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=10352879.50..10352882.25 rows=100 width=39) (actual time=134600.575..134601.083 rows=84 loops=1)
   Buffers: shared hit=1039165 read=1389740 written=11
   ->  GroupAggregate  (cost=10352879.50..11180974.65 rows=30112551 width=39) (actual time=134600.571..134601.063 rows=84 loops=1)
         Buffers: shared hit=1039165 read=1389740 written=11
         ->  Sort  (cost=10352879.50..10428160.88 rows=30112551 width=39) (actual time=134600.535..134600.596 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=1039165 read=1389740 written=11
               ->  Hash Join  (cost=3063070.45..5788926.75 rows=30112551 width=39) (actual time=101258.004..134596.205 rows=588 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1039151 read=1389740 written=11
                     ->  Seq Scan on lineitem  (cost=0.00..1671917.02 rows=60225102 width=8) (actual time=0.042..19093.378 rows=60045303 loops=1)
                           Buffers: shared hit=318274 read=751392
                     ->  Hash  (cost=2968945.85..2968945.85 rows=7529968 width=39) (actual time=100634.629..100634.629 rows=84 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 6kB
                           Buffers: shared hit=720877 read=638348 written=11
                           ->  Hash Join  (cost=2184517.73..2968945.85 rows=7529968 width=39) (actual time=88962.125..100633.499 rows=84 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=720877 read=638348 written=11
                                 ->  Hash Join  (cost=2115489.73..2749318.49 rows=7529968 width=20) (actual time=87141.113..98805.807 rows=84 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=686013 read=637934 written=11
                                       ->  Seq Scan on orders  (cost=0.00..404880.36 rows=15059936 width=16) (actual time=0.021..6013.460 rows=15015000 loops=1)
                                             Buffers: shared hit=177724 read=76557 written=6
                                       ->  Hash  (cost=2064615.73..2064615.73 rows=4069920 width=4) (actual time=86959.348..86959.348 rows=84 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 3kB
                                             Buffers: shared hit=508289 read=561377 written=5
                                             ->  HashAggregate  (cost=1973042.53..2023916.53 rows=4069920 width=8) (actual time=77432.693..86958.563 rows=84 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 314::double precision)
                                                   Rows Removed by Filter: 15014916
                                                   Buffers: shared hit=508289 read=561377 written=5
                                                   ->  Seq Scan on lineitem  (cost=0.00..1671917.02 rows=60225102 width=8) (actual time=0.015..23812.611 rows=60045303 loops=1)
                                                         Buffers: shared hit=508289 read=561377 written=5
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1816.546..1816.546 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=34864 read=414
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.012..985.222 rows=1500000 loops=1)
                                             Buffers: shared hit=34864 read=414
 Total runtime: 135019.146 ms
(39 rows)

COMMIT;
COMMIT