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=10329451.50..10329454.25 rows=100 width=39) (actual time=102410.278..102410.559 rows=84 loops=1)
   Buffers: shared hit=1221706 read=1202453 written=4
   ->  GroupAggregate  (cost=10329451.50..11155911.58 rows=30053094 width=39) (actual time=102410.275..102410.545 rows=84 loops=1)
         Buffers: shared hit=1221706 read=1202453 written=4
         ->  Sort  (cost=10329451.50..10404584.23 rows=30053094 width=39) (actual time=102410.256..102410.293 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=1221706 read=1202453 written=4
               ->  Hash Join  (cost=3054474.23..5774940.43 rows=30053094 width=39) (actual time=77546.652..102407.167 rows=588 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1221692 read=1202453 written=4
                     ->  Seq Scan on lineitem  (cost=0.00..1668607.89 rows=60106189 width=8) (actual time=0.050..13606.677 rows=60045603 loops=1)
                           Buffers: shared hit=591659 read=475887
                     ->  Hash  (cost=2960536.93..2960536.93 rows=7514984 width=39) (actual time=77455.612..77455.612 rows=84 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 6kB
                           Buffers: shared hit=630033 read=726566 written=4
                           ->  Hash Join  (cost=2178261.05..2960536.93 rows=7514984 width=39) (actual time=68651.884..77454.775 rows=84 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=630033 read=726566 written=4
                                 ->  Hash Join  (cost=2109233.05..2741209.25 rows=7514984 width=20) (actual time=66834.343..75633.522 rows=84 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=630031 read=691290 written=4
                                       ->  Seq Scan on orders  (cost=0.00..404074.68 rows=15029968 width=16) (actual time=0.008..4201.699 rows=15015000 loops=1)
                                             Buffers: shared hit=114585 read=139190
                                       ->  Hash  (cost=2059199.40..2059199.40 rows=4002692 width=4) (actual time=66690.727..66690.727 rows=84 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 3kB
                                             Buffers: shared hit=515446 read=552100 written=4
                                             ->  HashAggregate  (cost=1969138.83..2019172.48 rows=4002692 width=8) (actual time=57932.005..66689.934 rows=84 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 314::double precision)
                                                   Rows Removed by Filter: 15014916
                                                   Buffers: shared hit=515446 read=552100 written=4
                                                   ->  Seq Scan on lineitem  (cost=0.00..1668607.89 rows=60106189 width=8) (actual time=0.019..15444.899 rows=60045603 loops=1)
                                                         Buffers: shared hit=515446 read=552100 written=4
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1815.997..1815.997 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=2 read=35276
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.011..873.135 rows=1500000 loops=1)
                                             Buffers: shared hit=2 read=35276
 Total runtime: 102686.286 ms
(39 rows)

COMMIT;
COMMIT