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=10149706.53..10149709.28 rows=100 width=39) (actual time=93716.833..93717.175 rows=99 loops=1)
   Buffers: shared hit=1682992 read=738770 written=3014
   ->  GroupAggregate  (cost=10149706.53..10975334.74 rows=30022844 width=39) (actual time=93716.830..93717.152 rows=99 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1682992 read=738770 written=3014
         ->  Sort  (cost=10149706.53..10224763.64 rows=30022844 width=39) (actual time=93716.803..93716.855 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=1682992 read=738770 written=3014
               ->  Hash Join  (cost=2882265.32..5599996.76 rows=30022844 width=39) (actual time=70270.289..93715.099 rows=693 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1682980 read=738770 written=3014
                     ->  Seq Scan on lineitem  (cost=0.00..1666931.89 rows=60045689 width=8) (actual time=0.042..12670.975 rows=59985329 loops=1)
                           Buffers: shared hit=643768 read=422707 written=1
                     ->  Hash  (cost=2788421.67..2788421.67 rows=7507492 width=39) (actual time=69771.256..69771.256 rows=99 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65543kB
                           Buffers: shared hit=1039212 read=316063 written=3013
                           ->  Hash Join  (cost=2175910.61..2788421.67 rows=7507492 width=39) (actual time=60617.200..69770.514 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=1039212 read=316063 written=3013
                                 ->  Hash Join  (cost=2106882.61..2606781.29 rows=7507492 width=20) (actual time=59357.978..68504.063 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=1003958 read=316039 written=3013
                                       ->  Seq Scan on orders  (cost=0.00..403671.84 rows=15014984 width=16) (actual time=0.012..3840.274 rows=15000000 loops=1)
                                             Buffers: shared hit=167287 read=86235 written=3009
                                       ->  Hash  (cost=2056981.80..2056981.80 rows=3992065 width=4) (actual time=59180.306..59180.306 rows=99 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32772kB
                                             Buffers: shared hit=836671 read=229804 written=4
                                             ->  HashAggregate  (cost=1967160.33..2017061.15 rows=3992065 width=8) (actual time=48525.629..59179.468 rows=99 loops=1)
                                                   Group Key: lineitem_1.l_orderkey
                                                   Filter: (sum(lineitem_1.l_quantity) > 313::double precision)
                                                   Rows Removed by Filter: 14999901
                                                   Buffers: shared hit=836671 read=229804 written=4
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1666931.89 rows=60045689 width=8) (actual time=0.013..14802.932 rows=59985329 loops=1)
                                                         Buffers: shared hit=836671 read=229804 written=4
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1249.988..1249.988 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=35254 read=24
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.029..608.820 rows=1500000 loops=1)
                                             Buffers: shared hit=35254 read=24
 Planning time: 3.864 ms
 Execution time: 93868.883 ms
(42 rows)

COMMIT;
COMMIT