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=10193692.40..10193695.15 rows=100 width=39) (actual time=79465.239..79465.541 rows=99 loops=1)
   Buffers: shared hit=1341004 read=1090300 dirtied=1
   ->  GroupAggregate  (cost=10193692.40..11022616.35 rows=30142689 width=39) (actual time=79465.236..79465.528 rows=99 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1341004 read=1090300 dirtied=1
         ->  Sort  (cost=10193692.40..10269049.12 rows=30142689 width=39) (actual time=79465.207..79465.245 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=1341004 read=1090300 dirtied=1
               ->  Hash Join  (cost=2896368.03..5624955.92 rows=30142689 width=39) (actual time=58793.095..79463.440 rows=693 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1340992 read=1090300 dirtied=1
                     ->  Seq Scan on lineitem  (cost=0.00..1673593.78 rows=60285378 width=8) (actual time=0.037..10542.289 rows=59986308 loops=1)
                           Buffers: shared hit=461087 read=609653
                     ->  Hash  (cost=2802149.78..2802149.78 rows=7537460 width=39) (actual time=58631.338..58631.338 rows=99 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65543kB
                           Buffers: shared hit=879905 read=480647 dirtied=1
                           ->  Hash Join  (cost=2186557.05..2802149.78 rows=7537460 width=39) (actual time=50218.615..58626.419 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=879905 read=480647 dirtied=1
                                 ->  Hash Join  (cost=2117529.05..2620059.88 rows=7537460 width=20) (actual time=49324.033..57724.827 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=844627 read=480647 dirtied=1
                                       ->  Seq Scan on orders  (cost=0.00..405283.20 rows=15074920 width=16) (actual time=0.011..3138.099 rows=15000000 loops=1)
                                             Buffers: shared hit=190166 read=64368
                                       ->  Hash  (cost=2066633.20..2066633.20 rows=4071668 width=4) (actual time=49081.318..49081.318 rows=99 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32772kB
                                             Buffers: shared hit=654461 read=416279 dirtied=1
                                             ->  HashAggregate  (cost=1975020.67..2025916.52 rows=4071668 width=8) (actual time=42553.078..49079.390 rows=99 loops=1)
                                                   Group Key: lineitem_1.l_orderkey
                                                   Filter: (sum(lineitem_1.l_quantity) > 313::double precision)
                                                   Rows Removed by Filter: 14999901
                                                   Buffers: shared hit=654461 read=416279 dirtied=1
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1673593.78 rows=60285378 width=8) (actual time=0.028..12239.490 rows=59986308 loops=1)
                                                         Buffers: shared hit=654461 read=416279 dirtied=1
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=848.738..848.738 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=35278
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.039..455.223 rows=1500000 loops=1)
                                             Buffers: shared hit=35278
 Planning time: 3.834 ms
 Execution time: 79688.867 ms
(42 rows)

COMMIT;
COMMIT