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=10370469.71..10370472.46 rows=100 width=39) (actual time=96327.108..96327.390 rows=84 loops=1)
   Buffers: shared hit=1420346 read=1013329 written=2
   ->  GroupAggregate  (cost=10370469.71..11200221.58 rows=30172795 width=39) (actual time=96327.104..96327.377 rows=84 loops=1)
         Buffers: shared hit=1420346 read=1013329 written=2
         ->  Sort  (cost=10370469.71..10445901.70 rows=30172795 width=39) (actual time=96327.085..96327.124 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=1420346 read=1013329 written=2
               ->  Hash Join  (cost=3065651.77..5796953.50 rows=30172795 width=39) (actual time=72644.636..96323.923 rows=588 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1420332 read=1013329 written=2
                     ->  Seq Scan on lineitem  (cost=0.00..1675253.90 rows=60345590 width=8) (actual time=0.048..13193.801 rows=60045826 loops=1)
                           Buffers: shared hit=957728 read=114070 written=2
                     ->  Hash  (cost=2971339.87..2971339.87 rows=7544952 width=39) (actual time=72197.087..72197.087 rows=84 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 6kB
                           Buffers: shared hit=462604 read=899259
                           ->  Hash Join  (cost=2186104.07..2971339.87 rows=7544952 width=39) (actual time=64277.277..72196.607 rows=84 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=462604 read=899259
                                 ->  Hash Join  (cost=2117076.07..2751412.83 rows=7544952 width=20) (actual time=63368.313..71284.942 rows=84 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=427326 read=899259
                                       ->  Seq Scan on orders  (cost=0.00..405686.04 rows=15089904 width=16) (actual time=0.010..3913.810 rows=15015000 loops=1)
                                             Buffers: shared hit=254787
                                       ->  Hash  (cost=2067042.42..2067042.42 rows=4002692 width=4) (actual time=63232.584..63232.584 rows=84 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 3kB
                                             Buffers: shared hit=172539 read=899259
                                             ->  HashAggregate  (cost=1976981.85..2027015.50 rows=4002692 width=8) (actual time=53469.553..63231.884 rows=84 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 314::double precision)
                                                   Rows Removed by Filter: 15014916
                                                   Buffers: shared hit=172539 read=899259
                                                   ->  Seq Scan on lineitem  (cost=0.00..1675253.90 rows=60345590 width=8) (actual time=0.010..14371.573 rows=60045826 loops=1)
                                                         Buffers: shared hit=172539 read=899259
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=907.206..907.206 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=0.013..481.268 rows=1500000 loops=1)
                                             Buffers: shared hit=35278
 Total runtime: 96606.733 ms
(39 rows)

COMMIT;
COMMIT