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=10154555.93..10154558.68 rows=100 width=39) (actual time=65089.881..65090.122 rows=84 loops=1)
   Buffers: shared hit=1665911 read=755851 dirtied=311
   ->  GroupAggregate  (cost=10154555.93..10980186.07 rows=30022914 width=39) (actual time=65089.877..65090.110 rows=84 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1665911 read=755851 dirtied=311
         ->  Sort  (cost=10154555.93..10229613.22 rows=30022914 width=39) (actual time=65089.855..65089.891 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=1665911 read=755851 dirtied=311
               ->  Hash Join  (cost=2887098.17..5604833.46 rows=30022914 width=39) (actual time=47854.669..65088.062 rows=588 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1665899 read=755851 dirtied=311
                     ->  Seq Scan on lineitem  (cost=0.00..1666933.29 rows=60045829 width=8) (actual time=0.015..10427.033 rows=60045669 loops=1)
                           Buffers: shared hit=740367 read=326108
                     ->  Hash  (cost=2793254.52..2793254.52 rows=7507492 width=39) (actual time=47451.707..47451.707 rows=84 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65542kB
                           Buffers: shared hit=925532 read=429743 dirtied=311
                           ->  Hash Join  (cost=2179669.96..2793254.52 rows=7507492 width=39) (actual time=40866.350..47451.224 rows=84 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=925532 read=429743 dirtied=311
                                 ->  Hash Join  (cost=2110641.96..2611614.14 rows=7507492 width=20) (actual time=39840.268..46424.839 rows=84 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=925530 read=394467 dirtied=311
                                       ->  Seq Scan on orders  (cost=0.00..403671.84 rows=15014984 width=16) (actual time=0.006..4076.620 rows=15015000 loops=1)
                                             Buffers: shared hit=1288 read=252234 dirtied=254
                                       ->  Hash  (cost=2059399.27..2059399.27 rows=4099415 width=4) (actual time=39675.241..39675.241 rows=84 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32771kB
                                             Buffers: shared hit=924242 read=142233 dirtied=57
                                             ->  HashAggregate  (cost=1967162.44..2018405.12 rows=4099415 width=8) (actual time=35302.613..39674.518 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=924242 read=142233 dirtied=57
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1666933.29 rows=60045829 width=8) (actual time=0.007..13011.066 rows=60045669 loops=1)
                                                         Buffers: shared hit=924242 read=142233 dirtied=57
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1018.844..1018.844 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=0.011..608.691 rows=1500000 loops=1)
                                             Buffers: shared hit=2 read=35276
 Planning time: 6.542 ms
 Execution time: 65140.878 ms
(42 rows)

COMMIT;
COMMIT