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=10156220.44..10156223.19 rows=100 width=39) (actual time=82433.658..82433.957 rows=99 loops=1)
   Buffers: shared hit=1699458 read=722304 dirtied=790 written=10806
   ->  GroupAggregate  (cost=10156220.44..10981850.30 rows=30022904 width=39) (actual time=82433.655..82433.940 rows=99 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1699458 read=722304 dirtied=790 written=10806
         ->  Sort  (cost=10156220.44..10231277.70 rows=30022904 width=39) (actual time=82433.635..82433.669 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=1699458 read=722304 dirtied=790 written=10806
               ->  Hash Join  (cost=2888768.04..5606502.79 rows=30022904 width=39) (actual time=64250.215..82432.084 rows=693 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1699446 read=722304 dirtied=790 written=10806
                     ->  Seq Scan on lineitem  (cost=0.00..1666933.09 rows=60045809 width=8) (actual time=0.018..10873.710 rows=59985329 loops=1)
                           Buffers: shared hit=632374 read=434101 dirtied=790 written=783
                     ->  Hash  (cost=2794924.39..2794924.39 rows=7507492 width=39) (actual time=63807.870..63807.870 rows=99 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65543kB
                           Buffers: shared hit=1067072 read=288203 written=10023
                           ->  Hash Join  (cost=2180968.68..2794924.39 rows=7507492 width=39) (actual time=54386.249..63807.162 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=1067072 read=288203 written=10023
                                 ->  Hash Join  (cost=2111940.68..2613284.01 rows=7507492 width=20) (actual time=53298.209..62662.147 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=1032152 read=287845 written=10023
                                       ->  Seq Scan on orders  (cost=0.00..403671.84 rows=15014984 width=16) (actual time=0.006..3805.385 rows=15000000 loops=1)
                                             Buffers: shared hit=101675 read=151847 written=10018
                                       ->  Hash  (cost=2060234.06..2060234.06 rows=4136530 width=4) (actual time=53119.880..53119.880 rows=99 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32772kB
                                             Buffers: shared hit=930477 read=135998 written=5
                                             ->  HashAggregate  (cost=1967162.13..2018868.76 rows=4136530 width=8) (actual time=43516.943..53116.541 rows=99 loops=1)
                                                   Group Key: lineitem_1.l_orderkey
                                                   Filter: (sum(lineitem_1.l_quantity) > 313::double precision)
                                                   Rows Removed by Filter: 14999901
                                                   Buffers: shared hit=930477 read=135998 written=5
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1666933.09 rows=60045809 width=8) (actual time=0.021..12202.356 rows=59985329 loops=1)
                                                         Buffers: shared hit=930477 read=135998 written=5
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1075.423..1075.423 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=34920 read=358
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.016..443.420 rows=1500000 loops=1)
                                             Buffers: shared hit=34920 read=358
 Planning time: 3.298 ms
 Execution time: 82746.612 ms
(42 rows)

COMMIT;
COMMIT