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=10445914.58..10445917.33 rows=100 width=39) (actual time=239035.994..239036.470 rows=86 loops=1)
   Buffers: shared hit=1049407 read=1400969 dirtied=1 written=1
   ->  GroupAggregate  (cost=10445914.58..11281431.52 rows=30382434 width=39) (actual time=239035.990..239036.449 rows=86 loops=1)
         Buffers: shared hit=1049407 read=1400969 dirtied=1 written=1
         ->  Sort  (cost=10445914.58..10521870.67 rows=30382434 width=39) (actual time=239035.967..239036.039 rows=602 loops=1)
               Sort Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
               Sort Method: quicksort  Memory: 72kB
               Buffers: shared hit=1049407 read=1400969 dirtied=1 written=1
               ->  Hash Join  (cost=3088807.75..5839103.67 rows=30382434 width=39) (actual time=158536.846..239031.562 rows=602 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1049393 read=1400969 dirtied=1 written=1
                     ->  Seq Scan on lineitem  (cost=0.00..1686910.69 rows=60764869 width=8) (actual time=0.046..65036.190 rows=60045297 loops=1)
                           Buffers: shared hit=294658 read=784604
                     ->  Hash  (cost=2993839.55..2993839.55 rows=7597456 width=39) (actual time=157928.377..157928.377 rows=86 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 7kB
                           Buffers: shared hit=754735 read=616365 dirtied=1 written=1
                           ->  Hash Join  (cost=2202626.74..2993839.55 rows=7597456 width=39) (actual time=140867.358..157927.774 rows=86 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=754735 read=616365 dirtied=1 written=1
                                 ->  Hash Join  (cost=2133598.74..2772862.43 rows=7597456 width=20) (actual time=135864.909..152923.684 rows=86 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=754732 read=581090 dirtied=1 written=1
                                       ->  Seq Scan on orders  (cost=0.00..408509.11 rows=15194911 width=16) (actual time=0.017..10719.113 rows=15015000 loops=1)
                                             Buffers: shared hit=238778 read=17782
                                       ->  Hash  (cost=2082575.99..2082575.99 rows=4081820 width=4) (actual time=135464.816..135464.816 rows=86 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 4kB
                                             Buffers: shared hit=515954 read=563308 dirtied=1 written=1
                                             ->  HashAggregate  (cost=1990735.04..2041757.79 rows=4081820 width=8) (actual time=126850.537..135463.637 rows=86 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 314::double precision)
                                                   Rows Removed by Filter: 15014914
                                                   Buffers: shared hit=515954 read=563308 dirtied=1 written=1
                                                   ->  Seq Scan on lineitem  (cost=0.00..1686910.69 rows=60764869 width=8) (actual time=0.030..70121.994 rows=60045297 loops=1)
                                                         Buffers: shared hit=515954 read=563308 dirtied=1 written=1
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=5000.810..5000.810 rows=1500000 loops=1)
                                       Buckets: 262144  Batches: 1  Memory Usage: 82032kB
                                       Buffers: shared hit=3 read=35275
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.009..4096.831 rows=1500000 loops=1)
                                             Buffers: shared hit=3 read=35275
 Total runtime: 239285.886 ms
(39 rows)

COMMIT;
COMMIT