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=10223989.50..10223992.25 rows=100 width=39) (actual time=98041.154..98041.416 rows=84 loops=1)
   Buffers: shared hit=1213294 read=1225127 written=200
   ->  GroupAggregate  (cost=10223989.50..11055381.27 rows=30232428 width=39) (actual time=98041.151..98041.403 rows=84 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1213294 read=1225127 written=200
         ->  Sort  (cost=10223989.50..10299570.57 rows=30232428 width=39) (actual time=98041.134..98041.168 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=1213294 read=1225127 written=200
               ->  Hash Join  (cost=2904301.71..5641003.27 rows=30232428 width=39) (actual time=75167.071..98039.913 rows=588 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1213282 read=1225127 written=200
                     ->  Seq Scan on lineitem  (cost=0.00..1678566.56 rows=60464856 width=8) (actual time=0.052..12043.676 rows=60044664 loops=1)
                           Buffers: shared hit=405580 read=668338
                     ->  Hash  (cost=2809801.76..2809801.76 rows=7559996 width=39) (actual time=74885.033..74885.033 rows=84 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65542kB
                           Buffers: shared hit=807702 read=556789 written=200
                           ->  Hash Join  (cost=2192476.26..2809801.76 rows=7559996 width=39) (actual time=64960.390..74880.911 rows=84 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=807702 read=556789 written=200
                                 ->  Hash Join  (cost=2123448.26..2627373.82 rows=7559996 width=20) (actual time=63692.503..73607.111 rows=84 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=807700 read=521513 written=145
                                       ->  Seq Scan on orders  (cost=0.00..406494.91 rows=15119991 width=16) (actual time=0.010..3997.500 rows=15015000 loops=1)
                                             Buffers: shared hit=139070 read=116225 written=144
                                       ->  Hash  (cost=2072534.89..2072534.89 rows=4073069 width=4) (actual time=63554.168..63554.168 rows=84 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32771kB
                                             Buffers: shared hit=668630 read=405288 written=1
                                             ->  HashAggregate  (cost=1980890.84..2031804.20 rows=4073069 width=8) (actual time=50684.867..63552.229 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=668630 read=405288 written=1
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1678566.56 rows=60464856 width=8) (actual time=0.013..14101.319 rows=60044664 loops=1)
                                                         Buffers: shared hit=668630 read=405288 written=1
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1254.880..1254.880 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=2 read=35276 written=55
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.017..788.471 rows=1500000 loops=1)
                                             Buffers: shared hit=2 read=35276 written=55
 Planning time: 4.726 ms
 Execution time: 98296.773 ms
(42 rows)

COMMIT;
COMMIT