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=10151768.36..10151771.11 rows=100 width=39) (actual time=79872.345..79872.627 rows=99 loops=1)
   Buffers: shared hit=1664653 read=757109 dirtied=316 written=3
   ->  GroupAggregate  (cost=10151768.36..10977390.85 rows=30022636 width=39) (actual time=79872.341..79872.612 rows=99 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1664653 read=757109 dirtied=316 written=3
         ->  Sort  (cost=10151768.36..10226824.95 rows=30022636 width=39) (actual time=79872.320..79872.353 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=1664653 read=757109 dirtied=316 written=3
               ->  Hash Join  (cost=2884372.94..5602092.92 rows=30022636 width=39) (actual time=60670.924..79870.459 rows=693 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1664641 read=757109 dirtied=316 written=3
                     ->  Seq Scan on lineitem  (cost=0.00..1666927.72 rows=60045272 width=8) (actual time=0.017..11163.731 rows=60045669 loops=1)
                           Buffers: shared hit=740267 read=326208
                     ->  Hash  (cost=2790529.29..2790529.29 rows=7507492 width=39) (actual time=60200.372..60200.372 rows=99 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65543kB
                           Buffers: shared hit=924374 read=430901 dirtied=316 written=3
                           ->  Hash Join  (cost=2177548.48..2790529.29 rows=7507492 width=39) (actual time=52577.567..60199.744 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=924374 read=430901 dirtied=316 written=3
                                 ->  Hash Join  (cost=2108520.48..2608888.91 rows=7507492 width=20) (actual time=51461.778..59083.556 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=924372 read=395625 dirtied=316 written=3
                                       ->  Seq Scan on orders  (cost=0.00..403671.84 rows=15014984 width=16) (actual time=0.007..3952.931 rows=15015000 loops=1)
                                             Buffers: shared hit=1532 read=251990 dirtied=254
                                       ->  Hash  (cost=2058032.48..2058032.48 rows=4039040 width=4) (actual time=51256.369..51256.369 rows=99 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32772kB
                                             Buffers: shared hit=922840 read=143635 dirtied=62 written=3
                                             ->  HashAggregate  (cost=1967154.08..2017642.08 rows=4039040 width=8) (actual time=42838.857..51255.312 rows=99 loops=1)
                                                   Group Key: lineitem_1.l_orderkey
                                                   Filter: (sum(lineitem_1.l_quantity) > 313::double precision)
                                                   Rows Removed by Filter: 15014901
                                                   Buffers: shared hit=922840 read=143635 dirtied=62 written=3
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1666927.72 rows=60045272 width=8) (actual time=0.007..13653.424 rows=60045669 loops=1)
                                                         Buffers: shared hit=922840 read=143635 dirtied=62 written=3
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1092.643..1092.643 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=0.032..648.747 rows=1500000 loops=1)
                                             Buffers: shared hit=2 read=35276
 Planning time: 3.951 ms
 Execution time: 80202.049 ms
(42 rows)

COMMIT;
COMMIT