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=10250709.09..10250711.84 rows=100 width=39) (actual time=92264.432..92264.713 rows=85 loops=1)
   Buffers: shared hit=1262577 read=1183007 dirtied=543 written=676
   ->  GroupAggregate  (cost=10250709.09..11084578.28 rows=30322516 width=39) (actual time=92264.430..92264.702 rows=85 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1262577 read=1183007 dirtied=543 written=676
         ->  Sort  (cost=10250709.09..10326515.38 rows=30322516 width=39) (actual time=92264.411..92264.443 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=1262577 read=1183007 dirtied=543 written=676
               ->  Hash Join  (cost=2908556.37..5653414.79 rows=30322516 width=39) (actual time=69664.768..92263.151 rows=595 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1262565 read=1183007 dirtied=543 written=676
                     ->  Seq Scan on lineitem  (cost=0.00..1683570.33 rows=60645033 width=8) (actual time=0.031..12929.904 rows=60044872 loops=1)
                           Buffers: shared hit=527479 read=549641 dirtied=543 written=536
                     ->  Hash  (cost=2813775.47..2813775.47 rows=7582472 width=39) (actual time=69065.706..69065.706 rows=85 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65542kB
                           Buffers: shared hit=735086 read=633366 written=140
                           ->  Hash Join  (cost=2195545.77..2813775.47 rows=7582472 width=39) (actual time=59230.990..69065.170 rows=85 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=735086 read=633366 written=140
                                 ->  Hash Join  (cost=2126517.77..2631010.39 rows=7582472 width=20) (actual time=58081.904..67915.090 rows=85 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=699977 read=633197 written=140
                                       ->  Seq Scan on orders  (cost=0.00..407703.43 rows=15164943 width=16) (actual time=0.009..3966.030 rows=15015000 loops=1)
                                             Buffers: shared hit=172878 read=83176 written=138
                                       ->  Hash  (cost=2076616.96..2076616.96 rows=3992065 width=4) (actual time=57916.452..57916.452 rows=85 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32771kB
                                             Buffers: shared hit=527099 read=550021 written=2
                                             ->  HashAggregate  (cost=1986795.50..2036696.31 rows=3992065 width=8) (actual time=49830.613..57914.934 rows=85 loops=1)
                                                   Group Key: lineitem_1.l_orderkey
                                                   Filter: (sum(lineitem_1.l_quantity) > 314::double precision)
                                                   Rows Removed by Filter: 15014915
                                                   Buffers: shared hit=527099 read=550021 written=2
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1683570.33 rows=60645033 width=8) (actual time=0.012..13807.238 rows=60044872 loops=1)
                                                         Buffers: shared hit=527099 read=550021 written=2
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1134.604..1134.604 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=35109 read=169
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.018..542.802 rows=1500000 loops=1)
                                             Buffers: shared hit=35109 read=169
 Planning time: 4.793 ms
 Execution time: 92454.375 ms
(42 rows)

COMMIT;
COMMIT