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=10374500.96..10374503.71 rows=100 width=39) (actual time=120971.150..120971.425 rows=84 loops=1)
   Buffers: shared hit=1487152 read=946523 written=1
   ->  GroupAggregate  (cost=10374500.96..11204241.88 rows=30172397 width=39) (actual time=120971.147..120971.414 rows=84 loops=1)
         Buffers: shared hit=1487152 read=946523 written=1
         ->  Sort  (cost=10374500.96..10449931.95 rows=30172397 width=39) (actual time=120971.126..120971.166 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=1487152 read=946523 written=1
               ->  Hash Join  (cost=3069767.73..5801047.56 rows=30172397 width=39) (actual time=89156.972..120968.144 rows=588 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1487138 read=946523 written=1
                     ->  Seq Scan on lineitem  (cost=0.00..1675245.94 rows=60344794 width=8) (actual time=0.031..18442.538 rows=60045826 loops=1)
                           Buffers: shared hit=669866 read=401932
                     ->  Hash  (cost=2975455.83..2975455.83 rows=7544952 width=39) (actual time=89044.962..89044.962 rows=84 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 6kB
                           Buffers: shared hit=817272 read=544591 written=1
                           ->  Hash Join  (cost=2189302.72..2975455.83 rows=7544952 width=39) (actual time=79329.362..89044.532 rows=84 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=817272 read=544591 written=1
                                 ->  Hash Join  (cost=2120274.72..2755528.79 rows=7544952 width=20) (actual time=77577.064..87290.259 rows=84 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=781994 read=544591 written=1
                                       ->  Seq Scan on orders  (cost=0.00..405686.04 rows=15089904 width=16) (actual time=0.016..4579.701 rows=15015000 loops=1)
                                             Buffers: shared hit=254787
                                       ->  Hash  (cost=2069094.43..2069094.43 rows=4094423 width=4) (actual time=77400.233..77400.233 rows=84 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 3kB
                                             Buffers: shared hit=527207 read=544591 written=1
                                             ->  HashAggregate  (cost=1976969.91..2028150.20 rows=4094423 width=8) (actual time=68100.521..77399.634 rows=84 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 314::double precision)
                                                   Rows Removed by Filter: 15014916
                                                   Buffers: shared hit=527207 read=544591 written=1
                                                   ->  Seq Scan on lineitem  (cost=0.00..1675245.94 rows=60344794 width=8) (actual time=0.017..19625.177 rows=60045826 loops=1)
                                                         Buffers: shared hit=527207 read=544591 written=1
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1750.227..1750.227 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=35278
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.014..902.526 rows=1500000 loops=1)
                                             Buffers: shared hit=35278
 Total runtime: 121187.765 ms
(39 rows)

COMMIT;
COMMIT