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=10352879.50..10352882.25 rows=100 width=39) (actual time=131376.799..131377.303 rows=99 loops=1)
   Buffers: shared hit=1171880 read=1257025 dirtied=16 written=3011
   ->  GroupAggregate  (cost=10352879.50..11180974.65 rows=30112551 width=39) (actual time=131376.795..131377.282 rows=99 loops=1)
         Buffers: shared hit=1171880 read=1257025 dirtied=16 written=3011
         ->  Sort  (cost=10352879.50..10428160.88 rows=30112551 width=39) (actual time=131376.766..131376.849 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=1171880 read=1257025 dirtied=16 written=3011
               ->  Hash Join  (cost=3063070.45..5788926.75 rows=30112551 width=39) (actual time=97933.554..131372.231 rows=693 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1171866 read=1257025 dirtied=16 written=3011
                     ->  Seq Scan on lineitem  (cost=0.00..1671917.02 rows=60225102 width=8) (actual time=0.050..19566.747 rows=60045303 loops=1)
                           Buffers: shared hit=394399 read=675267 written=2
                     ->  Hash  (cost=2968945.85..2968945.85 rows=7529968 width=39) (actual time=97452.314..97452.314 rows=99 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 7kB
                           Buffers: shared hit=777467 read=581758 dirtied=16 written=3009
                           ->  Hash Join  (cost=2184517.73..2968945.85 rows=7529968 width=39) (actual time=85957.130..97451.531 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=777467 read=581758 dirtied=16 written=3009
                                 ->  Hash Join  (cost=2115489.73..2749318.49 rows=7529968 width=20) (actual time=83575.401..95064.962 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=761075 read=562872 dirtied=16 written=3009
                                       ->  Seq Scan on orders  (cost=0.00..404880.36 rows=15059936 width=16) (actual time=0.019..5860.191 rows=15015000 loops=1)
                                             Buffers: shared hit=228267 read=26014 dirtied=16 written=3009
                                       ->  Hash  (cost=2064615.73..2064615.73 rows=4069920 width=4) (actual time=83418.756..83418.756 rows=99 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 4kB
                                             Buffers: shared hit=532808 read=536858
                                             ->  HashAggregate  (cost=1973042.53..2023916.53 rows=4069920 width=8) (actual time=74037.504..83417.889 rows=99 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 313::double precision)
                                                   Rows Removed by Filter: 15014901
                                                   Buffers: shared hit=532808 read=536858
                                                   ->  Seq Scan on lineitem  (cost=0.00..1671917.02 rows=60225102 width=8) (actual time=0.034..23732.902 rows=60045303 loops=1)
                                                         Buffers: shared hit=532808 read=536858
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=2379.528..2379.528 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=16392 read=18886
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.009..1484.681 rows=1500000 loops=1)
                                             Buffers: shared hit=16392 read=18886
 Total runtime: 131754.158 ms
(39 rows)

COMMIT;
COMMIT