->  Hash Join  (cost=3077039.75..5816427.69 rows=30262035 width=39) (actual time=88742.332..123767.940 rows=595 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=980308 read=1460470 written=185
                     ->  Seq Scan on lineitem  (cost=0.00..1680216.70 rows=60524070 width=8) (actual time=0.055..21398.930 rows=60044082 loops=1)
                           Buffers: shared hit=256216 read=818760 written=66
                     ->  Hash  (cost=2982446.15..2982446.15 rows=7567488 width=39) (actual time=88276.620..88276.620 rows=85 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 6kB
                           Buffers: shared hit=724092 read=641710 written=119
                           ->  Hash Join  (cost=2194312.25..2982446.15 rows=7567488 width=39) (actual time=77782.229..88276.312 rows=85 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=724092 read=641710 written=119
                                 ->  Hash Join  (cost=2125284.25..2762068.39 rows=7567488 width=20) (actual time=76379.018..86870.144 rows=85 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=688817 read=641707 written=119
                                       ->  Seq Scan on orders  (cost=0.00..406897.75 rows=15134975 width=16) (actual time=0.010..5944.321 rows=15015000 loops=1)
                                             Buffers: shared hit=82231 read=173317 written=119
                                       ->  Hash  (cost=2074410.25..2074410.25 rows=4069920 width=4) (actual time=76232.242..76232.242 rows=85 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 3kB
                                             Buffers: shared hit=606586 read=468390
                                             ->  HashAggregate  (cost=1982837.05..2033711.05 rows=4069920 width=8) (actual time=67380.583..76231.704 rows=85 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 314::double precision)
                                                   Rows Removed by Filter: 15014915
                                                   Buffers: shared hit=606586 read=468390
                                                   ->  Seq Scan on lineitem  (cost=0.00..1680216.70 rows=60524070 width=8) (actual time=0.047..21149.818 rows=60044082 loops=1)
                                                         Buffers: shared hit=606586 read=468390
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1401.052..1401.052 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=35275 read=3
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.018..706.714 rows=1500000 loops=1)
                                             Buffers: shared hit=35275 read=3
 Total runtime: 123982.451 ms
(39 rows)

COMMIT;
COMMIT