BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	s_name,
	count(*) as numwait
from
	supplier,
	lineitem l1,
	orders,
	nation
where
	s_suppkey = l1.l_suppkey
	and o_orderkey = l1.l_orderkey
	and o_orderstatus = 'F'
	and l1.l_receiptdate > l1.l_commitdate
	and exists (
		select
			*
		from
			lineitem l2
		where
			l2.l_orderkey = l1.l_orderkey
			and l2.l_suppkey <> l1.l_suppkey
	)
	and not exists (
		select
			*
		from
			lineitem l3
		where
			l3.l_orderkey = l1.l_orderkey
			and l3.l_suppkey <> l1.l_suppkey
			and l3.l_receiptdate > l3.l_commitdate
	)
	and s_nationkey = n_nationkey
	and n_name = 'PERU'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=4866363.84..4866363.84 rows=1 width=26) (actual time=137194.303..137194.322 rows=100 loops=1)
   Buffers: shared hit=9590363 read=1968486 dirtied=1427 written=4687, temp read=161690 written=161684
   ->  Sort  (cost=4866363.84..4866363.84 rows=1 width=26) (actual time=137194.300..137194.306 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=9590363 read=1968486 dirtied=1427 written=4687, temp read=161690 written=161684
         ->  HashAggregate  (cost=4866363.82..4866363.83 rows=1 width=26) (actual time=137189.734..137191.461 rows=3991 loops=1)
               Buffers: shared hit=9590355 read=1968486 dirtied=1427 written=4687, temp read=161690 written=161684
               ->  Nested Loop Anti Join  (cost=2688908.86..4866363.81 rows=1 width=26) (actual time=45470.010..137050.820 rows=39351 loops=1)
                     Buffers: shared hit=9590355 read=1968486 dirtied=1427 written=4687, temp read=161690 written=161684
                     ->  Nested Loop  (cost=2688908.86..4866348.60 rows=1 width=34) (actual time=45466.289..122267.592 rows=705030 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=6584774 read=1432858 dirtied=1245 written=2038, temp read=161690 written=161684
                           ->  Hash Semi Join  (cost=2688908.86..4866346.60 rows=1 width=38) (actual time=45465.841..107424.700 rows=1461808 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 377661
                                 Buffers: shared hit=793955 read=1368543 dirtied=1201 written=137, temp read=161690 written=161684
                                 ->  Hash Join  (cost=2441.58..1927197.49 rows=809941 width=34) (actual time=34.730..49917.030 rows=1515809 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=402308 read=679871 written=137
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1840625.83 rows=20274849 width=8) (actual time=0.043..32660.950 rows=37966096 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22078937
                                             Buffers: shared hit=400462 read=679857 written=137
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=34.589..34.589 rows=3991 loops=1)
                                             Buckets: 1024  Batches: 1  Memory Usage: 250kB
                                             Buffers: shared hit=1843 read=14
                                             ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=30) (actual time=2.139..31.988 rows=3991 loops=1)
                                                   Buffers: shared hit=1843 read=14
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.014..0.020 rows=1 loops=1)
                                                         Filter: (n_name = 'PERU'::bpchar)
                                                         Rows Removed by Filter: 24
                                                         Buffers: shared hit=1
                                                   ->  Bitmap Heap Scan on supplier  (cost=79.26..2350.26 rows=4000 width=34) (actual time=2.118..30.244 rows=3991 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Buffers: shared hit=1842 read=14
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=1.693..1.693 rows=3991 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared read=14
                                 ->  Hash  (cost=1688564.46..1688564.46 rows=60824546 width=8) (actual time=45374.756..45374.756 rows=60045033 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 586575kB
                                       Buffers: shared hit=391647 read=688672 dirtied=1201, temp written=153905
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1688564.46 rows=60824546 width=8) (actual time=0.060..23721.335 rows=60045033 loops=1)
                                             Buffers: shared hit=391647 read=688672 dirtied=1201
                           ->  Index Scan using orders_o_orderkey_o_orderdate_idx on orders  (cost=0.00..1.98 rows=1 width=4) (actual time=0.009..0.009 rows=0 loops=1461808)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5790819 read=64315 dirtied=44 written=1901
                     ->  Index Scan using lineitem_l_orderkey_idx on lineitem l3  (cost=0.00..7.58 rows=5 width=8) (actual time=0.020..0.020 rows=1 loops=705030)
                           Index Cond: (l_orderkey = l1.l_orderkey)
                           Filter: ((l_receiptdate > l_commitdate) AND (l_suppkey <> l1.l_suppkey))
                           Rows Removed by Filter: 1
                           Buffers: shared hit=3005581 read=535628 dirtied=182 written=2649
 Total runtime: 137195.735 ms
(56 rows)

COMMIT;
COMMIT