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=10369887.32..10369890.07 rows=100 width=39) (actual time=165196.720..165197.063 rows=99 loops=1)
   Buffers: shared hit=1386750 read=1046925
   ->  GroupAggregate  (cost=10369887.32..11199632.45 rows=30172550 width=39) (actual time=165196.716..165197.051 rows=99 loops=1)
         Buffers: shared hit=1386750 read=1046925
         ->  Sort  (cost=10369887.32..10445318.70 rows=30172550 width=39) (actual time=165196.700..165196.747 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=1386750 read=1046925
               ->  Hash Join  (cost=3065118.58..5796406.81 rows=30172550 width=39) (actual time=113537.017..165193.007 rows=693 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1386736 read=1046925
                     ->  Seq Scan on lineitem  (cost=0.00..1675248.99 rows=60345099 width=8) (actual time=0.028..36327.430 rows=60045826 loops=1)
                           Buffers: shared hit=360540 read=711258
                     ->  Hash  (cost=2970806.68..2970806.68 rows=7544952 width=39) (actual time=112374.087..112374.087 rows=99 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 7kB
                           Buffers: shared hit=1026196 read=335667
                           ->  Hash Join  (cost=2185687.73..2970806.68 rows=7544952 width=39) (actual time=101916.215..112372.873 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=1026196 read=335667
                                 ->  Hash Join  (cost=2116659.73..2750879.64 rows=7544952 width=20) (actual time=98096.514..108548.490 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=1026193 read=300392
                                       ->  Seq Scan on orders  (cost=0.00..405686.04 rows=15089904 width=16) (actual time=0.011..5626.715 rows=15015000 loops=1)
                                             Buffers: shared hit=254774 read=13
                                       ->  Hash  (cost=2066772.14..2066772.14 rows=3991007 width=4) (actual time=97949.312..97949.312 rows=99 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 4kB
                                             Buffers: shared hit=771419 read=300379
                                             ->  HashAggregate  (cost=1976974.49..2026862.07 rows=3991007 width=8) (actual time=88413.790..97948.315 rows=99 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 313::double precision)
                                                   Rows Removed by Filter: 15014901
                                                   Buffers: shared hit=771419 read=300379
                                                   ->  Seq Scan on lineitem  (cost=0.00..1675248.99 rows=60345099 width=8) (actual time=0.013..33272.425 rows=60045826 loops=1)
                                                         Buffers: shared hit=771419 read=300379
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=3817.901..3817.901 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=3 read=35275
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.014..2774.864 rows=1500000 loops=1)
                                             Buffers: shared hit=3 read=35275
 Total runtime: 165474.144 ms
(39 rows)

COMMIT;
COMMIT