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=10404591.11..10404593.86 rows=100 width=39) (actual time=216258.733..216259.246 rows=85 loops=1)
   Buffers: shared hit=1676733 read=764059 written=91
   ->  GroupAggregate  (cost=10404591.11..11236790.01 rows=30261778 width=39) (actual time=216258.728..216259.230 rows=85 loops=1)
         Buffers: shared hit=1676733 read=764059 written=91
         ->  Sort  (cost=10404591.11..10480245.56 rows=30261778 width=39) (actual time=216258.708..216258.780 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=1676733 read=764059 written=91
               ->  Hash Join  (cost=3077567.55..5816941.38 rows=30261778 width=39) (actual time=144076.172..216254.656 rows=595 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1676719 read=764059 written=91
                     ->  Seq Scan on lineitem  (cost=0.00..1680211.57 rows=60523557 width=8) (actual time=0.072..56687.014 rows=60044082 loops=1)
                           Buffers: shared hit=771032 read=303944
                     ->  Hash  (cost=2982973.95..2982973.95 rows=7567488 width=39) (actual time=143939.438..143939.438 rows=85 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 6kB
                           Buffers: shared hit=905687 read=460115 written=91
                           ->  Hash Join  (cost=2194721.06..2982973.95 rows=7567488 width=39) (actual time=125847.669..143938.774 rows=85 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=905687 read=460115 written=91
                                 ->  Hash Join  (cost=2125693.06..2762596.19 rows=7567488 width=20) (actual time=121516.759..139605.409 rows=85 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=905685 read=424839
                                       ->  Seq Scan on orders  (cost=0.00..406897.75 rows=15134975 width=16) (actual time=0.018..12019.385 rows=15015000 loops=1)
                                             Buffers: shared hit=254222 read=1326
                                       ->  Hash  (cost=2074670.31..2074670.31 rows=4081820 width=4) (actual time=121167.311..121167.311 rows=85 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 3kB
                                             Buffers: shared hit=651463 read=423513
                                             ->  HashAggregate  (cost=1982829.36..2033852.11 rows=4081820 width=8) (actual time=112804.485..121166.221 rows=85 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 314::double precision)
                                                   Rows Removed by Filter: 15014915
                                                   Buffers: shared hit=651463 read=423513
                                                   ->  Seq Scan on lineitem  (cost=0.00..1680211.57 rows=60523557 width=8) (actual time=0.019..57826.724 rows=60044082 loops=1)
                                                         Buffers: shared hit=651463 read=423513
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=4327.894..4327.894 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=2 read=35276 written=91
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.028..3372.968 rows=1500000 loops=1)
                                             Buffers: shared hit=2 read=35276 written=91
 Total runtime: 216498.978 ms
(39 rows)

COMMIT;
COMMIT