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=10370397.19..10370399.94 rows=100 width=39) (actual time=95914.595..95914.926 rows=99 loops=1)
   Buffers: shared hit=667209 read=1766444 dirtied=1066 written=5600
   ->  GroupAggregate  (cost=10370397.19..11200149.05 rows=30172795 width=39) (actual time=95914.590..95914.911 rows=99 loops=1)
         Buffers: shared hit=667209 read=1766444 dirtied=1066 written=5600
         ->  Sort  (cost=10370397.19..10445829.17 rows=30172795 width=39) (actual time=95914.570..95914.611 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=667209 read=1766444 dirtied=1066 written=5600
               ->  Hash Join  (cost=3065579.26..5796880.97 rows=30172795 width=39) (actual time=74835.738..95911.339 rows=693 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=667195 read=1766444 dirtied=1066 written=5600
                     ->  Seq Scan on lineitem  (cost=0.00..1675253.90 rows=60345590 width=8) (actual time=0.048..11728.045 rows=59986308 loops=1)
                           Buffers: shared hit=93801 read=977997 dirtied=1066 written=1065
                     ->  Hash  (cost=2971275.51..2971275.51 rows=7544300 width=39) (actual time=74164.660..74164.660 rows=99 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 7kB
                           Buffers: shared hit=573394 read=788447 written=4535
                           ->  Hash Join  (cost=2186104.07..2971275.51 rows=7544300 width=39) (actual time=65683.889..74164.150 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=573394 read=788447 written=4535
                                 ->  Hash Join  (cost=2117076.07..2751361.51 rows=7544300 width=20) (actual time=64301.897..72779.123 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=573391 read=753172 written=2
                                       ->  Seq Scan on orders  (cost=0.00..405651.01 rows=15088601 width=16) (actual time=0.011..4028.720 rows=15000000 loops=1)
                                             Buffers: shared hit=254765
                                       ->  Hash  (cost=2067042.42..2067042.42 rows=4002692 width=4) (actual time=64163.741..64163.741 rows=99 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 4kB
                                             Buffers: shared hit=318626 read=753172 written=2
                                             ->  HashAggregate  (cost=1976981.85..2027015.50 rows=4002692 width=8) (actual time=55545.255..64162.909 rows=99 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 313::double precision)
                                                   Rows Removed by Filter: 14999901
                                                   Buffers: shared hit=318626 read=753172 written=2
                                                   ->  Seq Scan on lineitem  (cost=0.00..1675253.90 rows=60345590 width=8) (actual time=0.018..14816.229 rows=59986308 loops=1)
                                                         Buffers: shared hit=318626 read=753172 written=2
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1380.281..1380.281 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=3 read=35275 written=4533
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.006..736.052 rows=1500000 loops=1)
                                             Buffers: shared hit=3 read=35275 written=4533
 Total runtime: 96127.036 ms
(39 rows)

COMMIT;
COMMIT