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=10149706.53..10149709.28 rows=100 width=39) (actual time=62122.398..62122.645 rows=84 loops=1)
   Buffers: shared hit=1665385 read=756377 dirtied=316
   ->  GroupAggregate  (cost=10149706.53..10975334.74 rows=30022844 width=39) (actual time=62122.395..62122.630 rows=84 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1665385 read=756377 dirtied=316
         ->  Sort  (cost=10149706.53..10224763.64 rows=30022844 width=39) (actual time=62122.379..62122.409 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=1665385 read=756377 dirtied=316
               ->  Hash Join  (cost=2882265.32..5599996.76 rows=30022844 width=39) (actual time=45743.756..62120.840 rows=588 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1665373 read=756377 dirtied=316
                     ->  Seq Scan on lineitem  (cost=0.00..1666931.89 rows=60045689 width=8) (actual time=0.018..9576.321 rows=60045669 loops=1)
                           Buffers: shared hit=740197 read=326278
                     ->  Hash  (cost=2788421.67..2788421.67 rows=7507492 width=39) (actual time=45352.160..45352.160 rows=84 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65542kB
                           Buffers: shared hit=925176 read=430099 dirtied=316
                           ->  Hash Join  (cost=2175910.61..2788421.67 rows=7507492 width=39) (actual time=39529.126..45351.708 rows=84 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=925176 read=430099 dirtied=316
                                 ->  Hash Join  (cost=2106882.61..2606781.29 rows=7507492 width=20) (actual time=38587.479..44409.705 rows=84 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=925174 read=394823 dirtied=316
                                       ->  Seq Scan on orders  (cost=0.00..403671.84 rows=15014984 width=16) (actual time=0.004..3311.186 rows=15015000 loops=1)
                                             Buffers: shared hit=1361 read=252161 dirtied=254
                                       ->  Hash  (cost=2056981.80..2056981.80 rows=3992065 width=4) (actual time=38437.427..38437.427 rows=84 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32771kB
                                             Buffers: shared hit=923813 read=142662 dirtied=62
                                             ->  HashAggregate  (cost=1967160.33..2017061.15 rows=3992065 width=8) (actual time=33709.285..38436.720 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=923813 read=142662 dirtied=62
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1666931.89 rows=60045689 width=8) (actual time=0.010..11411.627 rows=60045669 loops=1)
                                                         Buffers: shared hit=923813 read=142662 dirtied=62
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=932.536..932.536 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=0.009..533.005 rows=1500000 loops=1)
                                             Buffers: shared hit=2 read=35276
 Planning time: 7.285 ms
 Execution time: 62169.670 ms
(42 rows)

COMMIT;
COMMIT