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=10363231.05..10363233.80 rows=100 width=39) (actual time=127014.540..127015.066 rows=99 loops=1)
   Buffers: shared hit=1624886 read=806420 dirtied=406 written=2
   ->  GroupAggregate  (cost=10363231.05..11192157.66 rows=30142786 width=39) (actual time=127014.537..127015.046 rows=99 loops=1)
         Buffers: shared hit=1624886 read=806420 dirtied=406 written=2
         ->  Sort  (cost=10363231.05..10438588.01 rows=30142786 width=39) (actual time=127014.513..127014.593 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=1624886 read=806420 dirtied=406 written=2
               ->  Hash Join  (cost=3065885.11..5794478.32 rows=30142786 width=39) (actual time=97202.085..127009.648 rows=693 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1624872 read=806420 dirtied=406 written=2
                     ->  Seq Scan on lineitem  (cost=0.00..1673595.71 rows=60285571 width=8) (actual time=0.024..16932.178 rows=59986308 loops=1)
                           Buffers: shared hit=651444 read=419296
                     ->  Hash  (cost=2971666.86..2971666.86 rows=7537460 width=39) (actual time=97025.607..97025.607 rows=99 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 7kB
                           Buffers: shared hit=973428 read=387124 dirtied=406 written=2
                           ->  Hash Join  (cost=2186498.76..2971666.86 rows=7537460 width=39) (actual time=86648.293..97025.015 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=973428 read=387124 dirtied=406 written=2
                                 ->  Hash Join  (cost=2117470.76..2751889.66 rows=7537460 width=20) (actual time=85165.395..95528.240 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=938150 read=387124 dirtied=406 written=2
                                       ->  Seq Scan on orders  (cost=0.00..405283.20 rows=15074920 width=16) (actual time=0.016..4901.675 rows=15000000 loops=1)
                                             Buffers: shared hit=253004 read=1530 written=2
                                       ->  Hash  (cost=2066596.76..2066596.76 rows=4069920 width=4) (actual time=84964.814..84964.814 rows=99 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 4kB
                                             Buffers: shared hit=685146 read=385594 dirtied=406
                                             ->  HashAggregate  (cost=1975023.56..2025897.56 rows=4069920 width=8) (actual time=76058.781..84963.982 rows=99 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 313::double precision)
                                                   Rows Removed by Filter: 14999901
                                                   Buffers: shared hit=685146 read=385594 dirtied=406
                                                   ->  Seq Scan on lineitem  (cost=0.00..1673595.71 rows=60285571 width=8) (actual time=0.031..23607.573 rows=59986308 loops=1)
                                                         Buffers: shared hit=685146 read=385594 dirtied=406
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1481.274..1481.274 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=35278
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.009..747.997 rows=1500000 loops=1)
                                             Buffers: shared hit=35278
 Total runtime: 127271.539 ms
(39 rows)

COMMIT;
COMMIT