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=10353502.24..10353504.99 rows=100 width=39) (actual time=112501.686..112502.123 rows=99 loops=1)
   Buffers: shared hit=1029529 read=1399376 dirtied=1065 written=905
   ->  GroupAggregate  (cost=10353502.24..11181593.84 rows=30112422 width=39) (actual time=112501.682..112502.106 rows=99 loops=1)
         Buffers: shared hit=1029529 read=1399376 dirtied=1065 written=905
         ->  Sort  (cost=10353502.24..10428783.29 rows=30112422 width=39) (actual time=112501.658..112501.730 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=1029529 read=1399376 dirtied=1065 written=905
               ->  Hash Join  (cost=3063720.72..5789569.95 rows=30112422 width=39) (actual time=87657.478..112498.138 rows=693 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1029515 read=1399376 dirtied=1065 written=905
                     ->  Seq Scan on lineitem  (cost=0.00..1671914.45 rows=60224845 width=8) (actual time=0.049..13491.378 rows=60045303 loops=1)
                           Buffers: shared hit=359437 read=710229 dirtied=1065 written=900
                     ->  Hash  (cost=2969596.12..2969596.12 rows=7529968 width=39) (actual time=87312.814..87312.814 rows=99 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 7kB
                           Buffers: shared hit=670078 read=689147 written=5
                           ->  Hash Join  (cost=2185022.64..2969596.12 rows=7529968 width=39) (actual time=76421.743..87311.992 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=670078 read=689147 written=5
                                 ->  Hash Join  (cost=2115994.64..2749968.76 rows=7529968 width=20) (actual time=74770.049..85656.196 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=636578 read=687369 written=5
                                       ->  Seq Scan on orders  (cost=0.00..404880.36 rows=15059936 width=16) (actual time=0.015..5230.692 rows=15015000 loops=1)
                                             Buffers: shared hit=206935 read=47346 written=5
                                       ->  Hash  (cost=2064938.94..2064938.94 rows=4084456 width=4) (actual time=74587.301..74587.301 rows=99 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 4kB
                                             Buffers: shared hit=429643 read=640023
                                             ->  HashAggregate  (cost=1973038.68..2024094.38 rows=4084456 width=8) (actual time=65637.882..74586.402 rows=99 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 313::double precision)
                                                   Rows Removed by Filter: 15014901
                                                   Buffers: shared hit=429643 read=640023
                                                   ->  Seq Scan on lineitem  (cost=0.00..1671914.45 rows=60224845 width=8) (actual time=0.021..17922.174 rows=60045303 loops=1)
                                                         Buffers: shared hit=429643 read=640023
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1650.220..1650.220 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=33500 read=1778
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.012..635.097 rows=1500000 loops=1)
                                             Buffers: shared hit=33500 read=1778
 Total runtime: 112859.223 ms
(39 rows)

COMMIT;
COMMIT