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) > 315
	)
	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=10454329.83..10454332.58 rows=100 width=39) (actual time=132334.673..132334.929 rows=76 loops=1)
   Buffers: shared hit=1421802 read=1030941 written=19
   ->  GroupAggregate  (cost=10454329.83..11290680.18 rows=30412740 width=39) (actual time=132334.669..132334.911 rows=76 loops=1)
         Buffers: shared hit=1421802 read=1030941 written=19
         ->  Sort  (cost=10454329.83..10530361.68 rows=30412740 width=39) (actual time=132334.649..132334.680 rows=532 loops=1)
               Sort Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
               Sort Method: quicksort  Memory: 66kB
               Buffers: shared hit=1421802 read=1030941 written=19
               ->  Hash Join  (cost=3089684.46..5842704.14 rows=30412740 width=39) (actual time=96896.802..132331.840 rows=532 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1421788 read=1030941 written=19
                     ->  Seq Scan on lineitem  (cost=0.00..1688573.79 rows=60825479 width=8) (actual time=0.062..21577.909 rows=60045033 loops=1)
                           Buffers: shared hit=424633 read=655686
                     ->  Hash  (cost=2994622.61..2994622.61 rows=7604948 width=39) (actual time=96381.063..96381.063 rows=76 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 6kB
                           Buffers: shared hit=997155 read=375255 written=19
                           ->  Hash Join  (cost=2203097.16..2994622.61 rows=7604948 width=39) (actual time=85235.956..96380.346 rows=76 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=997155 read=375255 written=19
                                 ->  Hash Join  (cost=2134069.16..2773495.65 rows=7604948 width=20) (actual time=83610.725..94750.129 rows=76 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=997152 read=339980 written=19
                                       ->  Seq Scan on orders  (cost=0.00..408911.95 rows=15209895 width=16) (actual time=0.009..5981.366 rows=15015000 loops=1)
                                             Buffers: shared hit=226169 read=30644 written=6
                                       ->  Hash  (cost=2083580.60..2083580.60 rows=4039085 width=4) (actual time=83500.608..83500.608 rows=76 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 3kB
                                             Buffers: shared hit=770983 read=309336 written=13
                                             ->  HashAggregate  (cost=1992701.19..2043189.75 rows=4039085 width=8) (actual time=74919.737..83499.831 rows=76 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 315::double precision)
                                                   Rows Removed by Filter: 15014924
                                                   Buffers: shared hit=770983 read=309336 written=13
                                                   ->  Seq Scan on lineitem  (cost=0.00..1688573.79 rows=60825479 width=8) (actual time=0.015..22453.936 rows=60045033 loops=1)
                                                         Buffers: shared hit=770983 read=309336 written=13
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1623.019..1623.019 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=3 read=35275
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.030..965.325 rows=1500000 loops=1)
                                             Buffers: shared hit=3 read=35275
 Total runtime: 132559.063 ms
(39 rows)

COMMIT;
COMMIT