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) > 313
	)
	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=10183638.74..10183641.49 rows=100 width=39) (actual time=105107.584..105107.899 rows=99 loops=1)
   Buffers: shared hit=1380712 read=1048191 written=13
   ->  GroupAggregate  (cost=10183638.74..11011738.76 rows=30112728 width=39) (actual time=105107.580..105107.886 rows=99 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1380712 read=1048191 written=13
         ->  Sort  (cost=10183638.74..10258920.56 rows=30112728 width=39) (actual time=105107.531..105107.572 rows=693 loops=1)
               Sort Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
               Sort Method: quicksort  Memory: 79kB
               Buffers: shared hit=1380712 read=1048191 written=13
               ->  Hash Join  (cost=2893793.19..5619659.23 rows=30112728 width=39) (actual time=80900.405..105106.020 rows=693 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1380700 read=1048191 written=13
                     ->  Seq Scan on lineitem  (cost=0.00..1671920.56 rows=60225456 width=8) (actual time=0.025..12709.438 rows=60045303 loops=1)
                           Buffers: shared hit=574631 read=495035 written=2
                     ->  Hash  (cost=2799668.59..2799668.59 rows=7529968 width=39) (actual time=80373.246..80373.246 rows=99 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65543kB
                           Buffers: shared hit=806069 read=553156 written=11
                           ->  Hash Join  (cost=2184633.26..2799668.59 rows=7529968 width=39) (actual time=70625.711..80369.435 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=806069 read=553156 written=11
                                 ->  Hash Join  (cost=2115605.26..2617691.07 rows=7529968 width=20) (actual time=69348.455..79086.830 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=806062 read=517885 written=11
                                       ->  Seq Scan on orders  (cost=0.00..404880.36 rows=15059936 width=16) (actual time=0.010..3894.460 rows=15015000 loops=1)
                                             Buffers: shared hit=164798 read=89483 written=6
                                       ->  Hash  (cost=2064691.89..2064691.89 rows=4073069 width=4) (actual time=68865.893..68865.893 rows=99 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32772kB
                                             Buffers: shared hit=641264 read=428402 written=5
                                             ->  HashAggregate  (cost=1973047.84..2023961.20 rows=4073069 width=8) (actual time=57064.111..68862.330 rows=99 loops=1)
                                                   Group Key: lineitem_1.l_orderkey
                                                   Filter: (sum(lineitem_1.l_quantity) > 313::double precision)
                                                   Rows Removed by Filter: 15014901
                                                   Buffers: shared hit=641264 read=428402 written=5
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1671920.56 rows=60225456 width=8) (actual time=0.016..14448.158 rows=60045303 loops=1)
                                                         Buffers: shared hit=641264 read=428402 written=5
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1264.674..1264.674 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=7 read=35271
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.017..764.530 rows=1500000 loops=1)
                                             Buffers: shared hit=7 read=35271
 Planning time: 4.573 ms
 Execution time: 105422.171 ms
(42 rows)

COMMIT;
COMMIT