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=10177591.19..10177593.94 rows=100 width=39) (actual time=109376.314..109376.589 rows=84 loops=1)
   Buffers: shared hit=1419902 read=1007228 written=18
   ->  GroupAggregate  (cost=10177591.19..11005098.64 rows=30091180 width=39) (actual time=109376.310..109376.572 rows=84 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1419902 read=1007228 written=18
         ->  Sort  (cost=10177591.19..10252819.14 rows=30091180 width=39) (actual time=109376.288..109376.329 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=1419902 read=1007228 written=18
               ->  Hash Join  (cost=2893110.83..5617031.73 rows=30091180 width=39) (actual time=84888.289..109374.758 rows=588 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1419890 read=1007228 written=18
                     ->  Seq Scan on lineitem  (cost=0.00..1670729.60 rows=60182360 width=8) (actual time=0.031..14383.628 rows=59985653 loops=1)
                           Buffers: shared hit=548385 read=520521
                     ->  Hash  (cost=2799079.88..2799079.88 rows=7522476 width=39) (actual time=84692.734..84692.734 rows=84 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65542kB
                           Buffers: shared hit=871505 read=486707 written=18
                           ->  Hash Join  (cost=2184307.26..2799079.88 rows=7522476 width=39) (actual time=74998.519..84692.100 rows=84 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=871505 read=486707 written=18
                                 ->  Hash Join  (cost=2115279.26..2617214.74 rows=7522476 width=20) (actual time=73145.854..82831.965 rows=84 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=836228 read=486706 written=18
                                       ->  Seq Scan on orders  (cost=0.00..404477.52 rows=15044952 width=16) (actual time=0.016..3965.472 rows=15000000 loops=1)
                                             Buffers: shared hit=211197 read=42831 written=12
                                       ->  Hash  (cost=2063980.03..2063980.03 rows=4103939 width=4) (actual time=72937.195..72937.195 rows=84 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32771kB
                                             Buffers: shared hit=625031 read=443875 written=6
                                             ->  HashAggregate  (cost=1971641.40..2022940.64 rows=4103939 width=8) (actual time=63503.027..72936.408 rows=84 loops=1)
                                                   Group Key: lineitem_1.l_orderkey
                                                   Filter: (sum(lineitem_1.l_quantity) > 314::double precision)
                                                   Rows Removed by Filter: 14999916
                                                   Buffers: shared hit=625031 read=443875 written=6
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1670729.60 rows=60182360 width=8) (actual time=0.017..16837.186 rows=59985653 loops=1)
                                                         Buffers: shared hit=625031 read=443875 written=6
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1830.466..1830.466 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=35277 read=1
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.020..959.515 rows=1500000 loops=1)
                                             Buffers: shared hit=35277 read=1
 Planning time: 6.360 ms
 Execution time: 109602.843 ms
(42 rows)

COMMIT;
COMMIT