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) > 315
	)
	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=10455647.18..10455649.93 rows=100 width=39) (actual time=134358.501..134358.990 rows=76 loops=1)
   Buffers: shared hit=1517270 read=935473 dirtied=17 written=3846
   ->  GroupAggregate  (cost=10455647.18..11291989.50 rows=30412448 width=39) (actual time=134358.498..134358.969 rows=76 loops=1)
         Buffers: shared hit=1517270 read=935473 dirtied=17 written=3846
         ->  Sort  (cost=10455647.18..10531678.30 rows=30412448 width=39) (actual time=134358.468..134358.548 rows=532 loops=1)
               Sort Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
               Sort Method: quicksort  Memory: 66kB
               Buffers: shared hit=1517270 read=935473 dirtied=17 written=3846
               ->  Hash Join  (cost=3091063.27..5844066.90 rows=30412448 width=39) (actual time=101093.218..134354.120 rows=532 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1517256 read=935473 dirtied=17 written=3846
                     ->  Seq Scan on lineitem  (cost=0.00..1688567.95 rows=60824895 width=8) (actual time=0.092..19648.637 rows=60045033 loops=1)
                           Buffers: shared hit=682112 read=398207
                     ->  Hash  (cost=2996001.42..2996001.42 rows=7604948 width=39) (actual time=100813.764..100813.764 rows=76 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 6kB
                           Buffers: shared hit=835144 read=537266 dirtied=17 written=3846
                           ->  Hash Join  (cost=2204167.62..2996001.42 rows=7604948 width=39) (actual time=89626.469..100813.315 rows=76 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=835144 read=537266 dirtied=17 written=3846
                                 ->  Hash Join  (cost=2135139.62..2774874.46 rows=7604948 width=20) (actual time=86455.459..97636.150 rows=76 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=835142 read=501990 dirtied=17 written=40
                                       ->  Seq Scan on orders  (cost=0.00..408911.95 rows=15209895 width=16) (actual time=0.012..5388.665 rows=15015000 loops=1)
                                             Buffers: shared hit=252136 read=4677 dirtied=17 written=39
                                       ->  Hash  (cost=2084265.63..2084265.63 rows=4069920 width=4) (actual time=86280.940..86280.940 rows=76 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 3kB
                                             Buffers: shared hit=583006 read=497313 written=1
                                             ->  HashAggregate  (cost=1992692.43..2043566.43 rows=4069920 width=8) (actual time=76855.868..86280.084 rows=76 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 315::double precision)
                                                   Rows Removed by Filter: 15014924
                                                   Buffers: shared hit=583006 read=497313 written=1
                                                   ->  Seq Scan on lineitem  (cost=0.00..1688567.95 rows=60824895 width=8) (actual time=0.016..23030.084 rows=60045033 loops=1)
                                                         Buffers: shared hit=583006 read=497313 written=1
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=3168.702..3168.702 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=2 read=35276 written=3806
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.014..1441.337 rows=1500000 loops=1)
                                             Buffers: shared hit=2 read=35276 written=3806
 Total runtime: 134691.770 ms
(39 rows)

COMMIT;
COMMIT