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=10186496.21..10186498.96 rows=100 width=39) (actual time=75171.388..75171.641 rows=84 loops=1)
   Buffers: shared hit=1426650 read=1002253 dirtied=570 written=863
   ->  GroupAggregate  (cost=10186496.21..11014596.45 rows=30112736 width=39) (actual time=75171.384..75171.628 rows=84 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1426650 read=1002253 dirtied=570 written=863
         ->  Sort  (cost=10186496.21..10261778.05 rows=30112736 width=39) (actual time=75171.370..75171.402 rows=588 loops=1)
               Sort Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
               Sort Method: quicksort  Memory: 70kB
               Buffers: shared hit=1426650 read=1002253 dirtied=570 written=863
               ->  Hash Join  (cost=2896649.17..5622515.65 rows=30112736 width=39) (actual time=56723.749..75170.173 rows=588 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1426638 read=1002253 dirtied=570 written=863
                     ->  Seq Scan on lineitem  (cost=0.00..1671920.72 rows=60225472 width=8) (actual time=0.032..10535.159 rows=60045303 loops=1)
                           Buffers: shared hit=608024 read=461642 dirtied=570 written=542
                     ->  Hash  (cost=2802524.57..2802524.57 rows=7529968 width=39) (actual time=56081.868..56081.868 rows=84 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65542kB
                           Buffers: shared hit=818614 read=540611 written=321
                           ->  Hash Join  (cost=2186854.63..2802524.57 rows=7529968 width=39) (actual time=50029.905..56081.546 rows=84 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=818614 read=540611 written=321
                                 ->  Hash Join  (cost=2117826.63..2620547.05 rows=7529968 width=20) (actual time=48885.185..54936.526 rows=84 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=818612 read=505335 written=18
                                       ->  Seq Scan on orders  (cost=0.00..404880.36 rows=15059936 width=16) (actual time=0.009..3166.132 rows=15015000 loops=1)
                                             Buffers: shared hit=177861 read=76420 written=15
                                       ->  Hash  (cost=2066120.00..2066120.00 rows=4136530 width=4) (actual time=48742.663..48742.663 rows=84 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32771kB
                                             Buffers: shared hit=640751 read=428915 written=3
                                             ->  HashAggregate  (cost=1973048.08..2024754.70 rows=4136530 width=8) (actual time=40730.689..48742.170 rows=84 loops=1)
                                                   Group Key: lineitem_1.l_orderkey
                                                   Filter: (sum(lineitem_1.l_quantity) > 314::double precision)
                                                   Rows Removed by Filter: 15014916
                                                   Buffers: shared hit=640751 read=428915 written=3
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1671920.72 rows=60225472 width=8) (actual time=0.007..12085.659 rows=60045303 loops=1)
                                                         Buffers: shared hit=640751 read=428915 written=3
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1134.520..1134.520 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=2 read=35276 written=303
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.013..680.115 rows=1500000 loops=1)
                                             Buffers: shared hit=2 read=35276 written=303
 Planning time: 4.422 ms
 Execution time: 75419.684 ms
(42 rows)

COMMIT;
COMMIT