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=10414434.91..10414437.66 rows=100 width=39) (actual time=129734.295..129734.851 rows=100 loops=1)
   Buffers: shared hit=1170494 read=1272691 dirtied=10
   ->  GroupAggregate  (cost=10414434.91..11247469.23 rows=30292157 width=39) (actual time=129734.292..129734.829 rows=100 loops=1)
         Buffers: shared hit=1170494 read=1272691 dirtied=10
         ->  Sort  (cost=10414434.91..10490165.30 rows=30292157 width=39) (actual time=129734.261..129734.360 rows=700 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=1170494 read=1272691 dirtied=10
               ->  Hash Join  (cost=3079847.04..5821961.69 rows=30292157 width=39) (actual time=92009.056..129729.211 rows=700 loops=1)
                     Hash Cond: (public.lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1170480 read=1272691 dirtied=10
                     ->  Seq Scan on lineitem  (cost=0.00..1681889.14 rows=60584314 width=8) (actual time=0.028..22501.025 rows=60044176 loops=1)
                           Buffers: shared hit=358197 read=717849
                     ->  Hash  (cost=2985159.79..2985159.79 rows=7574980 width=39) (actual time=91773.023..91773.023 rows=100 loops=1)
                           Buckets: 1048576  Batches: 1  Memory Usage: 8kB
                           Buffers: shared hit=812283 read=554842 dirtied=10
                           ->  Hash Join  (cost=2196285.91..2985159.79 rows=7574980 width=39) (actual time=80712.972..91772.470 rows=100 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=812283 read=554842 dirtied=10
                                 ->  Hash Join  (cost=2127257.91..2764632.19 rows=7574980 width=20) (actual time=79095.844..90151.789 rows=100 loops=1)
                                       Hash Cond: (orders.o_orderkey = public.lineitem.l_orderkey)
                                       Buffers: shared hit=777005 read=554842 dirtied=10
                                       ->  Seq Scan on orders  (cost=0.00..407300.59 rows=15149959 width=16) (actual time=0.014..6022.764 rows=15015000 loops=1)
                                             Buffers: shared hit=191182 read=64619
                                       ->  Hash  (cost=2076383.91..2076383.91 rows=4069920 width=4) (actual time=78953.061..78953.061 rows=100 loops=1)
                                             Buckets: 524288  Batches: 1  Memory Usage: 4kB
                                             Buffers: shared hit=585823 read=490223 dirtied=10
                                             ->  HashAggregate  (cost=1984810.71..2035684.71 rows=4069920 width=8) (actual time=70493.786..78952.354 rows=100 loops=1)
                                                   Filter: (sum(public.lineitem.l_quantity) > 313::double precision)
                                                   Rows Removed by Filter: 15014900
                                                   Buffers: shared hit=585823 read=490223 dirtied=10
                                                   ->  Seq Scan on lineitem  (cost=0.00..1681889.14 rows=60584314 width=8) (actual time=0.045..22643.108 rows=60044176 loops=1)
                                                         Buffers: shared hit=585823 read=490223 dirtied=10
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1615.412..1615.412 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=0.012..848.053 rows=1500000 loops=1)
                                             Buffers: shared hit=35278
 Total runtime: 129989.475 ms
(39 rows)

COMMIT;
COMMIT