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) > 315
	)
	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=10462625.05..10462627.80 rows=100 width=39) (actual time=225431.447..225431.709 rows=76 loops=1)
   Buffers: shared hit=1400160 read=1054051 dirtied=197 written=440
   ->  GroupAggregate  (cost=10462625.05..11299528.50 rows=30432853 width=39) (actual time=225431.442..225431.692 rows=76 loops=1)
         Buffers: shared hit=1400160 read=1054051 dirtied=197 written=440
         ->  Sort  (cost=10462625.05..10538707.18 rows=30432853 width=39) (actual time=225431.424..225431.459 rows=532 loops=1)
               Sort Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
               Sort Method: quicksort  Memory: 66kB
               Buffers: shared hit=1400160 read=1054051 dirtied=197 written=440
               ->  Hash Join  (cost=3092944.94..5847804.87 rows=30432853 width=39) (actual time=140904.929..225427.316 rows=532 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1400146 read=1054051 dirtied=197 written=440
                     ->  Seq Scan on lineitem  (cost=0.00..1689710.06 rows=60865706 width=8) (actual time=1.329..69719.844 rows=59984976 loops=1)
                           Buffers: shared hit=423837 read=657216 written=3
                     ->  Hash  (cost=2997883.09..2997883.09 rows=7604948 width=39) (actual time=139347.742..139347.742 rows=76 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 6kB
                           Buffers: shared hit=976309 read=396835 dirtied=197 written=437
                           ->  Hash Join  (cost=2205930.29..2997883.09 rows=7604948 width=39) (actual time=118892.782..139347.178 rows=76 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=976309 read=396835 dirtied=197 written=437
                                 ->  Hash Join  (cost=2136902.29..2776756.13 rows=7604948 width=20) (actual time=116499.552..136952.537 rows=76 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=941033 read=396833 dirtied=197 written=437
                                       ->  Seq Scan on orders  (cost=0.00..408911.95 rows=15209895 width=16) (actual time=0.018..14223.053 rows=15000000 loops=1)
                                             Buffers: shared hit=210472 read=46341
                                       ->  Hash  (cost=2085879.54..2085879.54 rows=4081820 width=4) (actual time=116279.755..116279.755 rows=76 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 3kB
                                             Buffers: shared hit=730561 read=350492 dirtied=197 written=437
                                             ->  HashAggregate  (cost=1994038.59..2045061.34 rows=4081820 width=8) (actual time=108282.673..116278.879 rows=76 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 315::double precision)
                                                   Rows Removed by Filter: 14999924
                                                   Buffers: shared hit=730561 read=350492 dirtied=197 written=437
                                                   ->  Seq Scan on lineitem  (cost=0.00..1689710.06 rows=60865706 width=8) (actual time=0.137..56631.204 rows=59984976 loops=1)
                                                         Buffers: shared hit=730561 read=350492 dirtied=197 written=437
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=2390.655..2390.655 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=35276 read=2
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.021..1558.422 rows=1500000 loops=1)
                                             Buffers: shared hit=35276 read=2
 Total runtime: 225624.042 ms
(39 rows)

COMMIT;
COMMIT