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=10215100.49..10215103.24 rows=100 width=39) (actual time=86794.346..86794.643 rows=99 loops=1)
   Buffers: shared hit=1457943 read=978100 written=547
   ->  GroupAggregate  (cost=10215100.49..11045670.62 rows=30202550 width=39) (actual time=86794.342..86794.630 rows=99 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1457943 read=978100 written=547
         ->  Sort  (cost=10215100.49..10290606.87 rows=30202550 width=39) (actual time=86794.294..86794.327 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=1457943 read=978100 written=547
               ->  Hash Join  (cost=2902861.23..5636857.46 rows=30202550 width=39) (actual time=66227.120..86792.815 rows=693 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1457931 read=978100 written=547
                     ->  Seq Scan on lineitem  (cost=0.00..1676906.99 rows=60405099 width=8) (actual time=0.030..11350.665 rows=59984909 loops=1)
                           Buffers: shared hit=568124 read=504732 written=7
                     ->  Hash  (cost=2808455.30..2808455.30 rows=7552474 width=39) (actual time=66026.906..66026.906 rows=99 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65543kB
                           Buffers: shared hit=889807 read=473368 written=540
                           ->  Hash Join  (cost=2191440.01..2808455.30 rows=7552474 width=39) (actual time=57077.082..66025.297 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=889807 read=473368 written=540
                                 ->  Hash Join  (cost=2122412.01..2626140.19 rows=7552474 width=20) (actual time=55916.356..64860.546 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=880190 read=447707 written=540
                                       ->  Seq Scan on orders  (cost=0.00..406090.48 rows=15104948 width=16) (actual time=0.008..3157.504 rows=15000000 loops=1)
                                             Buffers: shared hit=217663 read=37378 written=532
                                       ->  Hash  (cost=2071169.32..2071169.32 rows=4099415 width=4) (actual time=55752.636..55752.636 rows=99 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32772kB
                                             Buffers: shared hit=662527 read=410329 written=8
                                             ->  HashAggregate  (cost=1978932.49..2030175.17 rows=4099415 width=8) (actual time=47744.613..55750.204 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=662527 read=410329 written=8
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1676906.99 rows=60405099 width=8) (actual time=0.017..13355.758 rows=59984909 loops=1)
                                                         Buffers: shared hit=662527 read=410329 written=8
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1144.761..1144.761 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=9617 read=25661
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.026..673.033 rows=1500000 loops=1)
                                             Buffers: shared hit=9617 read=25661
 Planning time: 4.366 ms
 Execution time: 87068.563 ms
(42 rows)

COMMIT;
COMMIT