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=10351561.51..10351564.26 rows=100 width=39) (actual time=130617.893..130618.451 rows=99 loops=1)
   Buffers: shared hit=1483888 read=945017 written=62
   ->  GroupAggregate  (cost=10351561.51..11179664.61 rows=30112840 width=39) (actual time=130617.889..130618.434 rows=99 loops=1)
         Buffers: shared hit=1483888 read=945017 written=62
         ->  Sort  (cost=10351561.51..10426843.61 rows=30112840 width=39) (actual time=130617.779..130617.884 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=1483888 read=945017 written=62
               ->  Hash Join  (cost=3061691.56..5787563.78 rows=30112840 width=39) (actual time=96614.146..130612.772 rows=693 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1483874 read=945017 written=62
                     ->  Seq Scan on lineitem  (cost=0.00..1671922.81 rows=60225681 width=8) (actual time=0.054..19934.420 rows=60045303 loops=1)
                           Buffers: shared hit=637499 read=432167
                     ->  Hash  (cost=2967566.96..2967566.96 rows=7529968 width=39) (actual time=95987.845..95987.845 rows=99 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 7kB
                           Buffers: shared hit=846375 read=512850 written=62
                           ->  Hash Join  (cost=2183447.19..2967566.96 rows=7529968 width=39) (actual time=84809.897..95983.992 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=846375 read=512850 written=62
                                 ->  Hash Join  (cost=2114419.19..2747939.60 rows=7529968 width=20) (actual time=82766.620..93933.686 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=811122 read=512825 written=62
                                       ->  Seq Scan on orders  (cost=0.00..404880.36 rows=15059936 width=16) (actual time=0.012..5535.112 rows=15015000 loops=1)
                                             Buffers: shared hit=248094 read=6187 written=62
                                       ->  Hash  (cost=2063930.63..2063930.63 rows=4039085 width=4) (actual time=82560.006..82560.006 rows=99 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 4kB
                                             Buffers: shared hit=563028 read=506638
                                             ->  HashAggregate  (cost=1973051.22..2023539.78 rows=4039085 width=8) (actual time=73531.116..82559.261 rows=99 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 313::double precision)
                                                   Rows Removed by Filter: 15014901
                                                   Buffers: shared hit=563028 read=506638
                                                   ->  Seq Scan on lineitem  (cost=0.00..1671922.81 rows=60225681 width=8) (actual time=0.017..23413.817 rows=60045303 loops=1)
                                                         Buffers: shared hit=563028 read=506638
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=2041.002..2041.002 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=35253 read=25
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.019..880.623 rows=1500000 loops=1)
                                             Buffers: shared hit=35253 read=25
 Total runtime: 130936.918 ms
(39 rows)

COMMIT;
COMMIT