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=10320779.99..10320782.74 rows=100 width=39) (actual time=127449.890..127450.558 rows=99 loops=1)
   Buffers: shared hit=1300001 read=1121763 written=13
   ->  GroupAggregate  (cost=10320779.99..11146412.71 rows=30023008 width=39) (actual time=127449.886..127450.529 rows=99 loops=1)
         Buffers: shared hit=1300001 read=1121763 written=13
         ->  Sort  (cost=10320779.99..10395837.51 rows=30023008 width=39) (actual time=127449.856..127449.991 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=1300001 read=1121763 written=13
               ->  Hash Join  (cost=3053304.71..5771045.17 rows=30023008 width=39) (actual time=92424.464..127443.037 rows=693 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1299987 read=1121763 written=13
                     ->  Seq Scan on lineitem  (cost=0.00..1666935.17 rows=60046017 width=8) (actual time=0.034..21481.590 rows=59985329 loops=1)
                           Buffers: shared hit=252566 read=813909 written=2
                     ->  Hash  (cost=2959461.06..2959461.06 rows=7507492 width=39) (actual time=91755.474..91755.474 rows=99 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 7kB
                           Buffers: shared hit=1047421 read=307854 written=11
                           ->  Hash Join  (cost=2177561.23..2959461.06 rows=7507492 width=39) (actual time=82996.834..91754.954 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=1047421 read=307854 written=11
                                 ->  Hash Join  (cost=2108533.23..2740283.22 rows=7507492 width=20) (actual time=81164.557..89920.355 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=1012379 read=307618 written=11
                                       ->  Seq Scan on orders  (cost=0.00..403671.84 rows=15014984 width=16) (actual time=0.012..4144.785 rows=15000000 loops=1)
                                             Buffers: shared hit=253522
                                       ->  Hash  (cost=2058044.67..2058044.67 rows=4039085 width=4) (actual time=81029.170..81029.170 rows=99 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 4kB
                                             Buffers: shared hit=758857 read=307618 written=11
                                             ->  HashAggregate  (cost=1967165.25..2017653.82 rows=4039085 width=8) (actual time=72181.357..81028.479 rows=99 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 313::double precision)
                                                   Rows Removed by Filter: 14999901
                                                   Buffers: shared hit=758857 read=307618 written=11
                                                   ->  Seq Scan on lineitem  (cost=0.00..1666935.17 rows=60046017 width=8) (actual time=0.014..20539.067 rows=59985329 loops=1)
                                                         Buffers: shared hit=758857 read=307618 written=11
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1830.509..1830.509 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=35042 read=236
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.015..912.263 rows=1500000 loops=1)
                                             Buffers: shared hit=35042 read=236
 Total runtime: 127779.606 ms
(39 rows)

COMMIT;
COMMIT