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=10466377.32..10466380.07 rows=100 width=39) (actual time=219332.925..219333.218 rows=86 loops=1)
   Buffers: shared hit=1886433 read=568689 dirtied=832 written=4557
   ->  GroupAggregate  (cost=10466377.32..11303535.45 rows=30442114 width=39) (actual time=219332.922..219333.206 rows=86 loops=1)
         Buffers: shared hit=1886433 read=568689 dirtied=832 written=4557
         ->  Sort  (cost=10466377.32..10542482.60 rows=30442114 width=39) (actual time=219332.907..219332.948 rows=602 loops=1)
               Sort Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
               Sort Method: quicksort  Memory: 72kB
               Buffers: shared hit=1886433 read=568689 dirtied=832 written=4557
               ->  Hash Join  (cost=3094385.41..5850083.72 rows=30442114 width=39) (actual time=157499.659..219329.560 rows=602 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1886419 read=568689 dirtied=832 written=4557
                     ->  Seq Scan on lineitem  (cost=0.00..1690224.29 rows=60884229 width=8) (actual time=0.066..48239.731 rows=60044793 loops=1)
                           Buffers: shared hit=989153 read=92229
                     ->  Hash  (cost=2999229.91..2999229.91 rows=7612440 width=39) (actual time=155019.738..155019.738 rows=86 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 7kB
                           Buffers: shared hit=897266 read=476460 dirtied=832 written=4557
                           ->  Hash Join  (cost=2206537.13..2999229.91 rows=7612440 width=39) (actual time=130304.327..155019.025 rows=86 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=897266 read=476460 dirtied=832 written=4557
                                 ->  Hash Join  (cost=2137509.13..2777953.11 rows=7612440 width=20) (actual time=125863.804..150574.992 rows=86 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=895835 read=442613 dirtied=832 written=4557
                                       ->  Seq Scan on orders  (cost=0.00..409314.79 rows=15224879 width=16) (actual time=0.018..18593.360 rows=15015000 loops=1)
                                             Buffers: shared hit=149580 read=107486 dirtied=172 written=4164
                                       ->  Hash  (cost=2086486.39..2086486.39 rows=4081820 width=4) (actual time=125274.083..125274.083 rows=86 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 4kB
                                             Buffers: shared hit=746255 read=335127 dirtied=660 written=393
                                             ->  HashAggregate  (cost=1994645.44..2045668.19 rows=4081820 width=8) (actual time=116633.621..125273.079 rows=86 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 314::double precision)
                                                   Rows Removed by Filter: 15014914
                                                   Buffers: shared hit=746255 read=335127 dirtied=660 written=393
                                                   ->  Seq Scan on lineitem  (cost=0.00..1690224.29 rows=60884229 width=8) (actual time=0.016..61837.473 rows=60044793 loops=1)
                                                         Buffers: shared hit=746255 read=335127 dirtied=660 written=393
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=4438.469..4438.469 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=1431 read=33847
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.026..3066.010 rows=1500000 loops=1)
                                             Buffers: shared hit=1431 read=33847
 Total runtime: 219526.875 ms
(39 rows)

COMMIT;
COMMIT