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=10353502.24..10353504.99 rows=100 width=39) (actual time=112704.835..112705.461 rows=99 loops=1)
   Buffers: shared hit=1337979 read=1090926 dirtied=1 written=56
   ->  GroupAggregate  (cost=10353502.24..11181593.84 rows=30112422 width=39) (actual time=112704.831..112705.441 rows=99 loops=1)
         Buffers: shared hit=1337979 read=1090926 dirtied=1 written=56
         ->  Sort  (cost=10353502.24..10428783.29 rows=30112422 width=39) (actual time=112704.803..112704.896 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=1337979 read=1090926 dirtied=1 written=56
               ->  Hash Join  (cost=3063720.72..5789569.95 rows=30112422 width=39) (actual time=85518.327..112699.515 rows=693 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1337965 read=1090926 dirtied=1 written=56
                     ->  Seq Scan on lineitem  (cost=0.00..1671914.45 rows=60224845 width=8) (actual time=0.047..14773.220 rows=60045303 loops=1)
                           Buffers: shared hit=454545 read=615121
                     ->  Hash  (cost=2969596.12..2969596.12 rows=7529968 width=39) (actual time=85270.600..85270.600 rows=99 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 7kB
                           Buffers: shared hit=883420 read=475805 dirtied=1 written=56
                           ->  Hash Join  (cost=2185022.64..2969596.12 rows=7529968 width=39) (actual time=75698.835..85270.163 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=883420 read=475805 dirtied=1 written=56
                                 ->  Hash Join  (cost=2115994.64..2749968.76 rows=7529968 width=20) (actual time=73583.925..83153.006 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=883418 read=440529 dirtied=1 written=56
                                       ->  Seq Scan on orders  (cost=0.00..404880.36 rows=15059936 width=16) (actual time=0.014..4403.249 rows=15015000 loops=1)
                                             Buffers: shared hit=239179 read=15102 written=47
                                       ->  Hash  (cost=2064938.94..2064938.94 rows=4084456 width=4) (actual time=73419.473..73419.473 rows=99 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 4kB
                                             Buffers: shared hit=644239 read=425427 dirtied=1 written=9
                                             ->  HashAggregate  (cost=1973038.68..2024094.38 rows=4084456 width=8) (actual time=63996.541..73418.790 rows=99 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 313::double precision)
                                                   Rows Removed by Filter: 15014901
                                                   Buffers: shared hit=644239 read=425427 dirtied=1 written=9
                                                   ->  Seq Scan on lineitem  (cost=0.00..1671914.45 rows=60224845 width=8) (actual time=0.044..17708.527 rows=60045303 loops=1)
                                                         Buffers: shared hit=644239 read=425427 dirtied=1 written=9
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=2112.934..2112.934 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=2 read=35276
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.015..1065.987 rows=1500000 loops=1)
                                             Buffers: shared hit=2 read=35276
 Total runtime: 112962.451 ms
(39 rows)

COMMIT;
COMMIT