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=10188704.15..10188706.90 rows=100 width=39) (actual time=107280.264..107280.598 rows=99 loops=1)
   Buffers: shared hit=1593308 read=836433 written=1670
   ->  GroupAggregate  (cost=10188704.15..11017124.33 rows=30124370 width=39) (actual time=107280.261..107280.586 rows=99 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1593308 read=836433 written=1670
         ->  Sort  (cost=10188704.15..10264015.08 rows=30124370 width=39) (actual time=107280.228..107280.276 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=1593308 read=836433 written=1670
               ->  Hash Join  (cost=2895950.61..5622875.98 rows=30124370 width=39) (actual time=82046.280..107278.711 rows=693 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1593296 read=836433 written=1670
                     ->  Seq Scan on lineitem  (cost=0.00..1672572.41 rows=60248741 width=8) (actual time=0.047..13501.706 rows=59985781 loops=1)
                           Buffers: shared hit=758075 read=312010
                     ->  Hash  (cost=2801826.01..2801826.01 rows=7529968 width=39) (actual time=81957.830..81957.830 rows=99 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65543kB
                           Buffers: shared hit=835221 read=524423 written=1670
                           ->  Hash Join  (cost=2186481.98..2801826.01 rows=7529968 width=39) (actual time=72175.912..81954.701 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=835221 read=524423 written=1670
                                 ->  Hash Join  (cost=2117453.98..2619848.49 rows=7529968 width=20) (actual time=70584.637..80357.077 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=835219 read=489147 written=15
                                       ->  Seq Scan on orders  (cost=0.00..404880.36 rows=15059936 width=16) (actual time=0.016..3813.793 rows=15000000 loops=1)
                                             Buffers: shared hit=207140 read=47141 written=8
                                       ->  Hash  (cost=2066154.74..2066154.74 rows=4103939 width=4) (actual time=70365.917..70365.917 rows=99 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32772kB
                                             Buffers: shared hit=628079 read=442006 written=7
                                             ->  HashAggregate  (cost=1973816.12..2025115.35 rows=4103939 width=8) (actual time=57886.724..70363.013 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=628079 read=442006 written=7
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1672572.41 rows=60248741 width=8) (actual time=0.048..16490.334 rows=59985781 loops=1)
                                                         Buffers: shared hit=628079 read=442006 written=7
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1439.959..1439.959 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=2 read=35276 written=1655
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.038..916.011 rows=1500000 loops=1)
                                             Buffers: shared hit=2 read=35276 written=1655
 Planning time: 5.627 ms
 Execution time: 107733.960 ms
(42 rows)

COMMIT;
COMMIT