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=10153234.02..10153236.77 rows=100 width=39) (actual time=66891.379..66891.621 rows=84 loops=1)
   Buffers: shared hit=1666606 read=755156 dirtied=307
   ->  GroupAggregate  (cost=10153234.02..10978856.18 rows=30022624 width=39) (actual time=66891.375..66891.606 rows=84 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1666606 read=755156 dirtied=307
         ->  Sort  (cost=10153234.02..10228290.58 rows=30022624 width=39) (actual time=66891.346..66891.378 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=1666606 read=755156 dirtied=307
               ->  Hash Join  (cost=2885840.84..5603560.16 rows=30022624 width=39) (actual time=50180.233..66889.825 rows=588 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1666594 read=755156 dirtied=307
                     ->  Seq Scan on lineitem  (cost=0.00..1666927.48 rows=60045248 width=8) (actual time=0.011..9772.507 rows=60045669 loops=1)
                           Buffers: shared hit=740193 read=326282
                     ->  Hash  (cost=2791997.19..2791997.19 rows=7507492 width=39) (actual time=49776.754..49776.754 rows=84 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65542kB
                           Buffers: shared hit=926401 read=428874 dirtied=307
                           ->  Hash Join  (cost=2178690.10..2791997.19 rows=7507492 width=39) (actual time=43499.142..49776.290 rows=84 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=926401 read=428874 dirtied=307
                                 ->  Hash Join  (cost=2109662.10..2610356.81 rows=7507492 width=20) (actual time=42433.931..48710.766 rows=84 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=926399 read=393598 dirtied=307
                                       ->  Seq Scan on orders  (cost=0.00..403671.84 rows=15014984 width=16) (actual time=0.009..3757.259 rows=15015000 loops=1)
                                             Buffers: shared hit=1129 read=252393 dirtied=254
                                       ->  Hash  (cost=2058766.25..2058766.25 rows=4071668 width=4) (actual time=42268.316..42268.316 rows=84 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32771kB
                                             Buffers: shared hit=925270 read=141205 dirtied=53
                                             ->  HashAggregate  (cost=1967153.72..2018049.57 rows=4071668 width=8) (actual time=37217.542..42267.491 rows=84 loops=1)
                                                   Group Key: lineitem_1.l_orderkey
                                                   Filter: (sum(lineitem_1.l_quantity) > 314::double precision)
                                                   Rows Removed by Filter: 15014916
                                                   Buffers: shared hit=925270 read=141205 dirtied=53
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1666927.48 rows=60045248 width=8) (actual time=0.028..12345.762 rows=60045669 loops=1)
                                                         Buffers: shared hit=925270 read=141205 dirtied=53
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1054.710..1054.710 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=2 read=35276
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.012..643.852 rows=1500000 loops=1)
                                             Buffers: shared hit=2 read=35276
 Planning time: 4.071 ms
 Execution time: 67056.788 ms
(42 rows)

COMMIT;
COMMIT