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=10322571.74..10322574.49 rows=100 width=39) (actual time=215878.665..215879.150 rows=99 loops=1)
   Buffers: shared hit=1320055 read=1101709 written=2
   ->  GroupAggregate  (cost=10322571.74..11148189.55 rows=30022466 width=39) (actual time=215878.661..215879.125 rows=99 loops=1)
         Buffers: shared hit=1320055 read=1101709 written=2
         ->  Sort  (cost=10322571.74..10397627.90 rows=30022466 width=39) (actual time=215878.631..215878.703 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=1320055 read=1101709 written=2
               ->  Hash Join  (cost=3055211.51..5772922.14 rows=30022466 width=39) (actual time=126566.786..215873.321 rows=693 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1320041 read=1101709 written=2
                     ->  Seq Scan on lineitem  (cost=0.00..1666924.32 rows=60044932 width=8) (actual time=0.103..73876.057 rows=59985329 loops=1)
                           Buffers: shared hit=102253 read=964222
                     ->  Hash  (cost=2961367.86..2961367.86 rows=7507492 width=39) (actual time=125440.304..125440.304 rows=99 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 7kB
                           Buffers: shared hit=1217788 read=137487 written=2
                           ->  Hash Join  (cost=2179040.68..2961367.86 rows=7507492 width=39) (actual time=111994.272..125439.657 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=1217788 read=137487 written=2
                                 ->  Hash Join  (cost=2110012.68..2742190.02 rows=7507492 width=20) (actual time=109941.248..123384.585 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=1183116 read=136881 written=2
                                       ->  Seq Scan on orders  (cost=0.00..403671.84 rows=15014984 width=16) (actual time=0.014..7675.546 rows=15000000 loops=1)
                                             Buffers: shared hit=253522
                                       ->  Hash  (cost=2058989.93..2058989.93 rows=4081820 width=4) (actual time=109725.327..109725.327 rows=99 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 4kB
                                             Buffers: shared hit=929594 read=136881 written=2
                                             ->  HashAggregate  (cost=1967148.98..2018171.73 rows=4081820 width=8) (actual time=99303.116..109724.388 rows=99 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 313::double precision)
                                                   Rows Removed by Filter: 14999901
                                                   Buffers: shared hit=929594 read=136881 written=2
                                                   ->  Seq Scan on lineitem  (cost=0.00..1666924.32 rows=60044932 width=8) (actual time=0.011..44663.820 rows=59985329 loops=1)
                                                         Buffers: shared hit=929594 read=136881 written=2
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=2051.461..2051.461 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=34672 read=606
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.014..1211.472 rows=1500000 loops=1)
                                             Buffers: shared hit=34672 read=606
 Total runtime: 216064.522 ms
(39 rows)

COMMIT;
COMMIT