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=10183638.74..10183641.49 rows=100 width=39) (actual time=105181.879..105182.145 rows=84 loops=1)
   Buffers: shared hit=1346513 read=1082390 dirtied=1062 written=518
   ->  GroupAggregate  (cost=10183638.74..11011738.76 rows=30112728 width=39) (actual time=105181.876..105182.134 rows=84 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1346513 read=1082390 dirtied=1062 written=518
         ->  Sort  (cost=10183638.74..10258920.56 rows=30112728 width=39) (actual time=105181.861..105181.895 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=1346513 read=1082390 dirtied=1062 written=518
               ->  Hash Join  (cost=2893793.19..5619659.23 rows=30112728 width=39) (actual time=81827.456..105180.626 rows=588 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1346501 read=1082390 dirtied=1062 written=518
                     ->  Seq Scan on lineitem  (cost=0.00..1671920.56 rows=60225456 width=8) (actual time=0.071..12034.923 rows=60045303 loops=1)
                           Buffers: shared hit=579902 read=489764 dirtied=1062 written=458
                     ->  Hash  (cost=2799668.59..2799668.59 rows=7529968 width=39) (actual time=81306.292..81306.292 rows=84 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65542kB
                           Buffers: shared hit=766599 read=592626 written=60
                           ->  Hash Join  (cost=2184633.26..2799668.59 rows=7529968 width=39) (actual time=71676.427..81302.395 rows=84 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=766599 read=592626 written=60
                                 ->  Hash Join  (cost=2115605.26..2617691.07 rows=7529968 width=20) (actual time=70557.666..80178.893 rows=84 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=736291 read=587656 written=11
                                       ->  Seq Scan on orders  (cost=0.00..404880.36 rows=15059936 width=16) (actual time=0.010..3804.413 rows=15015000 loops=1)
                                             Buffers: shared hit=141567 read=112714 written=6
                                       ->  Hash  (cost=2064691.89..2064691.89 rows=4073069 width=4) (actual time=70122.989..70122.989 rows=84 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32771kB
                                             Buffers: shared hit=594724 read=474942 written=5
                                             ->  HashAggregate  (cost=1973047.84..2023961.20 rows=4073069 width=8) (actual time=58025.434..70120.067 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=594724 read=474942 written=5
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1671920.56 rows=60225456 width=8) (actual time=0.015..14084.776 rows=60045303 loops=1)
                                                         Buffers: shared hit=594724 read=474942 written=5
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1105.378..1105.378 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=30308 read=4970 written=49
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.018..628.073 rows=1500000 loops=1)
                                             Buffers: shared hit=30308 read=4970 written=49
 Planning time: 4.658 ms
 Execution time: 105610.855 ms
(42 rows)

COMMIT;
COMMIT