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=10330991.04..10330993.79 rows=100 width=39) (actual time=151931.125..151931.824 rows=99 loops=1)
   Buffers: shared hit=1307770 read=1116389 written=9
   ->  GroupAggregate  (cost=10330991.04..11157445.52 rows=30052890 width=39) (actual time=151931.121..151931.809 rows=99 loops=1)
         Buffers: shared hit=1307770 read=1116389 written=9
         ->  Sort  (cost=10330991.04..10406123.27 rows=30052890 width=39) (actual time=151931.083..151931.224 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=1307770 read=1116389 written=9
               ->  Hash Join  (cost=3056055.31..5776510.28 rows=30052890 width=39) (actual time=111990.042..151926.002 rows=693 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1307756 read=1116389 written=9
                     ->  Seq Scan on lineitem  (cost=0.00..1668603.81 rows=60105781 width=8) (actual time=0.038..24660.003 rows=60045603 loops=1)
                           Buffers: shared hit=594116 read=473430
                     ->  Hash  (cost=2962118.01..2962118.01 rows=7514984 width=39) (actual time=111978.886..111978.886 rows=99 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 7kB
                           Buffers: shared hit=713640 read=642959 written=9
                           ->  Hash Join  (cost=2179489.42..2962118.01 rows=7514984 width=39) (actual time=100908.644..111977.762 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=713640 read=642959 written=9
                                 ->  Hash Join  (cost=2110461.42..2742790.33 rows=7514984 width=20) (actual time=99143.701..110205.409 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=678452 read=642869 written=9
                                       ->  Seq Scan on orders  (cost=0.00..404074.68 rows=15029968 width=16) (actual time=0.008..5652.145 rows=15015000 loops=1)
                                             Buffers: shared hit=243186 read=10589
                                       ->  Hash  (cost=2059986.88..2059986.88 rows=4037963 width=4) (actual time=98974.599..98974.599 rows=99 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 4kB
                                             Buffers: shared hit=435266 read=632280 written=9
                                             ->  HashAggregate  (cost=1969132.72..2019607.25 rows=4037963 width=8) (actual time=88721.297..98973.410 rows=99 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 313::double precision)
                                                   Rows Removed by Filter: 15014901
                                                   Buffers: shared hit=435266 read=632280 written=9
                                                   ->  Seq Scan on lineitem  (cost=0.00..1668603.81 rows=60105781 width=8) (actual time=0.020..23504.619 rows=60045603 loops=1)
                                                         Buffers: shared hit=435266 read=632280 written=9
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1762.907..1762.907 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=35188 read=90
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.010..786.588 rows=1500000 loops=1)
                                             Buffers: shared hit=35188 read=90
 Total runtime: 152312.051 ms
(39 rows)

COMMIT;
COMMIT