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=10226846.98..10226849.73 rows=100 width=39) (actual time=73970.946..73971.204 rows=84 loops=1)
   Buffers: shared hit=1575375 read=863046 written=84
   ->  GroupAggregate  (cost=10226846.98..11058238.97 rows=30232436 width=39) (actual time=73970.942..73971.188 rows=84 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1575375 read=863046 written=84
         ->  Sort  (cost=10226846.98..10302428.07 rows=30232436 width=39) (actual time=73970.927..73970.964 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=1575375 read=863046 written=84
               ->  Hash Join  (cost=2907157.70..5643859.70 rows=30232436 width=39) (actual time=55251.330..73969.724 rows=588 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1575363 read=863046 written=84
                     ->  Seq Scan on lineitem  (cost=0.00..1678566.72 rows=60464872 width=8) (actual time=0.022..10114.288 rows=60044664 loops=1)
                           Buffers: shared hit=680561 read=393357
                     ->  Hash  (cost=2812657.75..2812657.75 rows=7559996 width=39) (actual time=54669.696..54669.696 rows=84 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65542kB
                           Buffers: shared hit=894802 read=469689 written=84
                           ->  Hash Join  (cost=2194697.63..2812657.75 rows=7559996 width=39) (actual time=49072.225..54669.518 rows=84 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=894802 read=469689 written=84
                                 ->  Hash Join  (cost=2125669.63..2630229.81 rows=7559996 width=20) (actual time=48004.447..53601.496 rows=84 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=881983 read=447230 written=6
                                       ->  Seq Scan on orders  (cost=0.00..406494.91 rows=15119991 width=16) (actual time=0.009..2695.450 rows=15015000 loops=1)
                                             Buffers: shared hit=255295
                                       ->  Hash  (cost=2073963.00..2073963.00 rows=4136530 width=4) (actual time=47887.083..47887.083 rows=84 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32771kB
                                             Buffers: shared hit=626688 read=447230 written=6
                                             ->  HashAggregate  (cost=1980891.08..2032597.70 rows=4136530 width=8) (actual time=40286.365..47886.441 rows=84 loops=1)
                                                   Group Key: lineitem_1.l_orderkey
                                                   Filter: (sum(lineitem_1.l_quantity) > 314::double precision)
                                                   Rows Removed by Filter: 15014916
                                                   Buffers: shared hit=626688 read=447230 written=6
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1678566.72 rows=60464872 width=8) (actual time=0.012..12186.704 rows=60044664 loops=1)
                                                         Buffers: shared hit=626688 read=447230 written=6
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1052.263..1052.263 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=12819 read=22459 written=78
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.015..582.147 rows=1500000 loops=1)
                                             Buffers: shared hit=12819 read=22459 written=78
 Planning time: 3.788 ms
 Execution time: 74204.337 ms
(42 rows)

COMMIT;
COMMIT