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=10411465.58..10411468.33 rows=100 width=39) (actual time=97718.255..97718.539 rows=85 loops=1)
   Buffers: shared hit=1091948 read=1351237 written=1
   ->  GroupAggregate  (cost=10411465.58..11244506.11 rows=30292383 width=39) (actual time=97718.251..97718.524 rows=85 loops=1)
         Buffers: shared hit=1091948 read=1351237 written=1
         ->  Sort  (cost=10411465.58..10487196.53 rows=30292383 width=39) (actual time=97718.232..97718.269 rows=595 loops=1)
               Sort Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
               Sort Method: quicksort  Memory: 71kB
               Buffers: shared hit=1091948 read=1351237 written=1
               ->  Hash Join  (cost=3076828.56..5818955.64 rows=30292383 width=39) (actual time=74891.140..97715.292 rows=595 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1091934 read=1351237 written=1
                     ->  Seq Scan on lineitem  (cost=0.00..1681893.66 rows=60584766 width=8) (actual time=0.094..12530.814 rows=60044176 loops=1)
                           Buffers: shared hit=422635 read=653411
                     ->  Hash  (cost=2982141.31..2982141.31 rows=7574980 width=39) (actual time=74432.563..74432.563 rows=85 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 6kB
                           Buffers: shared hit=669299 read=697826 written=1
                           ->  Hash Join  (cost=2193939.71..2982141.31 rows=7574980 width=39) (actual time=65455.282..74432.138 rows=85 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=669299 read=697826 written=1
                                 ->  Hash Join  (cost=2124911.71..2761613.71 rows=7574980 width=20) (actual time=64449.120..73422.846 rows=85 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=634021 read=697826 written=1
                                       ->  Seq Scan on orders  (cost=0.00..407300.59 rows=15149959 width=16) (actual time=0.009..4263.968 rows=15015000 loops=1)
                                             Buffers: shared hit=212716 read=43085 written=1
                                       ->  Hash  (cost=2074878.06..2074878.06 rows=4002692 width=4) (actual time=64325.515..64325.515 rows=85 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 3kB
                                             Buffers: shared hit=421305 read=654741
                                             ->  HashAggregate  (cost=1984817.49..2034851.14 rows=4002692 width=8) (actual time=55326.956..64324.533 rows=85 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 314::double precision)
                                                   Rows Removed by Filter: 15014915
                                                   Buffers: shared hit=421305 read=654741
                                                   ->  Seq Scan on lineitem  (cost=0.00..1681893.66 rows=60584766 width=8) (actual time=0.007..14734.834 rows=60044176 loops=1)
                                                         Buffers: shared hit=421305 read=654741
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1004.031..1004.031 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=0.015..521.341 rows=1500000 loops=1)
                                             Buffers: shared hit=35278
 Total runtime: 97945.191 ms
(39 rows)

COMMIT;
COMMIT